extract-frustum-planes

Returns a list of frustum planes from a given WebGL matrix (assuming the matrix is stored in the same format as used by gl-matrix).

Install

npm install extract-frustum-planes

Example

var getPlanes = require("extract-frustum-planes")
 
var glm = require("gl-matrix")
var m = glm.mat4.perspective()

API

require("extract-frustum-planes")(worldToClip[, zNear, zFar])

Extracts the frustum planes of the combined world to clip coordinate matrix for WebGL

• worldToClip is the concatenated model-view-projection matrix in the same format as expected by WebGL (ie compatible with gl-matrix)
• zNear is the near clip plane distance as set by gl.depthRange (default 0.0)
• zFar is the far clip plane distance as set by gl.depthRange

Returns An array of 6 planes encoding the view frustum stored in the order:

• left
• right
• top
• bottom
• near
• far

Credits

(c) 2013 Mikola Lysenko. MIT License