Top "Normals" questions

In geometry, an object such as a line or vector is called a normal to another object if they are orthogonal to each other.

Calculating normals in a triangle mesh

I have drawn a triangle mesh with 10000 vertices(100x100) and it will be a grass ground. I used gldrawelements() for …

c++ opengl computational-geometry normals
What is a normal in OpenGL?

I heard that I should use normals instead of colors, because colors are deprecated. (Is that true?) Normals have something …

opengl colors light normals
Calculate surface normals from depth image using neighboring pixels cross product

As the title says I want to calculate the surface normals of a given depth image by using the cross …

c++ opencv depth normals cross-product
How to find the normal vector at a point on a curve in MatLab

I have a curve and I want to find the normal vector at a given point on this curve, later …

matlab gradient curve normals
How to interpolate vertex normals?

I am trying to render a 3D model (from volvis.org) with Gouraud shading using the marching cubes algorithm. So …

opengl interpolation normals marching-cubes
OpenGL - How to calculate normals in a terrain height grid?

My approach is to calculate two tangent vectors parallel to axis X and Y respectively. Then calculate the cross product …

performance opengl grid terrain normals
Rotate Normals in Shader

I have a scene with several models with individual positions and rotations. Given normals, the shaders apply simple bidirectional lighting …

glsl shader lighting vertex-shader normals
Flip normals in three.js on sphere

I have been searching around and haven't found any really good answer to my question yet.. The thing is that …

three.js flip normals
Trying to calculate the slope of a plane from a normal

I have a set of 3D normal vectors for points on a 3D mesh, and I need to calculate the …

vector angle normals plane
How can I add a normal to a text mesh so that it lights correctly?

I'm using a text mesh to place text on a 3D object, but as you all know, the text mesh …

unity3d lighting normals