added calback funtions color on tetrahedron or vertex
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#ifndef __GLWRAPTETRA__
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#define __GLWRAPTETRA__
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#include<GL/GL.h>
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#include <vcg/space/color4.h>
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#include <vcg/space/Tetra3.h>
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#include <wrap/gl/space.h>
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namespace vcg {
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class GLW {
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public:
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enum DrawMode {DMNone, DMSmallTetra,DMFlat,DMWire, DMHidden,DMTransparent,DMFlatWire} ;
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enum NormalMode{NMFlat,NMSmooth, NMUser, NMPerMesh};
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enum ColorMode {CMNone, CMPerMesh,CMUser,CMPerTetraF,CMPerVertexF,CMPerVertex};
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enum Hint {HShrinkFactor};
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};
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template <typename CONT_TETRA>
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class GLWrapTetra:public GLW{
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public:
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typedef typename CONT_TETRA::value_type TetraType;
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typedef typename TetraType::VertexType VertexType;
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typedef typename VertexType::ScalarType ScalarType;
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typedef typename VertexType::CoordType Point3x;
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GLWrapTetra(CONT_TETRA & _t):tetra(_t){}
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CONT_TETRA & tetra;
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private:
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double shrink_factor;
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public:
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void SetHint(Hint h, double value){
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switch(h){
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case HShrinkFactor: shrink_factor = value; break;
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}
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}
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typedef Color4b (*color_func_vertex)(VertexType&v);
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color_func_vertex color_vertex;
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typedef Color4b (*color_func_tetra)(TetraType&v);
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color_func_tetra color_tetra;
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template <DrawMode dm,NormalMode nm,ColorMode cm >
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void Draw(){
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switch (dm){
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case DMNone: break;
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case DMSmallTetra: _DrawSmallTetra<cm>();break;
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case DMFlat:_DrawSurface<dm,nm,cm>();break;
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case DMWire:_DrawSurface<dm,nm,cm>();break;
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case DMHidden:break;//DrawSurface<dm,nm,cm>();break;
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case DMFlatWire:_DrawFlatWire<nm,cm>(); break;
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case DMTransparent:break;
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}
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}
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private:
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template <ColorMode cm >
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void _DrawSmallTetra(){
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Point3x p[4],br;
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CONT_TETRA::iterator it;
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glPushAttrib(0xffffffff);
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glEnable(GL_LIGHTING);
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glEnable(GL_NORMALIZE);
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glPolygonMode(GL_FRONT,GL_FILL);
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glBegin(GL_TRIANGLES);
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for( it = tetra.begin(); it != tetra.end(); ++it)
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if(!(*it).IsD()){
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_DrawSmallTetra<cm>(*it);
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}
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glEnd();
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glPopAttrib();
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}
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template <NormalMode nm,ColorMode cm >
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void _DrawFlatWire(){
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glPushAttrib(0xffff);
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glEnable(GL_DEPTH);
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glDepthRange(0.001,1.0);
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Draw<DMFlat,nm,cm>();
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glDisable(GL_LIGHTING);
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glColor3f(0.0,0.0,0.0);
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glDepthRange(0.0,0.999);
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Draw<DMWire,nm,cm>();
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glPopAttrib();
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}
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template <DrawMode dm,NormalMode nm,ColorMode cm >
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void _DrawSurface(){
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CONT_TETRA::iterator it;
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glPushAttrib(0xffffffff);
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glEnable(GL_LIGHTING);
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glEnable(GL_NORMALIZE);
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if(dm == DMWire)
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glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
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else
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glPolygonMode(GL_FRONT,GL_FILL);
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glBegin(GL_TRIANGLES);
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for( it = tetra.begin(); it != tetra.end(); ++it)
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_DrawTetra<nm,cm>((*it));
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glEnd();
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glPopAttrib();
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}
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template <NormalMode nm,ColorMode cm >
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void _DrawTetra(TetraType &t)
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{
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if(!(t.IsD()))
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{
