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quick raytracing question

Started by digitec devil May 3, 2004 at 9:14 PM 2 replies 500+ views

Original Post

May 3, 2004 at 9:14 PM

I was curious, once I have my projection plane and the directions of the rays which will be tested for intersection, should the starting point of the rays be on the projection plane, essentially clipping everything between the eye and the plane?

ApochPiQ

1,378

ApochPiQ

May 3, 2004 at 9:23 PM

That''s up to you, really. I personally don''t like the near-clipping-plane phenomenon so I project rays from the camera, and that also makes it easier to apply camera transformations to the individual eye rays, but the decision is really arbitrary.

digitec devil

Author

digitec devil

May 3, 2004 at 9:28 PM

Thanks.

Max_Payne

May 3, 2004 at 10:43 PM

There is no point at all in doing that. It would actually make your life more complicated... The near plane distance would be another parameter you would have to set for each rendering. Plus the whole concept of a near clipping distance does not make much sense in a raytracer, its a rasterization thing.

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[edited by - Max_Payne on May 3, 2004 11:43:41 PM]

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