webgl实现canvas三维木碗木球旋转动画效果代码-html代码-BFW代码库

代码语言：html
所属分类：三维
代码描述：webgl实现canvas三维木碗木球旋转动画效果代码，右上角可设置速度。
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">
  
  
  
<style>
::-webkit-scrollbar {
  width: 0.625rem;
  height: 0.625rem;
}

::-webkit-scrollbar-thumb {
  background: #111;
  border-radius: 0.3125rem;
  box-shadow: inset 0.125rem 0.125rem 0.125rem rgba(255, 255, 255, 0.25),
    inset -0.125rem -0.125rem 0.125rem rgba(0, 0, 0, 0.25);
  cursor: default;
}

::-webkit-scrollbar-track {
  background: #333;
}

::selection {
  background: #fff;
  color: #333;
}

html,
body {
  height: 100vh;
  height: 100dvh;
  margin: 0;
  overflow: hidden;
}

body {
  display: grid;
  grid-template-rows: calc(100dvh - 4rem) 4rem;
  font-family: system-ui, sans-serif;
}

canvas,
.editor,
#controls {
  grid-row: 1;
  grid-column: 1;
}

canvas {
  width: 100%;
  height: auto;
  object-fit: contain;
  background: black;
  touch-action: none;
}

.editor,
.overlay,
#error {
  background: repeating-linear-gradient(0deg, #000a, #1119, #000a .25rem);
  padding: 1em;
}

.editor {
  color: #fefefe;
  tab-size: 2;
  border: none;
  resize: none;
}

.editor:focus {
  outline: none;
}

#error {
  grid-row: 2;
  grid-column: 1;
  margin: 0;
  padding-block: 0;
  padding-top: .5em;
  color: firebrick;
  overflow: auto;
  text-wrap: pretty;
}

#indicator {
  visibility: hidden;
  position: absolute;
  top: calc(var(--top, 0px) - var(--scroll-top, 0px));
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 10px solid firebrick;
  transform: translateY(-25%);
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  margin: 0;
}

.editor,
.overlay {
  font-size: 1rem;
  line-height: 1.2;
  white-space: pre;
}

#controls {
  position: fixed;
  top: 1em;
  right: 2em;
}

.controls {
  position: relative;
  display: flex;
  gap: 1.5em;
  padding: .5em 1.25em;
  background: #1111;
  border-radius: 4px;
}

.controls::before,
.controls::after {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 0;
  transform: scale(.95);
  border-radius: inherit;
  opacity: 0;
}

.controls::before {
  background: #aef;
  animation: pulse 2s infinite;
}

.controls::after {
  background: #fefefe66;
  transition: transform 200ms ease-in-out;
}

.controls:hover::before,
.controls:hover::after {
  opacity: 1;
}

.controls:hover::before {
  transform: scale(.98);
  filter: blur(2px);
}

.controls:hover::after {
  transform: scale(1.025, 1.1);
}

.controls:hover {
  background: #111f;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.0125);
  }

  100% {
    transform: scale(1);
  }
}

.hidden {
  display: none !important;
}

.opaque {
  opacity: 1 !important;
  background: #111 !important;
}

input {
  all: unset;
  opacity: .2;
  filter: saturate(0) invert(1);
  cursor: pointer;
  transition: opacity 200ms ease-in-out;
  padding: .25em .5em;
}

input:hover {
  opacity: 1;
}

.icon {
  text-align: center;
  line-height: 1;
}

#btnToggleView {
  width: 1.25em;
}

#btnToggleView::after {
  content: '👁';
}

#btnToggleView:checked::after {
  content: '✏️';
}

#btnToggleResolution::after {
  content: '1️⃣';
}

#btnToggleResolution:checked::after {
  content: '2️⃣';
}

#btnReset::after {
  content: '⏮️';
}
</style>

 
  
