OpenCascade/occt
1
0
Fork 0
mirror of https://git.dev.opencascade.org/repos/occt.git synced 2025-06-20 11:54:07 +03:00
Code
occt/src/V3d/V3d_PositionLight.cxx
abv 92efcf78a6 0026936: Drawbacks of inlining in new type system in OCCT 7.0 -- automatic 
Automatic restore of IMPLEMENT_STANDARD_RTTIEXT macro (upgrade -rtti)
2015-12-04 14:15:06 +03:00

473 lines
16 KiB
C++
Raw Blame History

// 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.
/***********************************************************************
V3d_PositionLight.cxx
Created: 30-03-98 ZOV (ZELENKOV Oleg)
************************************************************************/
#include <gp_Ax1.hxx>
#include <gp_Dir.hxx>
#include <gp_Pnt.hxx>
#include <gp_Trsf.hxx>
#include <gp_Vec.hxx>
#include <Graphic3d_ArrayOfSegments.hxx>
#include <Graphic3d_AspectLine3d.hxx>
#include <Graphic3d_AspectMarker3d.hxx>
#include <Graphic3d_AspectText3d.hxx>
#include <Graphic3d_Group.hxx>
#include <Graphic3d_Structure.hxx>
#include <Graphic3d_Vector.hxx>
#include <Graphic3d_Vertex.hxx>
#include <Standard_Type.hxx>
#include <TCollection_AsciiString.hxx>
#include <V3d.hxx>
#include <V3d_BadValue.hxx>
#include <V3d_PositionLight.hxx>
#include <V3d_SpotLight.hxx>
#include <V3d_View.hxx>
#include <V3d_Viewer.hxx>
IMPLEMENT_STANDARD_RTTIEXT(V3d_PositionLight,V3d_Light)
// =======================================================================
// function : V3d_PositionLight
// purpose :
// =======================================================================
V3d_PositionLight::V3d_PositionLight (const Handle(V3d_Viewer)& theViewer)
: V3d_Light(theViewer)
{
}
// =======================================================================
// function : SetTarget
// purpose :
// =======================================================================
void V3d_PositionLight::SetTarget (const Standard_Real theX, const Standard_Real theY, const Standard_Real theZ)
{
Standard_Real Xc,Yc,Zc, Xp,Yp,Zp;
// Recalculation of the position
myTarget.Coord(Xc,Yc,Zc);
Position (Xp,Yp,Zp) ;
Xp = Xp + (theX - Xc);
Yp = Yp + (theY - Yc);
Zp = Zp + (theZ - Zc);
// Affectation
myTarget.SetCoord(theX,theY,theZ);
SetPosition(Xp,Yp,Zp) ;
}
// =======================================================================
// function : SetRadius
// purpose :
// =======================================================================
void V3d_PositionLight::SetRadius (const Standard_Real theRadius)
{
V3d_BadValue_Raise_if( theRadius <= 0. , "V3d_PositionLight::SetRadius, bad radius");
V3d_BadValue_Raise_if( Type() == V3d_DIRECTIONAL , "V3d_PositionLight::SetRadius, bad light type");
Standard_Real X0,Y0,Z0, Xn,Yn,Zn, Xp,Yp,Zp;
// The target point remains unchanged, only the position of the light is modified
// by preserving the direction.
Position (Xp,Yp,Zp);
Graphic3d_Vector D(myTarget, Graphic3d_Vertex(Xp, Yp, Zp));
D.Normalize();
D.Coord(Xn,Yn,Zn);
myTarget.Coord(X0,Y0,Z0);
Xn = X0 + theRadius*Xn;
Yn = Y0 + theRadius*Yn;
Zn = Z0 + theRadius*Zn;
SetPosition(Xn,Yn,Zn) ;
}
// =======================================================================
// function : OnHideFace
// purpose :
// =======================================================================
void V3d_PositionLight::OnHideFace (const Handle(V3d_View)& theView)
{
Standard_Real Xp,Yp,Zp, X,Y,Z, VX,VY,VZ;
Position (Xp,Yp,Zp);
V3d_Light::SymetricPointOnSphere (theView,
myTarget, Graphic3d_Vertex(Xp,Yp,Yp), Radius(), X,Y,Z, VX,VY,VZ);
// This is a visible point
if ((VX*(X-Xp) < 0.) && (VY*(Y-Yp) < 0.) && (VZ*(Z-Zp) < 0.))
