threejs打造虚幻背景和繁星点点文字效果代码-html代码-BFW代码库

代码语言：html

所属分类：游戏

代码描述：threejs打造虚幻背景和繁星点点文字效果代码

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>
* {
  box-sizing: border-box;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
}

body {
  height: 100vh;
  background-color: #000;
  margin: 0;
  padding: 0;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
}

.c-hero {
  width: 100%;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

h1 {
  color: rgba(255, 255, 255, 0.95);
  font-family: "Exo 2", sans-serif;
  font-size: 9vmin;
  font-weight: 700;
  letter-spacing: 3vmin;
  text-transform: uppercase;
  text-shadow: #fdfd05 1px 0 30px;
  position: absolute;
}
</style>



</head>

<body  >
  <!-- 
 * HERO SPACE COMPONENT with SHADERZZZ <3
 * Made for FrontendHorse Twitch Stream
 * https://frontend.horse/episode/gorgeous-space-shaders
 *
 * SEPTEMBER 2021
 *
 * By ilithya
 * https://www.ilithya.rocks/
 * https://twitter.com/ilithya_rocks 
-->

<div id="shader" class="c-hero">
<!-- 	<h1>Spacebnb</h1> -->
</div>
<script id="vertex" type="x-shader/x-vertex">
	varying vec2 vUv;

    void main() {
		vUv = (uv - 0.5) * 2.0;
		gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
    }
</script>

<script id="vertex-font" type="x-shader/x-vertex">
	varying vec2 vUv;
	
	uniform vec2 u_ratio;
	
    void main() {
		vUv = uv;
		gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
		vUv = (gl_Position.xy / gl_Position.w);
		vUv *= u_ratio; // Normalized Device Coordinates
    }
</script>

<script id="fragment" type="x-shader/x-fragment">
precision highp float;

varying vec2 vUv;

#define TAU 6.2831853071795864769252867665590

uniform float u_time;
uniform bool u_text;

// https://gist.github.com/patriciogonzalezvivo/670c22f3966e662d2f83
float rand(vec2 n) { 
	return fract(sin(dot(n, vec2(12.9898, 4.1414))) * 43758.5453);
}

float circleShape(in vec2 uv, in float radius) {
    float circle = distance(
        uv, 
        vec2( 
			clamp(
				// tan(u_time * // TRY another effect
				sin(u_time * 0.5 *
					rand(vec2(radius)) 
				),
				0.25,
				0.75
			) 
        ) 
    );

    return smoothstep(
        radius * 0.2,
        radius * 0.21, 
        circle
    );
}
	
void main(void){
	vec2 uv = vUv;

	if (u_text) {
		uv.x -= 2.0; 
		uv.y += 0.5; // TRY 1.0
	}

    float time = u_time;    
    
    // SPACE BACKGROUND
    vec3 color = vec3(0.0);

    float space = atan(uv.x, uv.y) + uv.x;
    space /= TAU; 
    space = fract(space * 3. * 7. + time * 0.1);

    color = vec3(space);
	
	// COLORS
    vec3 c1 = vec3(0.27, 0.32, 0.78); // blue-purple 
    vec3 c2 = vec3(1.1, 1.1, 0.3); // final yellow // Try g - 1.3
    // vec3 c2 = vec3(1.0, 0.87, 0.3); // before yellow
    vec3 c3 = vec3(1.0); // white
    vec3 c4 = vec3(0.57, 0.5, 0.9); // light purple
    vec3 c5 = vec3(0.1, 0.3, 0.4); // aqua
	vec3 c6 = vec3(0.35, 0.0, 1.0); // blue
	vec3 c7 = vec3(0.95); // grayish

	color = mix(c1, c5, color);
    // color = mix(c1, c4, color); TRY another combination

    // GLOW
    float circle = distance(
        vec2(uv.x, uv.y * 1.5) * 0.5, 
        vec2(-0.2, -0.2)
    );
    vec3 glow = vec3(circle);
    // glow = step(0.3, glow); // TO DEBUG

    glow = smoothstep(0.0, 0.5, glow);
    color = 0.2 + mix(color, glow, color);
    
    // MAIN STAR
    float star = length(uv);
    star = smoothstep(0.0, 0.45, star);

    color *= mix(c2, c3, star);

    // STARDUST
    float i = 45.0;
    vec2 particles = ceil(uv*i);

    float dust = circleShape(
        fract(uv * i),
        rand(particles) 
    );
    
	vec3 gradientBg = mix(c3, c6, length(uv*1.5)); // TRY 1.7
    vec3 gradientDust = mix(c7, c3, length(uv)); // TR.........完整代码请登录后点击上方下载按钮下载查看