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heathcliff17

Selecting an object

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I am trying to select an object within my program using a mouse click. However when I click on the object, it does not get selected ... instead the entire screen flashes ... any ideas? Peace, Love and Rabid Chipmunks - B :-P

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ummm .... when I change glRenderMode(GL_RENDER); to glRenderMode(GL_SELECT); it causes the entire image to dissapear and stay gone.

is there any way that I could select an object either using a glutmouse function or something else rather than using a selection buffer?

[edited by - heathcliff17 on December 15, 2003 5:22:55 PM]

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You''ll get better framerate if you don''t use GL_SELECT. When you click on a point on the screen, you''re actually clicking on a whole line between the front of the frustum and the back of the frustum. You can calculate this line using gluUnProject to get the points, then just loop through the objects that could potentially be selected and use line-triangle or line-polygon collision.

I have a demo on my site that allows an object to be dragged in this manner.

Love means nothing to a tennis player

My nothing-to-write-home-about OpenGL webpage. (please pardon the popups!)

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