private void KeepSnappedHierarchyInSnapSurfaceArea(GameObject hierarchyRoot, ProjectedBoxFacePivotPoints projectedHierarchyBoxFacePivotPoints)
{
OrientedBox hierarchyWorldOrientedBox = hierarchyRoot.GetHierarchyWorldOrientedBox();
List <Vector3> worldBoxPoints = hierarchyWorldOrientedBox.GetCenterAndCornerPoints();
XZOrientedQuad3D snapSurfaceQuad = _objectSnapSurface.SurfaceQuad;
List <Plane> quadSegmentPlanes = snapSurfaceQuad.GetBoundarySegmentPlanesFacingOutward();
List <Vector3> pushVectors = new List <Vector3>(quadSegmentPlanes.Count);
// All box points which are in front of the surface quad's plane are outside
// the surface so we will have to push them back.
for (int segmentPlaneIndex = 0; segmentPlaneIndex < quadSegmentPlanes.Count; ++segmentPlaneIndex)
{
Plane segmentPlane = quadSegmentPlanes[segmentPlaneIndex];
Vector3 furthestPointInFront;
if (segmentPlane.GetFurthestPointInFront(worldBoxPoints, out furthestPointInFront))
{
Vector3 projectedPoint = segmentPlane.ProjectPoint(furthestPointInFront);
pushVectors.Add(projectedPoint - furthestPointInFront);
}
}
Transform hierarchyRootTransform = hierarchyRoot.transform;
foreach (Vector3 pushVector in pushVectors)
{
hierarchyRootTransform.position += pushVector;
projectedHierarchyBoxFacePivotPoints.MovePoints(pushVector);
}
}