  
</head>

<body translate="no">
  <canvas id="canvas"></canvas>
<textarea id="codeEditor" class="editor" spellcheck="false" autocorrect="off" autocapitalize="off" translate="no" oninput="render()"></textarea>
<pre id="error"></pre>
<div id="indicator"></div>
<div id="controls">
  <div class="controls">
    <input id="btnToggleView" class="icon" type="checkbox" name="toggleView" onclick="toggleView()">
    <input id="btnToggleResolution" class="icon" type="checkbox" name="toggleResolution" onchange="toggleResolution()">
    <input id="btnReset" class="icon" type="checkbox" name="reset" onclick="reset()">
  </div>
</div>
<script type="x-shader/x-fragment">#version 300 es
/*********
* made by Matthias Hurrle (@atzedent)
*/ 
precision highp float;
out vec4 O;
uniform float time;
uniform vec2 resolution;
uniform vec2 touch;
uniform int pointerCount;
#define mouse (touch/R)
#define P pointerCount
#define FC gl_FragCoord.xy
#define R resolution
#define T time
#define S smoothstep
#define N normalize
#define rot(a) mat2(cos(a-vec4(0,11,33,0)))
float smin(float a, float b, float k) {
	float h=clamp(.5+.5*(b-a)/k,.0,1.);
	return mix(b,a,h)-k*h*(1.-h);
}
vec2 map(vec3 p) {
	p.y+=.25;
	float
	bwl=smin(abs(length(p)-1.)-.1, (p.y-.25), -.025),
	bl0=length(p-vec3(0,.5,0))-.5,
	bl1=length(p-vec3(sin(T),1.5,0))-.25,
	bl2=length(p-vec3(0,2.125,cos(T)*.5))-.125;
	vec2
	a=vec2(bwl,0),
	b=vec2(bl0,1),
	c=vec2(bl1,2),
	d=vec2(bl2,3);
	a=a.x<b.x?a:b;
	a=a.x<c.x?a:c;
	a=a.x<d.x?a:d;
	return a;
}
vec3 norm(vec3 p) {
	float h=1e-3; vec2 k=vec2(-1,1);
	return N(
		k.xyy*map(p+k.xyy*h).x+
		k.yxy*map(p+k.yxy*h).x+
		k.yyx*map(p+k.yyx*h).x+
		k.xxx*map(p+k.xxx*h).x
	);
}
float rnd(vec2 p) { return fract(sin(dot(p,vec2(12.9898,78.233)))*345678.); }
float noise(vec2 p) {
	vec2 f=fract(p), i=floor(p), u=S(.0,1.,f);
	float
	a=rnd(i),
	b=rnd(i+vec2(1,0)),
	c=rnd(i+vec2(0,1)),
	d=rnd(i+1.);
	return mix(mix(a,b,u.x),mix(c,d,u.x),u.y);
}
float fbm(vec2 p) {
	float t=.0, a=.5;
	for (int i=0; i<5; i++) {
		t+=a*noise(p);
		p*=2.;
		a*=.5;
	}
	return t;
}
float pattern(vec2 p) {
	float d=1.;
	p.y+=.085;
	for (float i=.0; i<3.; i++) {
		float
		a=fbm(p*d),
		b=fbm((p*mat2(1.6,-1.2,1.2,-1.6))*8.*d);
		d=a+b-a*b;
		p*=2.;
	}
	return tanh(d*d);
}
float calcAO(vec3 p, vec3 n) {
  float occ=.0, sca=1.;
  for (float i=.0; i<5.; i++) {
    float
    h=.01+i*.04,
    d=map(p+h*n).x;
    occ+=(h-d)*sca;
    sca*=.55;
    if (occ>.35) break;
  }
  return clamp(1.-3.*occ,.0,1.)*(.5+.5*n.y);
}
float shadow(vec3 ro,vec3 rd,float mind,float maxd) {
  float shd = 1.;
  for (int i=0; i<24; i++) {
    float
    d = map(ro+rd*mind).x;

    shd = min(shd,clamp(12.*d/mind,.0,1.));
    mind += clamp(d,.01,.2);

    if (abs(shd)<1e-3 || mind>maxd) break;
  }
  return S(.0,1.,shd);
}
void cam(inout vec3 p) {
	if (P>0) {
		p.yz*=rot(-mouse.y*6.3+3.14);
		p.xz*=rot(3.14-mouse.x*6.3);
	} else {
		float t=T*.2;
		t+=sin(t)*.5+.5;
		p.yz*=rot(exp((cos(t)*.5-.75)-.5));
		p.xz*=rot((sin(t)*.5+.5)*.2+t);
	}
}
void main() {
	vec2 uv=(FC-.5*R)/min(R.x,R.y);
	float t=T*.2;
	t+=sin(t)*.5+.5;
	vec3 col=vec3(0),
	p=vec3(0,0,exp(-cos(t))*1.5-9.),
	rd=N(vec3(uv,1.9));
	cam(p); cam(rd);
	const float steps=400., maxd=12.;
	for (float i=.0; i<steps; i++) {
		vec2 d=map(p);
		if (abs(d.x)<1e-3) {
			vec3 n=norm(p),
			r=reflect(rd,n),
			l=N(vec3(0,10,0));
			float
			diff=clamp(dot(l,n)*.5+.5,.0,1.), fres=pow(S(1.,.0,dot(rd,n)),2.), spec=pow(r.y*.5+.5,7.);
			col+=diff*fres*calcAO(p,n)+spec;
			col=1.5*mix(.55*col,col,clamp(shadow(p+n*5e-2,l,5e-3,2.5),.0,1.));
			col*=mix(vec3(.9,.5,.3),vec3(.9,.4,.1),n.y*.5+.5);
			vec3 q=p;
			if (d.y == 2.) q.x-=sin(T);
			else if (d.y == 3.) { q.z-=cos(T)*.5; q*=.8; } 
			q.xz*=rot(1.5707*d.y);
			q.y-=clamp(round(q.y/.5),-2.,2.)*.5;
			q.yz=round(q.yz*.8);
			q.xz*=.15;
			n=norm(q);
			col=mix(col,vec3(1)*max(max(
				pattern(q.xy)*abs(n.z),
				pattern(q.yz)*abs(n.x)),
				pattern(q.xz)*abs(n.y)
			),.5);
			col=tanh(col*col*col*col);
			break;
		}
		if (d.x>maxd) break;
		p+=rd*d.x;
	}
	col=pow(col,vec3(.4545));
	O=vec4(col,1);
}</script>
  