SetPosition (X,Y,Z);
}
// =======================================================================
// function : OnSeeFace
// purpose :
// =======================================================================
void V3d_PositionLight::OnSeeFace (const Handle(V3d_View)& theView)
{
Standard_Real Xp,Yp,Zp, X,Y,Z, VX,VY,VZ;
Position (Xp,Yp,Zp);
V3d_Light::SymetricPointOnSphere (theView,
myTarget, Graphic3d_Vertex(Xp,Yp,Yp), Radius(), X,Y,Z, VX,VY,VZ);
// This is a hidden point
if ((VX*(X-Xp) > 0.) && (VY*(Y-Yp) > 0.) && (VZ*(Z-Zp) > 0.))
SetPosition (X,Y,Z);
}
// =======================================================================
// function : SeeOrHide
// purpose :
// =======================================================================
Standard_Boolean V3d_PositionLight::SeeOrHide (const Handle(V3d_View)& theView) const
{
Standard_Real Xp,Yp,Zp, X,Y,Z, VX,VY,VZ;
Position (Xp,Yp,Zp);
V3d_Light::SymetricPointOnSphere (theView,
myTarget, Graphic3d_Vertex(Xp,Yp,Yp), Radius(), X,Y,Z, VX,VY,VZ);
// Is it a visible or a hidden point
return ( (VX*(X-Xp) > 0.) || (VY*(Y-Yp) > 0.) || (VZ*(Z-Zp) > 0.) )?
// the source is on the hidden face
Standard_False:
// the source is on the visible face.
Standard_True;
}
// =======================================================================
// function : Target
// purpose :
// =======================================================================
void V3d_PositionLight::Target (Standard_Real& theXp, Standard_Real& theYp, Standard_Real& theZp) const
{
myTarget.Coord (theXp, theYp, theZp);
}
// =======================================================================
// function : Display
// purpose :
// =======================================================================
void V3d_PositionLight::Display (const Handle(V3d_View)& theView, const V3d_TypeOfRepresentation theTPres)
{
Graphic3d_Vertex PText ;
Standard_Real X,Y,Z,Rayon;
Standard_Real X0,Y0,Z0,VX,VY,VZ;
Standard_Real X1,Y1,Z1;
Standard_Real DXRef,DYRef,DZRef,DXini,DYini,DZini;
Standard_Real R1,G1,B1;
V3d_TypeOfRepresentation Pres;
V3d_TypeOfUpdate UpdSov;
// Creation of a structure of markable elements (position of the
// light, and the domain of lighting represented by a circle)
// Creation of a structure snopick of non-markable elements (target, meridian and
// parallel).
Pres = theTPres;
Handle(V3d_Viewer) TheViewer = theView->Viewer();
UpdSov = TheViewer->UpdateMode();
TheViewer->SetUpdateMode(V3d_WAIT);
if (!myGraphicStructure.IsNull()) {
myGraphicStructure->Disconnect(myGraphicStructure1);
myGraphicStructure->Clear();
myGraphicStructure1->Clear();
if (Pres == V3d_SAMELAST) Pres = myTypeOfRepresentation;
}
else {
if (Pres == V3d_SAMELAST) Pres = V3d_SIMPLE;
Handle(Graphic3d_Structure) slight = new Graphic3d_Structure(TheViewer->StructureManager());
myGraphicStructure = slight;
Handle(Graphic3d_Structure) snopick = new Graphic3d_Structure(TheViewer->StructureManager());
myGraphicStructure1 = snopick;
}
Handle(Graphic3d_Group) gradius, gExtArrow, gIntArrow;
if (Type() != V3d_DIRECTIONAL
&& Pres == V3d_COMPLETE)
{
gradius = myGraphicStructure->NewGroup();
gExtArrow = myGraphicStructure->NewGroup();
gIntArrow = myGraphicStructure->NewGroup();
}
Handle(Graphic3d_Group) glight = myGraphicStructure->NewGroup();
Handle(Graphic3d_Group) gsphere;
if (Pres == V3d_COMPLETE
|| Pres == V3d_PARTIAL)
{
gsphere = myGraphicStructure->NewGroup();
}
Handle(Graphic3d_Group) gnopick = myGraphicStructure1->NewGroup();
X0 = myTarget.X();
Y0 = myTarget.Y();
Z0 = myTarget.Z();
// Display of the light position.
