extern void draw_shadow_volume_extruded_edges(/*lint -e{818}*/Occluder* pOcc, const float light_position[4], unsigned int prim)
{
if (pOcc->show)
{
float olight[4];
mult_matrix_vec((ConstMatrix)pOcc->invMat, light_position, olight);
glNewList(pOcc->shadow_list, GL_COMPILE);
glPushMatrix();
moveToOcc(pOcc);
glBegin(prim);
GenerateShadowVolume(pOcc, olight);
glEnd();
glPopMatrix();
glEndList();
}
}
void ShadowVolume::ProcessModel(const PolygonalModel& model, const MatrixHomogeneous& mTotal, const std::vector<Normals::PolygonNormalData>& normals, bool clip, const ClippingPlane& cp, const PolygonAdjacencyGraph& polygonAdj)
{
std::pair<PolygonalObject, std::vector<Normals::PolygonNormalData>> shadowObj = GenerateShadowVolume(model, normals, polygonAdj);
shadowObj.first = mTotal * shadowObj.first;
for (auto i = shadowObj.second.begin(); i != shadowObj.second.end(); ++i)
*i = mTotal * *i;
_shadowSurfaces.push_back(shadowObj.first.polygons);
_shadowSurfaceNormals.push_back(shadowObj.second);
for (auto p = shadowObj.first.polygons.begin(); p != shadowObj.first.polygons.end(); ++p)
{
p->color = _currPolyId;
p->colorValid = true;
++_currPolyId;
}
ModelAttr attr2;
attr2.removeBackFace = BACKFACE_REMOVE_BACK;
attr2.Shading = SHADING_NONE;
attr2.forceColor = true;
attr2.color = _currModelId++;
DrawingObject img;
img.shadowVolume = this;
img.active = DrawingObject::DRAWING_OBJECT_SV;
_currShadowMode = ShadowExit;
DrawObject(img, shadowObj.first, mTotal, attr2, shadowObj.second, 0, true, clip, cp);
_currShadowMode = ShadowEnter;
size_t normalsOffset = 0;
for (auto obj = model.begin(); obj != model.end(); ++obj)
{
DrawObject(img, *obj, mTotal, attr2, normals, normalsOffset, true, clip, cp);
normalsOffset += obj->polygons.size();
}
attr2.removeBackFace = BACKFACE_REMOVE_FRONT;
_currShadowMode = ShadowEnter;
DrawObject(img, shadowObj.first, mTotal, attr2, shadowObj.second, 0, true, clip, cp);
}