internal static bool HitTest(Vector3D srcPoint, Rectangle3D srcRectangle, SpatialTransform3D transform)
{
// Semi principal axes
var a = srcRectangle.Width / 2;
var b = srcRectangle.Height / 2;
var c = srcRectangle.Depth / 2;
// Center of ellipse
var x1 = srcRectangle.Left + a;
var y1 = srcRectangle.Top + b;
var z1 = srcRectangle.Front + c;
return(Math.Abs(ComputePointEllipsoidAltitude(a, b, c, new Vector3D(x1, y1, z1), srcPoint)) - 1 <= HitTestDistance / transform.CumulativeScale);
}
/// <summary>
/// Cloning constructor.
/// </summary>
/// <param name="source">The source object from which to clone.</param>
/// <param name="context">The cloning context object.</param>
protected SpatialTransform3D(SpatialTransform3D source, ICloningContext context)
{
context.CloneFields(source, this);
_centerOfRotation = source._centerOfRotation ?? Vector3D.Null;
if (source._rotation != null)
{
_rotation = source._rotation.Clone();
}
if (source._cumulativeTransform != null)
{
_cumulativeTransform = source._cumulativeTransform.Clone();
}
if (source._transform != null)
{
_transform = source._transform.Clone();
}
}