• Web前端项目-页面动态背景【附完整源码】

    页面动态背景

    一：花瓣背景

    页面效果：
    在这里插入图片描述

    HTML代码

    DOCTYPE HTML>
<HTML>
<TITLE>花瓣漫舞TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<style>
    html,
    body {
        width: 100%;
        height: 100%;
        margin: 0;
        padding: 0;
        overflow: hidden;
    }

    .container {
        width: 100%;
        height: 100%;
        margin: 0;
        padding: 0;
        background-color: rgba(224, 76, 186, 0.56);
    }
style>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js">script>
HEAD>
<BODY>

    <div id="jsi-cherry-container" class="container">div>
    <script>
        var RENDERER = {
            INIT_CHERRY_BLOSSOM_COUNT: 30,
            MAX_ADDING_INTERVAL: 10,

            init: function () {
                this.setParameters();
                this.reconstructMethods();
                this.createCherries();
                this.render();
            },
            setParameters: function () {
                this.$container = $('#jsi-cherry-container');
                this.width = this.$container.width();
                this.height = this.$container.height();
                this.context = $('').attr({ width: this.width, height: this.height }).appendTo(this.$container).get(0).getContext('2d');
                this.cherries = [];
                this.maxAddingInterval = Math.round(this.MAX_ADDING_INTERVAL * 1000 / this.width);
                this.addingInterval = this.maxAddingInterval;
            },
            reconstructMethods: function () {
                this.render = this.render.bind(this);
            },
            createCherries: function () {
                for (var i = 0, length = Math.round(this.INIT_CHERRY_BLOSSOM_COUNT * this.width / 1000); i < length; i++) {
                    this.cherries.push(new CHERRY_BLOSSOM(this, true));
                }
            },
            render: function () {
                requestAnimationFrame(this.render);
                this.context.clearRect(0, 0, this.width, this.height);

                this.cherries.sort(function (cherry1, cherry2) {
                    return cherry1.z - cherry2.z;
                });
                for (var i = this.cherries.length - 1; i >= 0; i--) {
                    if (!this.cherries[i].render(this.context)) {
                        this.cherries.splice(i, 1);
                    }
                }
                if (--this.addingInterval == 0) {
                    this.addingInterval = this.maxAddingInterval;
                    this.cherries.push(new CHERRY_BLOSSOM(this, false));
                }
            }
        };
        var CHERRY_BLOSSOM = function (renderer, isRandom) {
            this.renderer = renderer;
            this.init(isRandom);
        };
        CHERRY_BLOSSOM.prototype = {
            FOCUS_POSITION: 300,
            FAR_LIMIT: 600,
            MAX_RIPPLE_COUNT: 100,
            RIPPLE_RADIUS: 100,
            SURFACE_RATE: 0.5,
            SINK_OFFSET: 20,

            init: function (isRandom) {
                this.x = this.getRandomValue(-this.renderer.width, this.renderer.width);
                this.y = isRandom ? this.getRandomValue(0, this.renderer.height) : this.renderer.height * 1.5;
                this.z = this.getRandomValue(0, this.FAR_LIMIT);
                this.vx = this.getRandomValue(-2, 2);
                this.vy = -2;
                this.theta = this.getRandomValue(0, Math.PI * 2);
                this.phi = this.getRandomValue(0, Math.PI * 2);
                this.psi = 0;
                this.dpsi = this.getRandomValue(Math.PI / 600, Math.PI / 300);
                this.opacity = 0;
                this.endTheta = false;
                this.endPhi = false;
                this.rippleCount = 0;

                var axis = this.getAxis(),
                    theta = this.theta + Math.ceil(-(this.y + this.renderer.height * this.SURFACE_RATE) / this.vy) * Math.PI / 500;
                theta %= Math.PI * 2;

                this.offsetY = 40 * ((theta <= Math.PI / 2 || theta >= Math.PI * 3 / 2) ? -1 : 1);
                this.thresholdY = this.renderer.height / 2 + this.renderer.height * this.SURFACE_RATE * axis.rate;
                this.entityColor = this.renderer.context.createRadialGradient(0, 40, 0, 0, 40, 80);
                this.entityColor.addColorStop(0, 'hsl(330, 70%, ' + 50 * (0.3 + axis.rate) + '%)');
                this.entityColor.addColorStop(0.05, 'hsl(330, 40%,' + 55 * (0.3 + axis.rate) + '%)');
                this.entityColor.addColorStop(1, 'hsl(330, 20%, ' + 70 * (0.3 + axis.rate) + '%)');
                this.shadowColor = this.renderer.context.createRadialGradient(0, 40, 0, 0, 40, 80);
                this.shadowColor.addColorStop(0, 'hsl(330, 40%, ' + 30 * (0.3 + axis.rate) + '%)');
                this.shadowColor.addColorStop(0.05, 'hsl(330, 40%,' + 30 * (0.3 + axis.rate) + '%)');
                this.shadowColor.addColorStop(1, 'hsl(330, 20%, ' + 40 * (0.3 + axis.rate) + '%)');
            },
            getRandomValue: function (min, max) {
                return min + (max - min) * Math.random();
            },
            getAxis: function () {
                var rate = this.FOCUS_POSITION / (this.z + this.FOCUS_POSITION),
                    x = this.renderer.width / 2 + this.x * rate,
                    y = this.renderer.height / 2 - this.y * rate;
                return { rate: rate, x: x, y: y };
            },
            renderCherry: function (context, axis) {
                context.beginPath();
                context.moveTo(0, 40);
                context.bezierCurveTo(-60, 20, -10, -60, 0, -20);
                context.bezierCurveTo(10, -60, 60, 20, 0, 40);
                context.fill();

