public override BulletShape BuildHullShapeFromMesh(BulletWorld world, BulletShape meshShape, HACDParams parms)
{
BulletWorldUnman worldu = world as BulletWorldUnman;
BulletShapeUnman shapeu = meshShape as BulletShapeUnman;
return new BulletShapeUnman(
BSAPICPP.BuildHullShapeFromMesh2(worldu.ptr, shapeu.ptr, parms),
BSPhysicsShapeType.SHAPE_HULL);
}