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occt/src/V3d/V3d_View.cxx
kgv 87432b8278 0028726: Quantity_NameOfColor should be replaced by Quantity_Color in function input argument 
AIS_InteractiveObject, virtual methods ::SetColor(), ::Color()
returning/accepting Quantity_NameOfColor have been removed.
Virtual method ::SetMaterial() accepting Graphic3d_NameOfMaterial has been also removed.

V3d_View, V3d_Viewer, V3d_AmbientLight, V3d_DirectionalLight,
V3d_Light, V3d_PositionalLight, V3d_SpotLight, Aspect_Window,
methods accepting Quantity_NameOfColor have been removed (duplicates)
or color argument(s) replaced with Quantity_Color.
2017-05-26 14:49:03 +03:00

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// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#include <V3d_View.hxx>
#include <Aspect_GradientBackground.hxx>
#include <Aspect_Grid.hxx>
#include <Aspect_Window.hxx>
#include <Bnd_Box.hxx>
#include <gp_Ax3.hxx>
#include <gp_Dir.hxx>
#include <gp_Pln.hxx>
#include <Graphic3d_AspectMarker3d.hxx>
#include <Graphic3d_GraphicDriver.hxx>
#include <Graphic3d_Group.hxx>
#include <Graphic3d_MapIteratorOfMapOfStructure.hxx>
#include <Graphic3d_MapOfStructure.hxx>
#include <Graphic3d_Structure.hxx>
#include <Graphic3d_TextureEnv.hxx>
#include <Graphic3d_Vector.hxx>
#include <Image_AlienPixMap.hxx>
#include <Message.hxx>
#include <Message_Messenger.hxx>
#include <NCollection_Array1.hxx>
#include <Precision.hxx>
#include <Quantity_Color.hxx>
#include <Standard_Assert.hxx>
#include <Standard_DivideByZero.hxx>
#include <Standard_ErrorHandler.hxx>
#include <Standard_MultiplyDefined.hxx>
#include <Standard_ShortReal.hxx>
#include <Standard_Type.hxx>
#include <Standard_TypeMismatch.hxx>
#include <TColgp_Array1OfPnt.hxx>
#include <TColStd_Array2OfReal.hxx>
#include <TColStd_HSequenceOfInteger.hxx>
#include <V3d.hxx>
#include <V3d_BadValue.hxx>
#include <V3d_Light.hxx>
#include <V3d_StereoDumpOptions.hxx>
#include <V3d_UnMapped.hxx>
#include <V3d_Viewer.hxx>
IMPLEMENT_STANDARD_RTTIEXT(V3d_View,MMgt_TShared)
#define DEUXPI (2. * M_PI)
namespace
{
static const Standard_Integer THE_NB_BOUND_POINTS = 8;
}
//=============================================================================
//function : Constructor
//purpose :
//=============================================================================
V3d_View::V3d_View (const Handle(V3d_Viewer)& theViewer, const V3d_TypeOfView theType)
: MyViewer (theViewer.operator->()),
SwitchSetFront (Standard_False),
myZRotation (Standard_False),
myTrihedron (new V3d_Trihedron()),
MyTrsf (1, 4, 1, 4)
{
myView = theViewer->Driver()->CreateView (theViewer->StructureManager());
myView->SetBackground (theViewer->GetBackgroundColor());
myView->SetGradientBackground (theViewer->GetGradientBackground());
ChangeRenderingParams() = theViewer->DefaultRenderingParams();
// camera init
Handle(Graphic3d_Camera) aCamera = new Graphic3d_Camera();
aCamera->SetFOVy (45.0);
aCamera->SetIOD (Graphic3d_Camera::IODType_Relative, 0.05);
aCamera->SetZFocus (Graphic3d_Camera::FocusType_Relative, 1.0);
aCamera->SetProjectionType ((theType == V3d_ORTHOGRAPHIC)
? Graphic3d_Camera::Projection_Orthographic
: Graphic3d_Camera::Projection_Perspective);
myDefaultCamera = new Graphic3d_Camera();
myImmediateUpdate = Standard_False;
SetAutoZFitMode (Standard_True, 1.0);
SetBackFacingModel (V3d_TOBM_AUTOMATIC);
SetCamera (aCamera);
SetAxis (0.,0.,0.,1.,1.,1.);
SetVisualization (theViewer->DefaultVisualization());
SetShadingModel (theViewer->DefaultShadingModel());
SetTwist (0.);
SetAt (0.,0.,0.);
SetProj (theViewer->DefaultViewProj());
SetSize (theViewer->DefaultViewSize());
Standard_Real zsize = theViewer->DefaultViewSize();
SetZSize (2.*zsize);
SetDepth (theViewer->DefaultViewSize() / 2.0);
SetViewMappingDefault();
SetViewOrientationDefault();
theViewer->AddView (this);
Init();
myImmediateUpdate = Standard_True;
}
//=============================================================================
//function : Constructor
//purpose :
//=============================================================================
V3d_View::V3d_View (const Handle(V3d_Viewer)& theViewer, const Handle(V3d_View)& theView)
: MyViewer (theViewer.operator->()),
SwitchSetFront(Standard_False),
myZRotation (Standard_False),
MyTrsf (1, 4, 1, 4)
{
myView = theViewer->Driver()->CreateView (theViewer->StructureManager());
myView->CopySettings (theView->View());
myDefaultCamera = new Graphic3d_Camera();
myImmediateUpdate = Standard_False;
SetAutoZFitMode (theView->AutoZFitMode(), theView->AutoZFitScaleFactor());
SetAxis (0.0, 0.0, 0.0, 1.0, 1.0, 1.0);
SetViewMappingDefault();
SetViewOrientationDefault();
theViewer->AddView (this);
Init();
myImmediateUpdate = Standard_True;
}
//=============================================================================
//function : Destructor
//purpose :
//=============================================================================
V3d_View::~V3d_View()
{
if (!myView->IsRemoved())
{
myView->Remove();
}
}
//=============================================================================
//function : SetMagnify
//purpose :
//=============================================================================
void V3d_View::SetMagnify (const Handle(Aspect_Window)& theWindow,
const Handle(V3d_View)& thePreviousView,
const Standard_Integer theX1,
const Standard_Integer theY1,
const Standard_Integer theX2,
const Standard_Integer theY2)
{
if (!myView->IsRemoved() && !myView->IsDefined())
{
Standard_Real aU1, aV1, aU2, aV2;
thePreviousView->Convert (theX1, theY1, aU1, aV1);
thePreviousView->Convert (theX2, theY2, aU2, aV2);
myView->SetWindow (theWindow);
FitAll (aU1, aV1, aU2, aV2);
MyViewer->SetViewOn (this);
MyWindow = theWindow;
SetRatio();
Redraw();
SetViewMappingDefault();
}
}
//=============================================================================
//function : SetWindow
//purpose :
//=============================================================================
void V3d_View::SetWindow (const Handle(Aspect_Window)& theWindow,
const Aspect_RenderingContext theContext)
{
if (myView->IsRemoved())
{
return;
}
// method V3d_View::SetWindow() should assign the field MyWindow before calling Redraw()
MyWindow = theWindow;
myView->SetWindow (theWindow, theContext);
MyViewer->SetViewOn (this);
SetRatio();
Redraw();
}
//=============================================================================
//function : Remove
//purpose :
//=============================================================================
void V3d_View::Remove() const
{
MyViewer->DelView (this);
myView->Remove();
Handle(Aspect_Window)& aWin = const_cast<Handle(Aspect_Window)&> (MyWindow);
aWin.Nullify();
}
//=============================================================================
//function : Update
//purpose :
//=============================================================================
void V3d_View::Update() const
{
if (!myView->IsDefined()
|| !myView->IsActive())
{
return;
}
myView->Update();
myView->Compute();
myView->Redraw();
}
//=============================================================================
//function : Redraw
//purpose :
//=============================================================================
void V3d_View::Redraw() const
{
if (!myView->IsDefined()
|| !myView->IsActive())
{
return;
}
Handle(Graphic3d_GraphicDriver) aGraphicDriver = MyViewer->Driver();
Handle(Graphic3d_StructureManager) aStructureMgr = MyViewer->StructureManager();
for (Standard_Integer aRetryIter = 0; aRetryIter < 2; ++aRetryIter)
{
if (aGraphicDriver->IsDeviceLost())
{
aStructureMgr->RecomputeStructures();
aGraphicDriver->ResetDeviceLostFlag();
}
AutoZFit();
myView->Redraw();
if (!aGraphicDriver->IsDeviceLost())
{
return;
}
}
}
//=============================================================================
//function : RedrawImmediate
//purpose :
//=============================================================================
void V3d_View::RedrawImmediate() const
{
if (!myView->IsDefined()
|| !myView->IsActive())
{
return;
}
myView->RedrawImmediate();
}
//=============================================================================
//function : Invalidate
//purpose :
//=============================================================================
void V3d_View::Invalidate() const
{
if (!myView->IsDefined())
{
return;
}
myView->Invalidate();
}
//=============================================================================
//function : IsInvalidated
//purpose :
//=============================================================================
Standard_Boolean V3d_View::IsInvalidated() const
{
return !myView->IsDefined()
|| myView->IsInvalidated();
}
// ========================================================================
// function : SetAutoZFitMode
// purpose :
// ========================================================================
void V3d_View::SetAutoZFitMode (const Standard_Boolean theIsOn,
const Standard_Real theScaleFactor)
{
Standard_ASSERT_RAISE (theScaleFactor > 0.0, "Zero or negative scale factor is not allowed.");
myAutoZFitScaleFactor = theScaleFactor;
myAutoZFitIsOn = theIsOn;
}
// ========================================================================
// function : AutoZFitMode
// purpose :
// ========================================================================
Standard_Boolean V3d_View::AutoZFitMode() const
{
return myAutoZFitIsOn;
}
// ========================================================================
// function : AutoZFitScaleFactor
// purpose :
// ========================================================================
Standard_Real V3d_View::AutoZFitScaleFactor() const
{
return myAutoZFitScaleFactor;
}
//=============================================================================
//function : AutoZFit
//purpose :
//=============================================================================
void V3d_View::AutoZFit() const
{
if (!AutoZFitMode())
{
return;
}
ZFitAll (myAutoZFitScaleFactor);
}
//=============================================================================
//function : ZFitAll
//purpose :
//=============================================================================
void V3d_View::ZFitAll (const Standard_Real theScaleFactor) const
{
Bnd_Box aMinMaxBox = myView->MinMaxValues (Standard_False); // applicative min max boundaries
Bnd_Box aGraphicBox = myView->MinMaxValues (Standard_True); // real graphical boundaries (not accounting infinite flag).
