bool AABBTreeOfVerticesBuilder::ComputeGlobalBox(const udword* primitives, udword nb_prims, IceMaths::AABB& global_box) const
{
// Checkings
if(!primitives || !nb_prims) return false;
// Initialize global box
global_box.SetEmpty();
// Loop through vertices
for(udword i=0;i<nb_prims;i++)
{
// Update global box
global_box.Extend(mVertexArray[primitives[i]]);
}
return true;
}
void ocTriTree::intersect(const z3D::Core::AABB& aabb, vector<int32_t>& tris)
{
Opcode::AABBCache cache;
cache.Model = &_pimpl.get().model;
IceMaths::AABB box;
box.SetMinMax(Point(&aabb.minimum().x), Point(&aabb.maximum().x));
bool okay = _pimpl.get().aabb_collider.Collide(cache, box, _pimpl.get().model);
if(!okay)
return;
Z_STATIC_ASSERT( sizeof(udword) == sizeof(uint32_t), WRONG_ASSUMPTION );
size_t count = _pimpl.get().aabb_collider.GetNbTouchedPrimitives();
uint32_t* tris2 = (uint32_t*)_pimpl.get().aabb_collider.GetTouchedPrimitives();
if(count)
tris.insert(tris.end(), tris2, tris2 + count);
}
bool AABBTreeOfAABBsBuilder::ComputeGlobalBox(const udword* primitives, udword nb_prims, IceMaths::AABB& global_box) const
{
// Checkings
if(!primitives || !nb_prims) return false;
// Initialize global box
global_box = mAABBArray[primitives[0]];
// Loop through boxes
for(udword i=1;i<nb_prims;i++)
{
// Update global box
global_box.Add(mAABBArray[primitives[i]]);
}
return true;
}
bool AABBTreeOfTrianglesBuilder::ComputeGlobalBox(const udword* primitives, udword nb_prims, IceMaths::AABB& global_box) const
{
// Checkings
if(!primitives || !nb_prims) return false;
// Initialize global box
IceMaths::Point Min(MAX_FLOAT, MAX_FLOAT, MAX_FLOAT);
IceMaths::Point Max(MIN_FLOAT, MIN_FLOAT, MIN_FLOAT);
// Loop through triangles
VertexPointers VP;
while(nb_prims--)
{
// Get current triangle-vertices
mIMesh->GetTriangle(VP, *primitives++);
// Update global box
Min.Min(*VP.Vertex[0]).Min(*VP.Vertex[1]).Min(*VP.Vertex[2]);
Max.Max(*VP.Vertex[0]).Max(*VP.Vertex[1]).Max(*VP.Vertex[2]);
}
global_box.SetMinMax(Min, Max);
return true;
}