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0029290: Visualization, TKOpenGl - allow defining Light source per ZLayer
Graphic3d_CLight is now defined as a class inheriting Standard_Transient, so that it's fields now should be accessed through methods. Graphic3d_CLight::IsEnabled() - new property allowing to disable light source everywhere. Confusing alias OpenGl_Light has been removed. Graphic3d_CLight::SetAttenuation() - the upper limit 1.0 of attenuation factors has been removed since it contradicts to OpenGL specs and does not make sense. Graphic3d_ZLayerSettings::Lights() - light sources list is now property of ZLayer. When defined, it overrides light sources defined for View/Viewer. New class Graphic3d_LightSet has been defined to define a set of light sources. V3d_Light - removed obsolete interface for debug drawing lights sources. V3d_Light is now an alias to Graphic3d_CLight. V3d_TypeOfLight is now defined as a typedef to Graphic3d_TypeOfLightSource.
This commit is contained in:
kgv
@@ -13,424 +13,20 @@
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#include <V3d_PositionLight.hxx>
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#include <gp_Dir.hxx>
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#include <gp_Vec.hxx>
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#include <Graphic3d_ArrayOfSegments.hxx>
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#include <Graphic3d_AspectLine3d.hxx>
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#include <Graphic3d_Group.hxx>
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#include <Graphic3d_Structure.hxx>
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#include <TCollection_AsciiString.hxx>
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#include <V3d.hxx>
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#include <V3d_BadValue.hxx>
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#include <V3d_SpotLight.hxx>
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#include <V3d_View.hxx>
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#include <V3d_Viewer.hxx>
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IMPLEMENT_STANDARD_RTTIEXT(V3d_PositionLight,V3d_Light)
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IMPLEMENT_STANDARD_RTTIEXT(V3d_PositionLight, Graphic3d_CLight)
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// =======================================================================
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// function : V3d_PositionLight
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// purpose :
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// =======================================================================
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V3d_PositionLight::V3d_PositionLight (const Handle(V3d_Viewer)& theViewer)
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: V3d_Light(theViewer)
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V3d_PositionLight::V3d_PositionLight (Graphic3d_TypeOfLightSource theType,
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const Handle(V3d_Viewer)& theViewer)
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: Graphic3d_CLight (theType)
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{
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}
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// =======================================================================
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// function : SetTarget
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// purpose :
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// =======================================================================
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void V3d_PositionLight::SetTarget (const Standard_Real theX, const Standard_Real theY, const Standard_Real theZ)
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{
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Standard_Real Xc,Yc,Zc, Xp,Yp,Zp;
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// Recalculation of the position
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myTarget.Coord(Xc,Yc,Zc);
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Position (Xp,Yp,Zp) ;
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Xp = Xp + (theX - Xc);
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Yp = Yp + (theY - Yc);
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Zp = Zp + (theZ - Zc);
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// Affectation
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myTarget.SetCoord(theX,theY,theZ);
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SetPosition(Xp,Yp,Zp) ;
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}
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// =======================================================================
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// function : SetRadius
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// purpose :
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// =======================================================================
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void V3d_PositionLight::SetRadius (const Standard_Real theRadius)
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{
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V3d_BadValue_Raise_if( theRadius <= 0. , "V3d_PositionLight::SetRadius, bad radius");
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V3d_BadValue_Raise_if( Type() == V3d_DIRECTIONAL , "V3d_PositionLight::SetRadius, bad light type");
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// The target point remains unchanged, only the position of the light is modified by preserving the direction
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gp_XYZ aPosOld;
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Position (aPosOld.ChangeCoord (1), aPosOld.ChangeCoord (2), aPosOld.ChangeCoord (3));
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gp_XYZ aDir = aPosOld - myTarget.XYZ();
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aDir.Normalize();
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const gp_XYZ aPosNew = myTarget.XYZ() + aDir * theRadius;
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SetPosition (aPosNew.X(), aPosNew.Y(), aPosNew.Z());
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}
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// =======================================================================
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// function : OnHideFace
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// purpose :
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// =======================================================================
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void V3d_PositionLight::OnHideFace (const Handle(V3d_View)& theView)
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{
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Standard_Real Xp,Yp,Zp, X,Y,Z, VX,VY,VZ;
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Position (Xp,Yp,Zp);
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V3d_Light::SymetricPointOnSphere (theView, myTarget, gp_Pnt(Xp,Yp,Yp), Radius(), X,Y,Z, VX,VY,VZ);
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// This is a visible point
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if ((VX*(X-Xp) < 0.) && (VY*(Y-Yp) < 0.) && (VZ*(Z-Zp) < 0.))
