public AxisAlignedBoundingBox GetAxisAlignedBoundingBox(Mesh mesh, Matrix4X4 transform)
{
lock (locker)
{
var cacheCount = cache.Count();
if (cacheCount > 100)
{
cache.Clear();
}
// if we already have the transform with exact bounds than return it
AxisAlignedBoundingBox aabb;
if (cache.TryGetValue(transform, out aabb))
{
// return, the fast cache for this transform is correct
return(aabb);
}
var positions = mesh.Vertices;
var convexHull = mesh.GetConvexHull(true);
if (convexHull != null)
{
positions = convexHull.Vertices;
}
return(CalculateBounds(positions, transform));
}
}
public AxisAlignedBoundingBox GetAxisAlignedBoundingBox(Mesh mesh, AxisAlignedBoundingBox verticesBounds, Matrix4X4 transform)
{
// if we already have the transform with exact bounds than return it
if (aabbTransform == transform && cachedAabb != null)
{
// return, the fast cache for this transform is correct
return(cachedAabb);
}
IEnumerable <Vector3> positions = mesh.Vertices.Select((v) => v.Position);
lock (locker)
{
var convexHull = mesh.GetConvexHull(true);
if (convexHull != null)
{
positions = convexHull.Vertices.Select((v) => v.Position);
}
}
CalculateBounds(positions, transform);
return(cachedAabb);
}