      <script  >
/*********
 * made by Matthias Hurrle (@atzedent)
 */
let editMode = false // set to false to hide the code editor on load
let resolution = .5 // set 1 for full resolution or to .5 to start with half resolution on load
let renderDelay = 1000 // delay in ms before rendering the shader after a change
let dpr = Math.max(1, resolution * window.devicePixelRatio)
let frm, source, editor, store, renderer, pointers
const shaderId = 'Rusty Eggs'
window.onload = init

function resize() {
  const { innerWidth: width, innerHeight: height } = window

  canvas.width = width * dpr
  canvas.height = height * dpr

  if (renderer) {
    renderer.updateScale(dpr)
  }
}
function toggleView() {
  editor.hidden = btnToggleView.checked
}
function reset() {
  let shader = source
  editor.text = shader ? shader.textContent : renderer.defaultSource
  store.putShaderSource(shaderId, editor.text)
  renderThis()
}
function toggleResolution() {
  resolution = btnToggleResolution.checked ? .5 : 1
  dpr = Math.max(1, resolution * window.devicePixelRatio)
  pointers.updateScale(dpr)
  resize()
}
function loop(now) {
  renderer.updateMouse(pointers.first)
  renderer.updatePointerCount(pointers.count)
  renderer.updatePointerCoords(pointers.coords)
  renderer.render(now)
  frm = requestAnimationFrame(loop)
}
function renderThis() {
  editor.clearError()
  store.putShaderSource(shaderId, editor.text)

  const result = renderer.test(editor.text)

  if (result) {
    editor.setError(result)
  } else {
    renderer.updateShader(editor.text)
  }
  cancelAnimationFrame(frm) // Always cancel the previous frame!
  loop(0)
}
const debounce = (fn, delay) => {
  let timerId
  return (...args) => {
    clearTimeout(timerId)
    timerId = setTimeout(() => fn.apply(this, args), delay)
  }
}
const render = debounce(renderThis, renderDelay)
function init() {
  source = document.querySelector("script[type='x-shader/x-fragment']")

  document.title = "🥚"

  renderer = new Renderer(canvas, dpr)
  pointers = new PointerHandler(canvas, dpr)
  store    = new Store(window.location)
  editor   = new Editor(codeEditor, error, indicator)
  editor.text = source.textContent
  renderer.setup()
  renderer.init()

  if (!editMode) {
    btnToggleView.checked = true
    toggleView()
  }
  if (resolution === .5) {
    btnToggleResolution.checked = true
    toggleResolution()
  }
  canvas.addEventListener('shader-error', e => editor.setError(e.detail))

  resize()

  if (renderer.test(source.textContent) === null) {
    renderer.updateShader(source.textContent)
  }
  loop(0)
  window.onresize = resize
  window.addEventListener("keydown", e => {
    if (e.key === "L" && e.ctrlKey) {
      e.preventDefault()
      btnToggleView.checked = !btnToggleView.checked
      toggleView()
    }
  })
}
class Renderer {
  #vertexSrc = "#version 300 es\nprecision highp float;\nin vec4 position;\nvoid main(){gl_Position=position;}"
  #fragmtSrc = "#version 300 es\nprecision highp float;\nout vec4 O;\nuniform float time;\nuniform vec2 resolution;\nvoid main() {\n\tvec2 uv=gl_FragCoord.xy/resolution;\n\tO=vec4(uv,sin(time)*.5+.5,1);\n}"
  #vertices = [-1, 1, -1, -1, 1, 1, 1, -1]
  constructor(canvas, scale) {
    this.canvas = canvas
    this.scale = scale
    this.gl = canvas.getContext("webgl2")
    this.gl.viewport(0, 0, canvas.width * scale, canvas.height * scale)
    this.shaderSource = this.#fragmtSrc
    this.mouseCoords = [0, 0]
    this.pointerCoords = [0, 0]
    this.nbrOfPointers = 0
  }
  get defaultSource() { return this.#fragmtSrc }
  updateShader(source) {
    this.reset()
    this.shaderSource = source
    this.setup()
    this.init()
  }
  updateMouse(coords) {
    this.mouseCoords = coords
  }
  updatePointerCoords(coords) {
    this.pointerCoords = coords
  }
  updatePointerCount(nbr) {
    this.nbrOfPointers = nbr
  }
  updateScale(scale) {
    this.scale = scale
    this.gl.viewport(0, 0, this.canvas.width * scale, this.canvas.height * scale)
  }
  compile(shader, source) {
    const gl = this.gl
    gl.shaderSource(shader, source)
    gl.compileShader(shader)

    if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)).........完整代码请登录后点击上方下载按钮下载查看