myView->Camera()->ZFitAll (theScaleFactor, aMinMaxBox, aGraphicBox);
}
//=============================================================================
//function : IsEmpty
//purpose :
//=============================================================================
Standard_Boolean V3d_View::IsEmpty() const
{
Standard_Boolean TheStatus = Standard_True ;
if( myView->IsDefined() ) {
Standard_Integer Nstruct = myView->NumberOfDisplayedStructures() ;
if( Nstruct > 0 ) TheStatus = Standard_False ;
}
return (TheStatus) ;
}
//=============================================================================
//function : UpdateLights
//purpose :
//=============================================================================
void V3d_View::UpdateLights() const
{
Graphic3d_ListOfCLight aLights;
for (V3d_ListOfLight::Iterator anActiveLightIter (myActiveLights); anActiveLightIter.More(); anActiveLightIter.Next())
{
aLights.Append (anActiveLightIter.Value()->Light());
}
myView->SetLights (aLights);
Update();
}
//=============================================================================
//function : DoMapping
//purpose :
//=============================================================================
void V3d_View::DoMapping()
{
if (!myView->IsDefined())
{
return;
}
myView->Window()->DoMapping();
}
//=============================================================================
//function : MustBeResized
//purpose :
//=============================================================================
void V3d_View::MustBeResized()
{
if (!myView->IsDefined())
{
return;
}
myView->Resized();
SetRatio();
Redraw();
}
//=============================================================================
//function : SetBackgroundColor
//purpose :
//=============================================================================
void V3d_View::SetBackgroundColor (const Quantity_TypeOfColor theType,
const Standard_Real theV1,
const Standard_Real theV2,
const Standard_Real theV3)
{
Standard_Real aV1 = Max (Min (theV1, 1.0), 0.0);
Standard_Real aV2 = Max (Min (theV2, 1.0), 0.0);
Standard_Real aV3 = Max (Min (theV3, 1.0), 0.0);
SetBackgroundColor (Quantity_Color (aV1, aV2, aV3, theType));
}
//=============================================================================
//function : SetBackgroundColor
//purpose :
//=============================================================================
void V3d_View::SetBackgroundColor (const Quantity_Color& theColor)
{
myView->SetBackground (Aspect_Background (theColor));
if (myImmediateUpdate)
{
Redraw();
}
}
//=============================================================================
//function : SetBgGradientColors
//purpose :
//=============================================================================
void V3d_View::SetBgGradientColors (const Quantity_Color& theColor1,
const Quantity_Color& theColor2,
const Aspect_GradientFillMethod theFillStyle,
const Standard_Boolean theToUpdate)
{
Aspect_GradientBackground aGradientBg (theColor1, theColor2, theFillStyle);
myView->SetGradientBackground (aGradientBg);
if (myImmediateUpdate || theToUpdate)
{
Redraw();
}
}
//=============================================================================
//function : SetBgGradientStyle
//purpose :
//=============================================================================
void V3d_View::SetBgGradientStyle (const Aspect_GradientFillMethod theFillStyle, const Standard_Boolean theToUpdate)
{
Quantity_Color aColor1;
Quantity_Color aColor2;
GradientBackground().Colors (aColor1, aColor2);
SetBgGradientColors (aColor1, aColor2, theFillStyle, theToUpdate);
}
//=============================================================================
//function : SetBackgroundImage
//purpose :
//=============================================================================
void V3d_View::SetBackgroundImage (const Standard_CString theFileName,
const Aspect_FillMethod theFillStyle,
const Standard_Boolean theToUpdate)
{
myView->SetBackgroundImage (theFileName);
myView->SetBackgroundImageStyle (theFillStyle);
if (myImmediateUpdate || theToUpdate)
{
Redraw();
}
}
//=============================================================================
//function : SetBgImageStyle
//purpose :
//=============================================================================
void V3d_View::SetBgImageStyle (const Aspect_FillMethod theFillStyle, const Standard_Boolean theToUpdate)
{
myView->SetBackgroundImageStyle (theFillStyle);
if (myImmediateUpdate || theToUpdate)
{
Redraw();
}
}
//=============================================================================
//function : SetAxis
//purpose :
//=============================================================================
void V3d_View::SetAxis(const Standard_Real X, const Standard_Real Y, const Standard_Real Z, const Standard_Real Vx, const Standard_Real Vy, const Standard_Real Vz)
{
Standard_Real D,Nx = Vx,Ny = Vy,Nz = Vz ;
D = Sqrt( Vx*Vx + Vy*Vy + Vz*Vz ) ;
V3d_BadValue_Raise_if ( D <= 0. , "V3d_View::SetAxis, bad axis");
Nx /= D ; Ny /= D ; Nz /= D ;
MyDefaultViewPoint.SetCoord(X,Y,Z) ;
MyDefaultViewAxis.SetCoord(Nx,Ny,Nz) ;
}
//=============================================================================
//function : SetShadingModel
//purpose :
//=============================================================================
void V3d_View::SetShadingModel (const V3d_TypeOfShadingModel theShadingModel)
{
myView->SetShadingModel (static_cast<Graphic3d_TypeOfShadingModel> (theShadingModel));
}
//=============================================================================
//function : SetTextureEnv
//purpose :
//=============================================================================
void V3d_View::SetTextureEnv (const Handle(Graphic3d_TextureEnv)& theTexture)
{
myView->SetTextureEnv (theTexture);
if (myImmediateUpdate)
{
Redraw();
}
}
//=============================================================================
//function : SetVisualization
//purpose :
//=============================================================================
void V3d_View::SetVisualization (const V3d_TypeOfVisualization theType)
{
myView->SetVisualizationType (static_cast <Graphic3d_TypeOfVisualization> (theType));
if (myImmediateUpdate)
{
Redraw();
}
}
//=============================================================================
//function : SetFront
//purpose :
//=============================================================================
void V3d_View::SetFront()
{
gp_Ax3 a = MyViewer->PrivilegedPlane();
Standard_Real xo, yo, zo, vx, vy, vz, xu, yu, zu;
a.Direction().Coord(vx,vy,vz);
a.YDirection().Coord(xu,yu,zu);
a.Location().Coord(xo,yo,zo);
Handle(Graphic3d_Camera) aCamera = Camera();
aCamera->SetCenter (gp_Pnt (xo, yo, zo));
if(SwitchSetFront)
{
aCamera->SetDirection (gp_Dir (vx, vy, vz));
}
else
{
aCamera->SetDirection (gp_Dir (vx, vy, vz).Reversed());
}
aCamera->SetUp (gp_Dir (xu, yu, zu));
AutoZFit();
SwitchSetFront = !SwitchSetFront;
ImmediateUpdate();
}
//=============================================================================
//function : Rotate
//purpose :
//=============================================================================
void V3d_View::Rotate (const Standard_Real ax,
const Standard_Real ay,
const Standard_Real az,
const Standard_Boolean Start)
{
Standard_Real Ax = ax;
Standard_Real Ay = ay;
Standard_Real Az = az;
if( Ax > 0. ) while ( Ax > DEUXPI ) Ax -= DEUXPI;
else if( Ax < 0. ) while ( Ax < -DEUXPI ) Ax += DEUXPI;
if( Ay > 0. ) while ( Ay > DEUXPI ) Ay -= DEUXPI;
else if( Ay < 0. ) while ( Ay < -DEUXPI ) Ay += DEUXPI;
if( Az > 0. ) while ( Az > DEUXPI ) Az -= DEUXPI;
else if( Az < 0. ) while ( Az < -DEUXPI ) Az += DEUXPI;
Handle(Graphic3d_Camera) aCamera = Camera();
if (Start)
{
myCamStartOpUp = aCamera->Up();
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
}
aCamera->SetUp (myCamStartOpUp);
aCamera->SetEye (myCamStartOpEye);
aCamera->SetCenter (myCamStartOpCenter);
// rotate camera around 3 initial axes
gp_Dir aBackDir (gp_Vec (myCamStartOpCenter, myCamStartOpEye));
gp_Dir aXAxis (myCamStartOpUp.Crossed (aBackDir));
gp_Dir aYAxis (aBackDir.Crossed (aXAxis));
gp_Dir aZAxis (aXAxis.Crossed (aYAxis));
gp_Trsf aRot[3], aTrsf;
aRot[0].SetRotation (gp_Ax1 (myCamStartOpCenter, aYAxis), -Ax);
aRot[1].SetRotation (gp_Ax1 (myCamStartOpCenter, aXAxis), Ay);
aRot[2].SetRotation (gp_Ax1 (myCamStartOpCenter, aZAxis), Az);
aTrsf.Multiply (aRot[0]);
aTrsf.Multiply (aRot[1]);
aTrsf.Multiply (aRot[2]);
aCamera->Transform (aTrsf);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : Rotate
//purpose :
//=============================================================================
void V3d_View::Rotate(const Standard_Real ax, const Standard_Real ay, const Standard_Real az,
const Standard_Real X, const Standard_Real Y, const Standard_Real Z, const Standard_Boolean Start)
{
Standard_Real Ax = ax ;
Standard_Real Ay = ay ;
Standard_Real Az = az ;
if( Ax > 0. ) while ( Ax > DEUXPI ) Ax -= DEUXPI ;
else if( Ax < 0. ) while ( Ax < -DEUXPI ) Ax += DEUXPI ;
if( Ay > 0. ) while ( Ay > DEUXPI ) Ay -= DEUXPI ;
else if( Ay < 0. ) while ( Ay < -DEUXPI ) Ay += DEUXPI ;
if( Az > 0. ) while ( Az > DEUXPI ) Az -= DEUXPI ;
else if( Az < 0. ) while ( Az < -DEUXPI ) Az += DEUXPI ;
Handle(Graphic3d_Camera) aCamera = Camera();
if (Start)
{
myGravityReferencePoint.SetCoord (X, Y, Z);
myCamStartOpUp = aCamera->Up();
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
}
const Graphic3d_Vertex& aVref = myGravityReferencePoint;
aCamera->SetUp (myCamStartOpUp);
aCamera->SetEye (myCamStartOpEye);
aCamera->SetCenter (myCamStartOpCenter);
// rotate camera around 3 initial axes
gp_Pnt aRCenter (aVref.X(), aVref.Y(), aVref.Z());
gp_Dir aZAxis (aCamera->Direction().Reversed());
gp_Dir aYAxis (aCamera->Up());
gp_Dir aXAxis (aYAxis.Crossed (aZAxis));
gp_Trsf aRot[3], aTrsf;
aRot[0].SetRotation (gp_Ax1 (aRCenter, aYAxis), -Ax);
aRot[1].SetRotation (gp_Ax1 (aRCenter, aXAxis), Ay);
aRot[2].SetRotation (gp_Ax1 (aRCenter, aZAxis), Az);
aTrsf.Multiply (aRot[0]);
aTrsf.Multiply (aRot[1]);
aTrsf.Multiply (aRot[2]);
aCamera->Transform (aTrsf);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : Rotate
//purpose :
//=============================================================================
void V3d_View::Rotate(const V3d_TypeOfAxe Axe, const Standard_Real angle, const Standard_Boolean Start)
{
switch (Axe) {
case V3d_X :
Rotate(angle,0.,0.,Start);
break ;
case V3d_Y :
Rotate(0.,angle,0.,Start);
break ;
case V3d_Z :
Rotate(0.,0.,angle,Start);
break ;
}
}
//=============================================================================
//function : Rotate
//purpose :
//=============================================================================
void V3d_View::Rotate(const V3d_TypeOfAxe Axe, const Standard_Real angle,
const Standard_Real X, const Standard_Real Y, const Standard_Real Z, const Standard_Boolean Start)
{
Standard_Real Angle = angle ;
if( Angle > 0. ) while ( Angle > DEUXPI ) Angle -= DEUXPI ;
else if( Angle < 0. ) while ( Angle < -DEUXPI ) Angle += DEUXPI ;
Handle(Graphic3d_Camera) aCamera = Camera();
if (Start)
{
myGravityReferencePoint.SetCoord (X, Y, Z);
myCamStartOpUp = aCamera->Up();
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
switch (Axe) {
case V3d_X :
myViewAxis.SetCoord(1.,0.,0.) ;
break ;
case V3d_Y :
myViewAxis.SetCoord(0.,1.,0.) ;
break ;
case V3d_Z :
myViewAxis.SetCoord(0.,0.,1.) ;
break ;
}
myCamStartOpUp = aCamera->Up();
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
}
const Graphic3d_Vertex& aVref = myGravityReferencePoint;
aCamera->SetUp (myCamStartOpUp);
aCamera->SetEye (myCamStartOpEye);
aCamera->SetCenter (myCamStartOpCenter);
// rotate camera around passed axis
gp_Trsf aRotation;
gp_Pnt aRCenter (aVref.X(), aVref.Y(), aVref.Z());
gp_Dir aRAxis ((Axe == V3d_X) ? 1.0 : 0.0,
(Axe == V3d_Y) ? 1.0 : 0.0,
(Axe == V3d_Z) ? 1.0 : 0.0);
aRotation.SetRotation (gp_Ax1 (aRCenter, aRAxis), Angle);
aCamera->Transform (aRotation);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : Rotate
//purpose :
//=============================================================================
void V3d_View::Rotate(const Standard_Real angle, const Standard_Boolean Start)
{
Standard_Real Angle = angle;
if( Angle > 0. ) while ( Angle > DEUXPI ) Angle -= DEUXPI ;
else if( Angle < 0. ) while ( Angle < -DEUXPI ) Angle += DEUXPI ;
Handle(Graphic3d_Camera) aCamera = Camera();
if( Start ) {
myCamStartOpUp = aCamera->Up();
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
}
const Graphic3d_Vertex& aPnt = MyDefaultViewPoint;
const Graphic3d_Vector& anAxis = MyDefaultViewAxis;
aCamera->SetUp (myCamStartOpUp);
aCamera->SetEye (myCamStartOpEye);
aCamera->SetCenter (myCamStartOpCenter);
gp_Trsf aRotation;
gp_Pnt aRCenter (aPnt.X(), aPnt.Y(), aPnt.Z());
gp_Dir aRAxis (anAxis.X(), anAxis.Y(), anAxis.Z());
aRotation.SetRotation (gp_Ax1 (aRCenter, aRAxis), Angle);
