static csVector3 FindBiggestHorizontalMovement (
const csBox3& box1, const csReversibleTransform& trans1,
const csBox3& box2, const csReversibleTransform& trans2)
{
// The origin of the second box in the 3D space of the first box.
csVector3 o2Tr = trans1.Other2This (trans2.GetOrigin ());
// Transformed bounding box.
csBox3 box2Tr;
box2Tr.StartBoundingBox (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (0))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (1))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (2))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (3))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (4))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (5))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (6))));
box2Tr.AddBoundingVertexSmart (trans1.Other2ThisRelative (trans2.This2OtherRelative (box2.GetCorner (7))));
float xr = o2Tr.x - box1.MaxX () + box2Tr.MinX ();
float xl = box1.MinX () - o2Tr.x - box2Tr.MaxX ();
float zr = o2Tr.z - box1.MaxZ () + box2Tr.MinZ ();
float zl = box1.MinZ () - o2Tr.z - box2Tr.MaxZ ();
csVector3 newpos = trans2.GetOrigin ();
if (xr >= xl && xr >= zr && xr >= zl)
newpos = trans1.This2Other (o2Tr + csVector3 (-xr, 0, -o2Tr.z));
else if (xl >= xr && xl >= zr && xl >= zl)
newpos = trans1.This2Other (o2Tr + csVector3 (xl, 0, -o2Tr.z));
else if (zr >= xl && zr >= xr && zr >= zl)
newpos = trans1.This2Other (o2Tr + csVector3 (-o2Tr.x, 0, -zr));
else if (zl >= xl && zl >= xr && zl >= zr)
newpos = trans1.This2Other (o2Tr + csVector3 (-o2Tr.x, 0, zl));
return newpos;
}
