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Ray tracing (graphics) - Wikipedia
https://en.wikipedia.org/wiki/Ray_tracing_(graphics)#:~:text=This%20recursive%20ray%20tracing%20of%20reflective%20colored%20spheres,variety%20of%20rendering%20algorithms%20for%20generating%20digital%20images.
graphics - Area Lighting In Ray Tracing - Stack Overflow
https://stackoverflow.com/questions/11953825/area-lighting-in-ray-tracing
Area Light's get_direction function: virtual Vec get_direction(ShadeRec& sr) { Vec newLocation; newLocation.x = position.x + …
Area Lights in Path Tracing - Computer Graphics Stack …
https://computergraphics.stackexchange.com/questions/4341/area-lights-in-path-tracing
The simple answer is this: Area lights are just geometry which have an emissive value. To add support for emissive values to path tracing is pretty easy luckily. As you know, the amount of …
ray tracing: horizontal artifacts with Area lights - Stack …
https://stackoverflow.com/questions/19980778/ray-tracing-horizontal-artifacts-with-area-lights
The area light is the yellow square above the green plane. The pattern of lines changes depending on the distance of area light above the plane but they are still horizontal …
Introduction to Computer Graphics, Section 8.1 -- Ray …
https://math.hws.edu/graphicsbook/c8/s1.html
Ray tracing uses shadow rays to tell whether a light source illuminates an object. But a shadow ray is cast in only one direction, and can only hit one point on an area light. To implement area …
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