bytev-charts/lib/plugin/three.js/examples/jsm/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";
import { ShaderMaterial, UniformsUtils } from "../../../build/three.module.js";
import { Pass } from "../postprocessing/Pass.js";
import { FilmShader } from "../shaders/FilmShader.js";

var FilmPass = function FilmPass(noiseIntensity, scanlinesIntensity, scanlinesCount, grayscale) {
  Pass.call(this);
  if (FilmShader === undefined) console.error("FilmPass relies on FilmShader");
  var shader = FilmShader;
  this.uniforms = UniformsUtils.clone(shader.uniforms);
  this.material = new 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 Pass.FullScreenQuad(this.material);
};

FilmPass.prototype = _Object$assign(_Object$create(Pass.prototype), {
  constructor: 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);
    }
  }
});
export { FilmPass };