bytev-charts-beta/lib/plugin/three.js/examples/js/postprocessing/TexturePass.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";
import "core-js/modules/es.array.map.js";
console.warn("THREE.TexturePass: 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.TexturePass = function (map, opacity) {
  THREE.Pass.call(this);
  if (THREE.CopyShader === undefined) console.error("THREE.TexturePass relies on THREE.CopyShader");
  var shader = THREE.CopyShader;
  this.map = map;
  this.opacity = opacity !== undefined ? opacity : 1.0;
  this.uniforms = THREE.UniformsUtils.clone(shader.uniforms);
  this.material = new THREE.ShaderMaterial({
    uniforms: this.uniforms,
    vertexShader: shader.vertexShader,
    fragmentShader: shader.fragmentShader,
    depthTest: false,
    depthWrite: false
  });
  this.needsSwap = false;
  this.fsQuad = new THREE.Pass.FullScreenQuad(null);
};

THREE.TexturePass.prototype = _Object$assign(_Object$create(THREE.Pass.prototype), {
  constructor: THREE.TexturePass,
  render: function render(renderer, writeBuffer, readBuffer
  /*, deltaTime, maskActive */
  ) {
    var oldAutoClear = renderer.autoClear;
    renderer.autoClear = false;
    this.fsQuad.material = this.material;
    this.uniforms["opacity"].value = this.opacity;
    this.uniforms["tDiffuse"].value = this.map;
    this.material.transparent = this.opacity < 1.0;
    renderer.setRenderTarget(this.renderToScreen ? null : readBuffer);
    if (this.clear) renderer.clear();
    this.fsQuad.render(renderer);
    renderer.autoClear = oldAutoClear;
  }
});