this->Color(Quantity_TOC_RGB,R1,G1,B1);
Quantity_Color Col1(R1,G1,B1,Quantity_TOC_RGB);
Handle(Graphic3d_AspectLine3d) Asp1 = new Graphic3d_AspectLine3d();
Asp1->SetColor(Col1);
glight->SetPrimitivesAspect(Asp1);
this->Symbol(glight,theView);
// Display of the marking sphere (limit at the circle).
if (Pres == V3d_COMPLETE || Pres == V3d_PARTIAL) {
Rayon = this->Radius();
theView->Proj(VX,VY,VZ);
V3d::CircleInPlane(gsphere,X0,Y0,Z0,VX,VY,VZ,Rayon);
if (Type() != V3d_DIRECTIONAL) {
//Display of the radius of the sphere (line + text)
if (Pres == V3d_COMPLETE) {
this->Position(X,Y,Z);
Handle(Graphic3d_ArrayOfSegments) aPrims = new Graphic3d_ArrayOfSegments(2);
aPrims->AddVertex(X0,Y0,Z0);
aPrims->AddVertex(X,Y,Z);
gnopick->AddPrimitiveArray(aPrims);
V3d::ArrowOfRadius(gExtArrow,X-.1*(X-X0),Y-.1*(Y-Y0),Z-.1*(Z-Z0),X-X0,Y-Y0,Z-Z0,M_PI/15.,Rayon/20.);
V3d::ArrowOfRadius(gIntArrow,X0,Y0,Z0,X0-X,Y0-Y,Z0-Z,M_PI/15.,Rayon/20.);
TCollection_AsciiString ValOfRadius(Rayon);
PText.SetCoord( .5*(X0+X), .5*(Y0+Y), .5*(Z0+Z) );
gradius->Text(ValOfRadius.ToCString(),PText,0.01);
}
}
// Display of the meridian
Quantity_Color Col2(Quantity_NOC_GREEN);
Handle(Graphic3d_AspectLine3d) Asp2 = new Graphic3d_AspectLine3d(Col2,Aspect_TOL_SOLID,1.);
gnopick->SetPrimitivesAspect(Asp2);
// Definition of the axis of circle
theView->Up(DXRef,DYRef,DZRef);
this->Position(X,Y,Z);
DXini = X-X0; DYini = Y-Y0; DZini = Z-Z0;
VX = DYRef*DZini - DZRef*DYini;
VY = DZRef*DXini - DXRef*DZini;
VZ = DXRef*DYini - DYRef*DXini;
V3d::CircleInPlane(gnopick,X0,Y0,Z0,VX,VY,VZ,Rayon);
// Display of the parallel
// Definition of the axis of circle
theView->Proj(VX,VY,VZ);
theView->Up(X1,Y1,Z1);
DXRef = VY * Z1 - VZ * Y1;
DYRef = VZ * X1 - VX * Z1;
DZRef = VX * Y1 - VY * X1;
this->Position(X,Y,Z);
DXini = X-X0; DYini = Y-Y0; DZini = Z-Z0;
VX = DYRef*DZini - DZRef*DYini;
VY = DZRef*DXini - DXRef*DZini;
VZ = DXRef*DYini - DYRef*DXini;
V3d::CircleInPlane(gnopick,X0,Y0,Z0,VX,VY,VZ,Rayon);
}
myGraphicStructure->Connect(myGraphicStructure1,Graphic3d_TOC_DESCENDANT);
myTypeOfRepresentation = Pres;
myGraphicStructure->Display();
TheViewer->SetUpdateMode(UpdSov);
}
// =======================================================================
// function : Display
// purpose :
// =======================================================================