                for (var i = -4; i < 4; i++) {
                    context.beginPath();
                    context.moveTo(0, 40);
                    context.quadraticCurveTo(i * 12, 10, i * 4, -24 + Math.abs(i) * 2);
                    context.stroke();
                }
            },
            render: function (context) {
                var axis = this.getAxis();

                if (axis.y == this.thresholdY && this.rippleCount < this.MAX_RIPPLE_COUNT) {
                    context.save();
                    context.lineWidth = 2;
                    context.strokeStyle = 'hsla(0, 0%, 100%, ' + (this.MAX_RIPPLE_COUNT - this.rippleCount) / this.MAX_RIPPLE_COUNT + ')';
                    context.translate(axis.x + this.offsetY * axis.rate * (this.theta <= Math.PI ? -1 : 1), axis.y);
                    context.scale(1, 0.3);
                    context.beginPath();
                    context.arc(0, 0, this.rippleCount / this.MAX_RIPPLE_COUNT * this.RIPPLE_RADIUS * axis.rate, 0, Math.PI * 2, false);
                    context.stroke();
                    context.restore();
                    this.rippleCount++;
                }
                if (axis.y < this.thresholdY || (!this.endTheta || !this.endPhi)) {
                    if (this.y <= 0) {
                        this.opacity = Math.min(this.opacity + 0.01, 1);
                    }
                    context.save();
                    context.globalAlpha = this.opacity;
                    context.fillStyle = this.shadowColor;
                    context.strokeStyle = 'hsl(330, 30%,' + 40 * (0.3 + axis.rate) + '%)';
                    context.translate(axis.x, Math.max(axis.y, this.thresholdY + this.thresholdY - axis.y));
                    context.rotate(Math.PI - this.theta);
                    context.scale(axis.rate * -Math.sin(this.phi), axis.rate);
                    context.translate(0, this.offsetY);
                    this.renderCherry(context, axis);
                    context.restore();
                }
                context.save();
                context.fillStyle = this.entityColor;
                context.strokeStyle = 'hsl(330, 40%,' + 70 * (0.3 + axis.rate) + '%)';
                context.translate(axis.x, axis.y + Math.abs(this.SINK_OFFSET * Math.sin(this.psi) * axis.rate));
                context.rotate(this.theta);
                context.scale(axis.rate * Math.sin(this.phi), axis.rate);
                context.translate(0, this.offsetY);
                this.renderCherry(context, axis);
                context.restore();

                if (this.y <= -this.renderer.height / 4) {
                    if (!this.endTheta) {
                        for (var theta = Math.PI / 2, end = Math.PI * 3 / 2; theta <= end; theta += Math.PI) {
                            if (this.theta < theta && this.theta + Math.PI / 200 > theta) {
                                this.theta = theta;
                                this.endTheta = true;
                                break;
                            }
                        }
                    }
                    if (!this.endPhi) {
                        for (var phi = Math.PI / 8, end = Math.PI * 7 / 8; phi <= end; phi += Math.PI * 3 / 4) {
                            if (this.phi < phi && this.phi + Math.PI / 200 > phi) {
                                this.phi = Math.PI / 8;
                                this.endPhi = true;
                                break;
                            }
                        }
                    }
                }
                if (!this.endTheta) {
                    if (axis.y == this.thresholdY) {
                        this.theta += Math.PI / 200 * ((this.theta < Math.PI / 2 || (this.theta >= Math.PI && this.theta < Math.PI * 3 / 2)) ? 1 : -1);
                    } else {
                        this.theta += Math.PI / 500;
                    }
                    this.theta %= Math.PI * 2;
                }
                if (this.endPhi) {
                    if (this.rippleCount == this.MAX_RIPPLE_COUNT) {
                        this.psi += this.dpsi;
                        this.psi %= Math.PI * 2;
                    }
                } else {
                    this.phi += Math.PI / ((axis.y == this.thresholdY) ? 200 : 500);
                    this.phi %= Math.PI;
                }
                if (this.y <= -this.renderer.height * this.SURFACE_RATE) {
                    this.x += 2;
                    this.y = -this.renderer.height * this.SURFACE_RATE;
                } else {
                    this.x += this.vx;
                    this.y += this.vy;
                }
                return this.z > -this.FOCUS_POSITION && this.z < this.FAR_LIMIT && this.x < this.renderer.width * 1.5;
            }
        };
        $(function () {
            RENDERER.init();
        });
    script>
BODY>
HTML>

    二：爱心背景

    页面效果：用鼠标滑动会出现更多的爱心哦~
    在这里插入图片描述

    HTML代码

    doctype html>
<html>

<head>
  <meta charset="utf-8">
  <title>爱心❤title>

  <style>
    body {
      overflow: hidden;
      margin: 0;
      background: pink;
    }
  style>

head>

<body>

  <canvas>canvas>
  <script>
    var canvas = document.querySelector("canvas"),
      ctx = canvas.getContext("2d");

    var ww, wh;

    function onResize() {
      ww = canvas.width = window.innerWidth;
      wh = canvas.height = window.innerHeight;
    }

    ctx.strokeStyle = "red";
    ctx.shadowBlur = 25;
    ctx.shadowColor = "hsla(0, 100%, 60%,0.5)";

    var precision = 100;
    var hearts = [];
    var mouseMoved = false;
    function onMove(e) {
      mouseMoved = true;
      if (e.type === "touchmove") {
        hearts.push(new Heart(e.touches[0].clientX, e.touches[0].clientY));
        hearts.push(new Heart(e.touches[0].clientX, e.touches[0].clientY));
      }
      else {
        hearts.push(new Heart(e.clientX, e.clientY));
        hearts.push(new Heart(e.clientX, e.clientY));
      }
    }

