/// <summary>
/// Implementation of <see cref="System.Windows.Freezable.GetCurrentValueAsFrozenCore(Freezable)">Freezable.GetCurrentValueAsFrozenCore</see>.
/// </summary>
/// <param name="sourceFreezable"></param>
protected override void GetCurrentValueAsFrozenCore(Freezable sourceFreezable)
{
GeneralTransform2DTo3D transform = (GeneralTransform2DTo3D)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)
{
GeneralTransform2DTo3D transform = (GeneralTransform2DTo3D)sourceFreezable;
base.CloneCurrentValueCore(sourceFreezable);
CopyCommon(transform);
}
internal GeneralTransform3DTo2DTo3D(GeneralTransform3DTo2D transform3DTo2D,
GeneralTransform2DTo3D transform2DTo3D)
{
Debug.Assert(transform3DTo2D != null && transform2DTo3D != null);
_transform3DTo2D = (GeneralTransform3DTo2D)transform3DTo2D.GetAsFrozen();
_transform2DTo3D = (GeneralTransform2DTo3D)transform2DTo3D.GetAsFrozen();
}
/// <summary>
/// Clones values that do not have corresponding DPs
/// </summary>
/// <param name="transform"></param>
private void CopyCommon(GeneralTransform2DTo3D transform)
{
_transform2D = transform._transform2D;
_transform3D = transform._transform3D;
_positions = transform._positions;
_textureCoords = transform._textureCoords;
_triIndices = transform._triIndices;
_childBounds = transform._childBounds;
}
/// <summary>
/// Clones values that do not have corresponding DPs
/// </summary>
/// <param name="transform"></param>
private void CopyCommon(GeneralTransform2DTo3D transform)
{
_transform2D = transform._transform2D;
_transform3D = transform._transform3D;
_positions = transform._positions;
_textureCoords = transform._textureCoords;
_triIndices = transform._triIndices;
_childBounds = transform._childBounds;
}
/// <summary>
/// Provides the transform to go from 2D to 3D.
/// </summary>
/// <param name="ancestor">Ancestor visual.</param>
/// <param name="transformTo3D">The transform to use to go to 3D</param>
internal bool TrySimpleTransformToAncestor(Visual3D ancestor,
out GeneralTransform2DTo3D transformTo3D)
{
Debug.Assert(ancestor != null);
// get the 3D object that contains this visual
// this must be a Viewport2DVisual3D since this is the only 3D class that can contain 2D content as a child
Viewport2DVisual3D containingVisual3D = VisualTreeHelper.GetContainingVisual3D(this) as Viewport2DVisual3D;
// if containingVisual3D is null then ancestor is not the ancestor
if (containingVisual3D == null)
{
throw new System.InvalidOperationException(SR.Get(SRID.Visual_NotAnAncestor));
}
GeneralTransform transform2D = this.TransformToAncestor(containingVisual3D.Visual);
GeneralTransform3D transform3D = containingVisual3D.TransformToAncestor(ancestor);
transformTo3D = new GeneralTransform2DTo3D(transform2D, containingVisual3D, transform3D);
return true;
}
