Function createScene

stackgl_modules/index.js:18460–19192

(options)

}

function createScene(options) {
  options = options || {}
  options.camera = options.camera || {}

  var canvas = options.canvas
  if(!canvas) {
    canvas = document.createElement('canvas')
    if(options.container) {
      var container = options.container
      container.appendChild(canvas)
    } else {
      document.body.appendChild(canvas)
    }
  }

  var gl = options.gl
  if(!gl) {
    if(options.glOptions) {
      isMobile = !!options.glOptions.preserveDrawingBuffer
    }

    gl = getContext(canvas,
      options.glOptions || {
        premultipliedAlpha: true,
        antialias: true,
        preserveDrawingBuffer: isMobile
      })
  }
  if(!gl) {
    throw new Error('webgl not supported')
  }

  //Initial bounds
  var bounds = options.bounds || [[-10,-10,-10], [10,10,10]]

  //Create selection
  var selection = new MouseSelect()

  //Accumulation buffer
  var accumBuffer = createFBO(gl,
    gl.drawingBufferWidth, gl.drawingBufferHeight, {
      preferFloat: !isMobile
    })

  var accumShader = createShader(gl)

  var isOrtho =
    (options.cameraObject && options.cameraObject._ortho === true) ||
    (options.camera.projection && options.camera.projection.type === 'orthographic') ||
    false

  //Create a camera
  var cameraOptions = {
    eye:     options.camera.eye     || [2,0,0],
    center:  options.camera.center  || [0,0,0],
    up:      options.camera.up      || [0,1,0],
    zoomMin: options.camera.zoomMax || 0.1,
    zoomMax: options.camera.zoomMin || 100,