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SetPosition (X,Y,Z);
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}
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// =======================================================================
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// function : OnSeeFace
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// purpose :
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// =======================================================================
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void V3d_PositionLight::OnSeeFace (const Handle(V3d_View)& theView)
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{
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Standard_Real Xp,Yp,Zp, X,Y,Z, VX,VY,VZ;
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Position (Xp,Yp,Zp);
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V3d_Light::SymetricPointOnSphere (theView, myTarget, gp_Pnt(Xp,Yp,Yp), Radius(), X,Y,Z, VX,VY,VZ);
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// This is a hidden point
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if ((VX*(X-Xp) > 0.) && (VY*(Y-Yp) > 0.) && (VZ*(Z-Zp) > 0.))
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SetPosition (X,Y,Z);
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}
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// =======================================================================
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// function : SeeOrHide
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// purpose :
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// =======================================================================
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Standard_Boolean V3d_PositionLight::SeeOrHide (const Handle(V3d_View)& theView) const
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{
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Standard_Real Xp,Yp,Zp, X,Y,Z, VX,VY,VZ;
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Position (Xp,Yp,Zp);
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V3d_Light::SymetricPointOnSphere (theView, myTarget, gp_Pnt(Xp,Yp,Yp), Radius(), X,Y,Z, VX,VY,VZ);
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// Is it a visible or a hidden point
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return ( (VX*(X-Xp) > 0.) || (VY*(Y-Yp) > 0.) || (VZ*(Z-Zp) > 0.) )?
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// the source is on the hidden face
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Standard_False:
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// the source is on the visible face.
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Standard_True;
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}
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// =======================================================================
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// function : Display
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// purpose :
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// =======================================================================
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void V3d_PositionLight::Display (const Handle(V3d_View)& theView, const V3d_TypeOfRepresentation theTPres)
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{
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Graphic3d_Vertex PText ;
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Standard_Real X,Y,Z,Rayon;
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Standard_Real X0,Y0,Z0,VX,VY,VZ;
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Standard_Real X1,Y1,Z1;
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Standard_Real DXRef,DYRef,DZRef,DXini,DYini,DZini;
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V3d_TypeOfRepresentation Pres;
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// Creation of a structure of markable elements (position of the
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// light, and the domain of lighting represented by a circle)
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// Creation of a structure snopick of non-markable elements (target, meridian and
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// parallel).
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Pres = theTPres;
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Handle(V3d_Viewer) TheViewer = theView->Viewer();
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if (!myGraphicStructure.IsNull()) {
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myGraphicStructure->Disconnect(myGraphicStructure1);
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myGraphicStructure->Clear();
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myGraphicStructure1->Clear();
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if (Pres == V3d_SAMELAST) Pres = myTypeOfRepresentation;
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}
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else {
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if (Pres == V3d_SAMELAST) Pres = V3d_SIMPLE;
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Handle(Graphic3d_Structure) slight = new Graphic3d_Structure(TheViewer->StructureManager());
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myGraphicStructure = slight;
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Handle(Graphic3d_Structure) snopick = new Graphic3d_Structure(TheViewer->StructureManager());
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myGraphicStructure1 = snopick;
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}
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Handle(Graphic3d_Group) gradius, gExtArrow, gIntArrow;
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if (Type() != V3d_DIRECTIONAL
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&& Pres == V3d_COMPLETE)
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if (!theViewer.IsNull())
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{
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gradius = myGraphicStructure->NewGroup();
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gExtArrow = myGraphicStructure->NewGroup();
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gIntArrow = myGraphicStructure->NewGroup();
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}
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Handle(Graphic3d_Group) glight = myGraphicStructure->NewGroup();
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Handle(Graphic3d_Group) gsphere;
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if (Pres == V3d_COMPLETE
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|| Pres == V3d_PARTIAL)
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{
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gsphere = myGraphicStructure->NewGroup();
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}
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Handle(Graphic3d_Group) gnopick = myGraphicStructure1->NewGroup();
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X0 = myTarget.X();
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Y0 = myTarget.Y();
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Z0 = myTarget.Z();
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// Display of the light position.
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const Quantity_Color Col1 = this->Color();
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Handle(Graphic3d_AspectLine3d) Asp1 = new Graphic3d_AspectLine3d();
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Asp1->SetColor(Col1);
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glight->SetPrimitivesAspect(Asp1);
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this->Symbol(glight,theView);
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// Display of the marking sphere (limit at the circle).
