gsap+svg实现圣诞树烟花绽放动画效果代码
代码语言：html
所属分类：动画
代码描述：gsap+svg实现圣诞树烟花绽放动画效果代码，集合gsap全家桶插件实现炫酷烟花跟随鼠标绽放，圣诞树烟花绘制成型动画，文字动画，寓意2023年即将开始，明年会更好。
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,maximum-scale=1,user-scalable=no,minimal-ui,shrink-to-fit=no,viewport-fit=cover">
<meta name="apple-mobile-web-app-capable" content="yes">
<script>class ShaderProgram {
constructor( holder, options = {} ) {
options = Object.assign( {
antialias: false,
depthTest: false,
mousemove: false,
autosize: true,
msaa: 0,
vertex: `
precision highp float;
attribute vec4 a_position;
attribute vec4 a_color;
uniform float u_time;
uniform vec2 u_resolution;
uniform vec2 u_mousemove;
uniform mat4 u_projection;
varying vec4 v_color;
void main() {
gl_Position = u_projection * a_position;
gl_PointSize = (10.0 / gl_Position.w) * 100.0;
v_color = a_color;
}`,
fragment: `
precision highp float;
uniform sampler2D u_texture;
uniform int u_hasTexture;
varying vec4 v_color;
void main() {
if ( u_hasTexture == 1 ) {
gl_FragColor = v_color * texture2D(u_texture, gl_PointCoord);
} else {
gl_FragColor = v_color;
}
}`,
uniforms: {},
buffers: {},
camera: {},
texture: null,
onUpdate: ( () => {} ),
onResize: ( () => {} ),
}, options )
const uniforms = Object.assign( {
time: { type: 'float', value: 0 },
hasTexture: { type: 'int', value: 0 },
resolution: { type: 'vec2', value: [ 0, 0 ] },
mousemove: { type: 'vec2', value: [ 0, 0 ] },
projection: { type: 'mat4', value: [ 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 ] },
}, options.uniforms )
const buffers = Object.assign( {
position: { size: 3, data: [] },
color: { size: 4, data: [] },
}, options.buffers )
const camera = Object.assign( {
fov: 60,
near: 1,
far: 10000,
aspect: 1,
z: 100,
perspective: true,
}, options.camera )
const canvas = document.createElement( 'canvas' )
const gl = canvas.getContext( 'webgl', { antialias: options.antialias } )
if ( ! gl ) return false
this.count = 0
this.gl = gl
this.canvas = canvas
this.camera = camera
this.holder = holder
this.msaa = options.msaa
this.onUpdate = options.onUpdate
this.onResize = options.onResize
this.data = {}
holder.appendChild( canvas )
this.createProgram( options.vertex, options.fragment )
this.createBuffers( buffers )
this.createUniforms( uniforms )
this.updateBuffers()
this.updateUniforms()
this.createTexture( options.texture )
gl.enable( gl.BLEND )
gl.enable( gl.CULL_FACE )
gl.blendFunc( gl.SRC_ALPHA, gl.ONE )
gl[ options.depthTest ? 'enable' : 'disable' ]( gl.DEPTH_TEST )
if ( options.autosize )
window.addEventListener( 'resize', e => this.resize( e ), false )
if ( options.mousemove )
window.addEventListener( 'mousemove', e => this.mousemove( e ), false )
this.resize()
this.update = this.update.bind( this )
this.time = { start: performance.now(), old: performance.now() }
this.update()
}
mousemove( e ) {
let x = e.pageX / this.width * 2 - 1
let y = e.pageY / this.height * 2 - 1
this.uniforms.mousemove = [ x, y ]
}
resize( e ) {
const holder = this.holder
const canvas = this.canvas
const gl = this.gl
const width = this.width = holder.offsetWidth
const height = this.height = holder.offsetHeight
const aspect = this.aspect = width / height
