static Win2D.CanvasGeometryCombine Win2dCanvasGeometryCombine(Wcd.Mgcg.CanvasGeometryCombine combine)
{
switch (combine)
{
case Wcd.Mgcg.CanvasGeometryCombine.Union:
return(Win2D.CanvasGeometryCombine.Union);
case Wcd.Mgcg.CanvasGeometryCombine.Exclude:
return(Win2D.CanvasGeometryCombine.Exclude);
case Wcd.Mgcg.CanvasGeometryCombine.Intersect:
return(Win2D.CanvasGeometryCombine.Intersect);
case Wcd.Mgcg.CanvasGeometryCombine.Xor:
return(Win2D.CanvasGeometryCombine.Xor);
default:
throw new InvalidOperationException();
}
}
internal static Wcd.Mgcg.CanvasGeometry CombineGeometries(Wcd.Mgcg.CanvasGeometry[] geometries, Wcd.Mgcg.CanvasGeometryCombine combineMode)
{
// Convert the geometries to Win2D geometries.
var win2dGeometry = CombineWin2DGeometries(geometries.Select(ToWin2dCanvasGeometry).ToArray(), Win2dCanvasGeometryCombine(combineMode));
// Convert to a Win2D path.
var builder = new CpBuilder();
win2dGeometry.SendPathTo(builder);
// Convert back to a CanvasGeometry.
return(builder.ToCanvasGeometry());
}