aCamera->Transform (aRotation);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : Turn
//purpose :
//=============================================================================
void V3d_View::Turn(const Standard_Real ax, const Standard_Real ay, const Standard_Real az, const Standard_Boolean Start)
{
Standard_Real Ax = ax;
Standard_Real Ay = ay;
Standard_Real Az = az;
if( Ax > 0. ) while ( Ax > DEUXPI ) Ax -= DEUXPI ;
else if( Ax < 0. ) while ( Ax < -DEUXPI ) Ax += DEUXPI ;
if( Ay > 0. ) while ( Ay > DEUXPI ) Ay -= DEUXPI ;
else if( Ay < 0. ) while ( Ay < -DEUXPI ) Ay += DEUXPI ;
if( Az > 0. ) while ( Az > DEUXPI ) Az -= DEUXPI ;
else if( Az < 0. ) while ( Az < -DEUXPI ) Az += DEUXPI ;
Handle(Graphic3d_Camera) aCamera = Camera();
if( Start ) {
myCamStartOpUp = aCamera->Up();
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
}
aCamera->SetUp (myCamStartOpUp);
aCamera->SetEye (myCamStartOpEye);
aCamera->SetCenter (myCamStartOpCenter);
// rotate camera around 3 initial axes
gp_Pnt aRCenter = aCamera->Eye();
gp_Dir aZAxis (aCamera->Direction().Reversed());
gp_Dir aYAxis (aCamera->Up());
gp_Dir aXAxis (aYAxis.Crossed (aZAxis));
gp_Trsf aRot[3], aTrsf;
aRot[0].SetRotation (gp_Ax1 (aRCenter, aYAxis), -Ax);
aRot[1].SetRotation (gp_Ax1 (aRCenter, aXAxis), Ay);
aRot[2].SetRotation (gp_Ax1 (aRCenter, aZAxis), Az);
aTrsf.Multiply (aRot[0]);
aTrsf.Multiply (aRot[1]);
aTrsf.Multiply (aRot[2]);
aCamera->Transform (aTrsf);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : Turn
//purpose :
//=============================================================================
void V3d_View::Turn(const V3d_TypeOfAxe Axe, const Standard_Real angle, const Standard_Boolean Start)
{
switch (Axe) {
case V3d_X :
Turn(angle,0.,0.,Start);
break ;
case V3d_Y :
Turn(0.,angle,0.,Start);
break ;
case V3d_Z :
Turn(0.,0.,angle,Start);
break ;
}
}
//=============================================================================
//function : Turn
//purpose :
//=============================================================================
void V3d_View::Turn(const Standard_Real angle, const Standard_Boolean Start)
{
Standard_Real Angle = angle ;
if( Angle > 0. ) while ( Angle > DEUXPI ) Angle -= DEUXPI ;
else if( Angle < 0. ) while ( Angle < -DEUXPI ) Angle += DEUXPI ;
Handle(Graphic3d_Camera) aCamera = Camera();
if( Start ) {
myCamStartOpUp = aCamera->Up();
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
}
aCamera->SetUp (myCamStartOpUp);
aCamera->SetEye (myCamStartOpEye);
aCamera->SetCenter (myCamStartOpCenter);
const Graphic3d_Vector& anAxis = MyDefaultViewAxis;
gp_Trsf aRotation;
gp_Pnt aRCenter = aCamera->Eye();
gp_Dir aRAxis (anAxis.X(), anAxis.Y(), anAxis.Z());
aRotation.SetRotation (gp_Ax1 (aRCenter, aRAxis), Angle);
aCamera->Transform (aRotation);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetTwist
//purpose :
//=============================================================================
void V3d_View::SetTwist(const Standard_Real angle)
{
Standard_Real Angle = angle ;
Standard_Boolean TheStatus;
if( Angle > 0. ) while ( Angle > DEUXPI ) Angle -= DEUXPI ;
else if( Angle < 0. ) while ( Angle < -DEUXPI ) Angle += DEUXPI ;
Handle(Graphic3d_Camera) aCamera = Camera();
gp_Dir aReferencePlane (aCamera->Direction().Reversed());
gp_Dir anUp;
anUp = gp_Dir (0.0, 0.0, 1.0);
TheStatus = ScreenAxis(aReferencePlane, anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
if( !TheStatus ) {
anUp = gp_Dir (0.0, 1.0, 0.0);
TheStatus = ScreenAxis(aReferencePlane, anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
}
if( !TheStatus ) {
anUp = gp_Dir (1.0, 0.0, 0.0);
TheStatus = ScreenAxis(aReferencePlane, anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
}
V3d_BadValue_Raise_if( !TheStatus,"V3d_ViewSetTwist, alignment of Eye,At,Up,");
gp_Pnt aRCenter = aCamera->Center();
gp_Dir aZAxis (aCamera->Direction().Reversed());
gp_Trsf aTrsf;
aTrsf.SetRotation (gp_Ax1 (aRCenter, aZAxis), Angle);
Standard_Real myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ;
myYscreenAxis.Coord (myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ);
aCamera->SetUp (gp_Dir (myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ));
aCamera->Transform (aTrsf);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetEye
//purpose :
//=============================================================================
void V3d_View::SetEye(const Standard_Real X,const Standard_Real Y,const Standard_Real Z)
{
Standard_Real aTwistBefore = Twist();
Standard_Boolean wasUpdateEnabled = SetImmediateUpdate (Standard_False);
Handle(Graphic3d_Camera) aCamera = Camera();
aCamera->SetEye (gp_Pnt (X, Y, Z));
SetTwist (aTwistBefore);
AutoZFit();
SetImmediateUpdate (wasUpdateEnabled);
ImmediateUpdate();
}
//=============================================================================
//function : SetDepth
//purpose :
//=============================================================================
void V3d_View::SetDepth(const Standard_Real Depth)
{
V3d_BadValue_Raise_if (Depth == 0. ,"V3d_View::SetDepth, bad depth");
Handle(Graphic3d_Camera) aCamera = Camera();
if( Depth > 0. )
{
// Move eye using center (target) as anchor.
aCamera->SetDistance (Depth);
}
else
{
// Move the view ref point instead of the eye.
gp_Vec aDir (aCamera->Direction());
gp_Pnt aCameraEye = aCamera->Eye();
gp_Pnt aCameraCenter = aCameraEye.Translated (aDir.Multiplied (Abs (Depth)));
aCamera->SetCenter (aCameraCenter);
}
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetProj
//purpose :
//=============================================================================
void V3d_View::SetProj( const Standard_Real Vx,const Standard_Real Vy, const Standard_Real Vz )
{
V3d_BadValue_Raise_if( Sqrt(Vx*Vx + Vy*Vy + Vz*Vz) <= 0.,
"V3d_View::SetProj, null projection vector");
Standard_Real aTwistBefore = Twist();
Standard_Boolean wasUpdateEnabled = SetImmediateUpdate (Standard_False);
Camera()->SetDirection (gp_Dir (Vx, Vy, Vz).Reversed());
SetTwist(aTwistBefore);
AutoZFit();
SetImmediateUpdate (wasUpdateEnabled);
ImmediateUpdate();
}
//=============================================================================
//function : SetProj
//purpose :
//=============================================================================
void V3d_View::SetProj( const V3d_TypeOfOrientation Orientation )
{
Standard_Real Xpn=0;
Standard_Real Ypn=0;
Standard_Real Zpn=0;
switch (Orientation) {
case V3d_Zpos :
Ypn = 1.;
break;
case V3d_Zneg :
Ypn = -1.;
break;
default:
Zpn = 1.;
}
const Graphic3d_Vector& aBck = V3d::GetProjAxis (Orientation);
// retain camera panning from origin when switching projection
Handle(Graphic3d_Camera) aCamera = Camera();
gp_Pnt anOriginVCS = aCamera->ConvertWorld2View (gp::Origin());
Standard_Real aPanX = anOriginVCS.X();
Standard_Real aPanY = anOriginVCS.Y();
aCamera->SetCenter (gp_Pnt (0, 0, 0));
aCamera->SetDirection (gp_Dir (aBck.X(), aBck.Y(), aBck.Z()).Reversed());
aCamera->SetUp (gp_Dir (Xpn, Ypn, Zpn));
aCamera->OrthogonalizeUp();
Panning (aPanX, aPanY);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetAt
//purpose :
//=============================================================================
void V3d_View::SetAt(const Standard_Real X,const Standard_Real Y,const Standard_Real Z)
{
Standard_Real aTwistBefore = Twist();
Standard_Boolean wasUpdateEnabled = SetImmediateUpdate (Standard_False);
Camera()->SetCenter (gp_Pnt (X, Y, Z));
SetTwist (aTwistBefore);
AutoZFit();
SetImmediateUpdate (wasUpdateEnabled);
ImmediateUpdate();
}
//=============================================================================
//function : SetUp
//purpose :
//=============================================================================
void V3d_View::SetUp(const Standard_Real Vx,const Standard_Real Vy,const Standard_Real Vz)
{
Standard_Boolean TheStatus ;
V3d_BadValue_Raise_if( Sqrt(Vx*Vx + Vy*Vy + Vz*Vz) <= 0. ,
"V3d_View::SetUp, nullUp vector");
Handle(Graphic3d_Camera) aCamera = Camera();
gp_Dir aReferencePlane (aCamera->Direction().Reversed());
gp_Dir anUp (Vx, Vy, Vz);
TheStatus = ScreenAxis(aReferencePlane,anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
if( !TheStatus ) {
anUp = gp_Dir (0.0, 0.0, 1.0);
TheStatus = ScreenAxis(aReferencePlane,anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
}
if( !TheStatus ) {
anUp = gp_Dir (0.0, 1.0, 0.0);
TheStatus = ScreenAxis(aReferencePlane,anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
}
if( !TheStatus ) {
anUp = gp_Dir (1.0, 0.0, 0.0);
TheStatus = ScreenAxis(aReferencePlane,anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
}
V3d_BadValue_Raise_if( !TheStatus,"V3d_View::Setup, alignment of Eye,At,Up");
Standard_Real myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ;
myYscreenAxis.Coord (myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ);
aCamera->SetUp (gp_Dir (myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ));
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetUp
//purpose :
//=============================================================================
void V3d_View::SetUp( const V3d_TypeOfOrientation Orientation )
{
Standard_Boolean TheStatus ;
Handle(Graphic3d_Camera) aCamera = Camera();
gp_Dir aReferencePlane (aCamera->Direction().Reversed());
gp_Dir anUp;
const Graphic3d_Vector& aViewReferenceUp = V3d::GetProjAxis(Orientation) ;
anUp = gp_Dir (aViewReferenceUp.X(), aViewReferenceUp.Y(), aViewReferenceUp.Z());
TheStatus = ScreenAxis(aReferencePlane,anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
if( !TheStatus ) {
anUp = gp_Dir (0.,0.,1.);
TheStatus = ScreenAxis(aReferencePlane,anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
}
if( !TheStatus ) {
anUp = gp_Dir (0.,1.,0.);
TheStatus = ScreenAxis(aReferencePlane,anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
}
if( !TheStatus ) {
anUp = gp_Dir (1.,0.,0.);
TheStatus = ScreenAxis(aReferencePlane,anUp,
myXscreenAxis,myYscreenAxis,myZscreenAxis) ;
}
V3d_BadValue_Raise_if( !TheStatus, "V3d_View::SetUp, alignment of Eye,At,Up");
Standard_Real myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ;
myYscreenAxis.Coord (myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ);
aCamera->SetUp (gp_Dir (myYscreenAxisX, myYscreenAxisY, myYscreenAxisZ));
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetViewOrientationDefault
//purpose :
//=============================================================================
void V3d_View::SetViewOrientationDefault()
{
myDefaultCamera->CopyOrientationData (Camera());
}
//=======================================================================
//function : SetViewMappingDefault
//purpose :
//=======================================================================
void V3d_View::SetViewMappingDefault()
{
myDefaultCamera->CopyMappingData (Camera());
}
//=============================================================================
//function : ResetViewOrientation
//purpose :
//=============================================================================
void V3d_View::ResetViewOrientation()
{
Camera()->CopyOrientationData (myDefaultCamera);
AutoZFit();
ImmediateUpdate();
}
//=======================================================================
//function : ResetViewMapping
//purpose :
//=======================================================================
void V3d_View::ResetViewMapping()
{
Camera()->CopyMappingData (myDefaultCamera);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : Reset
//purpose :
//=============================================================================
void V3d_View::Reset (const Standard_Boolean theToUpdate)
{
Camera()->Copy (myDefaultCamera);
AutoZFit();
SwitchSetFront = Standard_False;
if (myImmediateUpdate || theToUpdate)
{
Update();
}
}
//=======================================================================
//function : SetCenter
//purpose :
//=======================================================================
void V3d_View::SetCenter (const Standard_Integer theXp,
const Standard_Integer theYp)
{
Standard_Real aXv, aYv;
Convert (theXp, theYp, aXv, aYv);
Translate (Camera(), aXv, aYv);
ImmediateUpdate();
}
//=============================================================================
//function : SetSize
//purpose :
//=============================================================================
void V3d_View::SetSize (const Standard_Real theSize)
{
V3d_BadValue_Raise_if (theSize <= 0.0, "V3d_View::SetSize, Window Size is NULL");
Handle(Graphic3d_Camera) aCamera = Camera();
aCamera->SetScale (aCamera->Aspect() >= 1.0 ? theSize / aCamera->Aspect() : theSize);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetZSize
//purpose :
//=============================================================================
void V3d_View::SetZSize (const Standard_Real theSize)
{
Handle(Graphic3d_Camera) aCamera = Camera();
Standard_Real Zmax = theSize / 2.;
Standard_Real aDistance = aCamera->Distance();
if (theSize <= 0.)
