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Marius

camera-mouse-plane

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I do have camera position defined by eye, at, up vectors. I do have the near plane, and field of view. I do have severals polygons in 3d world I would like to find out the intersction point from a ray defined by (eye pos, mouse pointer) and a polygon in 3d scene. * Is easy if I use the center of screen, The rayOrigin is camera pos, and the ray direction is camera::lookat-camera::eye. Then I do the whatever plane intersection to this ray. But... I do not know how get the ray direction at the mouse cursor click. Thank you.

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