capturing images

[Rajveer]

If I've drawn an openGL scene, is there some way I can capture the scene to a bitmap file? I need to do certain area, lengh and radius of curvature calculations from my scene and openGL doesn't support this

[Bob]

Use glReadPixels to read the framebuffer, and then use your own, or some third-pary, function to save it.

[rts]

http://www.opengl.org/discussion_boards/ubb/Forum4/HTML/000182.html