raytracing

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What can cause Phong specular shading to produce gamut overflows?

I am currently implementing a basic raytracer in c++. Works pretty well so far, matte materials (with ambient and diffuse brdf) work as expected so far.[详细]

2022-12-22 03:44 分类：问答
Given an octree of voxels, how do you render with smooth surfaces?

I noticed most 3d voxel models are actually pretty low resolution, but then are rendered all smoothed out with some sort of interpolation.[详细]

2022-12-22 02:16 分类：问答
raycasting: how to properly apply a projection matrix?

I am currently working on some raycasting in GLSL which works fine. Anyways I want to go from orthogonal projection to perspective projection now but I am not sure how to properly do so.[详细]

2022-12-21 08:25 分类：问答
Very general question about the implementation of vectors, vertices, edges, rays, lines & line segments

This is just a LARGE generalized question regarding rays (and/or line segments or edges etc) and their place in a software rendered 3d engine that is/not performing raytracing operations. I\'m learnin[详细]

2022-12-19 22:25 分类：问答
POVray: How to reliably create nice merges of objects merely touching on the surface?

What I\'m doing I have a scene which algorithmically draws a prism with a hexagonal cross-section and n layers of such prisms 开发者_如何学Gosurrounding the center one, such that all the prisms toget[详细]

2022-12-19 01:36 分类：问答
Unittest++: test for multiple possible values

i am currently implementing a simple ray tracer in c++. I have a class named OrthonormalBasis, which generates three orthogonal unit vectors from one or two specified vectors, for example:开发者_开发知[详细]

2022-12-18 05:37 分类：问答
Testing whether a line segment intersects a sphere

I am trying to determine whether a line segment (i.e. between two points) intersects a sphere. I am not interested in the position of the intersection, just whether or not the segment intersects the s[详细]

2022-12-17 10:05 分类：问答
Easiest way to create and render 3D model by rotating a 2D silhouette

I have a black and white 2D drawing of a silhouette (say, a chess piece) that I would like to rotate around an axis to create a 3D object.[详细]

2022-12-16 23:05 分类：问答
KD-Tree traversal (raytracing) - am I missing a case?

I\'m trying to traverse a 3D KD-Tree in my raytracer. The Tree is correct, but there seems to be something wrong with my traversal algorithm since I\'m getting some errors compared to using a brute-fo[详细]

2022-12-13 03:34 分类：问答
texture minification filter in raytracing?

can开发者_JS百科 someone point me to a paper/algorithm/resource/whatever that tells me how to implement a texture minification filter (applies when texels are smaller than pixels) in a raytracer?[详细]

2022-12-12 14:37 分类：问答