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if (Pres == V3d_COMPLETE || Pres == V3d_PARTIAL) {
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Rayon = this->Radius();
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theView->Proj(VX,VY,VZ);
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V3d::CircleInPlane(gsphere,X0,Y0,Z0,VX,VY,VZ,Rayon);
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if (Type() != V3d_DIRECTIONAL) {
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//Display of the radius of the sphere (line + text)
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if (Pres == V3d_COMPLETE) {
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this->Position(X,Y,Z);
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Handle(Graphic3d_ArrayOfSegments) aPrims = new Graphic3d_ArrayOfSegments(2);
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aPrims->AddVertex(X0,Y0,Z0);
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aPrims->AddVertex(X,Y,Z);
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gnopick->AddPrimitiveArray(aPrims);
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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.);
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V3d::ArrowOfRadius(gIntArrow,X0,Y0,Z0,X0-X,Y0-Y,Z0-Z,M_PI/15.,Rayon/20.);
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TCollection_AsciiString ValOfRadius(Rayon);
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PText.SetCoord( .5*(X0+X), .5*(Y0+Y), .5*(Z0+Z) );
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gradius->Text(ValOfRadius.ToCString(),PText,0.01);
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}
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}
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// Display of the meridian
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Quantity_Color Col2(Quantity_NOC_GREEN);
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Handle(Graphic3d_AspectLine3d) Asp2 = new Graphic3d_AspectLine3d(Col2,Aspect_TOL_SOLID,1.);
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gnopick->SetPrimitivesAspect(Asp2);
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// Definition of the axis of circle
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theView->Up(DXRef,DYRef,DZRef);
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this->Position(X,Y,Z);
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DXini = X-X0; DYini = Y-Y0; DZini = Z-Z0;
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VX = DYRef*DZini - DZRef*DYini;
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VY = DZRef*DXini - DXRef*DZini;
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VZ = DXRef*DYini - DYRef*DXini;
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V3d::CircleInPlane(gnopick,X0,Y0,Z0,VX,VY,VZ,Rayon);
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// Display of the parallel
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// Definition of the axis of circle
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theView->Proj(VX,VY,VZ);
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theView->Up(X1,Y1,Z1);
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DXRef = VY * Z1 - VZ * Y1;
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DYRef = VZ * X1 - VX * Z1;
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DZRef = VX * Y1 - VY * X1;
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this->Position(X,Y,Z);
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DXini = X-X0; DYini = Y-Y0; DZini = Z-Z0;
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VX = DYRef*DZini - DZRef*DYini;
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VY = DZRef*DXini - DXRef*DZini;
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VZ = DXRef*DYini - DYRef*DXini;
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V3d::CircleInPlane(gnopick,X0,Y0,Z0,VX,VY,VZ,Rayon);
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}
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myGraphicStructure->Connect(myGraphicStructure1,Graphic3d_TOC_DESCENDANT);
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myTypeOfRepresentation = Pres;
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myGraphicStructure->Display();
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}
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// =======================================================================
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// function : Display
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// purpose :
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// =======================================================================
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void V3d_PositionLight::Tracking (const Handle(V3d_View)& theView,
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const V3d_TypeOfPickLight theWhatPick,
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const Standard_Integer theXpix,
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const Standard_Integer theYpix)
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{
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Standard_Real XPp,YPp,PXT,PYT,X,Y,Z,Rayon,Ylim;
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Standard_Real XMinTrack,XMaxTrack,YMinTrack,YMaxTrack;
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Standard_Real XT,YT,ZT,X0,Y0,Z0,XP,YP,ZP,VX,VY,VZ,A,B,C,Delta;
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Standard_Real DX,DY,PXP,PYP,Xproj,Yproj;
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Standard_Real A1,A2,B1,B2,Rap,OldRprj,NewRprj;
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Standard_Real Xi,Yi,Zi,DeltaX,DeltaY,DeltaZ,Lambda;
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Standard_Integer IPX,IPY;
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theView->Convert(theXpix,theYpix,XPp,YPp);
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X0 = myTarget.X();
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Y0 = myTarget.Y();
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Z0 = myTarget.Z();
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theView->Project(X0,Y0,Z0,PXT,PYT);
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theView->Convert(PXT,PYT,IPX,IPY);
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// Coord 3d in the plane of projection of the target.
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theView->Convert(IPX,IPY,XT,YT,ZT);
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switch (theWhatPick) {
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case V3d_POSITIONLIGHT :
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// The Coordinates should remain inside of the sphere
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Rayon = Radius();
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XMinTrack = PXT - Rayon;
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XMaxTrack = PXT + Rayon;
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Ylim = Sqrt( Square(Rayon) - Square(XPp - PXT) );
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YMinTrack = PYT - Ylim;
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YMaxTrack = PYT + Ylim;
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if (XPp >= XMinTrack && XPp <= XMaxTrack) {
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if (YPp >= YMinTrack && YPp <= YMaxTrack) {
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theView->ProjReferenceAxe(theXpix,theYpix,XP,YP,ZP,VX,VY,VZ);
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DeltaX = X0 - XP;
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DeltaY = Y0 - YP;
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DeltaZ = Z0 - ZP;
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// The point of intersection of straight lines defined by :
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// - Straight line passing by the point of projection and the eye
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// if this is a perspective, parralel to the normal of the view
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// if this is an axonometric view.
