float plMaxNodeBase::RegionPriority()
{
TimeValue currTime = 0;//hsConverterUtils::Instance().GetTime(GetInterface());
Object *obj = EvalWorldState(currTime).obj;
if( !obj )
return 0;
Matrix3 l2w = GetObjectTM(currTime);
if( obj->ClassID() == Class_ID(DUMMY_CLASS_ID,0) )
{
DummyObject* dummy = (DummyObject*)obj;
Box3 bnd = dummy->GetBox();
return BoxVolume(bnd, l2w);
}
if( obj->CanConvertToType(triObjectClassID) )
{
TriObject *meshObj = (TriObject *)obj->ConvertToType(currTime, triObjectClassID);
if( !meshObj )
return 0;
Mesh& mesh = meshObj->mesh;
Box3 bnd = mesh.getBoundingBox();
if( meshObj != obj )
meshObj->DeleteThis();
return BoxVolume(bnd, l2w);
}
// Don't know how to interpret other, it's not contained.
return 0;
}
hsBool plMaxNodeBase::Contains(const Point3& worldPt)
{
TimeValue currTime = 0;//hsConverterUtils::Instance().GetTime(GetInterface());
Object *obj = EvalWorldState(currTime).obj;
if( !obj )
return false;
Matrix3 l2w = GetObjectTM(currTime);
Matrix3 w2l = Inverse(l2w);
Point3 pt = w2l * worldPt;
if( obj->ClassID() == Class_ID(DUMMY_CLASS_ID,0) )
{
DummyObject* dummy = (DummyObject*)obj;
Box3 bnd = dummy->GetBox();
return bnd.Contains(pt);
}
if( obj->CanConvertToType(triObjectClassID) )
{
TriObject *meshObj = (TriObject *)obj->ConvertToType(currTime, triObjectClassID);
if( !meshObj )
return false;
Mesh& mesh = meshObj->mesh;
Box3 bnd = mesh.getBoundingBox();
if( !bnd.Contains(pt) )
{
if( meshObj != obj )
meshObj->DeleteThis();
return false;
}
hsBool retVal = true;
int i;
for( i = 0; i < mesh.getNumFaces(); i++ )
{
Face& face = mesh.faces[i];
Point3 p0 = mesh.verts[face.v[0]];
Point3 p1 = mesh.verts[face.v[1]];
Point3 p2 = mesh.verts[face.v[2]];
Point3 n = CrossProd(p1 - p0, p2 - p0);
if( DotProd(pt, n) > DotProd(p0, n) )
{
retVal = false;
break;
}
}
if( meshObj != obj )
meshObj->DeleteThis();
return retVal;
}
// If we can't figure out what it is, the point isn't inside it.
return false;
}
static void MakeDummyMesh(plMaxNode* node, plMaxMeshExtractor::NeutralMesh& mesh)
{
hsPoint3 minV, maxV;
Object* thisObj = node->GetObjectRef();
DummyObject* thisDummy = (DummyObject*)thisObj;
Box3 thisBoundSurface = thisDummy->GetBox();
minV.fX = thisBoundSurface.Min().x;
minV.fY = thisBoundSurface.Min().y;
minV.fZ = thisBoundSurface.Min().z;
maxV.fX = thisBoundSurface.Max().x;
maxV.fY = thisBoundSurface.Max().y;
maxV.fZ = thisBoundSurface.Max().z;
MakeBoxMesh(node, mesh, minV, maxV);
}
