void SBVRGeogen2D::ComputeGeometry(bool bMeshOnly) {
InitBBOX();
if (bMeshOnly) {
m_vSliceTrianglesX.clear();
m_vSliceTrianglesY.clear();
m_vSliceTrianglesZ.clear();
SortMeshWithoutVolume(m_vSliceTrianglesX);
m_vSliceTrianglesY = m_vSliceTrianglesX;
m_vSliceTrianglesZ = m_vSliceTrianglesX;
return;
}
// TODO handle mesh when the volume is not empty
switch (m_eMethod) {
case METHOD_REZK : ComputeGeometryRezk(); break;
case METHOD_KRUEGER : ComputeGeometryKrueger(); break;
default : ComputeGeometryKruegerFast(); break;
}
if(m_bClipPlaneEnabled && (m_bClipVolume || m_bClipMesh)) {
PLANE<float> transformed = m_ClipPlane * m_matView;
const FLOATVECTOR3 normal(transformed.xyz());
const float d = transformed.d();
m_vSliceTrianglesX = ClipTriangles(m_vSliceTrianglesX, normal, d);
m_vSliceTrianglesY = ClipTriangles(m_vSliceTrianglesY, normal, d);
m_vSliceTrianglesZ = ClipTriangles(m_vSliceTrianglesZ, normal, d);
}
}
void GLRaycaster::RenderBox(const RenderRegion& renderRegion,
const FLOATVECTOR3& vCenter,
const FLOATVECTOR3& vExtend,
const FLOATVECTOR3& vMinCoords,
const FLOATVECTOR3& vMaxCoords, bool bCullBack,
EStereoID eStereoID) const {
m_pContext->GetStateManager()->SetCullState(bCullBack ? CULL_FRONT : CULL_BACK);
FLOATVECTOR3 vMinPoint, vMaxPoint;
vMinPoint = (vCenter - vExtend/2.0);
vMaxPoint = (vCenter + vExtend/2.0);
// \todo compute this only once per brick
FLOATMATRIX4 m = ComputeEyeToTextureMatrix(renderRegion,
FLOATVECTOR3(vMaxPoint.x, vMaxPoint.y, vMaxPoint.z),
FLOATVECTOR3(vMaxCoords.x, vMaxCoords.y, vMaxCoords.z),
FLOATVECTOR3(vMinPoint.x, vMinPoint.y, vMinPoint.z),
FLOATVECTOR3(vMinCoords.x, vMinCoords.y, vMinCoords.z),
eStereoID);
m.setTextureMatrix();
std::vector<FLOATVECTOR3> posData;
MaxMinBoxToVector(vMinPoint, vMaxPoint, posData);
if ( m_bClipPlaneOn ) {
// clip plane is normaly defined in world space, transform back to model space
FLOATMATRIX4 inv = (renderRegion.rotation * renderRegion.translation).inverse();
PLANE<float> transformed = m_ClipPlane.Plane() * inv;
const FLOATVECTOR3 normal(transformed.xyz().normalized());
const float d = transformed.d();
Clipper::BoxPlane(posData, normal, d);
}
m_pBBoxVBO->ClearVertexData();
m_pBBoxVBO->AddVertexData(posData);
m_pBBoxVBO->Bind();
m_pBBoxVBO->Draw(GL_TRIANGLES);
m_pBBoxVBO->UnBind();
}
