public void DrawMask(FastBitmap fbmp)
{
PointF[] points = stage.TransformPointsCamera;
PointF[] allPts = points.GetMidpointsAndCenter();
if (points != null && points.Length == 4)
{
PointF center = stage.RotationCenterToCamera;
ColorMask baseMask = (transformKind == TransformKind.Scale) ? ColorMask.ScaleTopLeft : ColorMask.RotateTopLeft;
if (AspectConstrainTarget != BondAttachment.None)
{
uint handleIndex = (uint)AspectConstrainTarget.GetHandleIndex();
ColorMask cm = (ColorMask)(baseMask + handleIndex);
fbmp.AddMaskRect(cm.GetColor(), GetCenterBoundsFromPoint(allPts[handleIndex]));
}
else
{
for (uint i = 0; i < 8; i++)
{
ColorMask cm = (ColorMask)(baseMask + i);
fbmp.AddMaskRect(cm.GetColor(), GetCenterBoundsFromPoint(allPts[i]));
}
if (transformKind == TransformKind.Rotate)
{
fbmp.AddMaskRect(ColorMask.CenterPoint.GetColor(), GetCenterBoundsFromPoint(allPts[8]));
}
}
}
}