bytev-charts/lib/plugin/three.js/examples/js/postprocessing/FilmPass.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.FilmPass: 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.FilmPass = function (noiseIntensity, scanlinesIntensity, scanlinesCount, grayscale) {
  THREE.Pass.call(this);
  if (THREE.FilmShader === undefined) console.error("THREE.FilmPass relies on THREE.FilmShader");
  var shader = THREE.FilmShader;
  this.uniforms = THREE.UniformsUtils.clone(shader.uniforms);
  this.material = new THREE.ShaderMaterial({
    uniforms: this.uniforms,
    vertexShader: shader.vertexShader,
    fragmentShader: shader.fragmentShader
  });
  if (grayscale !== undefined) this.uniforms.grayscale.value = grayscale;
  if (noiseIntensity !== undefined) this.uniforms.nIntensity.value = noiseIntensity;
  if (scanlinesIntensity !== undefined) this.uniforms.sIntensity.value = scanlinesIntensity;
  if (scanlinesCount !== undefined) this.uniforms.sCount.value = scanlinesCount;
  this.fsQuad = new THREE.Pass.FullScreenQuad(this.material);
};

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

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