three+webgl打造一个梦幻世界视觉效果代码-html代码-BFW代码库

three+webgl打造一个梦幻世界视觉效果代码

代码语言：html

代码描述：three+webgl打造一个梦幻世界视觉效果代码

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

<html lang="en"><head>

  <meta charset="UTF-8">

  
  
  
<style>
* {
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}

body {
  height: 100vh;
  background-color: black;
  margin: 0;
  padding: 0;
  overflow: hidden;
  position: relative;
}
</style>

</head>

<body>
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 * https://twitter.com/bruno_simon
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<div id="shadercollab"></div>
<script id="vertex" type="x-shader/x-vertex">
	void main() { gl_Position = vec4(position, 1.0); }
</script>

<script id="fragment" type="x-shader/x-vertex">
precision highp float;
	
#define M_PI 3.1415926535897932384626433832795

uniform vec2 u_resolution;
uniform float u_time;
	
//	Classic Perlin 2D Noise 
//	by Stefan Gustavson
//
vec4 permute(vec4 x){return mod(((x*34.0)+1.0)*x, 289.0);}
vec2 fade(vec2 t) {return t*t*t*(t*(t*6.0-15.0)+10.0);}

float cnoise(vec2 P){
  vec4 Pi = floor(P.xyxy) + vec4(0.0, 0.0, 1.0, 1.0);
  vec4 Pf = fract(P.xyxy) - vec4(0.0, 0.0, 1.0, 1.0);
  Pi = mod(Pi, 289.0); // To avoid truncation effects in permutation
  vec4 ix = Pi.xzxz;
  vec4 iy = Pi.yyww;
  vec4 fx = Pf.xzxz;
  vec4 fy = Pf.yyww;
  vec4 i = permute(permute(ix) + iy);
  vec4 gx = 2.0 * fract(i * 0.0243902439) - 1.0; // 1/41 = 0.024...
  vec4 gy = abs(gx) - 0.5;
  vec4 tx = floor(gx + 0.5);
  gx = gx - tx;
  vec2 g00 = vec2(gx.x,gy.x);
  vec2 g10 = vec2(gx.y,gy.y);
  vec2 g01 = vec2(gx.z,gy.z);
  vec2 g11 = vec2(gx.w,gy.w);
  vec4 norm = 1.79284291400159 - 0.85373472095314 * 
    vec4(dot(g00, g00), dot(g01, g01), dot(g10, g10), dot(g11, g11));
  g00 *= norm.x;
  g01 *= norm.y;
  g10 *= norm.z;
  g11 *= norm.w;
  float n00 = dot(g00, vec2(fx.x, fy.x));
  float n10 = dot(g10, vec2(fx.y, fy.y));
  float n01 = dot(g01, vec2(fx.z, fy.z));
  float n11 = dot(g11, vec2(fx.w, fy.w));
  vec2 fade_xy = fade(Pf.xy);
  vec2 n_x = mix(vec2(n00, n01), vec2(n10, n11), fade_xy.x);
  float n_xy = mix(n_x.x, n_x.y, fade_xy.y);
  return 2.3 * n_xy;
}
	
// Transform UV to radial UV
vec2 getRadialUv(vec2 uv)
{
	float angle = atan(uv.x, - uv.y);
	angle = abs(angle);
	
	vec2 radialUv = vec2(0.0);
	radialUv.x = angle / (M_PI * 2.0) + 0.5;
	radialUv.y = 1.0 - pow(1.0 - length(uv), 4.0);
	
	return radialUv;
}
	
// Get the elevation using perlin noises
float getElevation(vec2 uv)
{
	float elevation = cnoise(uv * 15.0);
	elevation += cnoise(uv * 80.0) * 0.2;
	elevation += cnoise(uv * 200.0) * 0.1;
	if(elevation > - 0.15)
		elevation += abs(cnoise(uv * 900.0) * 0.15);
	
	return elevation;
}

// Get terrain color
vec3 getTerrainColor(float elevation)
{
	// Set colors
	vec3 sandColor = vec3(0.96, 0.64, 0.38); // sandybrown
	vec3 forestColor = vec3(0.0, 0.4, 0.1); // green
	vec3 meltedSnowColor = vec3(0.7, 0.9, 1.0); // melted snow
	vec3 snowColor = vec3(1.0); // snow
	
	// Get sand and forest mix
	vec3 color = mix(sandColor, forestColor, elevation);
	
	if(elevation > 0.7)
	{
		color = mix(meltedSnowColor, snowColor, (elevation - 0.7) / 0.3);
	}
	
	return color;
}
	
// Get water color
vec3 getWaterCo.........完整代码请登录后点击上方下载按钮下载查看