const dpi = this.dpi = Math.max( this.msaa ? 2 : 1, devicePixelRatio )
canvas.width = width * dpi
canvas.height = height * dpi
canvas.style.width = width + 'px'
canvas.style.height = height + 'px'
gl.viewport( 0, 0, width * dpi, height * dpi )
gl.clearColor( 0, 0, 0, 0 )
this.uniforms.resolution = [ width, height ]
this.uniforms.projection = this.setProjection( aspect )
this.onResize( width, height, dpi )
}
setProjection( aspect ) {
const camera = this.camera
if ( camera.perspective ) {
camera.aspect = aspect
const fovRad = camera.fov * ( Math.PI / 180 )
const f = Math.tan( Math.PI * 0.5 - 0.5 * fovRad )
const rangeInv = 1.0 / ( camera.near - camera.far )
const matrix = [
f / camera.aspect, 0, 0, 0,
0, f, 0, 0,
0, 0, (camera.near + camera.far) * rangeInv, -1,
0, 0, camera.near * camera.far * rangeInv * 2, 0
]
matrix[ 14 ] += camera.z
matrix[ 15 ] += camera.z
return matrix
} else {
return [
2 / this.width, 0, 0, 0,
0, -2 / this.height, 0, 0,
0, 0, 1, 0,
-1, 1, 0, 1,
]
}
}
createShader( type, source ) {
const gl = this.gl
const shader = gl.createShader( type )
gl.shaderSource( shader, source )
gl.compileShader( shader )
if ( gl.getShaderParameter (shader, gl.COMPILE_STATUS ) ) {
return shader
} else {
console.log( gl.getShaderInfoLog( shader ) )
gl.deleteShader( shader )
}
}
createProgram( vertex, fragment ) {
const gl = this.gl
const vertexShader = this.createShader( gl.VERTEX_SHADER, vertex )
const fragmentShader = this.createShader( gl.FRAGMENT_SHADER, fragment )
const program = gl.createProgram()
gl.attachShader( program, vertexShader )
gl.attachShader( program, fragmentShader )
gl.linkProgram( program )
if ( gl.getProgramParameter( program, gl.LINK_STATUS ) ) {
gl.useProgram( program )
this.program = program
} else {
console.log( gl.getProgramInfoLog( program ) )
gl.deleteProgram( program )
}
}
createUniforms( data ) {
const gl = this.gl
const uniforms = this.data.uniforms = data
const values = this.uniforms = {}
Object.keys( uniforms ).forEach( name => {
const uniform = uniforms[ name ]
uniform.location = gl.getUniformLocation( this.program, 'u_' + name )
Object.defineProperty( values, name, {
set: value => {
uniforms[ name ].value = value
this.setUniform( name, value )
},
get: () => uniforms[ name ].value
} )
} )
}
setUniform( name, value ) {
const gl = this.gl
const uniform = this.data.uniforms[ name ]
uniform.value = value
switch ( uniform.type ) {
case 'int': {
gl.uniform1i( uniform.location, value )
break
}
case 'float': {
gl.uniform1f( uniform.location, value )
break
}
case 'vec2': {
gl.uniform2f( uniform.location, ...value )
break
}
case 'vec3': {
gl.uniform3f( uniform.location, ...value )
break
}
case 'vec4': {
gl.uniform4f( uniform.location, ...value )
break
}
case 'mat2': {
gl.uniformMatrix2fv( uniform.location, false, value )
break
}
case 'mat3': {
gl.uniformMatrix3fv( uniform.location, false, value )
break
}
case 'mat4': {
gl.uniformMatrix4fv( uniform.location, false, value )
break
}
}
// ivec2 : uniform2i,
// ivec3 : uniform3i,
// ivec4 : uniform4i,
// sampler2D : uniform1i,
// samplerCube : uniform1i,
// bool : uniform1i,
// bvec2 : uniform2i,
