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c++ - Ray Tracing - Reflection - Stack Overflow
https://stackoverflow.com/questions/22191070/ray-tracing-reflection
traceRay(Ray ray, int counter){ // look through the intersection between ray and list of objects // find the final index aka the winning index, (if final index == -1, return background color) // then calculate the intersection point // perform reflection calculation here if(counter > 1 && winning object's reflectivity > 1 ){ //get the intersection normal, vector N //Calculate the …
Simple Ray Tracing in C# Part III (Reflection) - CodeProject
https://www.codeproject.com/articles/19928/simple-ray-tracing-in-c-part-iii-reflection
Ray tracing in C# part III - implementing reflection. Download source. Download binaries. recursivity level = 10. recursivity level = 2. Center Sphere alpha = 0.2 ( simulating glass refraction ) Other Spheres have alpha = 1.0 (simulating only reflection)
Ray Tracing - University of Washington
https://courses.cs.washington.edu/courses/csep557/19sp/assets/lectures/ray-tracing-1pp.pdf
Ray-tracing pseudocode, revisited functiontraceRay(scene, P, d): (t Ç, N, mtrl) ¬scene.intersect(P, d) Qßray (P, d) evaluated at t Ç I= shade (scene, mtrl, Q, N, d) R= reflectDirection(N, d) I ¬I+ mtrl.k s*traceRay(scene, Q, R) ifray is entering object then hi= index_of_air(=1.0003) h t= mtrl.index else hi= mtrl.index ht= index_of_air(=1.0003)
Introduction to Ray Tracing: a Simple Method for Creating ...
https://www.scratchapixel.com/lessons/3d-basic-rendering/introduction-to-ray-tracing/adding-reflection-and-refraction
Compute the reflection color, compute the refraction color, and then apply the Fresnel equation. First we compute the reflection direction. For that we need two items: the normal at the point of intersection and the primary ray's direction. Once we obtain the reflection direction, we shoot a new ray in that direction.
Ray-Traced Reflections | High Definition RP | 7.1.8
https://docs.unity3d.com/Packages/[email protected]/manual/Ray-Traced-Reflections.html
Ray-Traced Reflections. Ray-Traced Reflections is a ray tracing feature in the High Definition Render Pipeline (HDRP). It is an alternative, more accurate, ray-traced solution to Screen Space Reflection that can make use of off screen data. Screen-space reflections. Ray-traced reflections
c++ - Refraction in Raytracing? - Stack Overflow
https://stackoverflow.com/questions/26087106/refraction-in-raytracing
And the reflection calculation: Ray Sphere::calcReflectingRay (const Ray &r, const Vector &intersection, const Vector &normal)const { Vector rdir = r.getDirection (); Vector dir = rdir - 2 * (rdir|normal) * normal; return Ray (intersection + dir*BIAS, dir); //the Ray constructor automatically normalizes directions }
Reflections and Refractions in Ray Tracing
https://graphics.stanford.edu/courses/cs148-10-summer/docs/2006--degreve--reflection_refraction.pdf
The calculation of the refracted ray starts with Snell’s law [1] which tellsthatthe products of therefractiveindices and sines of the angles must be equal: η 1sinθ i = η 2sinθ t (15) You can write this as: sinθ t = η 1 η 2 sinθ i (16) Withthis equation, you can already see there’s a bit of a prob-lem when sinθ 1 > η2 η1. If that’s the case, sinθ
RayTracing – Adding Reflection and Refraction – Cheney …
https://cheneyshen.com/raytracing-adding-reflection-and-refraction/
First we compute the reflection direction. For that we need two items: the normal at the point of intersection and the primary ray’s direction. Once we obtain the reflection direction, we shoot a new ray in that direction. Going back to our old example, let’s say the reflection ray hits the red sphere.
Ray Tracing Algorithm - Virginia Tech
https://people.cs.vt.edu/yongcao/teaching/csx984/fall2011/documents/Lecture4_RayTracing_Algorithm.pdf
Ray Tracing Algorithm. Copyright © 2010 by Yong Cao. For each pixel construct a ray: eye pixel. raytrace( ray ) P = closest intersection color_local = ShadowRay(light1, P)+… + ShadowRay(lightN, P) color_reflect = raytrace(reflected_ray ) color_refract = raytrace(refracted_ray ) color = color_local + k. re.
c++ - Reflection bug raytracing - Stack Overflow
https://stackoverflow.com/questions/70628137/reflection-bug-raytracing
I have two metallic surfaces that reflect each other but the last object added to the vector always has a strange reflection. This seems to be remedied if I put a break after current.hit = true but I don't understand why this fixes things. Vec3 Ray_Tracer (ray& r, std::vector<Hittable*>& object, std::vector<Vec3>& Frame, int Depth, int object ...
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