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On 09/11/2004 at 06:21, xxxxxxxx wrote:
Cinema 4D Version: 8.500
Platform: Windows ;
Language(s) : C++ ;
I am working on a shader. For a given shading-point i need a list of all ray-intersctions between the shading-point and the camera.
First i thought the VolumeData would provide the data for the ray that caused the call of the output-function, but i was wrong.
The only solution seems to be the TraceGeometry-function of the VolumeData. But this means shooting a ray, that has already been shot by the raytracer itself. The raytracer needs to compute those intersections, and my shader would compute them again?
Ok, let's say i accept this additional computations and i use traceGeometry.
TraceGeometry seems to return only one intersection, not all intersections. And from the description in the SDK i can not say which intersections this would be. The first one i would guess!?
I would have to uses the function several times, until i found all intersections between the shading-point and the camera.
Does anyone know a better solution?