void V3d_PositionLight::Tracking (const Handle(V3d_View)& theView,
const V3d_TypeOfPickLight theWhatPick,
const Standard_Integer theXpix,
const Standard_Integer theYpix)
{
// Quantity_Color Col ;
Standard_Real xPos, yPos, zPos;
Standard_Real XPp,YPp,PXT,PYT,X,Y,Z,Rayon,Ylim;
Standard_Real XMinTrack,XMaxTrack,YMinTrack,YMaxTrack;
Standard_Real XT,YT,ZT,X0,Y0,Z0,XP,YP,ZP,VX,VY,VZ,A,B,C,Delta;
Standard_Real DX,DY,PXP,PYP,Xproj,Yproj;
Standard_Real A1,A2,B1,B2,Rap,OldRprj,NewRprj;
Standard_Real Xi,Yi,Zi,DeltaX,DeltaY,DeltaZ,Lambda;
Standard_Integer IPX,IPY;
theView->Convert(theXpix,theYpix,XPp,YPp);
X0 = myTarget.X();
Y0 = myTarget.Y();
Z0 = myTarget.Z();
theView->Project(X0,Y0,Z0,PXT,PYT);
theView->Convert(PXT,PYT,IPX,IPY);
// Coord 3d in the plane of projection of the target.
theView->Convert(IPX,IPY,XT,YT,ZT);
switch (theWhatPick) {
case V3d_POSITIONLIGHT :
// The Coordinates should remain inside of the sphere
Rayon = Radius();
XMinTrack = PXT - Rayon;
XMaxTrack = PXT + Rayon;
Ylim = Sqrt( Square(Rayon) - Square(XPp - PXT) );
YMinTrack = PYT - Ylim;
YMaxTrack = PYT + Ylim;
if (XPp >= XMinTrack && XPp <= XMaxTrack) {
if (YPp >= YMinTrack && YPp <= YMaxTrack) {
theView->ProjReferenceAxe(theXpix,theYpix,XP,YP,ZP,VX,VY,VZ);
DeltaX = X0 - XP;
DeltaY = Y0 - YP;
DeltaZ = Z0 - ZP;
// The point of intersection of straight lines defined by :
// - Straight line passing by the point of projection and the eye
// if this is a perspective, parralel to the normal of the view
// if this is an axonometric view.
// position in the view is parallel to the normal of the view
// - The distance position of the target camera is equal to the radius.
A = VX*VX + VY*VY + VZ*VZ ;
B = -2. * (VX*DeltaX + VY*DeltaY + VZ*DeltaZ);
C = DeltaX*DeltaX + DeltaY*DeltaY + DeltaZ*DeltaZ
- Rayon*Rayon ;
Delta = B*B - 4.*A*C;
if ( Delta >= 0 ) {
Lambda = (-B + Sqrt(Delta))/(2.*A);
X = XP + Lambda*VX;
Y = YP + Lambda*VY;
Z = ZP + Lambda*VZ;
SetPosition(X,Y,Z);
if (Type() == V3d_SPOT)
((V3d_SpotLight*)this)->SetDirection(X0-X,Y0-Y,Z0-Z);
Display(theView,myTypeOfRepresentation);
(theView->Viewer())->UpdateLights();
}
}
}
break;
case V3d_SPACELIGHT :
theView->Convert(PXT,PYT,IPX,IPY);
// In this case Xpix,Ypix correspond to a distance, relative
// to the translation that is planned to be performed on the sphere.
