three实现三维带卫星的宇宙行星天体效果代码-html代码-BFW代码库

代码语言：html

所属分类：三维

代码描述：three实现三维带卫星的宇宙行星天体效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">

  
  
<style>
canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}
</style>

  
  
</head>

<body translate="no">
  
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.143.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/dat.gui-min.js"></script>

      <script >
const fovTmp = new THREE.Vector4();
const posTmp = new THREE.Vector3();
const spherical = new THREE.Spherical(5, Math.PI * 0.5, 0);
const zero = new THREE.Vector3(0, 0, 0);
const hp = Math.PI * 0.5;
const mouseRot = Math.PI * 0.1;
let autoMove = true;

function spaceScene() {
  const sky = new THREE.Group();

  const nStars = 5000;
  const points = new Float32Array(nStars * 3);
  const rand = new Float32Array(nStars);

  for (let i = 0; i < nStars; i++) {
    const theta = Math.random() * Math.PI * 2.0;
    const phi = Math.acos(Math.random() * 2.0 - 1.0);

    spherical.set(100, phi, theta);
    posTmp.setFromSpherical(spherical);
    posTmp.toArray(points, i * 3);

    rand[i] = Math.random();
  }

  const starsGeo = new THREE.BufferGeometry();
  starsGeo.setAttribute('position', new THREE.BufferAttribute(points, 3));
  starsGeo.setAttribute('random', new THREE.BufferAttribute(rand, 1));
  const starsMat = new THREE.ShaderMaterial({
    transparent: true,
    blending: THREE.AdditiveBlending,
    depthTest: true,
    depthWrite: false,
    vertexShader: `
    
attribute float random;
    
varying vec3 vPos;

void main() {
  vPos = position;
  vec4 mvPosition = modelViewMatrix * vec4(position, 1.0);
  gl_Position = projectionMatrix * mvPosition;
  gl_PointSize = 10.0 + random * 10.0;
}

`,
    fragmentShader: `

varying vec3 vPos;

float rand(vec2 co) {
    return fract(sin(dot(co, vec2(12.9898, 78.233))) * 43758.5453);
}

void main() {
  vec2 uv = vec2(gl_PointCoord.x, 1.0 - gl_PointCoord.y);
  vec2 centre = uv - 0.5;
  
  vec3 rgb = vec3(
    rand(vPos.xy),
    rand(vPos.xz),
    rand(vPos.yz)
  );

  vec3 col = vec3(0.5) + rgb * 0.5;
  
  float a = smoothstep(0.8, 1.0, 1.0 - length(centre) * 2.0);
  

  gl_FragColor = vec4(col, a);
}

` });


  const stars = new THREE.Points(starsGeo, starsMat);
  sky.add(stars);

  const planetGeo = new THREE.SphereGeometry(1, 64, 64);
  const planetMat = new THREE.ShaderMaterial({
    uniforms: {
      uTime: { value: 0 } },

    transparent: true,
    vertexShader: `

varying vec3 vPos;

void main() {
  vPos = position;
  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
}

`,
    fragmentShader: `

varying vec3 vPos;
uniform float uTime;

//      Simplex 3D Noise 
//      by Ian McEwan, Ashima Arts
//
vec4 permute(vec4 x){return mod(((x*34.0)+1.0)*x, 289.0);}
vec4 taylorInvSqrt(vec4 r){return 1.79284291400159 - 0.85373472095314 * r;}

float snoise(vec3 v){ 
  const vec2  C = vec2(1.0/6.0, 1.0/3.0) ;
  const vec4  D = vec4(0.0, 0.5, 1.0, 2.0);

// First corner
  vec3 i  = floor(v + dot(v, C.yyy) );
  vec3 x0 =   v - i + dot(i, C.xxx) ;

// Other corners
  vec3 g = step(x0.yzx, x0.xyz);
  vec3 l = 1.0 - g;
  vec3 i1 = min( g.xyz, l.zxy );
  vec3 i2 = max( g.xyz, l.zxy );

  //  x0 = x0 - 0. + 0.0 * C 
  vec3 x1 = x0 - i1 + 1.0 * C.xxx;
  vec3 x2 = x0 - i2 + 2.0 * C.xxx;
  vec3 x3 = x0 - 1. + 3.0 * C.xxx;

// Permutations
  i = mod(i, 289.0 ); 
  vec4 p = permute( permute( permute( 
             i.z + vec4(0.0, i1.z, i2.z, 1.0 ))
           + i.y + vec4(0.0, i1.y, i2.y, 1.0 )) 
           + i.x + vec4(0.0, i1.x, i2.x, 1.0 ));

// Gradients
// ( N*N points uniformly over a square, mapped onto an octahedron.)
  float n_ = 1.0/7.0; // N=7
  vec3  ns = n_ * D.wyz - D.xzx;

  vec4 j = p - 49.0 * floor(p * ns.z *ns.z);  //  mod(p,N*N)

  vec4 x_ = floor(j * ns.z);
  vec4 y_ = floor(j - 7.0 * x_ );    // mod(j,N)

  vec4 x = x_ *ns.x + ns.yyyy;
  vec4 y = y_ *ns.x + ns.yyyy;
  vec4 h = 1.0 - abs(x) - abs(y);

  vec4 b0 = vec4( x.xy, y.xy );
  vec4 b1 = vec4( x.zw, y.zw );

  vec4 s0 = floor(b0)*2.0 + 1.0;
  vec4 s1 = floor(b1)*2.0 + 1.0;
  vec4 sh = -step(h, vec4(0.0));

  vec4 a0 = b0.xzyw + s0.xzyw*sh.xxyy ;
  vec4 a1 = b1.xzyw + s1.xzyw*sh.zzww ;

  vec3 p0 = vec3(a0.xy,h.x);
  vec3 p1 = vec3(a0.zw,h.y);
  vec3 p2 = vec3(a1.xy,h.z);
  vec3 p3 = vec3(a1.zw,h.w);

//Normalise gradients
  vec4 norm = taylorInvSqrt(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3))); 
  p0 *= norm.x;
  p1 *= norm.y;
  p2 *= norm.z;
  p3 *= norm.w;

// Mix final noise value
  vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);
  m = m * m;
  return 42.0 * dot( m*m, vec4( dot(p0,x0), dot(p1,x1), 
                                dot(p2,x2), dot(p3,x3) ) );
}

vec3 hex2rgb(int hex) {
  return vec3(
    float((hex >> 16) & 0xFF) / 255.0,
    float((hex >> 8) & 0xFF) / 255.0,
    float(hex & 0xFF) / 255.0
  );
}

mat2 rotate2d(float _angle) {
  return mat2(
    cos( _angle ), -sin( _angle ),
    sin( _angle ), cos( _angle )
  );
}

// https://www.shadertoy.com/view/fd3SRf
float sdHexagon( vec2 p, float s, float r ) 
{
    const vec3 k = vec3(-0.866025404,0.5,0.577350269);
    p = abs(p);
    p -= 2.0*min(dot(k.xy,p),0.0)*k.xy;
    p -= vec2(clamp(p.x, -k.z*s, k.z*s), s);
    return length(p)*sign(p.y) - r;
}

#define PI 3.1415926
#define HP PI * 0.5

void main() {
  float len = length(vPos);
  vec3 position = vPos;
  po.........完整代码请登录后点击上方下载按钮下载查看