Raytracing

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Next?CSE 472 Spring 201347ReflectionsHall indicated what to do with thereflection, so where does it comefrom?• Shoot more rays• Shoot a ray in the reflectiondirection and see what color you see.• The Self-Shadowing issue stillapplies!CSE 472 Spring 201348
RayColor functionYou should have a RayColor functionHere’s what mine looks like:void CRaytraceRenderer::RayColor(const CRay &p_ray, (input)CRayColor &p_color,(output)int p_recurse,(to control recursion)const CUseIntersection::Object *p_ignore) (ignore)This will call itself• We call this a recursive ray tracer• What is your stopping condition?CSE 472 Spring 201349TransmissionI’ll let you figure this one out…CSE 472 Spring 201350
Page 4 and 5: How do we get shadows?What is diffe
Page 6 and 7: Problems w/ numerical precisionCSE
Page 8 and 9: Intersect Functionbool Intersect(co
Page 10 and 11: Aliasing, aka “Jaggies”Why does
Page 12 and 13: Characteristics of the Human EyeRec
Page 14 and 15: Instead of one raythough the center
Page 16 and 17: uniform random numbersFirst idea is
Page 18 and 19: Poisson Distributions10.90.810.90.8
Page 20 and 21: Poisson is French for “Fish”CSE
Page 22 and 23: 4x AntialiasingCSE 472 Spring 20134
Page 26 and 27: Recursion issuesDon’t recurse if
Page 28 and 29: How do we solve this problem?All to
Page 30 and 31: RayColor with PenumbraCPoisson2D po
Page 32 and 33: Putting it all togetherWe have thre
Page 34 and 35: Stochastic Ray TracingProblem with
Page 36 and 37: Photon map•Photon by light-based

Raytracing

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