bytev-charts-beta/lib/plugin/three.js/examples/js/postprocessing/DotScreenPass.js

基于echarts和JavaScript及ES6封装的一个可以直接调用的图表组件库，内置主题设计，简单快捷，且支持用户自定义配置； npm 安装方式: npm install bytev-charts 若启动提示还需额外install插件,则运行 npm install @babel/runtime-corejs2 即可;

import _Object$assign from "@babel/runtime-corejs2/core-js/object/assign";
import _Object$create from "@babel/runtime-corejs2/core-js/object/create";
console.warn("THREE.DotScreenPass: As part of the transition to ES6 Modules, the files in 'examples/js' were deprecated in May 2020 (r117) and will be deleted in December 2020 (r124). You can find more information about developing using ES6 Modules in https://threejs.org/docs/#manual/en/introduction/Installation.");

THREE.DotScreenPass = function (center, angle, scale) {
  THREE.Pass.call(this);
  if (THREE.DotScreenShader === undefined) console.error("THREE.DotScreenPass relies on THREE.DotScreenShader");
  var shader = THREE.DotScreenShader;
  this.uniforms = THREE.UniformsUtils.clone(shader.uniforms);
  if (center !== undefined) this.uniforms["center"].value.copy(center);
  if (angle !== undefined) this.uniforms["angle"].value = angle;
  if (scale !== undefined) this.uniforms["scale"].value = scale;
  this.material = new THREE.ShaderMaterial({
    uniforms: this.uniforms,
    vertexShader: shader.vertexShader,
    fragmentShader: shader.fragmentShader
  });
  this.fsQuad = new THREE.Pass.FullScreenQuad(this.material);
};

THREE.DotScreenPass.prototype = _Object$assign(_Object$create(THREE.Pass.prototype), {
  constructor: THREE.DotScreenPass,
  render: function render(renderer, writeBuffer, readBuffer
  /*, deltaTime, maskActive */
  ) {
    this.uniforms["tDiffuse"].value = readBuffer.texture;
    this.uniforms["tSize"].value.set(readBuffer.width, readBuffer.height);

    if (this.renderToScreen) {
      renderer.setRenderTarget(null);
      this.fsQuad.render(renderer);
    } else {
      renderer.setRenderTarget(writeBuffer);
      if (this.clear) renderer.clear();
      this.fsQuad.render(renderer);
    }
  }
});