    var Heart = function (x, y) {
      this.x = x || Math.random() * ww;
      this.y = y || Math.random() * wh;
      this.size = Math.random() * 2 + 1;
      this.shadowBlur = Math.random() * 10;
      this.speedX = (Math.random() + 0.2 - 0.6) * 8;
      this.speedY = (Math.random() + 0.2 - 0.6) * 8;
      this.speedSize = Math.random() * 0.05 + 0.01;
      this.opacity = 1;
      this.vertices = [];
      for (var i = 0; i < precision; i++) {
        var step = (i / precision - 0.5) * (Math.PI * 2);
        var vector = {
          x: (15 * Math.pow(Math.sin(step), 3)),
          y: -(13 * Math.cos(step) - 5 * Math.cos(2 * step) - 2 * Math.cos(3 * step) - Math.cos(4 * step))
        }
        this.vertices.push(vector);
      }
    }

    Heart.prototype.draw = function () {
      this.size -= this.speedSize;
      this.x += this.speedX;
      this.y += this.speedY;
      ctx.save();
      ctx.translate(-1000, this.y);
      ctx.scale(this.size, this.size);
      ctx.beginPath();
      for (var i = 0; i < precision; i++) {
        var vector = this.vertices[i];
        ctx.lineTo(vector.x, vector.y);
      }
      ctx.globalAlpha = this.size;
      ctx.shadowBlur = Math.round((3 - this.size) * 10);
      ctx.shadowColor = "hsla(0, 100%, 60%,0.5)";
      ctx.shadowOffsetX = this.x + 1000;
      ctx.globalCompositeOperation = "screen"
      ctx.closePath();
      ctx.fill()
      ctx.restore();
    };


    function render(a) {
      requestAnimationFrame(render);

      hearts.push(new Heart())
      ctx.clearRect(0, 0, ww, wh);
      for (var i = 0; i < hearts.length; i++) {
        hearts[i].draw();
        if (hearts[i].size <= 0) {
          hearts.splice(i, 1);
          i--;
        }
      }
    }
      
    onResize();
    window.addEventListener("mousemove", onMove);
    window.addEventListener("touchmove", onMove);
    window.addEventListener("resize", onResize);
    requestAnimationFrame(render);
  script>
    
body>
    
html>

    三：飞雪背景

    页面效果：
    在这里插入图片描述

    HTML代码

    DOCTYPE html>

<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<title>飞雪title>

	<style type="text/css">
		body {
			background-color: #101013;
			margin: 0px;
			overflow: hidden;
		}
	style>

head>

<body onLoad="init()">

	<script type="text/javascript" src="js/ThreeCanvas.js">script>
	<script type="text/javascript" src="js/Snow.js">script>
	<script type="text/javascript">
		var SCREEN_WIDTH = window.innerWidth;
		var SCREEN_HEIGHT = window.innerHeight;

		var container;

		var particle;

		var camera;
		var scene;
		var renderer;

		var mouseX = 0;
		var mouseY = 0;

		var windowHalfX = window.innerWidth / 2;
		var windowHalfY = window.innerHeight / 2;

		var particles = [];
		var particleImage = new Image();
		particleImage.src = 'images/ParticleSmoke.png';



		function init() {

			container = document.createElement('div');
			document.body.appendChild(container);

			camera = new THREE.PerspectiveCamera(75, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 10000);
			camera.position.z = 1000;

			scene = new THREE.Scene();
			scene.add(camera);

			renderer = new THREE.CanvasRenderer();
			renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
			var material = new THREE.ParticleBasicMaterial({ map: new THREE.Texture(particleImage) });

			for (var i = 0; i < 500; i++) {

				particle = new Particle3D(material);
				particle.position.x = Math.random() * 2000 - 1000;
				particle.position.y = Math.random() * 2000 - 1000;
				particle.position.z = Math.random() * 2000 - 1000;
				particle.scale.x = particle.scale.y = 1;
				scene.add(particle);

				particles.push(particle);
			}

			container.appendChild(renderer.domElement);


			document.addEventListener('mousemove', onDocumentMouseMove, false);
			document.addEventListener('touchstart', onDocumentTouchStart, false);
			document.addEventListener('touchmove', onDocumentTouchMove, false);

			setInterval(loop, 1000 / 60);

		}

		function onDocumentMouseMove(event) {

			mouseX = event.clientX - windowHalfX;
			mouseY = event.clientY - windowHalfY;
		}

		function onDocumentTouchStart(event) {

			if (event.touches.length == 1) {

				event.preventDefault();

				mouseX = event.touches[0].pageX - windowHalfX;
				mouseY = event.touches[0].pageY - windowHalfY;
			}
		}

		function onDocumentTouchMove(event) {

			if (event.touches.length == 1) {

				event.preventDefault();

				mouseX = event.touches[0].pageX - windowHalfX;
				mouseY = event.touches[0].pageY - windowHalfY;
			}
		}

		function loop() {

			for (var i = 0; i < particles.length; i++) {

				var particle = particles[i];
				particle.updatePhysics();

				with (particle.position) {
					if (y < -1000) y += 2000;
					if (x > 1000) x -= 2000;
					else if (x < -1000) x += 2000;
					if (z > 1000) z -= 2000;
					else if (z < -1000) z += 2000;
				}
			}

			camera.position.x += (mouseX - camera.position.x) * 0.05;
			camera.position.y += (- mouseY - camera.position.y) * 0.05;
			camera.lookAt(scene.position);

			renderer.render(scene, camera);

