pex-cam

Camera models and controllers.

API

Perspective Camera

var createPerspectiveCamera = require('pex-cam/perspective')

cam = createPerspectiveCamera(opts)

Creates new perspective camera

• opts: object with one or more of the following options
  • position: vec3 - camera position, [0, 0, 3]
  • target: vec3 - camera target, [0, 0, 0]
  • up: vec3 - camera up direction, [0, 1, 0]
  • fov: Number - vertical field of view, PI/3 (60 deg)
  • aspect: Number - aspect ratio , 1
  • near: Number - near clipping plane, 0.1
  • far: Number - far clipping plane, 100

cam.set(opts)

• opts: see createPerspectiveCamera

cam.getViewRay(x, y, windowWidth, windowHeight)

Create picking ray in view (camera) cooridinates

• x: Number - mouse x
• y: Number - mouse y
• windowWidth: Number
• windowHeight: Number

cam.getWorldRay(x, y, windowWidth, windowHeight)

Create picking ray in world coordinates

• x: Number - mouse x
• y: Number - mouse y
• windowWidth: Number
• windowHeight: Number

Orbiter

Orbiter controller

var createOrbiter = require('pex-cam/orbiter')

orbiter = createOrbiter(opts)

Creates new orbiter controller

• opts: object with one or more of the following options
  • camera: PerspectiveCamera - camera to be controlled
  • element: DOM Element - mouse events target, window
  • easing: Number, amount of intertia, 0
  • drag: Boolean - enable drag rotation, true
  • zoom: Boolean - enable mouse wheel zooming, true
  • pan: Boolean - enable shift + drag panning, true
  • lat: Number - latitude of the orbiter position, defaults to camera.position
  • lon: Number - longitude of the orbiter position, defaults to camera.position

orbiter.set(opts)

• opts: see createOrbiter

License

MIT, see LICENSE.md for details.