game-shell-orbit-camera

Attaches an orbit-camera to a game-shell with default key bindings

npm install game-shell-orbit-camera
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game-shell-orbit-camera

Creates a default orbit camera controller for a game-shell instance. The controls for this are as follows:

  • Rotate - Left click
  • Pan - Right click or Control + Left click
  • Zoom - Scroll or Shift + Left click

Example

"use strict"

var shell = require("gl-now")()
var createMesh = require("gl-mesh")
var simple3DShader = require("simple-3d-shader")
var attachCamera = require("game-shell-orbit-camera")
var glm = require("gl-matrix")
var mat4 = glm.mat4

var shader, mesh
var camera = attachCamera(shell)

camera.lookAt([0, 3, 20], [0, 3, 0], [0, 1, 0])

shell.on("gl-init", function() {
  shader = simple3DShader(shell.gl)
  mesh = createMesh(shell.gl, require("bunny"))
})

shell.on("gl-render", function(t) {
  //Bind shader
  shader.bind()

  //Set camera parameters
  var scratch = mat4.create()
  shader.uniforms.model = scratch
  shader.uniforms.projection = mat4.perspective(scratch, Math.PI/4.0, shell.width/shell.height, 0.1, 1000.0)
  shader.uniforms.view = camera.view(scratch)

  //Draw object
  mesh.bind(shader)
  mesh.draw()
  mesh.unbind()
})

Install

npm install game-shell-orbit-camera

require("game-shell-orbit-camera")(shell)

Attaches a camera to the game-shell instance

Returns An instance of orbit-camera

Credits

(c) 2013 Mikola Lysenko. MIT License

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