		}
	script>
body>

html>

    JS文件包

    （1）Snow.js
    Particle3D=function(material){
	THREE.Particle.call(this,material);
	this.velocity=new THREE.Vector3(0,-8,0);
	this.velocity.rotateX(randomRange(-45,45));
	this.velocity.rotateY(randomRange(0,360));
	this.gravity=new THREE.Vector3(0,0,0);
	this.drag=1;
};
Particle3D.prototype=new THREE.Particle();
Particle3D.prototype.constructor=Particle3D;
Particle3D.prototype.updatePhysics=function(){
	this.velocity.multiplyScalar(this.drag);
	this.velocity.addSelf(this.gravity);
	this.position.addSelf(this.velocity);
}
var TO_RADIANS=Math.PI/180;
THREE.Vector3.prototype.rotateY=function(angle){
	cosRY=Math.cos(angle*TO_RADIANS);
	sinRY=Math.sin(angle*TO_RADIANS);
	var tempz=this.z;;
	var tempx=this.x;
	this.x=(tempx*cosRY)+(tempz*sinRY);
	this.z=(tempx*-sinRY)+(tempz*cosRY);
}
THREE.Vector3.prototype.rotateX=function(angle){
	cosRY=Math.cos(angle*TO_RADIANS);
	sinRY=Math.sin(angle*TO_RADIANS);
	var tempz=this.z;;
	var tempy=this.y;
	this.y=(tempy*cosRY)+(tempz*sinRY);
	this.z=(tempy*-sinRY)+(tempz*cosRY);
}
THREE.Vector3.prototype.rotateZ=function(angle){
	cosRY=Math.cos(angle*TO_RADIANS);
	sinRY=Math.sin(angle*TO_RADIANS);
	var tempx=this.x;;
	var tempy=this.y;
	this.y=(tempy*cosRY)+(tempx*sinRY);
	this.x=(tempy*-sinRY)+(tempx*cosRY);
}
function randomRange(min,max){
	return((Math.random()*(max-min))+ min);
}
    （2）ThreeCanvas.js
    var THREE=THREE||{};if(!self.Int32Array)self.Int32Array=Array,self.Float32Array=Array;THREE.Color=function(a){a!==void 0&&this.setHex(a);return this};THREE.Color.prototype={constructor:THREE.Color,r:1,g:1,b:1,copy:function(a){this.r=a.r;this.g=a.g;this.b=a.b;return this},copyGammaToLinear:function(a){this.r=a.r*a.r;this.g=a.g*a.g;this.b=a.b*a.b;return this},copyLinearToGamma:function(a){this.r=Math.sqrt(a.r);this.g=Math.sqrt(a.g);this.b=Math.sqrt(a.b);return this},setRGB:function(a,b,c){this.r=a;this.g=b;this.b=c;return this},setHSV:function(a,b,c){var d,f,e;if(c===0)this.r=this.g=this.b=0;else switch(d=Math.floor(a*6),f=a*6-d,a=c*(1-b),e=c*(1-
b*f),b=c*(1-b*(1-f)),d){case 1:this.r=e;this.g=c;this.b=a;break;case 2:this.r=a;this.g=c;this.b=b;break;case 3:this.r=a;this.g=e;this.b=c;break;case 4:this.r=b;this.g=a;this.b=c;break;case 5:this.r=c;this.g=a;this.b=e;break;case 6:case 0:this.r=c,this.g=b,this.b=a}return this},setHex:function(a){a=Math.floor(a);this.r=(a>>16&255)/255;this.g=(a>>8&255)/255;this.b=(a&255)/255;return this},getHex:function(){return~~(this.r*255)<<16^~~(this.g*255)<<8^~~(this.b*255)},getContextStyle:function(){return"rgb("+
Math.floor(this.r*255)+","+Math.floor(this.g*255)+","+Math.floor(this.b*255)+")"},clone:function(){return(new THREE.Color).setRGB(this.r,this.g,this.b)}};THREE.Vector2=function(a,b){this.x=a||0;this.y=b||0};THREE.Vector2.prototype={constructor:THREE.Vector2,set:function(a,b){this.x=a;this.y=b;return this},copy:function(a){this.x=a.x;this.y=a.y;return this},clone:function(){return new THREE.Vector2(this.x,this.y)},add:function(a,b){this.x=a.x+b.x;this.y=a.y+b.y;return this},addSelf:function(a){this.x+=a.x;this.y+=a.y;return this},sub:function(a,b){this.x=a.x-b.x;this.y=a.y-b.y;return this},subSelf:function(a){this.x-=a.x;this.y-=a.y;return this},multiplyScalar:function(a){this.x*=a;this.y*=a;return this},divideScalar:function(a){a?