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// position in the view is parallel to the normal of the view
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// - The distance position of the target camera is equal to the radius.
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A = VX*VX + VY*VY + VZ*VZ ;
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B = -2. * (VX*DeltaX + VY*DeltaY + VZ*DeltaZ);
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C = DeltaX*DeltaX + DeltaY*DeltaY + DeltaZ*DeltaZ
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- Rayon*Rayon ;
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Delta = B*B - 4.*A*C;
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if ( Delta >= 0 ) {
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Lambda = (-B + Sqrt(Delta))/(2.*A);
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X = XP + Lambda*VX;
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Y = YP + Lambda*VY;
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Z = ZP + Lambda*VZ;
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SetPosition(X,Y,Z);
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if (Type() == V3d_SPOT)
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((V3d_SpotLight*)this)->SetDirection(X0-X,Y0-Y,Z0-Z);
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Display(theView,myTypeOfRepresentation);
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(theView->Viewer())->UpdateLights();
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}
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}
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}
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break;
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case V3d_SPACELIGHT :
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theView->Convert(PXT,PYT,IPX,IPY);
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// In this case Xpix,Ypix correspond to a distance, relative
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// to the translation that is planned to be performed on the sphere.
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theView->Convert(IPX+theXpix,IPY+theYpix,X,Y,Z);
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X = X+X0-XT;
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Y = Y+Y0-YT;
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Z = Z+Z0-ZT;
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SetTarget(X,Y,Z);
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Display(theView,myTypeOfRepresentation);
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(theView->Viewer())->UpdateLights();
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break;
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case V3d_ExtRADIUSLIGHT :
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if (Type() == V3d_DIRECTIONAL)
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break;
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// it is attempted to preserve the target direction position of the
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// source ==> the point is projected on the target source direction.
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this->Position(Xi,Yi,Zi);
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theView->Project(Xi,Yi,Zi,PXP,PYP);
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DX = PXP - PXT;
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DY = PYP - PYT;
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A1 = DY/DX ; B1 = PYT - A1*PXT;
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A2 = -DX/DY; B2 = YPp - A2*XPp;
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Xproj = (B2 - B1) / (A1 - A2);
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Yproj = A1*Xproj + B1;
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if ( (DX*(Xproj-PXT) > 0.) && (DY*(Yproj-PYT) > 0.) ) {
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OldRprj = Sqrt ( Square (PXP-PXT) + Square (PYP-PYT) );
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NewRprj = Sqrt ( Square (Xproj-PXT) + Square (Yproj-PYT) );
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Rap = NewRprj/OldRprj;
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Rayon = Radius();
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Rayon = Rayon * Rap;
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SetRadius(Rayon);
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Display(theView,myTypeOfRepresentation);
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(theView->Viewer())->UpdateLights();
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}
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break;
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case V3d_IntRADIUSLIGHT :
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if (Type() == V3d_DIRECTIONAL)
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break;
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// it is attempted to preserve the target direction position of the
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// source ==> the point is projected on the target source direction.
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Position(Xi,Yi,Zi);
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theView->Project(Xi,Yi,Zi,PXP,PYP);
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DX = PXP - PXT;
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DY = PYP - PYT;
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A1 = DY/DX ; B1 = PYT - A1*PXT;
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A2 = -DX/DY; B2 = YPp - A2*XPp;
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Xproj = (B2 - B1) / (A1 - A2);
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Yproj = A1*Xproj + B1;
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if ( (DX*(Xproj-PXP) < 0.) && (DY*(Yproj-PYP) < 0.) ) {
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OldRprj = Sqrt ( Square (PXP-PXT) + Square (PYP-PYT) );
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NewRprj = Sqrt ( Square (Xproj-PXP) + Square (Yproj-PYP) );
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Rap = NewRprj/OldRprj;
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Rayon = Radius();
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Rayon = Rayon * Rap;
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// the source should remain at a fixed position,
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// only the target is modified.
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gp_XYZ aPos;
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Position (aPos.ChangeCoord (1), aPos.ChangeCoord (2), aPos.ChangeCoord (3));
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gp_XYZ aDir = myTarget.XYZ() - aPos;
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aDir.Normalize();
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aDir.Coord(X,Y,Z);
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X = Xi + Rayon*X;
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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;
|
||||
theViewer->AddLight (this);
|
||||
}
|
||||
}
|
||||
|
||||
// =======================================================================
|
||||
// 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 : Erase
|
||||
// purpose :
|
||||
// =======================================================================
|
||||
void V3d_PositionLight::Erase()
|
||||
{
|
||||
if (!myGraphicStructure.IsNull()) myGraphicStructure->Erase();
|
||||
if (!myGraphicStructure1.IsNull()) myGraphicStructure1->Erase();
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user