/// <summary>
/// Implementation of <see cref="System.Windows.Freezable.GetCurrentValueAsFrozenCore(Freezable)">Freezable.GetCurrentValueAsFrozenCore</see>.
/// </summary>
/// <param name="sourceFreezable"></param>
protected override void GetCurrentValueAsFrozenCore(Freezable sourceFreezable)
{
GeneralTransform3DTo2D transform = (GeneralTransform3DTo2D)sourceFreezable;
base.GetCurrentValueAsFrozenCore(sourceFreezable);
CopyCommon(transform);
}
/// <summary>
/// Implementation of <see cref="System.Windows.Freezable.CloneCurrentValueCore(Freezable)">Freezable.CloneCurrentValueCore</see>.
/// </summary>
/// <param name="sourceFreezable"></param>
protected override void CloneCurrentValueCore(Freezable sourceFreezable)
{
GeneralTransform3DTo2D transform = (GeneralTransform3DTo2D)sourceFreezable;
base.CloneCurrentValueCore(sourceFreezable);
CopyCommon(transform);
}
/// <summary>
/// Projects the stored 3D points in to 2D.
/// </summary>
/// <param name="objectToViewportTransform">The transformation matrix to use</param>
public void Project(GeneralTransform3DTo2D objectToViewportTransform)
{
Point projPoint1 = objectToViewportTransform.Transform(_p1);
Point projPoint2 = objectToViewportTransform.Transform(_p2);
_p1Transformed = new Point(projPoint1.X, projPoint1.Y);
_p2Transformed = new Point(projPoint2.X, projPoint2.Y);
}
internal GeneralTransform3DTo2DTo3D(GeneralTransform3DTo2D transform3DTo2D,
GeneralTransform2DTo3D transform2DTo3D)
{
Debug.Assert(transform3DTo2D != null && transform2DTo3D != null);
_transform3DTo2D = (GeneralTransform3DTo2D)transform3DTo2D.GetAsFrozen();
_transform2DTo3D = (GeneralTransform2DTo3D)transform2DTo3D.GetAsFrozen();
}
/// <summary>
/// Provides the transform between this visual3D and the specified ancestor, or null
/// if the transform does not exist.
///
/// </summary>
/// <param name="ancestor">Ancestor visual.</param>
/// <returns>The transform from 3D to 2D</returns>
internal GeneralTransform3DTo2D InternalTransformToAncestor(Visual ancestor)
{
Debug.Assert(ancestor != null);
// get the transform out of 3D and in to 2D
Viewport3DVisual containingViewport;
Matrix3D projectionTransform;
if (!M3DUtil.TryTransformToViewport3DVisual(this, out containingViewport, out projectionTransform))
{
return null;
}
// get the transform from the Viewport3DVisual to the ancestor
GeneralTransform transformIn2D = containingViewport.TransformToAncestor(ancestor);
// package the two up in the transformTo2D
GeneralTransform3DTo2D result = new GeneralTransform3DTo2D(projectionTransform, transformIn2D);
result.Freeze();
return result;
}
/// <summary>
/// Clones values that do not have corresponding DPs
/// </summary>
/// <param name="transform"></param>
private void CopyCommon(GeneralTransform3DTo2D transform)
{
_projectionTransform = transform._projectionTransform;
_transformBetween2D = transform._transformBetween2D;
}
/// <summary>
/// Clones values that do not have corresponding DPs
/// </summary>
/// <param name="transform"></param>
private void CopyCommon(GeneralTransform3DTo2D transform)
{
_projectionTransform = transform._projectionTransform;
_transformBetween2D = transform._transformBetween2D;
}
