Cesium-Prequel/Specs/createScene.js

import { Cartesian2 } from "../Source/Cesium.js";
import { clone } from "../Source/Cesium.js";
import { defaultValue } from "../Source/Cesium.js";
import { defined } from "../Source/Cesium.js";
import { Scene } from "../Source/Cesium.js";
import createCanvas from "./createCanvas.js";
import getWebGLStub from "./getWebGLStub.js";

function createScene(options) {
  options = defaultValue(options, {});

  // save the canvas so we don't try to clone an HTMLCanvasElement
  var canvas = defined(options.canvas) ? options.canvas : createCanvas();
  options.canvas = undefined;

  options = clone(options, true);

  options.canvas = canvas;
  options.contextOptions = defaultValue(options.contextOptions, {});

  var contextOptions = options.contextOptions;
  contextOptions.webgl = defaultValue(contextOptions.webgl, {});
  contextOptions.webgl.antialias = defaultValue(
    contextOptions.webgl.antialias,
    false
  );
  contextOptions.webgl.stencil = defaultValue(
    contextOptions.webgl.stencil,
    true
  );
  if (!!window.webglStub) {
    contextOptions.getWebGLStub = getWebGLStub;
  }

  var scene = new Scene(options);
  scene.highDynamicRange = false;

  if (!!window.webglValidation) {
    var context = scene.context;
    context.validateShaderProgram = true;
    context.validateFramebuffer = true;
    context.logShaderCompilation = true;
    context.throwOnWebGLError = true;
  }

  // Add functions for test
  scene.destroyForSpecs = function () {
    var canvas = this.canvas;
    this.destroy();
    document.body.removeChild(canvas);
  };

  scene.renderForSpecs = function (time) {
    this.initializeFrame();
    this.render(time);
  };

  scene.pickForSpecs = function () {
    this.pick(new Cartesian2(0, 0));
  };

  scene.rethrowRenderErrors = defaultValue(options.rethrowRenderErrors, true);

  return scene;
}
export default createScene;