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Asked: 2026-05-28T05:41:05+00:00

I have a 3D scene constructed of many Model3D elements. I need to create

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I have a 3D scene constructed of many Model3D elements.

I need to create a 2D layer on top where I want to associate 2D elements with Model3D elements.
How can I calculate the 2D projected bounds of Model3D elements?

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  1. Editorial Team

    The Model3D doesn’t have that information as the projection is a property of the view/viewport.

    You can use the GeneralTransform3DTo2D Class and specifically the TransformBounds method

    This returns a 2D axis aligned box (Rect) from the 3D bounding box supplied. Pass the bounding box of your Model3D into this and it will return the projected bounds.

    So you can get this transformation the once and use it for each Model3D in your scene as appropriate.

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