{
Zmax = aDistance;
}
// ShortReal precision factor used to add meaningful tolerance to
// ZNear, ZFar values in order to avoid equality after type conversion
// to ShortReal matrices type.
const Standard_Real aPrecision = 1.0 / Pow (10.0, ShortRealDigits() - 1);
Standard_Real aZFar = Zmax + aDistance * 2.0;
Standard_Real aZNear = -Zmax + aDistance;
aZNear -= Abs (aZNear) * aPrecision;
aZFar += Abs (aZFar) * aPrecision;
if (!aCamera->IsOrthographic())
{
if (aZFar < aPrecision)
{
// Invalid case when both values are negative
aZNear = aPrecision;
aZFar = aPrecision * 2.0;
}
else if (aZNear < Abs (aZFar) * aPrecision)
{
// Z is less than 0.0, try to fix it using any appropriate z-scale
aZNear = Abs (aZFar) * aPrecision;
}
}
// If range is too small
if (aZFar < (aZNear + Abs (aZFar) * aPrecision))
{
aZFar = aZNear + Abs (aZFar) * aPrecision;
}
aCamera->SetZRange (aZNear, aZFar);
if (myImmediateUpdate)
{
Redraw();
}
}
//=============================================================================
//function : SetZoom
//purpose :
//=============================================================================
void V3d_View::SetZoom (const Standard_Real theCoef,const Standard_Boolean theToStart)
{
V3d_BadValue_Raise_if (theCoef <= 0., "V3d_View::SetZoom, bad coefficient");
Handle(Graphic3d_Camera) aCamera = Camera();
if (theToStart)
{
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
}
Standard_Real aViewWidth = aCamera->ViewDimensions().X();
Standard_Real aViewHeight = aCamera->ViewDimensions().Y();
// ensure that zoom will not be too small or too big
Standard_Real aCoef = theCoef;
if (aViewWidth < aCoef * Precision::Confusion())
{
aCoef = aViewWidth / Precision::Confusion();
}
else if (aViewWidth > aCoef * 1e12)
{
aCoef = aViewWidth / 1e12;
}
if (aViewHeight < aCoef * Precision::Confusion())
{
aCoef = aViewHeight / Precision::Confusion();
}
else if (aViewHeight > aCoef * 1e12)
{
aCoef = aViewHeight / 1e12;
}
aCamera->SetEye (myCamStartOpEye);
aCamera->SetCenter (myCamStartOpCenter);
aCamera->SetScale (aCamera->Scale() / aCoef);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetScale
//purpose :
//=============================================================================
void V3d_View::SetScale( const Standard_Real Coef )
{
V3d_BadValue_Raise_if( Coef <= 0. ,"V3d_View::SetScale, bad coefficient");
Handle(Graphic3d_Camera) aCamera = Camera();
Standard_Real aDefaultScale = myDefaultCamera->Scale();
aCamera->SetAspect (myDefaultCamera->Aspect());
aCamera->SetScale (aDefaultScale / Coef);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : SetAxialScale
//purpose :
//=============================================================================
void V3d_View::SetAxialScale( const Standard_Real Sx, const Standard_Real Sy, const Standard_Real Sz )
{
V3d_BadValue_Raise_if( Sx <= 0. || Sy <= 0. || Sz <= 0.,"V3d_View::SetAxialScale, bad coefficient");
Camera()->SetAxialScale (gp_XYZ (Sx, Sy, Sz));
AutoZFit();
}
//=============================================================================
//function : SetRatio
//purpose :
//=============================================================================
void V3d_View::SetRatio()
{
if (MyWindow.IsNull())
{
return;
}
Standard_Integer aWidth = 0;
Standard_Integer aHeight = 0;
MyWindow->Size (aWidth, aHeight);
if (aWidth > 0 && aHeight > 0)
{
Standard_Real aRatio = static_cast<Standard_Real> (aWidth) /
static_cast<Standard_Real> (aHeight);
Camera() ->SetAspect (aRatio);
myDefaultCamera->SetAspect (aRatio);
}
}
//=============================================================================
//function : FitAll
//purpose :
//=============================================================================
void V3d_View::FitAll (const Quantity_Coefficient theMargin, const Standard_Boolean theToUpdate)
{
FitAll (myView->MinMaxValues(), theMargin, theToUpdate);
}
//=============================================================================
//function : FitAll
//purpose :
//=============================================================================
void V3d_View::FitAll (const Bnd_Box& theBox, const Quantity_Coefficient theMargin, const Standard_Boolean theToUpdate)
{
Standard_ASSERT_RAISE(theMargin >= 0.0 && theMargin < 1.0, "Invalid margin coefficient");
if (myView->NumberOfDisplayedStructures() == 0)
{
return;
}
if (!FitMinMax (Camera(), theBox, theMargin, 10.0 * Precision::Confusion()))
{
return;
}
AutoZFit();
if (myImmediateUpdate || theToUpdate)
{
Update();
}
}
//=============================================================================
//function : DepthFitAll
//purpose :
//=============================================================================
void V3d_View::DepthFitAll(const Quantity_Coefficient Aspect,
const Quantity_Coefficient Margin)
{
Standard_Real Xmin,Ymin,Zmin,Xmax,Ymax,Zmax,U,V,W,U1,V1,W1 ;
Standard_Real Umin,Vmin,Wmin,Umax,Vmax,Wmax ;
Standard_Real Dx,Dy,Dz,Size;
Standard_Integer Nstruct = myView->NumberOfDisplayedStructures() ;
if((Nstruct <= 0) || (Aspect < 0.) || (Margin < 0.) || (Margin > 1.)) {
ImmediateUpdate();
return ;
}
Bnd_Box aBox = myView->MinMaxValues();
if (aBox.IsVoid())
{
ImmediateUpdate();
return ;
}
aBox.Get (Xmin,Ymin,Zmin,Xmax,Ymax,Zmax);
Project (Xmin,Ymin,Zmin,U,V,W) ;
Project (Xmax,Ymax,Zmax,U1,V1,W1) ;
Umin = Min(U,U1) ; Umax = Max(U,U1) ;
Vmin = Min(V,V1) ; Vmax = Max(V,V1) ;
Wmin = Min(W,W1) ; Wmax = Max(W,W1) ;
Project (Xmin,Ymin,Zmax,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmax,Ymin,Zmax,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmax,Ymin,Zmin,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmax,Ymax,Zmin,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmin,Ymax,Zmax,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmin,Ymax,Zmin,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
// Adjust Z size
Wmax = Max(Abs(Wmin),Abs(Wmax)) ;
Dz = 2.*Wmax + Margin * Wmax;
// Compute depth value
Dx = Abs(Umax - Umin) ; Dy = Abs(Vmax - Vmin) ; // Dz = Abs(Wmax - Wmin);
Dx += Margin * Dx; Dy += Margin * Dy;
Size = Sqrt(Dx*Dx + Dy*Dy + Dz*Dz);
if( Size > 0. ) {
SetZSize(Size) ;
SetDepth( Aspect * Size / 2.);
}
ImmediateUpdate();
}
//=============================================================================
//function : WindowFitAll
//purpose :
//=============================================================================
void V3d_View::WindowFitAll(const Standard_Integer Xmin,
const Standard_Integer Ymin,
const Standard_Integer Xmax,
const Standard_Integer Ymax)
{
WindowFit(Xmin,Ymin,Xmax,Ymax);
}
//=======================================================================
//function : WindowFit
//purpose :
//=======================================================================
void V3d_View::WindowFit (const Standard_Integer theMinXp,
const Standard_Integer theMinYp,
const Standard_Integer theMaxXp,
const Standard_Integer theMaxYp)
{
Standard_Boolean wasUpdateEnabled = SetImmediateUpdate (Standard_False);
Handle(Graphic3d_Camera) aCamera = Camera();
if (!aCamera->IsOrthographic())
{
// normalize view coordinates
Standard_Integer aWinWidth, aWinHeight;
MyWindow->Size (aWinWidth, aWinHeight);
// z coordinate of camera center
Standard_Real aDepth = aCamera->Project (aCamera->Center()).Z();
// camera projection coordinate are in NDC which are normalized [-1, 1]
Standard_Real aUMin = (2.0 / aWinWidth) * theMinXp - 1.0;
Standard_Real aUMax = (2.0 / aWinWidth) * theMaxXp - 1.0;
Standard_Real aVMin = (2.0 / aWinHeight) * theMinYp - 1.0;
Standard_Real aVMax = (2.0 / aWinHeight) * theMaxYp - 1.0;
// compute camera panning
gp_Pnt aScreenCenter (0.0, 0.0, aDepth);
gp_Pnt aFitCenter ((aUMin + aUMax) * 0.5, (aVMin + aVMax) * 0.5, aDepth);
gp_Pnt aPanTo = aCamera->ConvertProj2View (aFitCenter);
gp_Pnt aPanFrom = aCamera->ConvertProj2View (aScreenCenter);
gp_Vec aPanVec (aPanFrom, aPanTo);
// compute section size
gp_Pnt aFitTopRight (aUMax, aVMax, aDepth);
gp_Pnt aFitBotLeft (aUMin, aVMin, aDepth);
gp_Pnt aViewBotLeft = aCamera->ConvertProj2View (aFitBotLeft);
gp_Pnt aViewTopRight = aCamera->ConvertProj2View (aFitTopRight);
Standard_Real aUSize = aViewTopRight.X() - aViewBotLeft.X();
Standard_Real aVSize = aViewTopRight.Y() - aViewBotLeft.Y();
Translate (aCamera, aPanVec.X(), -aPanVec.Y());
Scale (aCamera, aUSize, aVSize);
AutoZFit();
}
else
{
Standard_Real aX1, aY1, aX2, aY2;
Convert (theMinXp, theMinYp, aX1, aY1);
Convert (theMaxXp, theMaxYp, aX2, aY2);
FitAll (aX1, aY1, aX2, aY2);
}
SetImmediateUpdate (wasUpdateEnabled);
ImmediateUpdate();
}
//=======================================================================
//function : ConvertToGrid
//purpose :
//=======================================================================
void V3d_View::ConvertToGrid(const Standard_Integer Xp,
const Standard_Integer Yp,
Standard_Real& Xg,
Standard_Real& Yg,
Standard_Real& Zg) const
{
Graphic3d_Vertex aVrp;
Standard_Real anX, anY, aZ;
Convert (Xp, Yp, anX, anY, aZ);
aVrp.SetCoord (anX, anY, aZ);
if( MyViewer->Grid()->IsActive() ) {
Graphic3d_Vertex aNewVrp = Compute (aVrp) ;
aNewVrp.Coord (Xg,Yg,Zg) ;
} else
aVrp.Coord (Xg,Yg,Zg) ;
}
//=======================================================================
//function : ConvertToGrid
//purpose :
//=======================================================================
void V3d_View::ConvertToGrid(const Standard_Real X,
const Standard_Real Y,
const Standard_Real Z,
Standard_Real& Xg,
Standard_Real& Yg,
Standard_Real& Zg) const
{
if( MyViewer->Grid()->IsActive() ) {
Graphic3d_Vertex aVrp (X,Y,Z) ;
Graphic3d_Vertex aNewVrp = Compute (aVrp) ;
aNewVrp.Coord(Xg,Yg,Zg) ;
} else {
Xg = X; Yg = Y; Zg = Z;
}
}
//=======================================================================
//function : Convert
//purpose :
//=======================================================================
Standard_Real V3d_View::Convert(const Standard_Integer Vp) const
{
Standard_Integer aDxw, aDyw ;
V3d_UnMapped_Raise_if (!myView->IsDefined(), "view has no window");
MyWindow->Size (aDxw, aDyw);
Standard_Real aValue;
gp_Pnt aViewDims = Camera()->ViewDimensions();
aValue = aViewDims.X() * (Standard_Real)Vp / (Standard_Real)aDxw;
return aValue;
}
//=======================================================================
//function : Convert
//purpose :
//=======================================================================
void V3d_View::Convert(const Standard_Integer Xp,
const Standard_Integer Yp,
Standard_Real& Xv,
Standard_Real& Yv) const
{
Standard_Integer aDxw, aDyw;
V3d_UnMapped_Raise_if (!myView->IsDefined(), "view has no window");
MyWindow->Size (aDxw, aDyw);
gp_Pnt aPoint (Xp * 2.0 / aDxw - 1.0, (aDyw - Yp) * 2.0 / aDyw - 1.0, 0.0);
aPoint = Camera()->ConvertProj2View (aPoint);
Xv = aPoint.X();
Yv = aPoint.Y();
}
//=======================================================================
//function : Convert
//purpose :
//=======================================================================
Standard_Integer V3d_View::Convert(const Standard_Real Vv) const
{
V3d_UnMapped_Raise_if (!myView->IsDefined(), "view has no window");
Standard_Integer aDxw, aDyw;
MyWindow->Size (aDxw, aDyw);
gp_Pnt aViewDims = Camera()->ViewDimensions();
Standard_Integer aValue = RealToInt (aDxw * Vv / (aViewDims.X()));
return aValue;
}
//=======================================================================
//function : Convert
//purpose :
//=======================================================================
void V3d_View::Convert(const Standard_Real Xv,
const Standard_Real Yv,
Standard_Integer& Xp,
Standard_Integer& Yp) const
{
V3d_UnMapped_Raise_if (!myView->IsDefined(), "view has no window");
Standard_Integer aDxw, aDyw;
MyWindow->Size (aDxw, aDyw);
gp_Pnt aPoint (Xv, Yv, 0.0);