// bvec3 : uniform3i,
// bvec4 : uniform4i,
}
updateUniforms() {
const gl = this.gl
const uniforms = this.data.uniforms
Object.keys( uniforms ).forEach( name => {
const uniform = uniforms[ name ]
this.uniforms[ name ] = uniform.value
} )
}
createBuffers( data ) {
const gl = this.gl
const buffers = this.data.buffers = data
const values = this.buffers = {}
Object.keys( buffers ).forEach( name => {
const buffer = buffers[ name ]
buffer.buffer = this.createBuffer( 'a_' + name, buffer.size )
Object.defineProperty( values, name, {
set: data => {
buffers[ name ].data = data
this.setBuffer( name, data )
if ( name == 'position' )
this.count = buffers.position.data.length / 3
},
get: () => buffers[ name ].data
} )
} )
}
createBuffer( name, size ) {
const gl = this.gl
const program = this.program
const index = gl.getAttribLocation( program, name )
const buffer = gl.createBuffer()
gl.bindBuffer( gl.ARRAY_BUFFER, buffer )
gl.enableVertexAttribArray( index )
gl.vertexAttribPointer( index, size, gl.FLOAT, false, 0, 0 )
return buffer
}
setBuffer( name, data ) {
const gl = this.gl
const buffers = this.data.buffers
if ( name == null && ! gl.bindBuffer( gl.ARRAY_BUFFER, null ) ) return
gl.bindBuffer( gl.ARRAY_BUFFER, buffers[ name ].buffer )
gl.bufferData( gl.ARRAY_BUFFER, new Float32Array( data ), gl.STATIC_DRAW )
}
updateBuffers() {
const gl = this.gl
const buffers = this.buffers
Object.keys( buffers ).forEach( name =>
buffers[ name ] = buffer.data
)
this.setBuffer( null )
}
createTexture( src ) {
const gl = this.gl
const texture = gl.createTexture()
gl.bindTexture( gl.TEXTURE_2D, texture )
gl.texImage2D( gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array( [ 0, 0, 0, 0 ] ) )
this.texture = texture
if ( src ) {
this.uniforms.hasTexture = 1
this.loadTexture( src )
}
}
loadTexture( src ) {
const gl = this.gl
const texture = this.texture
const textureImage = new Image()
textureImage.onload = () => {
gl.bindTexture( gl.TEXTURE_2D, texture )
gl.texImage2D( gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, textureImage )
gl.texParameteri( gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR )
gl.texParameteri( gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR )
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
// gl.generateMipmap( gl.TEXTURE_2D )
}
textureImage.src = src
}
update() {
const gl = this.gl
const now = performance.now()
const elapsed = ( now - this.time.start ) / 5000
const delta = now - this.time.old
this.time.old = now
this.uniforms.time = elapsed
if ( this.count > 0 ) {
gl.clear( gl.COLORBUFFERBIT )
gl.drawArrays( gl.POINTS, 0, this.count )
}
this.onUpdate( delta )
requestAnimationFrame( this.update )
}
}</script>
<style>
*,
*::after,
*::before {
box-sizing: border-box;
margin: 0;
-webkit-tap-highlight-color: transparent;
font-family: sans-serif;
letter-spacing: 1px;
}
:root {
font-size: 2.2ch;
}
html {
display: block;
page-transition-tag: root;
}
body {
width: 100%;
height: 100dvh;
min-height: 100%;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
content-visibility: auto;
contain-intrinsic-size: 350px;
container-type: inline-size;
transform: translateZ(0) translate3d(0, 0, 0);