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_ChooseColorTetra<cm>(t);
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for(int i = 0; i < 4; ++i){
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if(t.IsBorderF(i))
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{
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if(nm==NMSmooth)
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_DrawFaceSmooth<cm>(t,i);
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else
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if(nm==NMFlat)
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_DrawFace<cm>(t,i);
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}
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}
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}
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}
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template <ColorMode cm >
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void _ChooseColorTetra(TetraType &t)
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{
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if (cm==CMNone)
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glColor3d(0.8,0.8,0.8);
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else
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if(cm == CMPerTetraF)
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{
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Color4b c;
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c = color_tetra(t);
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GLint ic[4]; ic[0] = c[0];ic[1] = c[1];ic[2] = c[2];ic[3] = c[3];
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glMaterialiv(GL_FRONT,GL_DIFFUSE ,ic);
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}
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}
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template <ColorMode cm >
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void _ChooseColorVertex(VertexType &v)
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{
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if (cm!=CMNone)
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{
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if(cm == CMPerVertexF)
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{
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Color4b c;
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c = color_vertex(v);
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GLint ic[4]; ic[0] = c[0];ic[1] = c[1];ic[2] = c[2];ic[3] = c[3];
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glMaterialiv(GL_FRONT,GL_DIFFUSE ,ic);
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}
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else
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if(cm == CMPerVertex)
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glColor3f(v.C()[0],v.C()[1],v.C()[2]);
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}
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}
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template <ColorMode cm >
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void _DrawFaceSmooth(TetraType &t,int face)
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{
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VertexType *v0=t.V(Tetra::VofF(face,0));
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VertexType *v1=t.V(Tetra::VofF(face,1));
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VertexType *v2=t.V(Tetra::VofF(face,2));
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_ChooseColorVertex<cm>(*v0);
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glNormal(v0->N());
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glVertex(v0->P());
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_ChooseColorVertex<cm>(*v1);
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glNormal(v1->N());
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glVertex(v1->P());
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_ChooseColorVertex<cm>(*v2);
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glNormal(v2->N());
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glVertex(v2->P());
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}
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template <ColorMode cm >
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void _DrawFace(TetraType &t,int face)
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{
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glNormal(t.N(face));
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VertexType *v0=t.V(Tetra::VofF(face,0));
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VertexType *v1=t.V(Tetra::VofF(face,1));
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VertexType *v2=t.V(Tetra::VofF(face,2));
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_ChooseColorVertex<cm>(*v0);
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glVertex(v0->P());
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_ChooseColorVertex<cm>(*v1);
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glVertex(v1->P());
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_ChooseColorVertex<cm>(*v2);
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glVertex(v2->P());
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}
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template <ColorMode cm >
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void _DrawSmallTetra(TetraType &t)
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{
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Tetra3<ScalarType> T=Tetra3<ScalarType>();
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T.P0(0)=t.V(0)->cP();
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T.P1(0)=t.V(1)->cP();
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T.P2(0)=t.V(2)->cP();
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T.P3(0)=t.V(3)->cP();
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Point3x p[4], br;
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br=T.ComputeBarycenter();
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for(int i = 0; i < 4; ++i)
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p[i] = t.V(i)->P()* shrink_factor + br *(1- shrink_factor);
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_ChooseColorTetra<cm>(t);
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for(int i = 0; i < 4; ++i)
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{
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glNormal(t.N(i));
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VertexType *v0=t.V(Tetra::VofF(i,0));
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VertexType *v1=t.V(Tetra::VofF(i,1));
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VertexType *v2=t.V(Tetra::VofF(i,2));
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_ChooseColorVertex<cm>(*v0);
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glVertex(p[Tetra::VofF(i,0)]);
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_ChooseColorVertex<cm>(*v1);
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glVertex(p[Tetra::VofF(i,1)]);
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_ChooseColorVertex<cm>(*v2);
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glVertex(p[Tetra::VofF(i,2)]);
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}
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}
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};
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}
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#endif
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