aPoint = Camera()->ConvertView2Proj (aPoint);
aPoint = gp_Pnt ((aPoint.X() + 1.0) * aDxw / 2.0, aDyw - (aPoint.Y() + 1.0) * aDyw / 2.0, 0.0);
Xp = RealToInt (aPoint.X());
Yp = RealToInt (aPoint.Y());
}
//=======================================================================
//function : Convert
//purpose :
//=======================================================================
void V3d_View::Convert(const Standard_Integer Xp,
const Standard_Integer Yp,
Standard_Real& X,
Standard_Real& Y,
Standard_Real& Z) const
{
V3d_UnMapped_Raise_if (!myView->IsDefined(), "view has no window");
Standard_Integer aHeight, aWidth;
MyWindow->Size (aWidth, aHeight);
Standard_Real anX = 2.0 * Xp / aWidth - 1.0;
Standard_Real anY = 2.0 * (aHeight - 1 - Yp) / aHeight - 1.0;
Standard_Real aZ = 2.0 * 0.0 - 1.0;
gp_Pnt aResult = Camera()->UnProject (gp_Pnt (anX, anY, aZ));
X = aResult.X();
Y = aResult.Y();
Z = aResult.Z();
}
//=======================================================================
//function : ConvertWithProj
//purpose :
//=======================================================================
void V3d_View::ConvertWithProj(const Standard_Integer Xp,
const Standard_Integer Yp,
Standard_Real& X,
Standard_Real& Y,
Standard_Real& Z,
Standard_Real& Dx,
Standard_Real& Dy,
Standard_Real& Dz) const
{
V3d_UnMapped_Raise_if (!myView->IsDefined(), "view has no window");
Standard_Integer aHeight, aWidth;
MyWindow->Size (aWidth, aHeight);
Standard_Real anX = 2.0 * Xp / aWidth - 1.0;
Standard_Real anY = 2.0 * (aHeight - 1 - Yp) / aHeight - 1.0;
Standard_Real aZ = 2.0 * 0.0 - 1.0;
Handle(Graphic3d_Camera) aCamera = Camera();
gp_Pnt aResult = aCamera->UnProject (gp_Pnt (anX, anY, aZ));
X = aResult.X();
Y = aResult.Y();
Z = aResult.Z();
Graphic3d_Vertex aVrp;
aVrp.SetCoord (X, Y, Z);
aResult = aCamera->UnProject (gp_Pnt (anX, anY, aZ - 10.0));
Graphic3d_Vec3d aNormDir;
aNormDir.x() = X - aResult.X();
aNormDir.y() = Y - aResult.Y();
aNormDir.z() = Z - aResult.Z();
aNormDir.Normalize();
Dx = aNormDir.x();
Dy = aNormDir.y();
Dz = aNormDir.z();
}
//=======================================================================
//function : Convert
//purpose :
//=======================================================================
void V3d_View::Convert(const Standard_Real X,
const Standard_Real Y,
const Standard_Real Z,
Standard_Integer& Xp,
Standard_Integer& Yp) const
{
V3d_UnMapped_Raise_if (!myView->IsDefined(), "view has no window");
Standard_Integer aHeight, aWidth;
MyWindow->Size (aWidth, aHeight);
gp_Pnt aPoint = Camera()->Project (gp_Pnt (X, Y, Z));
Xp = RealToInt ((aPoint.X() + 1) * 0.5 * aWidth);
Yp = RealToInt (aHeight - 1 - (aPoint.Y() + 1) * 0.5 * aHeight);
}
//=======================================================================
//function : Project
//purpose :
//=======================================================================
void V3d_View::Project (const Standard_Real theX,
const Standard_Real theY,
const Standard_Real theZ,
Standard_Real& theXp,
Standard_Real& theYp) const
{
Standard_Real aZp;
Project (theX, theY, theZ, theXp, theYp, aZp);
}
//=======================================================================
//function : Project
//purpose :
//=======================================================================
void V3d_View::Project (const Standard_Real theX,
const Standard_Real theY,
const Standard_Real theZ,
Standard_Real& theXp,
Standard_Real& theYp,
Standard_Real& theZp) const
{
Handle(Graphic3d_Camera) aCamera = Camera();
gp_XYZ aViewSpaceDimensions = aCamera->ViewDimensions();
Standard_Real aXSize = aViewSpaceDimensions.X();
Standard_Real aYSize = aViewSpaceDimensions.Y();
Standard_Real aZSize = aViewSpaceDimensions.Z();
gp_Pnt aPoint = aCamera->Project (gp_Pnt (theX, theY, theZ));
// NDC [-1, 1] --> PROJ [ -size / 2, +size / 2 ]
theXp = aPoint.X() * aXSize * 0.5;
theYp = aPoint.Y() * aYSize * 0.5;
theZp = aPoint.Z() * aZSize * 0.5;
}
//=======================================================================
//function : BackgroundColor
//purpose :
//=======================================================================
void V3d_View::BackgroundColor(const Quantity_TypeOfColor Type,
Standard_Real& V1,
Standard_Real& V2,
Standard_Real& V3) const
{
Quantity_Color C = BackgroundColor() ;
C.Values(V1,V2,V3,Type) ;
}
//=======================================================================
//function : BackgroundColor
//purpose :
//=======================================================================
Quantity_Color V3d_View::BackgroundColor() const
{
return myView->Background().Color() ;
}
//=======================================================================
//function : GradientBackgroundColors
//purpose :
//=======================================================================
void V3d_View::GradientBackgroundColors (Quantity_Color& theColor1, Quantity_Color& theColor2) const
{
myView->GradientBackground().Colors (theColor1, theColor2);
}
//=======================================================================
//function : GradientBackground
//purpose :
//=======================================================================
Aspect_GradientBackground V3d_View::GradientBackground() const
{
return myView->GradientBackground();
}
//=======================================================================
//function : Scale
//purpose :
//=======================================================================
Standard_Real V3d_View::Scale() const
{
return myDefaultCamera->Scale() / Camera()->Scale();
}
//=======================================================================
//function : AxialScale
//purpose :
//=======================================================================
void V3d_View::AxialScale(Standard_Real& Sx, Standard_Real& Sy, Standard_Real& Sz) const
{
gp_Pnt anAxialScale = Camera()->AxialScale();
Sx = anAxialScale.X();
Sy = anAxialScale.Y();
Sz = anAxialScale.Z();
}
//=======================================================================
//function : Size
//purpose :
//=======================================================================
void V3d_View::Size(Standard_Real& Width, Standard_Real& Height) const
{
gp_Pnt aViewDims = Camera()->ViewDimensions();
Width = aViewDims.X();
Height = aViewDims.Y();
}
//=======================================================================
//function : ZSize
//purpose :
//=======================================================================
Standard_Real V3d_View::ZSize() const
{
gp_Pnt aViewDims = Camera()->ViewDimensions();
return aViewDims.Z();
}
//=======================================================================
//function : MinMax
//purpose :
//=======================================================================
Standard_Integer V3d_View::MinMax(Standard_Real& Umin,
Standard_Real& Vmin,
Standard_Real& Umax,
Standard_Real& Vmax) const
{
Standard_Real Wmin,Wmax,U,V,W ;
Standard_Real Xmin,Ymin,Zmin,Xmax,Ymax,Zmax ;
// CAL 6/11/98
Standard_Integer Nstruct = myView->NumberOfDisplayedStructures() ;
if( Nstruct ) {
Bnd_Box aBox = myView->MinMaxValues();
aBox.Get (Xmin,Ymin,Zmin,Xmax,Ymax,Zmax);
Project (Xmin,Ymin,Zmin,Umin,Vmin,Wmin) ;
Project (Xmax,Ymax,Zmax,Umax,Vmax,Wmax) ;
Project (Xmin,Ymin,Zmax,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmax,Ymin,Zmax,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmax,Ymin,Zmin,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmax,Ymax,Zmin,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmin,Ymax,Zmax,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
Project (Xmin,Ymax,Zmin,U,V,W) ;
Umin = Min(U,Umin) ; Umax = Max(U,Umax) ;
Vmin = Min(V,Vmin) ; Vmax = Max(V,Vmax) ;
Wmin = Min(W,Wmin) ; Wmax = Max(W,Wmax) ;
}
return Nstruct ;
}
//=======================================================================
//function : MinMax
//purpose :
//=======================================================================
Standard_Integer V3d_View::MinMax(Standard_Real& Xmin,
Standard_Real& Ymin,
Standard_Real& Zmin,
Standard_Real& Xmax,
Standard_Real& Ymax,
Standard_Real& Zmax) const
{
// CAL 6/11/98
// Standard_Integer Nstruct = (MyView->DisplayedStructures())->Extent() ;
Standard_Integer Nstruct = myView->NumberOfDisplayedStructures() ;
if( Nstruct ) {
Bnd_Box aBox = myView->MinMaxValues();
aBox.Get (Xmin,Ymin,Zmin,Xmax,Ymax,Zmax);
}
return Nstruct ;
}
//=======================================================================
//function : Gravity
//purpose :
//=======================================================================
void V3d_View::Gravity (Standard_Real& theX,
Standard_Real& theY,
Standard_Real& theZ) const
{
Graphic3d_MapOfStructure aSetOfStructures;
myView->DisplayedStructures (aSetOfStructures);
Standard_Boolean hasSelection = Standard_False;
for (Graphic3d_MapIteratorOfMapOfStructure aStructIter (aSetOfStructures);
aStructIter.More(); aStructIter.Next())
{
if (aStructIter.Key()->IsHighlighted()
&& aStructIter.Key()->IsVisible())
{
hasSelection = Standard_True;
break;
}
}
Standard_Real Xmin, Ymin, Zmin, Xmax, Ymax, Zmax;
Standard_Integer aNbPoints = 0;
gp_XYZ aResult (0.0, 0.0, 0.0);
for (Graphic3d_MapIteratorOfMapOfStructure aStructIter (aSetOfStructures);
aStructIter.More(); aStructIter.Next())
{
const Handle(Graphic3d_Structure)& aStruct = aStructIter.Key();
if (!aStruct->IsVisible()
|| aStruct->IsInfinite()
|| (hasSelection && !aStruct->IsHighlighted()))
{
continue;
}
const Graphic3d_BndBox3d& aBox = aStruct->CStructure()->BoundingBox();
if (!aBox.IsValid())
{
continue;
}
// skip transformation-persistent objects
if (!aStruct->TransformPersistence().IsNull())
{
continue;
}
// use camera projection to find gravity point
Xmin = aBox.CornerMin().x();
Ymin = aBox.CornerMin().y();
Zmin = aBox.CornerMin().z();
Xmax = aBox.CornerMax().x();
Ymax = aBox.CornerMax().y();
Zmax = aBox.CornerMax().z();
gp_Pnt aPnts[THE_NB_BOUND_POINTS] =
{
gp_Pnt (Xmin, Ymin, Zmin), gp_Pnt (Xmin, Ymin, Zmax),
gp_Pnt (Xmin, Ymax, Zmin), gp_Pnt (Xmin, Ymax, Zmax),
gp_Pnt (Xmax, Ymin, Zmin), gp_Pnt (Xmax, Ymin, Zmax),
gp_Pnt (Xmax, Ymax, Zmin), gp_Pnt (Xmax, Ymax, Zmax)
};
for (Standard_Integer aPntIt = 0; aPntIt < THE_NB_BOUND_POINTS; ++aPntIt)
{
const gp_Pnt& aBndPnt = aPnts[aPntIt];
const gp_Pnt aProjected = Camera()->Project (aBndPnt);
if (Abs (aProjected.X()) <= 1.0
&& Abs (aProjected.Y()) <= 1.0)
{
aResult += aBndPnt.XYZ();
++aNbPoints;
}
}
}
if (aNbPoints == 0)
{
// fallback - just use bounding box of entire scene
Bnd_Box aBox = myView->MinMaxValues();
if (!aBox.IsVoid())
{
aBox.Get (Xmin, Ymin, Zmin,
Xmax, Ymax, Zmax);
gp_Pnt aPnts[THE_NB_BOUND_POINTS] =
{
gp_Pnt (Xmin, Ymin, Zmin), gp_Pnt (Xmin, Ymin, Zmax),
gp_Pnt (Xmin, Ymax, Zmin), gp_Pnt (Xmin, Ymax, Zmax),
gp_Pnt (Xmax, Ymin, Zmin), gp_Pnt (Xmax, Ymin, Zmax),
gp_Pnt (Xmax, Ymax, Zmin), gp_Pnt (Xmax, Ymax, Zmax)
};
for (Standard_Integer aPntIt = 0; aPntIt < THE_NB_BOUND_POINTS; ++aPntIt)
{
const gp_Pnt& aBndPnt = aPnts[aPntIt];
aResult += aBndPnt.XYZ();
++aNbPoints;
}
}
}
if (aNbPoints > 0)
{
aResult /= aNbPoints;
}
theX = aResult.X();
theY = aResult.Y();
theZ = aResult.Z();
}
//=======================================================================
//function : Eye
//purpose :
//=======================================================================
void V3d_View::Eye(Standard_Real& X, Standard_Real& Y, Standard_Real& Z) const
{
gp_Pnt aCameraEye = Camera()->Eye();
X = aCameraEye.X();
Y = aCameraEye.Y();
Z = aCameraEye.Z();
}
//=============================================================================
//function : FocalReferencePoint
//purpose :
//=============================================================================
void V3d_View::FocalReferencePoint(Standard_Real& X, Standard_Real& Y,Standard_Real& Z) const