transform-style: preserve-3d;
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-ms-perspective: 1000;
perspective: 1000;
}
#snow {
display: block;
position: fixed;
left: 0;
top: 0;
right: 0;
bottom: 0;
background-color: #040b0e;
background-image: linear-gradient(to bottom, #040b0e, #000);
will-change: opacity, visibility;
}
/*partocles artificio*/
#particles {
margin: 0;
display: block;
width: 100%;
height: 100%;
position: fixed;
left: 0;
top: 0;
right: 0;
bottom: 0;
mix-blend-mode: difference;
-webkit-mix-blend-mode: difference;
overflow: hidden;
}
#fuori_artificio {
width: 100vw;
height: 100vh;
}
/*text effect*/
.albero {
position: relative;
z-index: 1;
pointer-events: none;
}
.albero svg {
width: 95%;
height: 95%;
visibility: hidden;
}
.sparkle {
mix-blend-mode: luminosity;
}
/*augurio*/
.augurio {
opacity: 0;
color: white;
}
.augurio,
.mask {
position: relative;
width: auto;
height: auto;
text-align: center;
z-index: 2;
padding: 2em;
pointer-events: auto;
color: white;
}
/*.mask{color:transparent}*/
/*.mask {
-webkit-mask-image: -webkit-linear-gradient(
left,
rgba(0, 0, 0, 1) 0%,
rgba(0, 0, 0, 0) 0%,
rgba(0, 0, 0, 0) 100%
);
}*/
.split-line {
overflow: hidden;
}
.split-line * * {
visibility: hidden;
will-change: transform, opacity;
}
</style>
</head>
<body >
<div id="snow" aria-hidden="true"></div>
<div id='particles' aria-hidden="true">
<canvas id="fuori_artificio" width="550" height="500" aria-hidden="true"></canvas>
</div>
<div class="albero">
<svg role="img" aria-label="A shining Christmas Tree animated" class="mainSVG" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 800 600">
<defs>
<circle id="circ" class="particle" cx="0" cy="0" r="1" />
<polygon id="star" class="particle" points="4.55,0 5.95,2.85 9.1,3.3 6.82,5.52 7.36,8.65 4.55,7.17 1.74,8.65 2.27,5.52 0,3.3 3.14,2.85 " />
<polygon id="cross" class="particle" points="4,3.5 2.5,2 4,0.5 3.5,0 2,1.5 0.5,0 0,0.5 1.5,2 0,3.5 0.5,4 2,2.5 3.5,4 " />
<path id="heart" class="particle" d="M2.9,0C2.53,0,2.2,0.18,2,0.47C1.8,0.18,1.47,0,1.1,0C0.49,0,0,0.49,0,1.1
C0,2.6,1.56,4,2,4s2-1.4,2-2.9C4,0.49,3.51,0,2.9,0z" />
<radialGradient id="grad" cx="3" cy="3" r="6" gradientUnits="userSpaceOnUse">
<stop offset="0" style="stop-color:red" />
<stop offset="0.4" style="stop-color:#334673" />
<stop offset="0.6" style="stop-color:#EDDDC4" />
<stop offset="0.9" style="stop-color:#FEE8C7" />
<stop offset="1" style="stop-color:red" />
</radialGradient>
<radialGradient id="dotGrad" cx="0" cy="0" r="50" gradientUnits="userSpaceOnUse">
<stop offset="0" style="stop-color:#FFFFFF;stop-opacity:1" />
<stop offset="0.1" style="stop-color:#0867C7;stop-opacity:0.6" />
<stop offset="1" style="stop-color:#081029;stop-opacity:0" />
</radialGradient>
<mask id="treePathMask">
<path class="treePathMask" fill="none" stroke-width="18" stroke="#FFF" d="M252.9,447.9c0,0-30.8-21.6,33.9-44.7c64.7-23.1,46.2-37,33.9-41.6
c-12.3-4.6-59.3-11.6-42.4-28.5s114-52.4,81.7-66.2c-32.4-13.9-58.5-10.8-35.4-29.3s66.2-101.7,70.9-115.6
c4.4-13.2,16.9-18.5,24.7,0c7.7,18.5,44.7,100.1,67.........完整代码请登录后点击上方下载按钮下载查看
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