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Calin

DirectX Picking

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I have a question: Does DirectX have any similar function to OpenGL Picking (GL_SELECT)?

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I do not believe so, but it is not hard to implement.

Create a ray from a pixel, transform it by the inverse of (world*view) matrix, and then cast the ray, the first intersected objected is the one you want.

Sounds easy, but it requires:

- Having a linear algebra library
- Having some kind of graphics engine with matrices stored
- Having ray/object intersection implemented

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