{
Eye (X,Y,Z);
}
//=============================================================================
//function : ProjReferenceAxe
//purpose :
//=============================================================================
void V3d_View::ProjReferenceAxe(const Standard_Integer Xpix,
const Standard_Integer Ypix,
Standard_Real& XP,
Standard_Real& YP,
Standard_Real& ZP,
Standard_Real& VX,
Standard_Real& VY,
Standard_Real& VZ) const
{
Standard_Real Xo,Yo,Zo;
Convert (Xpix, Ypix, XP, YP, ZP);
if ( Type() == V3d_PERSPECTIVE )
{
FocalReferencePoint (Xo,Yo,Zo);
VX = Xo - XP;
VY = Yo - YP;
VZ = Zo - ZP;
}
else
{
Proj (VX,VY,VZ);
}
}
//=============================================================================
//function : Depth
//purpose :
//=============================================================================
Standard_Real V3d_View::Depth() const
{
return Camera()->Distance();
}
//=============================================================================
//function : Proj
//purpose :
//=============================================================================
void V3d_View::Proj(Standard_Real& Dx, Standard_Real& Dy, Standard_Real& Dz) const
{
gp_Dir aCameraDir = Camera()->Direction().Reversed();
Dx = aCameraDir.X();
Dy = aCameraDir.Y();
Dz = aCameraDir.Z();
}
//=============================================================================
//function : At
//purpose :
//=============================================================================
void V3d_View::At(Standard_Real& X, Standard_Real& Y, Standard_Real& Z) const
{
gp_Pnt aCameraCenter = Camera()->Center();
X = aCameraCenter.X();
Y = aCameraCenter.Y();
Z = aCameraCenter.Z();
}
//=============================================================================
//function : Up
//purpose :
//=============================================================================
void V3d_View::Up(Standard_Real& Vx, Standard_Real& Vy, Standard_Real& Vz) const
{
gp_Dir aCameraUp = Camera()->Up();
Vx = aCameraUp.X();
Vy = aCameraUp.Y();
Vz = aCameraUp.Z();
}
//=============================================================================
//function : Twist
//purpose :
//=============================================================================
Standard_Real V3d_View::Twist() const
{
Standard_Real Xup,Yup,Zup,Xpn,Ypn,Zpn,X0,Y0,Z0 ;
Standard_Real pvx,pvy,pvz,pvn,sca,angle ;
Graphic3d_Vector Xaxis,Yaxis,Zaxis ;
Standard_Boolean TheStatus ;
gp_Dir aReferencePlane (Camera()->Direction().Reversed());
gp_Dir anUp;
Proj(Xpn,Ypn,Zpn);
anUp = gp_Dir (0.,0.,1.) ;
TheStatus = ScreenAxis (aReferencePlane, anUp,Xaxis,Yaxis,Zaxis) ;
if( !TheStatus ) {
anUp = gp_Dir (0.,1.,0.) ;
TheStatus = ScreenAxis (aReferencePlane, anUp,Xaxis,Yaxis,Zaxis) ;
}
if( !TheStatus ) {
anUp = gp_Dir (1.,0.,0.) ;
TheStatus = ScreenAxis (aReferencePlane, anUp,Xaxis,Yaxis,Zaxis) ;
}
Yaxis.Coord(X0,Y0,Z0) ;
Up(Xup,Yup,Zup) ;
/* Compute Cross Vector From Up & Origin */
pvx = Y0*Zup - Z0*Yup ;
pvy = Z0*Xup - X0*Zup ;
pvz = X0*Yup - Y0*Xup ;
pvn = pvx*pvx + pvy*pvy + pvz*pvz ;
sca = X0*Xup + Y0*Yup + Z0*Zup ;
/* Compute Angle */
angle = Sqrt(pvn) ;
if( angle > 1. ) angle = 1. ;
else if( angle < -1. ) angle = -1. ;
angle = asin(angle) ;
if( sca < 0. ) angle = M_PI - angle ;
if( angle > 0. && angle < M_PI ) {
sca = pvx*Xpn + pvy*Ypn + pvz*Zpn ;
if( sca < 0. ) angle = DEUXPI - angle ;
}
return angle ;
}
//=============================================================================
//function : ShadingModel
//purpose :
//=============================================================================
V3d_TypeOfShadingModel V3d_View::ShadingModel() const
{
return static_cast<V3d_TypeOfShadingModel> (myView->ShadingModel());
}
//=============================================================================
//function : TextureEnv
//purpose :
//=============================================================================
Handle(Graphic3d_TextureEnv) V3d_View::TextureEnv() const
{
return myView->TextureEnv();
}
//=============================================================================
//function : Visualization
//purpose :
//=============================================================================
V3d_TypeOfVisualization V3d_View::Visualization() const
{
return static_cast<V3d_TypeOfVisualization> (myView->VisualizationType());
}
//=============================================================================
//function : Viewer
//purpose :
//=============================================================================
Handle(V3d_Viewer) V3d_View::Viewer() const
{
return MyViewer;
}
//=============================================================================
//function : IfWindow
//purpose :
//=============================================================================
Standard_Boolean V3d_View::IfWindow() const
{
return myView->IsDefined();
}
//=============================================================================
//function : Window
//purpose :
//=============================================================================
Handle(Aspect_Window) V3d_View::Window() const
{
return MyWindow;
}
//=============================================================================
//function : Type
//purpose :
//=============================================================================
V3d_TypeOfView V3d_View::Type() const
{
return Camera()->IsOrthographic() ? V3d_ORTHOGRAPHIC : V3d_PERSPECTIVE;
}
//=============================================================================
//function : SetFocale
//purpose :
//=============================================================================
void V3d_View::SetFocale( const Standard_Real focale )
{
Handle(Graphic3d_Camera) aCamera = Camera();
if (aCamera->IsOrthographic())
{
return;
}
Standard_Real aFOVyRad = ATan (focale / (aCamera->Distance() * 2.0));
aCamera->SetFOVy (aFOVyRad * (360 / M_PI));
ImmediateUpdate();
}
//=============================================================================
//function : Focale
//purpose :
//=============================================================================
Standard_Real V3d_View::Focale() const
{
Handle(Graphic3d_Camera) aCamera = Camera();
if (aCamera->IsOrthographic())
{
return 0.0;
}
return aCamera->Distance() * 2.0 * Tan (aCamera->FOVy() * M_PI / 360.0);
}
//=============================================================================
//function : View
//purpose :
//=============================================================================
Handle(Graphic3d_CView) V3d_View::View() const
{
return myView;
}
//=============================================================================
//function : ScreenAxis
//purpose :
//=============================================================================
Standard_Boolean V3d_View::ScreenAxis( const gp_Dir &Vpn, const gp_Dir &Vup, Graphic3d_Vector &Xaxe, Graphic3d_Vector &Yaxe, Graphic3d_Vector &Zaxe)
{
Standard_Real Xpn, Ypn, Zpn, Xup, Yup, Zup;
Standard_Real dx1, dy1, dz1, xx, yy, zz;
Xpn = Vpn.X(); Ypn = Vpn.Y(); Zpn = Vpn.Z();
Xup = Vup.X(); Yup = Vup.Y(); Zup = Vup.Z();
xx = Yup*Zpn - Zup*Ypn;
yy = Zup*Xpn - Xup*Zpn;
zz = Xup*Ypn - Yup*Xpn;
Xaxe.SetCoord (xx, yy, zz);
if (Xaxe.LengthZero()) return Standard_False;
Xaxe.Normalize();
Xaxe.Coord(dx1, dy1, dz1);
xx = Ypn*dz1 - Zpn*dy1;
yy = Zpn*dx1 - Xpn*dz1;
zz = Xpn*dy1 - Ypn*dx1;
Yaxe.SetCoord (xx, yy, zz) ;
if (Yaxe.LengthZero()) return Standard_False;
Yaxe.Normalize();
Zaxe.SetCoord (Xpn, Ypn, Zpn);
Zaxe.Normalize();
return Standard_True;
}
//=============================================================================
//function : TrsPoint
//purpose :
//=============================================================================
Graphic3d_Vertex V3d_View::TrsPoint( const Graphic3d_Vertex &P, const TColStd_Array2OfReal &Matrix )
{
Graphic3d_Vertex PP ;
Standard_Real X,Y,Z,XX,YY,ZZ ;
// CAL. S3892
Standard_Integer lr, ur, lc, uc;
lr = Matrix.LowerRow ();
ur = Matrix.UpperRow ();
lc = Matrix.LowerCol ();
uc = Matrix.UpperCol ();
if ((ur - lr + 1 != 4) || (uc - lc + 1 != 4) ) {
P.Coord(X,Y,Z) ;
PP.SetCoord(X,Y,Z) ;
return PP ;
}
P.Coord(X,Y,Z) ;
XX = (Matrix(lr,lc+3) + X*Matrix(lr,lc) + Y*Matrix(lr,lc+1)+
Z*Matrix(lr,lc+2))/Matrix(lr+3,lc+3) ;
YY = (Matrix(lr+1,lc+3) + X*Matrix(lr+1,lc) + Y*Matrix(lr+1,lc+1) +
Z*Matrix(lr+1,lc+2))/Matrix(lr+3,lc+3) ;
ZZ = (Matrix(lr+2,lc+3) + X*Matrix(lr+2,lc) + Y*Matrix(lr+2,lc+1) +
Z*Matrix(lr+2,lc+2))/Matrix(lr+3,lc+3) ;
PP.SetCoord(XX,YY,ZZ) ;
return PP ;
}
//=======================================================================
//function : Pan
//purpose :
//=======================================================================
void V3d_View::Pan (const Standard_Integer theDXp,
const Standard_Integer theDYp,
const Quantity_Factor theZoomFactor,
const Standard_Boolean theToStart)
{
Panning (Convert (theDXp), Convert (theDYp), theZoomFactor, theToStart);
}
//=======================================================================
//function : Panning
//purpose :
//=======================================================================
void V3d_View::Panning (const Standard_Real theDXv,
const Standard_Real theDYv,
const Quantity_Factor theZoomFactor,
const Standard_Boolean theToStart)
{
Standard_ASSERT_RAISE (theZoomFactor > 0.0, "Bad zoom factor");
Handle(Graphic3d_Camera) aCamera = Camera();
if (theToStart)
{
myCamStartOpEye = aCamera->Eye();
myCamStartOpCenter = aCamera->Center();
}
Standard_Boolean wasUpdateEnabled = SetImmediateUpdate (Standard_False);
gp_Pnt aViewDims = aCamera->ViewDimensions();
aCamera->SetEye (myCamStartOpEye);
aCamera->SetCenter (myCamStartOpCenter);
Translate (aCamera, -theDXv, -theDYv);
Scale (aCamera, aViewDims.X() / theZoomFactor, aViewDims.Y() / theZoomFactor);
SetImmediateUpdate (wasUpdateEnabled);
ImmediateUpdate();
}
//=======================================================================
//function : Zoom
//purpose :
//=======================================================================
void V3d_View::Zoom (const Standard_Integer theXp1,
const Standard_Integer theYp1,
const Standard_Integer theXp2,
const Standard_Integer theYp2)
{
Standard_Integer aDx = theXp2 - theXp1;
Standard_Integer aDy = theYp2 - theYp1;
if (aDx != 0 || aDy != 0)
{
Standard_Real aCoeff = Sqrt( (Standard_Real)(aDx * aDx + aDy * aDy) ) / 100.0 + 1.0;
aCoeff = (aDx > 0) ? aCoeff : 1.0 / aCoeff;
SetZoom (aCoeff, Standard_True);
}
}
//=======================================================================
//function : StartZoomAtPoint
//purpose :
//=======================================================================
void V3d_View::StartZoomAtPoint (const Standard_Integer theXp,
const Standard_Integer theYp)
{
MyZoomAtPointX = theXp;
MyZoomAtPointY = theYp;
}
//=======================================================================
//function : ZoomAtPoint
//purpose :
//=======================================================================
void V3d_View::ZoomAtPoint (const Standard_Integer theMouseStartX,
const Standard_Integer theMouseStartY,
const Standard_Integer theMouseEndX,
const Standard_Integer theMouseEndY)
{
Standard_Boolean wasUpdateEnabled = SetImmediateUpdate (Standard_False);
// zoom
Standard_Real aDxy = Standard_Real ((theMouseEndX + theMouseEndY) - (theMouseStartX + theMouseStartY));
Standard_Real aDZoom = Abs (aDxy) / 100.0 + 1.0;
aDZoom = (aDxy > 0.0) ? aDZoom : 1.0 / aDZoom;
V3d_BadValue_Raise_if (aDZoom <= 0.0, "V3d_View::ZoomAtPoint, bad coefficient");
Handle(Graphic3d_Camera) aCamera = Camera();
Standard_Real aViewWidth = aCamera->ViewDimensions().X();
Standard_Real aViewHeight = aCamera->ViewDimensions().Y();
// ensure that zoom will not be too small or too big.
