How is selection/picking supposed to work in Direct2D?
Pergunta
I want to move my C# application from GDI+ to Direct2D (C++/CLI wrapper) for performance reasons. However I don't know how to solve the picking part. I have some shapes and images that I can move around. Currently I do it with GraphicsPath.IsVisible most of the time. Do you know what would be the equivalent in Direct2D?
Solução
The FillContainsPoint
or StrokeContainsPoint
methods of shapes implementing ID2D1Geometry
might work for you:
- FillContainsPoint - Indicates whether the area filled by the geometry would contain the specified point.
- StrokeContainsPoint - Determines whether the geometry's stroke contains the specified point.
I found these from the Geometries Overview on MSDN.
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