threejs实现一个三维太阳球体燃烧效果代码-html代码-BFW代码库

代码语言：html
所属分类：三维
代码描述：threejs实现一个三维太阳球体燃烧效果代码
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">

  <meta name="viewport" content="width=device-width, initial-scale=1">
  
<link type="text/css" rel="stylesheet" href="//repo.bfw.wiki/bfwrepo/css/aqua-1.5.5.css">
  
<style>
body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  background: #f7f7fd;
}
</style>


</head>

<body >
  <div class="relative w-screen h-screen">
  <div class="sun w-full h-full bg-black"></div>
</div>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.126.js"></script>

  <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/stats-min.js"></script>
  <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/OrbitControls.133.js"></script>
      <script>

const calcAspect = (el) => el.clientWidth / el.clientHeight;
const getNormalizedMousePos = (e) => {
    return {
        x: (e.clientX / window.innerWidth) * 2 - 1,
        y: -(e.clientY / window.innerHeight) * 2 + 1
    };
};
const templateVertexShader = `
varying vec2 vUv;

void main(){
    vec4 modelPosition=modelMatrix*vec4(position,1.);
    vec4 viewPosition=viewMatrix*modelPosition;
    vec4 projectedPosition=projectionMatrix*viewPosition;
    gl_Position=projectedPosition;
    
    vUv=uv;
}
`;
const templateFragmentShader = `
uniform float uTime;
uniform vec2 uMouse;
uniform vec2 uResolution;

varying vec2 vUv;

void main(){
    vec3 color=vec3(vUv.x,vUv.y,1.);
    gl_FragColor=vec4(color,1.);
}
`;
const sunNoiseVertexShader = `
#define GLSLIFY 1
varying vec2 vUv;
varying vec3 vPosition;

void main(){
    vec4 modelPosition=modelMatrix*vec4(position,1.);
    vec4 viewPosition=viewMatrix*modelPosition;
    vec4 projectedPosition=projectionMatrix*viewPosition;
    gl_Position=projectedPosition;
    
    vUv=uv;
    vPosition=position;
}
`;
const sunNoiseFragmentShader = `
#define GLSLIFY 1
//
// Description : Array and textureless GLSL 2D/3D/4D simplex
//               noise functions.
//      Author : Ian McEwan, Ashima Arts.
//  Maintainer : ijm
//     Lastmod : 20110822 (ijm)
//     License : Copyright (C) 2011 Ashima Arts. All rights reserved.
//               Distributed under the MIT License. See LICENSE file.
//               https://github.com/ashima/webgl-noise
//

vec4 mod289(vec4 x) {
  return x - floor(x * (1.0 / 289.0)) * 289.0; }

float mod289(float x) {
  return x - floor(x * (1.0 / 289.0)) * 289.0; }

vec4 permute(vec4 x) {
     return mod289(((x*34.0)+1.0)*x);
}

float permute(float x) {
     return mod289(((x*34.0)+1.0)*x);
}

vec4 taylorInvSqrt(vec4 r)
{
  return 1.79284291400159 - 0.85373472095314 * r;
}

float taylorInvSqrt(float r)
{
  return 1.79284291400159 - 0.85373472095314 * r;
}

vec4 grad4(float j, vec4 ip)
  {
  const vec4 ones = vec4(1.0, 1.0, 1.0, -1.0);
  vec4 p,s;

  p.xyz = floor( fract (vec3(j) * ip.xyz) * 7.0) * ip.z - 1.0;
  p.w = 1.5 - dot(abs(p.xyz), ones.xyz);
  s = vec4(lessThan(p, vec4(0.0)));
  p.xyz = p.xyz + (s.xyz*2.0 - 1.0) * s.www;

  return p;
  }

// (sqrt(5) - 1)/4 = F4, used once below
#define F4 0.309016994374947451

float snoise(vec4 v)
  {
  const vec4  C = vec4( 0.138196601125011,  // (5 - sqrt(5))/20  G4
                        0.276393202250021,  // 2 * G4
                        0.414589803375032,  // 3 * G4
                       -0.447213595499958); // -1 + 4 * G4

