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Introduction to Computer Graphics, Section 8.1 -- Ray Tracing
https://math.hws.edu/graphicsbook/c8/s1.html#:~:text=The%20improved%20algorithm%20is%20called%20ray%20tracing.%20Consider,light%20from%20a%20light%20source%20towards%20the%20viewer.
Specular reflection - Wikipedia
https://en.wikipedia.org/wiki/Specular_reflection
Raytracing Reflection, Refraction, Fresnel, Total Internal ...
https://blog.demofox.org/2017/01/09/raytracing-reflection-refraction-fresnel-total-internal-reflection-and-beers-law/
If specular reflection is how mirrors reflect, and diffuse reflection is how regular diffuse surfaces work, then you might wonder what specular lighting is all about. A specular highlight is actually just a cheap approximation to doing a mirror like specular reflection of a light source, so it is a cheap kind of specular reflection. Let’s talk about how to do real mirror like …
Introduction to Computer Graphics, Section 8.1 -- Ray …
https://math.hws.edu/graphicsbook/c8/s1.html
8.1.2 Recursive Ray Tracing. Basic ray casting can be used to compute OpenGL-style rendering and, with the addition of shadow rays, to implement shadows as well. More features can be implemented by casting a few more rays. The …
Ray Tracing - Carnegie Mellon University
http://graphics.cs.cmu.edu/nsp/course/15-462/Spring04/slides/13-ray.pdf
Recursive Ray Tracing • Calculate specular component – Reflect ray from eye on specular surface – Transmit ray from eye through transparent surface • Determine color of incoming ray by recursion • Trace to fixed depth • Cut off if contribution below threshold Angle of Reflection • Recall: incoming angle = outgoing angle • r = 2(l d n) n – l
Ray tracing tutorial - section 7: specular highlights ...
https://www.groovyvis.com/other/raytracing/specular.html
So, s = L · R, where s = specular, L = the ray from the intersection to the light and R = the reflected ray. Negative Values of s indicate that no light is reflected. Now we raise the specular component to an exponent that represents how shiny the …
Reflection vs Scattering in Ray-Tracing | RAYmaps
https://www.raymaps.com/index.php/reflection-vs-scattering-in-ray-tracing/
The simulation code above considers that a ray travels unobstructed for 100 m and at this point comes in contact with an object and is reflected (reflection coefficient of 0.5 is assumed) or scattered. The ray then again travels for another 100 m without coming in contact with an object.
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)
How to simulate specular reflection in Light Tracing?
https://computergraphics.stackexchange.com/questions/5585/how-to-simulate-specular-reflection-in-light-tracing
$\begingroup$ Yes it is forward ray tracing as opposed to backward ray tracing. It traces importance, rather than radiance, from the light source, ... If that is making sense, if wanting to go beyond mirror like specular reflection, you could use eg a microfacet specular BRDF instead later. $\endgroup$ – Alan Wolfe.
Raytracing - how to combine diffuse and specular color?
https://stackoverflow.com/questions/15619830/raytracing-how-to-combine-diffuse-and-specular-color
This has long been an issue with the "specular + diffuse + ambient" model of illumination. Namely, it is a hack and therefore, has no guarantee of correctness. If you're so keen on cementing your fundamentals first, take a look at the excellent book "Physically Based Ray Tracing" by Matt Pharr and Greg Humphreys.
Physics Tutorial: Specular vs. Diffuse Reflection
https://www.physicsclassroom.com/class/refln/Lesson-1/Specular-vs-Diffuse-Reflection
Rays of light from the beam of an oncoming car hit this smooth surface, undergo specular reflection and remain concentrated in a beam. The driver perceives an annoying glare caused by this concentrated beam of reflected light. A second application of the distinction between diffuse and specular reflection pertains to the field of photography.
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