Standard_Real aCoef = aDZoom;
if (aViewWidth < aCoef * Precision::Confusion())
{
aCoef = aViewWidth / Precision::Confusion();
}
else if (aViewWidth > aCoef * 1e12)
{
aCoef = aViewWidth / 1e12;
}
if (aViewHeight < aCoef * Precision::Confusion())
{
aCoef = aViewHeight / Precision::Confusion();
}
else if (aViewHeight > aCoef * 1e12)
{
aCoef = aViewHeight / 1e12;
}
Standard_Real aZoomAtPointXv = 0.0;
Standard_Real aZoomAtPointYv = 0.0;
Convert (MyZoomAtPointX, MyZoomAtPointY, aZoomAtPointXv, aZoomAtPointYv);
V3d_Coordinate aDxv = aZoomAtPointXv / aCoef;
V3d_Coordinate aDyv = aZoomAtPointYv / aCoef;
aCamera->SetScale (aCamera->Scale() / aCoef);
Translate (aCamera, aZoomAtPointXv - aDxv, aZoomAtPointYv - aDyv);
AutoZFit();
SetImmediateUpdate (wasUpdateEnabled);
ImmediateUpdate();
}
//=============================================================================
//function : AxialScale
//purpose :
//=============================================================================
void V3d_View::AxialScale (const Standard_Integer Dx,
const Standard_Integer Dy,
const V3d_TypeOfAxe Axis)
{
if( Dx != 0. || Dy != 0. ) {
Standard_Real Sx, Sy, Sz;
AxialScale( Sx, Sy, Sz );
Standard_Real dscale = Sqrt(Dx*Dx + Dy*Dy) / 100. + 1;
dscale = (Dx > 0) ? dscale : 1./dscale;
if( Axis == V3d_X ) Sx = dscale;
if( Axis == V3d_Y ) Sy = dscale;
if( Axis == V3d_Z ) Sz = dscale;
SetAxialScale( Sx, Sy, Sz );
}
}
//=============================================================================
//function : FitAll
//purpose :
//=============================================================================
void V3d_View::FitAll(const Standard_Real theXmin,
const Standard_Real theYmin,
const Standard_Real theXmax,
const Standard_Real theYmax)
{
Handle(Graphic3d_Camera) aCamera = Camera();
Standard_Real anAspect = aCamera->Aspect();
Standard_Real aFitSizeU = Abs (theXmax - theXmin);
Standard_Real aFitSizeV = Abs (theYmax - theYmin);
Standard_Real aFitAspect = aFitSizeU / aFitSizeV;
if (aFitAspect >= anAspect)
{
aFitSizeV = aFitSizeU / anAspect;
}
else
{
aFitSizeU = aFitSizeV * anAspect;
}
Translate (aCamera, (theXmin + theXmax) * 0.5, (theYmin + theYmax) * 0.5);
Scale (aCamera, aFitSizeU, aFitSizeV);
AutoZFit();
ImmediateUpdate();
}
//=============================================================================
//function : StartRotation
//purpose :
//=============================================================================
void V3d_View::StartRotation(const Standard_Integer X,
const Standard_Integer Y,
const Quantity_Ratio zRotationThreshold)
{
sx = X; sy = Y;
Standard_Real x,y;
Size(x,y);
rx = Standard_Real(Convert(x));
ry = Standard_Real(Convert(y));
Gravity(gx,gy,gz);
Rotate(0.,0.,0.,gx,gy,gz,Standard_True);
myZRotation = Standard_False;
if( zRotationThreshold > 0. ) {
Standard_Real dx = Abs(sx - rx/2.);
Standard_Real dy = Abs(sy - ry/2.);
// if( dx > rx/3. || dy > ry/3. ) myZRotation = Standard_True;
Standard_Real dd = zRotationThreshold * (rx + ry)/2.;
if( dx > dd || dy > dd ) myZRotation = Standard_True;
}
}
//=============================================================================
//function : Rotation
//purpose :
//=============================================================================
void V3d_View::Rotation(const Standard_Integer X,
const Standard_Integer Y)
{
if( rx == 0. || ry == 0. ) {
StartRotation(X,Y);
return;
}
Standard_Real dx=0.,dy=0.,dz=0.;
if( myZRotation ) {
dz = atan2(Standard_Real(X)-rx/2., ry/2.-Standard_Real(Y)) -
atan2(sx-rx/2.,ry/2.-sy);
} else {
dx = (Standard_Real(X) - sx) * M_PI / rx;
dy = (sy - Standard_Real(Y)) * M_PI / ry;
}
Rotate(dx, dy, dz, gx, gy, gz, Standard_False);
}
//=============================================================================
//function : SetComputedMode
//purpose :
//=============================================================================
void V3d_View::SetComputedMode (const Standard_Boolean theMode)
{
if (theMode)
{
if (myComputedMode)
{
myView->SetComputedMode (Standard_True);
Update();
}
}
else
{
myView->SetComputedMode (Standard_False);
Update();
}
}
//=============================================================================
//function : ComputedMode
//purpose :
//=============================================================================
Standard_Boolean V3d_View::ComputedMode() const
{
return myView->ComputedMode();
}
//=============================================================================
//function : SetBackFacingModel
//purpose :
//=============================================================================
void V3d_View::SetBackFacingModel (const V3d_TypeOfBackfacingModel theModel)
{
myView->SetBackfacingModel (static_cast<Graphic3d_TypeOfBackfacingModel> (theModel));
Redraw();
}
//=============================================================================
//function : BackFacingModel
//purpose :
//=============================================================================
V3d_TypeOfBackfacingModel V3d_View::BackFacingModel() const
{
return static_cast<V3d_TypeOfBackfacingModel> (myView->BackfacingModel());
}
//=============================================================================
//function : Init
//purpose :
//=============================================================================
void V3d_View::Init()
{
myComputedMode = MyViewer->ComputedMode();
if (!myComputedMode || !MyViewer->DefaultComputedMode())
{
SetComputedMode (Standard_False);
}
}
//=============================================================================
//function : Export
//purpose :
//=============================================================================
Standard_Boolean V3d_View::Export (const Standard_CString theFileName,
const Graphic3d_ExportFormat theFormat,
const Graphic3d_SortType theSortType)
{
return myView->Export (theFileName, theFormat, theSortType);
}
//=============================================================================
//function : Dump
//purpose :
//=============================================================================
Standard_Boolean V3d_View::Dump (const Standard_CString theFile,
const Graphic3d_BufferType& theBufferType)
{
Standard_Integer aWinWidth, aWinHeight;
MyWindow->Size (aWinWidth, aWinHeight);
Image_AlienPixMap anImage;
return ToPixMap (anImage, aWinWidth, aWinHeight, theBufferType) && anImage.Save (theFile);
}
//=============================================================================
//function : ToPixMap
//purpose :
//=============================================================================
Standard_Boolean V3d_View::ToPixMap (Image_PixMap& theImage,
const V3d_ImageDumpOptions& theParams)
{
Graphic3d_Vec2i aTargetSize (theParams.Width, theParams.Height);
if (aTargetSize.x() != 0
&& aTargetSize.y() != 0)
{
// allocate image buffer for dumping
if (theImage.IsEmpty()
|| theImage.SizeX() != Standard_Size(aTargetSize.x())
|| theImage.SizeY() != Standard_Size(aTargetSize.y()))
{
Image_Format aFormat = Image_Format_UNKNOWN;
switch (theParams.BufferType)
{
case Graphic3d_BT_RGB: aFormat = Image_Format_RGB; break;
case Graphic3d_BT_RGBA: aFormat = Image_Format_RGBA; break;
case Graphic3d_BT_Depth: aFormat = Image_Format_GrayF; break;
case Graphic3d_BT_RGB_RayTraceHdrLeft: aFormat = Image_Format_RGBF; break;
}
if (!theImage.InitZero (aFormat, Standard_Size(aTargetSize.x()), Standard_Size(aTargetSize.y())))
{
Message::DefaultMessenger()->Send (TCollection_AsciiString ("Fail to allocate an image ") + aTargetSize.x() + "x" + aTargetSize.y()
+ " for view dump", Message_Fail);
return Standard_False;
}
}
}
if (theImage.IsEmpty())
{
Message::DefaultMessenger()->Send (TCollection_AsciiString ("V3d_View::ToPixMap() has been called without image dimensions"), Message_Fail);
return Standard_False;
}
aTargetSize.x() = (Standard_Integer )theImage.SizeX();
aTargetSize.y() = (Standard_Integer )theImage.SizeY();
Handle(Standard_Transient) aFBOPtr;
Handle(Standard_Transient) aPrevFBOPtr = myView->FBO();
Graphic3d_Vec2i aFBOVPSize = aTargetSize;
bool isTiling = false;
if (theParams.TileSize > 0)
{
if (aFBOVPSize.x() > theParams.TileSize
|| aFBOVPSize.y() > theParams.TileSize)
{
aFBOVPSize.x() = Min (aFBOVPSize.x(), theParams.TileSize);
aFBOVPSize.y() = Min (aFBOVPSize.y(), theParams.TileSize);
isTiling = true;
}
}
Graphic3d_Vec2i aPrevFBOVPSize;
if (!aPrevFBOPtr.IsNull())
{
Graphic3d_Vec2i aPrevFBOSizeMax;
myView->FBOGetDimensions (aPrevFBOPtr,
aPrevFBOVPSize.x(), aPrevFBOVPSize.y(),
aPrevFBOSizeMax.x(), aPrevFBOSizeMax.y());
if (aFBOVPSize.x() <= aPrevFBOSizeMax.x()
&& aFBOVPSize.y() <= aPrevFBOSizeMax.y())
{
aFBOPtr = aPrevFBOPtr;
}
}
if (aFBOPtr.IsNull())
{
Standard_Integer aMaxTexSize = MyViewer->Driver()->InquireLimit (Graphic3d_TypeOfLimit_MaxTextureSize);
if (theParams.TileSize > aMaxTexSize)
{
Message::DefaultMessenger()->Send (TCollection_AsciiString ("Image dump can not be performed - specified tile size (")
+ theParams.TileSize + ") exceeds hardware limits (" + aMaxTexSize + ")", Message_Fail);
return Standard_False;
}
if (aFBOVPSize.x() > aMaxTexSize
|| aFBOVPSize.y() > aMaxTexSize)
{
aFBOVPSize.x() = Min (aFBOVPSize.x(), aMaxTexSize);
aFBOVPSize.y() = Min (aFBOVPSize.y(), aMaxTexSize);
isTiling = true;
}
// Try to create hardware accelerated buffer
aFBOPtr = myView->FBOCreate (aFBOVPSize.x(), aFBOVPSize.y());
}
myView->SetFBO (aFBOPtr);
if (aFBOPtr.IsNull())
{
// try to use on-screen buffer
Graphic3d_Vec2i aWinSize;
MyWindow->Size (aWinSize.x(), aWinSize.y());
if (aFBOVPSize.x() != aWinSize.x()
|| aFBOVPSize.y() != aWinSize.y())
{
isTiling = true;
}
aFBOVPSize = aWinSize;
Message::DefaultMessenger()->Send (TCollection_AsciiString ("Warning, on screen buffer is used for image dump - content might be invalid"), Message_Warning);
}
// backup camera parameters
Handle(Graphic3d_Camera) aStoreMapping = new Graphic3d_Camera();
Handle(Graphic3d_Camera) aCamera = Camera();
aStoreMapping->Copy (aCamera);
if (aCamera->IsStereo())
{
switch (theParams.StereoOptions)
{
case V3d_SDO_MONO:
{
aCamera->SetProjectionType (Graphic3d_Camera::Projection_Perspective);
break;
}
case V3d_SDO_LEFT_EYE:
{
aCamera->SetProjectionType (Graphic3d_Camera::Projection_MonoLeftEye);
break;
}
case V3d_SDO_RIGHT_EYE:
{
aCamera->SetProjectionType (Graphic3d_Camera::Projection_MonoRightEye);
break;
}
case V3d_SDO_BLENDED:
{
break; // dump as is
}
}
}
if (theParams.ToAdjustAspect)
{
aCamera->SetAspect (Standard_Real(aTargetSize.x()) / Standard_Real(aTargetSize.y()));
}
AutoZFit();
// render immediate structures into back buffer rather than front
const Standard_Boolean aPrevImmediateMode = myView->SetImmediateModeDrawToFront (Standard_False);
Standard_Boolean isSuccess = Standard_True;
if (!isTiling)
{
if (!aFBOPtr.IsNull())
{
myView->FBOChangeViewport (aFBOPtr, aTargetSize.x(), aTargetSize.y());
}
Redraw();
isSuccess = isSuccess && myView->BufferDump (theImage, theParams.BufferType);
}
else
{
Image_PixMap aTilePixMap;
aTilePixMap.SetTopDown (theImage.IsTopDown());
Graphic3d_Vec2i anOffset (0, 0);
for (; anOffset.y() < aTargetSize.y(); anOffset.y() += aFBOVPSize.y())
{
anOffset.x() = 0;
for (; anOffset.x() < aTargetSize.x(); anOffset.x() += aFBOVPSize.x())
{
Graphic3d_CameraTile aTile;
aTile.Offset = anOffset;
aTile.TotalSize = aTargetSize;
aTile.TileSize = aFBOVPSize;
if (!aFBOPtr.IsNull())
{
// crop corners in case of FBO
// (no API to resize viewport of on-screen buffer - keep uncropped in this case)
aTile = aTile.Cropped();
}
if (aTile.TileSize.x() < 1
|| aTile.TileSize.y() < 1)
{
continue;
}
const Standard_Integer aLeft = aTile.Offset.x();
Standard_Integer aBottom = aTile.Offset.y();
if (theImage.IsTopDown())
{
const Standard_Integer aTop = aTile.Offset.y() + aTile.TileSize.y();
aBottom = aTargetSize.y() - aTop;
}
aTilePixMap.InitWrapper (theImage.Format(), theImage.ChangeData()
+ theImage.SizeRowBytes() * aBottom + theImage.SizePixelBytes() * aLeft,
aTile.TileSize.x(), aTile.TileSize.y(),
theImage.SizeRowBytes());
aCamera->SetTile (aTile);
if (!aFBOPtr.IsNull())
{
myView->FBOChangeViewport (aFBOPtr, aTile.TileSize.x(), aTile.TileSize.y());
}
Redraw();
isSuccess = isSuccess && myView->BufferDump (aTilePixMap, theParams.BufferType);
if (!isSuccess)
{
break;
}
}
if (!isSuccess)
{
break;
}
}
}
// restore state
myView->SetImmediateModeDrawToFront (aPrevImmediateMode);
aCamera->Copy (aStoreMapping);
if (aFBOPtr != aPrevFBOPtr)
{
myView->FBORelease (aFBOPtr);
}
else if (!aPrevFBOPtr.IsNull())
{
myView->FBOChangeViewport (aPrevFBOPtr, aPrevFBOVPSize.x(), aPrevFBOVPSize.y());
}
myView->SetFBO (aPrevFBOPtr);
return isSuccess;
}
//=============================================================================
//function : ImmediateUpdate
//purpose :
//=============================================================================
void V3d_View::ImmediateUpdate() const
{
if (myImmediateUpdate)
{
Update();
}
}
//=============================================================================
//function : SetImmediateUpdate
//purpose :
//=============================================================================
Standard_Boolean V3d_View::SetImmediateUpdate (const Standard_Boolean theImmediateUpdate)
{
Standard_Boolean aPreviousMode = myImmediateUpdate;
myImmediateUpdate = theImmediateUpdate;
return aPreviousMode;
}
// =======================================================================
// function : SetCamera
// purpose :
// =======================================================================
void V3d_View::SetCamera (const Handle(Graphic3d_Camera)& theCamera)
{
myView->SetCamera (theCamera);
ImmediateUpdate();
}
// =======================================================================
// function : GetCamera
// purpose :
// =======================================================================
const Handle(Graphic3d_Camera)& V3d_View::Camera() const
{
return myView->Camera();
}
// =======================================================================
// function : FitMinMax
// purpose : Internal
// =======================================================================
Standard_Boolean V3d_View::FitMinMax (const Handle(Graphic3d_Camera)& theCamera,
const Bnd_Box& theBox,
const Standard_Real theMargin,
const Standard_Real theResolution,
const Standard_Boolean theToEnlargeIfLine) const
{
// Check bounding box for validness
if (theBox.IsVoid())
{
return Standard_False; // bounding box is out of bounds...