theView->Convert(IPX+theXpix,IPY+theYpix,X,Y,Z);
X = X+X0-XT;
Y = Y+Y0-YT;
Z = Z+Z0-ZT;
SetTarget(X,Y,Z);
Display(theView,myTypeOfRepresentation);
(theView->Viewer())->UpdateLights();
break;
case V3d_ExtRADIUSLIGHT :
if (Type() == V3d_DIRECTIONAL)
break;
// it is attempted to preserve the target direction position of the
// source ==> the point is projected on the target source direction.
this->Position(Xi,Yi,Zi);
theView->Project(Xi,Yi,Zi,PXP,PYP);
DX = PXP - PXT;
DY = PYP - PYT;
A1 = DY/DX ; B1 = PYT - A1*PXT;
A2 = -DX/DY; B2 = YPp - A2*XPp;
Xproj = (B2 - B1) / (A1 - A2);
Yproj = A1*Xproj + B1;
if ( (DX*(Xproj-PXT) > 0.) && (DY*(Yproj-PYT) > 0.) ) {
OldRprj = Sqrt ( Square (PXP-PXT) + Square (PYP-PYT) );
NewRprj = Sqrt ( Square (Xproj-PXT) + Square (Yproj-PYT) );
Rap = NewRprj/OldRprj;
Rayon = Radius();
Rayon = Rayon * Rap;
SetRadius(Rayon);
Display(theView,myTypeOfRepresentation);
(theView->Viewer())->UpdateLights();
}
break;
case V3d_IntRADIUSLIGHT :
if (Type() == V3d_DIRECTIONAL)
break;
// it is attempted to preserve the target direction position of the
// source ==> the point is projected on the target source direction.
Position(Xi,Yi,Zi);
theView->Project(Xi,Yi,Zi,PXP,PYP);
DX = PXP - PXT;
DY = PYP - PYT;
A1 = DY/DX ; B1 = PYT - A1*PXT;
A2 = -DX/DY; B2 = YPp - A2*XPp;
Xproj = (B2 - B1) / (A1 - A2);
Yproj = A1*Xproj + B1;
if ( (DX*(Xproj-PXP) < 0.) && (DY*(Yproj-PYP) < 0.) ) {
OldRprj = Sqrt ( Square (PXP-PXT) + Square (PYP-PYT) );
NewRprj = Sqrt ( Square (Xproj-PXP) + Square (Yproj-PYP) );
Rap = NewRprj/OldRprj;
Rayon = Radius();
Rayon = Rayon * Rap;
// the source should remain at a fixed position,
// only the target is modified.
Position (xPos, yPos, zPos);
Graphic3d_Vector Dir(Graphic3d_Vertex(xPos,yPos,zPos), myTarget);
Dir.Normalize();
Dir.Coord(X,Y,Z);
X = Xi + Rayon*X;
Y = Yi + Rayon*Y;
Z = Zi + Rayon*Z;
// the source should remain at a fixed position,
// only the target is modified.
myTarget.SetCoord(X,Y,Z);
Display(theView,myTypeOfRepresentation);
(theView->Viewer())->UpdateLights();
}
break;
case V3d_RADIUSTEXTLIGHT :
break;
case V3d_NOTHING :
break;
}
}
// =======================================================================
// function : Radius
// purpose :
// =======================================================================
Standard_Real V3d_PositionLight::Radius() const
{
Standard_Real Xp,Yp,Zp, Xc,Yc,Zc;
Position (Xp,Yp,Zp);
myTarget.Coord(Xc,Yc,Zc);
return Sqrt (Square(Xc - Xp) + Square(Yc - Yp) + Square(Zc - Zp));
}
// =======================================================================
// function : Radius
// purpose :
// =======================================================================
void V3d_PositionLight::Erase()
{
if (!myGraphicStructure.IsNull()) myGraphicStructure->Erase();
if (!myGraphicStructure1.IsNull()) myGraphicStructure1->Erase();
}
View Git Blame Copy Permalink