// First corner
  vec4 i  = floor(v + dot(v, vec4(F4)) );
  vec4 x0 = v -   i + dot(i, C.xxxx);

// Other corners

// Rank sorting originally contributed by Bill Licea-Kane, AMD (formerly ATI)
  vec4 i0;
  vec3 isX = step( x0.yzw, x0.xxx );
  vec3 isYZ = step( x0.zww, x0.yyz );
//  i0.x = dot( isX, vec3( 1.0 ) );
  i0.x = isX.x + isX.y + isX.z;
  i0.yzw = 1.0 - isX;
//  i0.y += dot( isYZ.xy, vec2( 1.0 ) );
  i0.y += isYZ.x + isYZ.y;
  i0.zw += 1.0 - isYZ.xy;
  i0.z += isYZ.z;
  i0.w += 1.0 - isYZ.z;

  // i0 now contains the unique values 0,1,2,3 in each channel
  vec4 i3 = clamp( i0, 0.0, 1.0 );
  vec4 i2 = clamp( i0-1.0, 0.0, 1.0 );
  vec4 i1 = clamp( i0-2.0, 0.0, 1.0 );

  //  x0 = x0 - 0.0 + 0.0 * C.xxxx
  //  x1 = x0 - i1  + 1.0 * C.xxxx
  //  x2 = x0 - i2  + 2.0 * C.xxxx
  //  x3 = x0 - i3  + 3.0 * C.xxxx
  //  x4 = x0 - 1.0 + 4.0 * C.xxxx
  vec4 x1 = x0 - i1 + C.xxxx;
  vec4 x2 = x0 - i2 + C.yyyy;
  vec4 x3 = x0 - i3 + C.zzzz;
  vec4 x4 = x0 + C.wwww;

// Permutations
  i = mod289(i);
  float j0 = permute( permute( permute( permute(i.w) + i.z) + i.y) + i.x);
  vec4 j1 = permute( permute( permute( permute (
             i.w + vec4(i1.w, i2.w, i3.w, 1.0 ))
           + i.z + vec4(i1.z, i2.z, i3.z, 1.0 ))
           + i.y + vec4(i1.y, i2.y, i3.y, 1.0 ))
           + i.x + vec4(i1.x, i2.x, i3.x, 1.0 ));

// Gradients: 7x7x6 points over a cube, mapped onto a 4-cross polytope
// 7*7*6 = 294, which is close to the ring size 17*17 = 289.
  vec4 ip = vec4(1.0/294.0, 1.0/49.0, 1.0/7.0, 0.0) ;

  vec4 p0 = grad4(j0,   ip);
  vec4 p1 = grad4(j1.x, ip);
  vec4 p2 = grad4(j1.y, ip);
  vec4 p3 = grad4(j1.z, ip);
  vec4 p4 = grad4(j1.w, ip);

// 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;
  p4 *= taylorInvSqrt(dot(p4,p4));

// Mix contributions from the five corners
  vec3 m0 = max(0.6 - vec3(dot(x0,x0), dot(x1,x1), dot(x2,x2)), 0.0);
  vec2 m1 = max(0.6 - vec2(dot(x3,x3), dot(x4,x4)            ), 0.0);
  m0 = m0 * m0;
  m1 = m1 * m1;
  return 49.0 * ( dot(m0*m0, vec3( dot( p0, x0 ), dot( p1, x1 ), dot( p2, x2 )))
               + dot(m1*m1, vec2( dot( p3, x3 ), dot( p4, x4 ) ) ) ) ;