(this.x/=a,this.y/=a):this.set(0,0);return this},negate:function(){return this.multiplyScalar(-1)},dot:function(a){return this.x*a.x+this.y*a.y},lengthSq:function(){return this.x*this.x+this.y*this.y},length:function(){return Math.sqrt(this.lengthSq())},normalize:function(){return this.divideScalar(this.length())},distanceTo:function(a){return Math.sqrt(this.distanceToSquared(a))},distanceToSquared:function(a){var b=this.x-a.x,a=this.y-a.y;return b*b+a*a},setLength:function(a){return this.normalize().multiplyScalar(a)},equals:function(a){return a.x===this.x&&a.y===this.y}};THREE.Vector3=function(a,b,c){this.x=a||0;this.y=b||0;this.z=c||0};THREE.Vector3.prototype={constructor:THREE.Vector3,set:function(a,b,c){this.x=a;this.y=b;this.z=c;return this},setX:function(a){this.x=a;return this},setY:function(a){this.y=a;return this},setZ:function(a){this.z=a;return this},copy:function(a){this.x=a.x;this.y=a.y;this.z=a.z;return this},clone:function(){return new THREE.Vector3(this.x,this.y,this.z)},add:function(a,b){this.x=a.x+b.x;this.y=a.y+b.y;this.z=a.z+b.z;return this},addSelf:function(a){this.x+=a.x;this.y+=a.y;this.z+=a.z;return this},addScalar:function(a){this.x+=a;this.y+=a;this.z+=a;return this},sub:function(a,b){this.x=a.x-b.x;this.y=a.y-b.y;this.z=a.z-b.z;return this},subSelf:function(a){this.x-=a.x;this.y-=a.y;this.z-=a.z;return this},multiply:function(a,b){this.x=a.x*b.x;this.y=a.y*b.y;this.z=a.z*b.z;return this},multiplySelf:function(a){this.x*=a.x;this.y*=a.y;this.z*=a.z;return this},multiplyScalar:function(a){this.x*=a;this.y*=a;this.z*=a;return this},divideSelf:function(a){this.x/=a.x;this.y/=a.y;this.z/=a.z;return this},divideScalar:function(a){a?(this.x/=a,this.y/=a,this.z/=a):this.z=this.y=this.x=0;return this},negate:function(){return this.multiplyScalar(-1)},dot:function(a){return this.x*a.x+this.y*a.y+this.z*a.z},lengthSq:function(){return this.x*this.x+this.y*this.y+this.z*this.z},length:function(){return Math.sqrt(this.lengthSq())},lengthManhattan:function(){return this.x+this.y+this.z},normalize:function(){return this.divideScalar(this.length())},setLength:function(a){return this.normalize().multiplyScalar(a)},cross:function(a,b){this.x=a.y*b.z-a.z*b.y;this.y=a.z*b.x-a.x*b.z;this.z=a.x*b.y-a.y*b.x;return this},crossSelf:function(a){var b=this.x,c=this.y,d=this.z;this.x=c*a.z-d*a.y;this.y=d*a.x-b*a.z;this.z=b*a.y-c*a.x;return this},distanceTo:function(a){return Math.sqrt(this.distanceToSquared(a))},distanceToSquared:function(a){return(new THREE.Vector3).sub(this,a).lengthSq()},setPositionFromMatrix:function(a){this.x=a.n14;this.y=a.n24;this.z=a.n34},setRotationFromMatrix:function(a){var b=Math.cos(this.y);this.y=Math.asin(a.n13);Math.abs(b)>1.0E-5?(this.x=Math.atan2(-a.n23/b,a.n33/b),this.z=Math.atan2(-a.n12/b,a.n11/b)):(this.x=0,this.z=Math.atan2(a.n21,a.n22))},isZero:function(){return this.lengthSq()<1.0E-4}};THREE.Vector4=function(a,b,c,d){this.x=a||0;this.y=b||0;this.z=c||0;this.w=d!==void 0?d:1};THREE.Vector4.prototype={constructor:THREE.Vector4,set:function(a,b,c,d){this.x=a;this.y=b;this.z=c;this.w=d;return this},copy:function(a){this.x=a.x;this.y=a.y;this.z=a.z;this.w=a.w!==void 0?a.w:1},clone:function(){return new THREE.Vector4(this.x,this.y,this.z,this.w)},add:function(a,b){this.x=a.x+b.x;this.y=a.y+b.y;this.z=a.z+b.z;this.w=a.w+b.w;return this},addSelf:function(a){this.x+=a.x;this.y+=a.y;this.z+=a.z;this.w+=a.w;return this},sub:function(a,b){this.x=a.x-b.x;this.y=a.y-b.y;this.z=a.z-
b.z;this.w=a.w-b.w;return this},subSelf:function(a){this.x-=a.x;this.y-=a.y;this.z-=a.z;this.w-=a.w;return this},multiplyScalar:function(a){this.x*=a;this.y*=a;this.z*=a;this.w*=a;return this},divideScalar:function(a){a?