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Github首页地球学习(2)-光源

接上一篇:

最终效果:

代码:

export default function getGlowLight() {
     const cl = 25;  const mat = new THREE.ShaderMaterial({
       uniforms: {
         c: {
           type: "f",        value: 0.7,      },      p: {
           type: "f",        value: 15,      },      glowColor: {
           type: "c",        value: new THREE.Color(0x1c2462),      },      viewVector: {
           type: "v3",        value: new THREE.Vector3(0, 0, 220),      },    },    vertexShader: `      #define GLSLIFY 1      uniform vec3 viewVector;      uniform float c;      uniform float p;      varying float intensity;      void main()      {          vec3 vNormal = normalize( normalMatrix * normal );          vec3 vNormel = normalize( normalMatrix * viewVector );          intensity = pow( c - dot(vNormal, vNormel), p );          gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );      }`,    fragmentShader: `      #define GLSLIFY 1      uniform vec3 glowColor;      varying float intensity;      void main()      {          vec3 glow = glowColor * intensity;          gl_FragColor = vec4( glow, 1.0 );      }`,    side: 1,    blending: 2,    transparent: !0,  });  const s = new THREE.Mesh(new THREE.SphereBufferGeometry(cl, 45, 45), mat);  s.name = "GlowLight";  s.scale.multiplyScalar(1.15);  s.rotateX(0.03 * Math.PI);  s.rotateY(0.03 * Math.PI);  return s;}

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