JSPM

camera-project

1.0.2
  • ESM via JSPM
  • ES Module Entrypoint
  • Export Map
  • Keywords
  • License
  • Repository URL
  • TypeScript Types
  • README
  • Created
  • Published
  • Downloads 143
  • Score
    100M100P100Q83301F
  • License MIT

project 3D point into 2D window space

Package Exports

  • camera-project

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (camera-project) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

camera-project

stable

Projects a 3D world point into 2D window space. 

var mat4 = require('gl-mat4')
var project = require('camera-project')

//projection * view matrix
var combinedProjView = mat4.multiply([], projection, view)

//viewport bounds
var viewport = [x, y, width, height]

//3D world point
var point = [0, -1, 2.5]

//vec4 output
var output = []

project(output, point, viewport, combinedProjView)

The output z component contains the window space depth, and w is the value of (1 / clip.w). Assumes depth range is 0 to 1.

Usage

NPM

vec4 = project(out, point, viewport, combined)

Projects the 3D point into window space using the viewport bounds (screen x, y, width, height) and combined matrix (result of multiplying projection * view matrices).

The result is stored in out and returned.

See Also

License

MIT, see LICENSE.md for details.