(this.x/=a,this.y/=a,this.z/=a,this.w/=a):(this.z=this.y=this.x=0,this.w=1);return this},negate:function(){return this.multiplyScalar(-1)},dot:function(a){return this.x*a.x+this.y*a.y+this.z*a.z+this.w*a.w},lengthSq:function(){return this.dot(this)},length:function(){return Math.sqrt(this.lengthSq())},normalize:function(){return this.divideScalar(this.length())},setLength:function(a){return this.normalize().multiplyScalar(a)},lerpSelf:function(a,b){this.x+=(a.x-this.x)*b;this.y+=(a.y-this.y)*b;this.z+=(a.z-this.z)*b;this.w+=(a.w-this.w)*b;return this}};THREE.Ray=function(a,b){function c(a,b,c){i.sub(c,a);p=i.dot(b);if(p<=0)return null;k=n.add(a,o.copy(b).multiplyScalar(p));return s=c.distanceTo(k)}function d(a,b,c,d){i.sub(d,b);n.sub(c,b);o.sub(a,b);K=i.dot(i);C=i.dot(n);Q=i.dot(o);O=n.dot(n);w=n.dot(o);F=1/(K*O-C*C);z=(O*Q-C*w)*F;D=(K*w-C*Q)*F;return z>=0&&D>=0&&z+D<1}this.origin=a||new THREE.Vector3;this.direction=b||new THREE.Vector3;this.intersectScene=function(a){return this.intersectObjects(a.children)};this.intersectObjects=function(a){var b,c,d=[];b=0;for(c=a.length;bk.scale.x)return[];i={distance:n,point:k.position,face:null,object:k};o.push(i)}else if(k instanceof THREE.Mesh){n=c(this.origin,this.direction,k.matrixWorld.getPosition());if(n===null||n>k.geometry.boundingSphere.radius*Math.max(k.scale.x,Math.max(k.scale.y,k.scale.z)))return o;var p,G=k.geometry,H=G.vertices,I;k.matrixRotationWorld.extractRotation(k.matrixWorld);n=0;for(W=G.faces.length;n0:p<0)))if(p=l.dot(m.sub(f,a))/p,j.add(a,b.multiplyScalar(p)),i instanceof THREE.Face3)d(j,f,e,g)&&(i={distance:a.distanceTo(j),point:j.clone(),face:i,object:k},o.push(i));else if(i instanceof THREE.Face4&&(d(j,f,e,h)||d(j,e,g,h)))i={distance:a.distanceTo(j),point:j.clone(),face:i,object:k},o.push(i)}return o};var i=new THREE.Vector3,n=new THREE.Vector3,o=new THREE.Vector3,p,k,s,K,C,Q,O,w,F,z,D};THREE.Rectangle=function(){function a(){e=d-b;g=f-c}var b,c,d,f,e,g,h=!0;this.getX=function(){return b};this.getY=function(){return c};this.getWidth=function(){return e};this.getHeight=function(){return g};this.getLeft=function(){return b};this.getTop=function(){return c};this.getRight=function(){return d};this.getBottom=function(){return f};this.set=function(e,g,j,i){h=!1;b=e;c=g;d=j;f=i;a()};this.addPoint=function(e,g){h?(h=!1,b=e,c=g,d=e,f=g):(b=be?d:e,f=f>g?f:g);a()};this.add3Points=function(e,g,j,i,n,o){h?(h=!1,b=ej?e>n?e:n:j>n?j:n,f=g>i?g>o?g:o:i>o?i:o):(b=ej?e>n?e>d?e:d:n>d?n:d:j>n?j>d?j:d:n>d?n:d,f=g>i?g>o?g>f?g:f:o>f?o:f:i>o?i>f?i:f:o>f?o:f);a()};this.addRectangle=function(e){h?(h=!1,b=e.getLeft(),c=e.getTop(),d=e.getRight(),f=e.getBottom()):(b=be.getRight()?d:e.getRight(),f=f>e.getBottom()?f:e.getBottom());a()};this.inflate=function(e){b-=e;c-=e;d+=e;f+=e;a()};this.minSelf=function(e){b=b>e.getLeft()?b:e.getLeft();c=c>e.getTop()?c:e.getTop();d=d=0&&Math.min(f,a.getBottom())-Math.max(c,a.getTop())>=0};this.empty=function(){h=!0;f=d=c=b=0;a()};this.isEmpty=function(){return h}};THREE.Math={clamp:function(a,b,c){return ac?c:a},clampBottom:function(a,b){return a=0&&f>=0&&g>=0&&h>=0?!0:e<0&&f<0||g<0&&h<0?!1:(e<0?c=Math.max(c,e/(e-f)):f<0&&(d=Math.min(d,e/(e-f))),g<0?c=Math.max(c,g/(g-h)):h<0&&(d=Math.min(d,g/(g-h))),dg&&h.positionScreen.z0&&z.z<1))g=O[Q]=O[Q]||new THREE.RenderableParticle,Q++,C=g,C.x=z.x/z.w,C.y=z.y/z.w,C.z=z.z,C.rotation=J.rotation.z,C.scale.x=J.scale.x*Math.abs(C.x-(z.x+e.projectionMatrix.n11)/(z.w+e.projectionMatrix.n14)),C.scale.y=J.scale.y*Math.abs(C.y-(z.y+e.projectionMatrix.n22)/(z.w+e.projectionMatrix.n24)),C.material=J.material,w.elements.push(C);f&&w.elements.sort(c);return w}};THREE.Quaternion=function(a,b,c,d){this.set(a||0,b||0,c||0,d!==void 0?d:1)};THREE.Quaternion.prototype={constructor:THREE.Quaternion,set:function(a,b,c,d){this.x=a;this.y=b;this.z=c;this.w=d;return this},copy:function(a){this.x=a.x;this.y=a.y;this.z=a.z;this.w=a.w;return this},setFromEuler:function(a){var b=Math.PI/360,c=a.x*b,d=a.y*b,f=a.z*b,a=Math.cos(d),d=Math.sin(d),b=Math.cos(-f),f=Math.sin(-f),e=Math.cos(c),c=Math.sin(c),g=a*b,h=d*f;this.w=g*e-h*c;this.x=g*c+h*e;this.y=d*b*e+a*f*c;this.z=a*f*e-d*b*c;return this},setFromAxisAngle:function(a,b){var c=b/2,d=Math.sin(c);this.x=a.x*d;this.y=a.y*d;this.z=a.z*d;this.w=Math.cos(c);return this},setFromRotationMatrix:function(a){var b=Math.pow(a.determinant(),1/3);this.w=Math.sqrt(Math.max(0,b+a.n11+a.n22+a.n33))/2;this.x=Math.sqrt(Math.max(0,b+a.n11-a.n22-a.n33))/2;this.y=Math.sqrt(Math.max(0,b-a.n11+a.n22-a.n33))/2;this.z=Math.sqrt(Math.max(0,b-a.n11-a.n22+a.n33))/2;this.x=a.n32-a.n23<0?