//-----------------------------------------------------------------------------
void RayIntersector::intersectGeometry(Actor* act, Geometry* geom)
{
ArrayAbstract* posarr = geom->vertexArray() ? geom->vertexArray() : geom->vertexAttribArray(vl::VA_Position) ? geom->vertexAttribArray(vl::VA_Position)->data() : NULL;
if (posarr)
{
fmat4 matrix = act->transform() ? (fmat4)act->transform()->worldMatrix() : fmat4();
for(int i=0; i<geom->drawCalls()->size(); ++i)
{
DrawCall* prim = geom->drawCalls()->at(i);
int itri = 0;
for(TriangleIterator trit = prim->triangleIterator(); trit.hasNext(); trit.next(), ++itri)
{
int ia = trit.a();
int ib = trit.b();
int ic = trit.c();
fvec3 a = posarr->getAsVec3(ia);
fvec3 b = posarr->getAsVec3(ib);
fvec3 c = posarr->getAsVec3(ic);
if (act->transform())
{
a = matrix * a;
b = matrix * b;
c = matrix * c;
}
intersectTriangle(a, b, c, ia, ib, ic, act, geom, prim, itri);
}
}
}
}
/** Counts the number of virtual triangles of a DrawCall., i.e. the number of triangles you would retrieve by iterating over the iterator returned by triangleIterator(). */
u32 countTriangles() const
{
u32 count = 0;
for( TriangleIterator it = triangleIterator(); it.hasNext(); it.next() )
++count;
return count;
}