}
// Apply "axial scaling" to the bounding points.
// It is not the best approach to make this scaling as a part of fit all operation,
// but the axial scale is integrated into camera orientation matrix and the other
// option is to perform frustum plane adjustment algorithm in view camera space,
// which will lead to a number of additional world-view space conversions and
// loosing precision as well.
gp_Pnt aBndMin = theBox.CornerMin().XYZ().Multiplied (theCamera->AxialScale());
gp_Pnt aBndMax = theBox.CornerMax().XYZ().Multiplied (theCamera->AxialScale());
if (aBndMax.IsEqual (aBndMin, RealEpsilon()))
{
return Standard_False; // nothing to fit all
}
// Prepare camera frustum planes.
NCollection_Array1<gp_Pln> aFrustumPlane (1, 6);
theCamera->Frustum (aFrustumPlane.ChangeValue (1),
aFrustumPlane.ChangeValue (2),
aFrustumPlane.ChangeValue (3),
aFrustumPlane.ChangeValue (4),
aFrustumPlane.ChangeValue (5),
aFrustumPlane.ChangeValue (6));
// Prepare camera up, side, direction vectors.
gp_Dir aCamUp = theCamera->OrthogonalizedUp();
gp_Dir aCamDir = theCamera->Direction();
gp_Dir aCamSide = aCamDir ^ aCamUp;
// Prepare scene bounding box parameters.
gp_Pnt aBndCenter = (aBndMin.XYZ() + aBndMax.XYZ()) / 2.0;
NCollection_Array1<gp_Pnt> aBndCorner (1, 8);
aBndCorner.ChangeValue (1) = gp_Pnt (aBndMin.X(), aBndMin.Y(), aBndMin.Z());
aBndCorner.ChangeValue (2) = gp_Pnt (aBndMin.X(), aBndMin.Y(), aBndMax.Z());
aBndCorner.ChangeValue (3) = gp_Pnt (aBndMin.X(), aBndMax.Y(), aBndMin.Z());
aBndCorner.ChangeValue (4) = gp_Pnt (aBndMin.X(), aBndMax.Y(), aBndMax.Z());
aBndCorner.ChangeValue (5) = gp_Pnt (aBndMax.X(), aBndMin.Y(), aBndMin.Z());
aBndCorner.ChangeValue (6) = gp_Pnt (aBndMax.X(), aBndMin.Y(), aBndMax.Z());
aBndCorner.ChangeValue (7) = gp_Pnt (aBndMax.X(), aBndMax.Y(), aBndMin.Z());
aBndCorner.ChangeValue (8) = gp_Pnt (aBndMax.X(), aBndMax.Y(), aBndMax.Z());
// Perspective-correct camera projection vector, matching the bounding box is determined geometrically.
// Knowing the initial shape of a frustum it is possible to match it to a bounding box.
// Then, knowing the relation of camera projection vector to the frustum shape it is possible to
// set up perspective-correct camera projection matching the bounding box.
// These steps support non-asymmetric transformations of view-projection space provided by camera.
// The zooming can be done by calculating view plane size matching the bounding box at center of
// the bounding box. The only limitation here is that the scale of camera should define size of
// its view plane passing through the camera center, and the center of camera should be on the
// same line with the center of bounding box.
// The following method is applied:
// 1) Determine normalized asymmetry of camera projection vector by frustum planes.
// 2) Determine new location of frustum planes, "matching" the bounding box.
// 3) Determine new camera projection vector using the normalized asymmetry.
// 4) Determine new zooming in view space.
// 1. Determine normalized projection asymmetry (if any).
Standard_Real anAssymX = Tan (( aCamSide).Angle (aFrustumPlane (1).Axis().Direction()))
- Tan ((-aCamSide).Angle (aFrustumPlane (2).Axis().Direction()));
Standard_Real anAssymY = Tan (( aCamUp) .Angle (aFrustumPlane (3).Axis().Direction()))
- Tan ((-aCamUp) .Angle (aFrustumPlane (4).Axis().Direction()));
// 2. Determine how far should be the frustum planes placed from center
// of bounding box, in order to match the bounding box closely.
NCollection_Array1<Standard_Real> aFitDistance (1, 6);
aFitDistance.ChangeValue (1) = 0.0;
aFitDistance.ChangeValue (2) = 0.0;
aFitDistance.ChangeValue (3) = 0.0;
aFitDistance.ChangeValue (4) = 0.0;
aFitDistance.ChangeValue (5) = 0.0;
aFitDistance.ChangeValue (6) = 0.0;
for (Standard_Integer anI = aFrustumPlane.Lower(); anI <= aFrustumPlane.Upper(); ++anI)
{
// Measure distances from center of bounding box to its corners towards the frustum plane.
const gp_Dir& aPlaneN = aFrustumPlane.ChangeValue (anI).Axis().Direction();
Standard_Real& aFitDist = aFitDistance.ChangeValue (anI);
for (Standard_Integer aJ = aBndCorner.Lower(); aJ <= aBndCorner.Upper(); ++aJ)
{
aFitDist = Max (aFitDist, gp_Vec (aBndCenter, aBndCorner (aJ)).Dot (aPlaneN));
}
}
// The center of camera is placed on the same line with center of bounding box.
// The view plane section crosses the bounding box at its center.
// To compute view plane size, evaluate coefficients converting "point -> plane distance"
// into view section size between the point and the frustum plane.
// proj
// /|\ right half of frame //
// | //
// point o<-- distance * coeff -->//---- (view plane section)
// \ //
// (distance) //
// ~ //
// (distance) //
// \/\//
// \//
// //
// (frustum plane)
aFitDistance.ChangeValue (1) *= Sqrt(1 + Pow (Tan ( aCamSide .Angle (aFrustumPlane (1).Axis().Direction())), 2.0));
aFitDistance.ChangeValue (2) *= Sqrt(1 + Pow (Tan ((-aCamSide).Angle (aFrustumPlane (2).Axis().Direction())), 2.0));
aFitDistance.ChangeValue (3) *= Sqrt(1 + Pow (Tan ( aCamUp .Angle (aFrustumPlane (3).Axis().Direction())), 2.0));
aFitDistance.ChangeValue (4) *= Sqrt(1 + Pow (Tan ((-aCamUp) .Angle (aFrustumPlane (4).Axis().Direction())), 2.0));
aFitDistance.ChangeValue (5) *= Sqrt(1 + Pow (Tan ( aCamDir .Angle (aFrustumPlane (5).Axis().Direction())), 2.0));
aFitDistance.ChangeValue (6) *= Sqrt(1 + Pow (Tan ((-aCamDir) .Angle (aFrustumPlane (6).Axis().Direction())), 2.0));
Standard_Real aViewSizeXv = aFitDistance (1) + aFitDistance (2);
Standard_Real aViewSizeYv = aFitDistance (3) + aFitDistance (4);
Standard_Real aViewSizeZv = aFitDistance (5) + aFitDistance (6);
// 3. Place center of camera on the same line with center of bounding
// box applying corresponding projection asymmetry (if any).
Standard_Real anAssymXv = anAssymX * aViewSizeXv * 0.5;
Standard_Real anAssymYv = anAssymY * aViewSizeYv * 0.5;
Standard_Real anOffsetXv = (aFitDistance (2) - aFitDistance (1)) * 0.5 + anAssymXv;
Standard_Real anOffsetYv = (aFitDistance (4) - aFitDistance (3)) * 0.5 + anAssymYv;
gp_Vec aTranslateSide = gp_Vec (aCamSide) * anOffsetXv;
gp_Vec aTranslateUp = gp_Vec (aCamUp) * anOffsetYv;
gp_Pnt aCamNewCenter = aBndCenter.Translated (aTranslateSide).Translated (aTranslateUp);
gp_Trsf aCenterTrsf;
aCenterTrsf.SetTranslation (theCamera->Center(), aCamNewCenter);
theCamera->Transform (aCenterTrsf);
theCamera->SetDistance (aFitDistance (6) + aFitDistance (5));
// Bounding box collapses to a point or thin line going in depth of the screen
if (aViewSizeXv < theResolution && aViewSizeYv < theResolution)
{
if (aViewSizeXv < theResolution || !theToEnlargeIfLine)
{
return Standard_True; // This is just one point or line and zooming has no effect.
}
// Looking along line and "theToEnlargeIfLine" is requested.
// Fit view to see whole scene on rotation.
aViewSizeXv = aViewSizeZv;
aViewSizeYv = aViewSizeZv;
}
Scale (theCamera, aViewSizeXv, aViewSizeYv);
const Standard_Real aZoomCoef = myView->ConsiderZoomPersistenceObjects();
Scale (theCamera, theCamera->ViewDimensions().X() * (aZoomCoef + theMargin), theCamera->ViewDimensions().Y() * (aZoomCoef + theMargin));
return Standard_True;
}
// =======================================================================
// function : Scale
// purpose : Internal
// =======================================================================
void V3d_View::Scale (const Handle(Graphic3d_Camera)& theCamera,
const Standard_Real theSizeXv,
const Standard_Real theSizeYv) const
{
Standard_Real anAspect = theCamera->Aspect();
if (anAspect > 1.0)
{
theCamera->SetScale (Max (theSizeXv / anAspect, theSizeYv));
}
else
{
theCamera->SetScale (Max (theSizeXv, theSizeYv * anAspect));
}
}
// =======================================================================
// function : Translate
// purpose : Internal
// =======================================================================
void V3d_View::Translate (const Handle(Graphic3d_Camera)& theCamera,
const Standard_Real theDXv,
const Standard_Real theDYv) const
{
const gp_Pnt& aCenter = theCamera->Center();
const gp_Dir& aDir = theCamera->Direction();
const gp_Dir& anUp = theCamera->Up();
gp_Ax3 aCameraCS (aCenter, aDir.Reversed(), aDir ^ anUp);
gp_Vec aCameraPanXv = gp_Vec (aCameraCS.XDirection()) * theDXv;
gp_Vec aCameraPanYv = gp_Vec (aCameraCS.YDirection()) * theDYv;
gp_Vec aCameraPan = aCameraPanXv + aCameraPanYv;
gp_Trsf aPanTrsf;
aPanTrsf.SetTranslation (aCameraPan);
theCamera->Transform (aPanTrsf);
}
// =======================================================================
// function : IsCullingEnabled
// purpose :
// =======================================================================
Standard_Boolean V3d_View::IsCullingEnabled() const
{
return myView->IsCullingEnabled();
}
// =======================================================================
// function : SetFrustumCulling
// purpose :
// =======================================================================
void V3d_View::SetFrustumCulling (const Standard_Boolean theToClip)
{
myView->SetCullingEnabled (theToClip);
}
// =======================================================================
// function : DiagnosticInformation
// purpose :
// =======================================================================
void V3d_View::DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
Graphic3d_DiagnosticInfo theFlags) const
{
myView->DiagnosticInformation (theDict, theFlags);
}
//=============================================================================
//function : RenderingParams
//purpose :
//=============================================================================
const Graphic3d_RenderingParams& V3d_View::RenderingParams() const
{
return myView->RenderingParams();
}
//=============================================================================
//function : ChangeRenderingParams
//purpose :
//=============================================================================
Graphic3d_RenderingParams& V3d_View::ChangeRenderingParams()
{
return myView->ChangeRenderingParams();
}
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