-Math.abs(this.x):Math.abs(this.x);this.y=a.n13-a.n31<0?-Math.abs(this.y):Math.abs(this.y);this.z=a.n21-a.n12<0?-Math.abs(this.z):Math.abs(this.z);this.normalize();return this},calculateW:function(){this.w=-Math.sqrt(Math.abs(1-this.x*this.x-this.y*this.y-this.z*this.z));return this},inverse:function(){this.x*=-1;this.y*=-1;this.z*=-1;return this},length:function(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w)},normalize:function(){var a=Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w);a===0?this.w=this.z=this.y=this.x=0:(a=1/a,this.x*=a,this.y*=a,this.z*=a,this.w*=a);return this},multiplySelf:function(a){var b=this.x,c=this.y,d=this.z,f=this.w,e=a.x,g=a.y,h=a.z,a=a.w;this.x=b*a+f*e+c*h-d*g;this.y=c*a+f*g+d*e-b*h;this.z=d*a+f*h+b*g-c*e;this.w=f*a-b*e-c*g-d*h;return this},multiply:function(a,b){this.x=a.x*b.w+a.y*b.z-a.z*b.y+a.w*b.x;this.y=-a.x*b.z+a.y*b.w+a.z*b.x+a.w*b.y;this.z=a.x*b.y-a.y*b.x+a.z*b.w+a.w*b.z;this.w=-a.x*b.x-a.y*b.y-a.z*b.z+a.w*b.w;return this},multiplyVector3:function(a,b){b||(b=a);var c=a.x,d=a.y,f=a.z,e=this.x,g=this.y,h=this.z,m=this.w,l=m*c+g*f-h*d,j=m*d+h*c-e*f,i=m*f+e*d-g*c,c=-e*c-g*d-h*f;b.x=l*m+c*-e+j*-h-i*-g;b.y=j*m+c*-g+i*-e-l*-h;b.z=i*m+c*-h+l*-g-j*-e;return b}};THREE.Quaternion.slerp=function(a,b,c,d){var f=a.w*b.w+a.x*b.x+a.y*b.y+a.z*b.z;f<0?(c.w=-b.w,c.x=-b.x,c.y=-b.y,c.z=-b.z,f=-f):c.copy(b);if(Math.abs(f)>=1)return c.w=a.w,c.x=a.x,c.y=a.y,c.z=a.z,c;var e=Math.acos(f),f=Math.sqrt(1-f*f);if(Math.abs(f)<0.001)return c.w=0.5*(a.w+b.w),c.x=0.5*(a.x+b.x),c.y=0.5*(a.y+b.y),c.z=0.5*(a.z+b.z),c;b=Math.sin((1-d)*e)/f;d=Math.sin(d*e)/f;c.w=a.w*b+c.w*d;c.x=a.x*b+c.x*d;c.y=a.y*b+c.y*d;c.z=a.z*b+c.z*d;return c};THREE.Vertex=function(a){this.position=a||new THREE.Vector3};THREE.Face3=function(a,b,c,d,f,e){this.a=a;this.b=b;this.c=c;this.normal=d instanceof THREE.Vector3?d:new THREE.Vector3;this.vertexNormals=d instanceof Array?d:[];this.color=f instanceof THREE.Color?f:new THREE.Color;this.vertexColors=f instanceof Array?f:[];this.vertexTangents=[];this.materialIndex=e;this.centroid=new THREE.Vector3};THREE.Face4=function(a,b,c,d,f,e,g){this.a=a;this.b=b;this.c=c;this.d=d;this.normal=f instanceof THREE.Vector3?f:new THREE.Vector3;this.vertexNormals=f instanceof Array?f:[];this.color=e instanceof THREE.Color?e:new THREE.Color;this.vertexColors=e instanceof Array?e:[];this.vertexTangents=[];this.materialIndex=g;this.centroid=new THREE.Vector3};THREE.UV=function(a,b){this.u=a||0;this.v=b||0};THREE.UV.prototype={constructor:THREE.UV,set:function(a,b){this.u=a;this.v=b;return this},copy:function(a){this.u=a.u;this.v=a.v;return this},clone:function(){return new THREE.UV(this.u,this.v)}};THREE.Geometry=function(){this.id=THREE.GeometryCount++;this.vertices=[];this.colors=[];this.materials=[];this.faces=[];this.faceUvs=[[]];this.faceVertexUvs=[[]];this.morphTargets=[];this.morphColors=[];this.skinWeights=[];this.skinIndices=[];this.boundingSphere=this.boundingBox=null;this.dynamic=this.hasTangents=!1};THREE.Geometry.prototype={constructor:THREE.Geometry,applyMatrix:function(a){var b=new THREE.Matrix4;b.extractRotation(a,new THREE.Vector3(1,1,1));for(var c=0,d=this.vertices.length;c0){this.boundingBox={x:[this.vertices[0].position.x,this.vertices[0].position.x],y:[this.vertices[0].position.y,this.vertices[0].position.y],z:[this.vertices[0].position.z,this.vertices[0].position.z]};for(var