  }

#define OCTAVES 6

uniform float uTime;
uniform vec2 uMouse;
uniform vec2 uResolution;

varying vec2 vUv;
varying vec3 vPosition;

float fbm4d(vec4 p){
    float sum=0.;
    float amp=1.;
    float scale=1.;
    for(int i=0;i<OCTAVES;i++){
        sum+=snoise(p*scale)*amp;
        p.w+=100.;
        amp*=.9;
        scale*=2.;
    }
    return sum;
}

void main(){
    vec4 p=vec4(vPosition*4.,uTime*.025);
    float noise=fbm4d(p);
    vec4 p1=vec4(vPosition*2.,uTime*.25);
    float spot=max(snoise(p1),0.);
    vec4 color=vec4(noise);
    color*=mix(1.,spot,.7);
    gl_FragColor=color;
}
`;
const sunShapeVertexShader = `
#define GLSLIFY 1
mat2 rotation2d(float angle) {
        float s = sin(angle);
        float c = cos(angle);

        return mat2(
                c, -s,
                s, c
        );
}

mat4 rotation3d(vec3 axis, float angle) {
  axis = normalize(axis);
  float s = sin(angle);
  float c = cos(angle);
  float oc = 1.0 - c;

  return mat4(
                oc * axis.x * axis.x + c,           oc * axis.x * axis.y - axis.z * s,  oc * axis.z * axis.x + axis.y * s,  0.0,
    oc * axis.x * axis.y + axis.z * s,  oc * axis.y * axis.y + c,           oc * axis.y * axis.z - axis.x * s,  0.0,
    oc * axis.z * axis.x - axis.y * s,  oc * axis.y * axis.z + axis.x * s,  oc * axis.z * axis.z + c,           0.0,
                0.0,                                0.0,                                0.0,                                1.0
        );
}

vec2 rotate(vec2 v, float angle) {
        return rotation2d(angle) * v;
}

vec3 rotate(vec3 v, vec3 axis, float angle) {
        return (rotation3d(axis, angle) * vec4(v, 1.0)).xyz;
}

// https://tympanus.net/codrops/2019/10/29/real-time-multiside-refraction-in-three-steps/
vec3 getEyeVector(mat4 modelMat,vec3 pos,vec3 camPos){
    vec4 worldPosition=modelMat*vec4(pos,1.);
    vec3 eyeVector=normalize(worldPosition.xyz-camPos);
    return eyeVector;
}

const float HALF_PI=1.570796327;

uniform float uTime;
uniform float uVelocity;
uniform float uStagger;

varying vec2 vUv;
varying vec3 vPosition;
varying vec3 vLayer1;
varying vec3 vLayer2;
varying vec3 vLayer3;
varying vec3 vNormal;
varying vec3 vEyeVector;

void main(){
    vec4 modelPosition=modelMatrix*vec4(position,1.);
    vec4 viewPosition=viewMatrix*modelPosition;
    vec4 projectedPosition=projectionMatrix*viewPosition;
    gl_Position=projectedPosition;
    
    vec3 pos=position;
    float displacement1=uVelocity*uTime;
    float displacement2=uVelocity*(uTime*1.5+uStagger*1.);
    float displacement3=uVelocity*(uTime*2.+uStagger*2.);
    vec3 xy=vec3(1.,1.,0.);
    vec3 xz=vec3(1.,0.,1.);
    vec3 yz=vec3(0.,1.,1.);
    vec3 layer1=rotate(pos,xy,displacement1);
    vec3 layer2=rotate(pos,xz,displacement2);
    vec3 layer3=rotate(pos,yz,displacement3);
    
    vUv=uv;
    vPosition=position;
    vLayer1=layer1;
    vLayer2=layer2;
    vLayer3=layer3;
    vNormal=normal;
    vEyeVector=getEyeVector(modelMatrix,position,cameraPosition);
}
`;
const sunShapeFragmentShader = `
#define GLSLIFY 1
// https://www.shadertoy.com/view/4scSW4
float fresne.........完整代码请登录后点击上方下载按钮下载查看