3D Glasses and Blitz
Blitz3D Forums/Blitz3D Beginners Area/3D Glasses and Blitz
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| I recently saw a 3D medical application (written in C+ via OpenGL) projected onto a big screen. I understand that the projector offset the image slightly so that when the image was viewed with 3D glasses an illusion of depth was created. What I would like to know is- is this effect achieved just by the projector, or does the 'depth' present in the scene need to be 'defined' within the 3D engine (or perhaps before in eg 3DS Max). Surely it cant just be achieved by the projector, as there must be some indication of how to handle the z axis to define what objects are in the foreground & which are in the background? Cheers, Shawnus |
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| The 3D effect is automatic regardless of the depth of anything; however, adding perceived depth obviously makes things a bit more dramatic. You can do this sort of thing in Blitz3D - I think there are some examples in the code archives. I've done wireframe 3D in Blitz3D - works a treat. |
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| 3D glasses use stereography: http://en.wikipedia.org/wiki/Stereoscopy Depending on which system is used, the depth information is presented in the 3D engine. The scene is rendered from two different viewpoints. Alternating when using shutterglasses: http://en.wikipedia.org/wiki/LCD_shutter_glasses or at the same time when using anaglyph glasses: http://en.wikipedia.org/wiki/Anaglyph_image NVidea has stereo drivers, I've used them and they were easy to use. They can make any Direct3D application stereographic: http://www.stereo3d.com/nvidia.htm |
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| Here is another option to tinker with although it is more complex. There are even some Blitz3D examples. http://www.geowall.org/ |
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| guys, thanks for this |
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