Difference between revisions of "Homogeneous coordinates"

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The <math>w</math> coordinate of a <tt>vec4</tt> indicates (and should be set according to) whether the <tt>vec</tt> refers to a vector or a point [https://community.khronos.org/t/glsl-why-is-gl-vertex-a-vec4/60193]:
 
The <math>w</math> coordinate of a <tt>vec4</tt> indicates (and should be set according to) whether the <tt>vec</tt> refers to a vector or a point [https://community.khronos.org/t/glsl-why-is-gl-vertex-a-vec4/60193]:
 
* <math>w = 0</math>: vector
 
* <math>w = 0</math>: vector

Revision as of 14:48, 25 February 2020

This article is currently a stub; it means I'm aware it's short and I probably intend to expand on the subject in the future!

The coordinate of a vec4 indicates (and should be set according to) whether the vec refers to a vector or a point [1]:

  • : vector
  • : point