void ColorPerFaceRender::updateVBO(Utils::VBO& vboPosition, Utils::VBO& vboColor, typename PFP::MAP& map,
const VertexAttribute<typename PFP::VEC3, typename PFP::MAP>& positions, const AttributeHandler<typename PFP::VEC3,ORBIT, typename PFP::MAP>& colorPerXXX)
{
typedef typename PFP::VEC3 VEC3;
typedef typename PFP::REAL REAL;
typedef Geom::Vec3f VEC3F;
std::vector<VEC3F> buffer;
buffer.reserve(16384);
std::vector<VEC3F> bufferColors;
bufferColors.reserve(16384);
TraversorCell<typename PFP::MAP, FACE> traFace(map);
for (Dart d=traFace.begin(); d!=traFace.end(); d=traFace.next())
{
Dart a = d;
Dart b = map.phi1(a);
Dart c = map.phi1(b);
// loop to cut a polygon in triangle on the fly (works only with convex faces)
do
{
buffer.push_back(positions[d]);
bufferColors.push_back(colorPerXXX[d]);
buffer.push_back(positions[b]);
bufferColors.push_back(colorPerXXX[b]);
buffer.push_back(positions[c]);
bufferColors.push_back(colorPerXXX[c]);
b = c;
c = map.phi1(b);
} while (c != d);
}
m_nbTris = GLuint(buffer.size()/3);
vboPosition.setDataSize(3);
vboPosition.allocate(uint32(buffer.size()));
VEC3F* ptrPos = reinterpret_cast<VEC3F*>(vboPosition.lockPtr());
memcpy(ptrPos,&buffer[0],buffer.size()*sizeof(VEC3F));
vboPosition.releasePtr();
vboColor.setDataSize(3);
vboColor.allocate(uint32(bufferColors.size()));
VEC3F* ptrCol = reinterpret_cast<VEC3F*>(vboColor.lockPtr());
memcpy(ptrCol,&bufferColors[0],bufferColors.size()*sizeof(VEC3F));
vboColor.releasePtr();
}
void Topo3PrimalRender<PFP>::updateData(MAP& mapx, const VertexAttribute<VEC3, MAP>& positions, float ke, float kf)
{
if (m_attIndex.map() != &mapx)
m_attIndex = mapx.template getAttribute<unsigned int, DART, MAP>("dart_index");
if (!m_attIndex.isValid())
m_attIndex = mapx.template addAttribute<unsigned int, DART, MAP>("dart_index");
// m_nbDarts = 0;
// for (Dart d = mapx.begin(); d != mapx.end(); mapx.next(d))
// {
// m_nbDarts++;
// }
m_nbDarts = mapx.getNbDarts();
// beta2/3
DartAutoAttribute<VEC3, MAP> fv2(mapx);
m_vbo2->bind();
glBufferData(GL_ARRAY_BUFFER, 2*m_nbDarts*sizeof(Geom::Vec3f), 0, GL_STREAM_DRAW);
GLvoid* ColorDartsBuffer = glMapBuffer(GL_ARRAY_BUFFER, GL_READ_WRITE);
Geom::Vec3f* colorDartBuf = reinterpret_cast<Geom::Vec3f*>(ColorDartsBuffer);
if (m_bufferDartPosition!=NULL)
delete m_bufferDartPosition;
m_bufferDartPosition = new Geom::Vec3f[2*m_nbDarts];
Geom::Vec3f* positionDartBuf = reinterpret_cast<Geom::Vec3f*>(m_bufferDartPosition);
unsigned int posDBI = 0;
int nbf = 0;
//traverse each face of each volume
TraversorF<MAP> traFace(mapx);
for (Dart d = traFace.begin(); d != traFace.end(); d = traFace.next())
{
std::vector<VEC3> vecPos;
vecPos.reserve(16);
VEC3 centerFace = Algo::Surface::Geometry::faceCentroidELW<PFP>(mapx, d, positions);
//shrink the face
float okf = 1.0f - kf;
Dart dd = d;
do
{
VEC3 P = centerFace*okf + positions[dd]*kf;
vecPos.push_back(P);
dd = mapx.phi1(dd);
} while (dd != d);
unsigned int nb = vecPos.size();
vecPos.push_back(vecPos.front()); // copy the first for easy computation on next loop
// compute position of points to use for drawing topo
float oke = 1.0f - ke;
for (unsigned int i = 0; i < nb; ++i)
{
VEC3 P = vecPos[i]*ke + vecPos[i+1]*oke;
VEC3 Q = vecPos[i+1]*ke + vecPos[i]*oke;
// VEC3 PP = 0.52f*P + 0.48f*Q;
// VEC3 QQ = 0.52f*Q + 0.48f*P;
VEC3 PP = 0.56f*P + 0.44f*Q;
VEC3 QQ = 0.56f*Q + 0.44f*P;
*positionDartBuf++ = PFP::toVec3f(P);
*positionDartBuf++ = PFP::toVec3f(PP);
if (mapx.template isBoundaryMarked<3>(d))
{
*colorDartBuf++ = m_boundaryDartsColor;
*colorDartBuf++ = m_boundaryDartsColor;
}
else
{
*colorDartBuf++ = m_dartsColor;
*colorDartBuf++ = m_dartsColor;
}
m_attIndex[d] = posDBI;
posDBI+=2;
fv2[d] = (P+PP)*0.5f;
*positionDartBuf++ = PFP::toVec3f(Q);
*positionDartBuf++ = PFP::toVec3f(QQ);
Dart dx = mapx.phi3(d);
if (mapx.template isBoundaryMarked<3>(dx))
{
*colorDartBuf++ = m_boundaryDartsColor;
*colorDartBuf++ = m_boundaryDartsColor;
}
else
{
*colorDartBuf++ = m_dartsColor;
*colorDartBuf++ = m_dartsColor;
}
m_attIndex[dx] = posDBI;
posDBI+=2;
fv2[dx] = (Q+QQ)*0.5f;
d = mapx.phi1(d);
}
nbf++;
}
m_vbo2->bind();
glUnmapBuffer(GL_ARRAY_BUFFER);
m_vbo0->bind();
glBufferData(GL_ARRAY_BUFFER, 2*m_nbDarts*sizeof(Geom::Vec3f), m_bufferDartPosition, GL_STREAM_DRAW);
// alpha2
m_vbo1->bind();
glBufferData(GL_ARRAY_BUFFER, 2*m_nbDarts*sizeof(Geom::Vec3f), 0, GL_STREAM_DRAW);
GLvoid* PositionBuffer2 = glMapBufferARB(GL_ARRAY_BUFFER, GL_READ_WRITE);
Geom::Vec3f* positionF2 = reinterpret_cast<Geom::Vec3f*>(PositionBuffer2);
m_nbRel2 = 0;
for (Dart d = mapx.begin(); d != mapx.end(); mapx.next(d))
{
Dart e = mapx.phi2(mapx.phi3(d));
//if (d < e)
{
*positionF2++ = PFP::toVec3f(fv2[d]);
*positionF2++ = PFP::toVec3f(fv2[e]);
m_nbRel2++;
}
}
m_vbo1->bind();
glUnmapBuffer(GL_ARRAY_BUFFER);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
