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2 answers
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Calculate normals from vertices

Assume you have a list of vertices and their connectivity information. (I.e you can find all the adjacent edges and faces to each vertex). What is a good approach to calculate a normal from this ...
Makogan's user avatar
  • 1,831
2 votes
2 answers
2k views

Extract visible vertices from a 3D geometry model

Let's assume we have a 3D model consisted of XYZ-formatted vertices (such as point cloud model). My problem is given the position and normal of camera or camera ...
angel_30's user avatar
  • 229
7 votes
2 answers
765 views

Sampling against geometry normals

I am writing a basic raytracer and have implemented normal maps. However, when using normal maps, sometimes the rays generated are opposite to the surface's geometry normal, so that the rays are ...
anonymoose2121's user avatar