b=1,c=this.vertices.length;bthis.boundingBox.x[1])this.boundingBox.x[1]=a.position.x;if(a.position.ythis.boundingBox.y[1])this.boundingBox.y[1]=a.position.y;if(a.position.zthis.boundingBox.z[1])this.boundingBox.z[1]=a.position.z}}},computeBoundingSphere:function(){for(var a=0,b=0,c=this.vertices.length;b0&&(c(THREE.NormalBlending),b(1),f("rgba("+Math.floor(s.r*255)+","+Math.floor(s.g*255)+","+Math.floor(s.b*255)+","+K+")"),k.fillRect(Math.floor(Z.getX()),Math.floor(Z.getY()),Math.floor(Z.getWidth()),Math.floor(Z.getHeight()))),Z.empty())};this.render=function(a,j){function i(a){var b,c,d,e;$.setRGB(0,0,0);ta.setRGB(0,0,0);ua.setRGB(0,0,0);b=0;for(c=a.length;b>1,n=m.height>>1,g=e.scale.x*o,i=e.scale.y*p,h=g*q,j=i*n,X.set(a.x-h,a.y-j,a.x+h,a.y+j),ma.intersects(X)&&(k.save(),k.translate(a.x,a.y),k.rotate(-e.rotation),k.scale(g,-i),k.translate(-q,-n),k.drawImage(m,0,0),k.restore())}else g instanceof THREE.ParticleCanvasMaterial&&(h=e.scale.x*o,j=e.scale.y*p,X.set(a.x-h,a.y-j,a.x+h,a.y+j),ma.intersects(X)&&(d(g.color.getContextStyle()),f(g.color.getContextStyle()),k.save(),k.translate(a.x,a.y),k.rotate(-e.rotation),k.scale(h,j),g.program(k),k.restore()))}function w(a,e,f,g){b(g.opacity);c(g.blending);k.beginPath();k.moveTo(a.positionScreen.x,a.positionScreen.y);k.lineTo(e.positionScreen.x,e.positionScreen.y);k.closePath();if(g instanceof THREE.LineBasicMaterial){a=g.linewidth;if(F!=a)k.lineWidth=F=a;a=g.linecap;if(z!=a)k.lineCap=z=a;a=g.linejoin;if(D!=a)k.lineJoin=D=a;d(g.color.getContextStyle());k.stroke();X.inflate(g.linewidth*2)}}function C(a,d,f,g,h,k,i,q){e.info.render.vertices+=3;e.info.render.faces++;b(q.opacity);c(q.blending);G=a.positionScreen.x;H=a.positionScreen.y;I=d.positionScreen.x;Y=d.positionScreen.y;L=f.positionScreen.x;B=f.positionScreen.y;K(G,H,I,Y,L,B);if(q instanceof THREE.MeshBasicMaterial)if(q.map)q.map.mapping instanceof THREE.UVMapping&&(aa=i.uvs[0],Aa(G,H,I,Y,L,B,aa[g].u,aa[g].v,aa[h].u,aa[h].v,aa[k].u,aa[k].v,q.map));else if(q.envMap){if(q.envMap.mapping instanceof THREE.SphericalReflectionMapping)a=j.matrixWorldInverse,T.copy(i.vertexNormalsWorld[g]),Ba=(T.x*a.n11+T.y*a.n12+T.z*a.n13)*0.5+0.5,Ca=-(T.x*a.n21+T.y*a.n22+T.z*a.n23)*0.5+0.5,T.copy(i.vertexNormalsWorld[h]),Da=(T.x*a.n11+T.y*a.n12+T.z*a.n13)*0.5+0.5,Ea=-(T.x*a.n21+T.y*a.n22+T.z*a.n23)*0.5+0.5,T.copy(i.vertexNormalsWorld[k]),Fa=(T.x*a.n11+T.y*a.n12+T.z*a.n13)*0.5+0.5,Ga=-(T.x*a.n21+T.y*a.n22+T.z*a.n23)*0.5+0.5,Aa(G,H,I,Y,L,B,Ba,Ca,Da,Ea,Fa,Ga,q.envMap)}else q.wireframe?ja(q.color,q.wireframeLinewidth,q.wireframeLinecap,q.wireframeLinejoin):ia(q.color);else if(q instanceof THREE.MeshLambertMaterial)q.map&&!q.wireframe&&(q.map.mapping instanceof THREE.UVMapping&&(aa=i.uvs[0],Aa(G,H,I,Y,L,B,aa[g].u,aa[g].v,aa[h].u,aa[h].v,aa[k].u,aa[k].v,q.map)),c(THREE.SubtractiveBlending)),ya?!q.wireframe&&q.shading==THREE.SmoothShading&&i.vertexNormalsWorld.length==3?(A.r=x.r=y.r=$.r,A.g=x.g=y.g=$.g,A.b=x.b=y.b=$.b,n(m,i.v1.positionWorld,i.vertexNormalsWorld[0],A),n(m,i.v2.positionWorld,i.vertexNormalsWorld[1],x),n(m,i.v3.positionWorld,i.vertexNormalsWorld[2],y),A.r=Math.max(0,Math.min(q.color.r*A.r,1)),A.g=Math.max(0,Math.min(q.color.g*A.g,1)),A.b=Math.max(0,Math.min(q.color.b*A.b,1)),x.r=Math.max(0,Math.min(q.color.r*x.r,1)),x.g=Math.max(0,Math.min(q.color.g*x.g,1)),x.b=Math.max(0,Math.min(q.color.b*x.b,1)),y.r=Math.max(0,Math.min(q.color.r*y.r,1)),y.g=Math.max(0,Math.min(q.color.g*y.g,1)),y.b=Math.max(0,Math.min(q.color.b*y.b,1)),M.r=(x.r+y.r)*0.5,M.g=(x.g+y.g)*0.5,M.b=(x.b+y.b)*0.5,ea=wa(A,x,y,M),oa(G,H,I,Y,L,B,0,0,1,0,0,1,ea)):(t.r=$.r,t.g=$.g,t.b=$.b,n(m,i.centroidWorld,i.normalWorld,t),t.r=Math.max(0,Math.min(q.color.r*t.r,1)),t.g=Math.max(0,Math.min(q.color.g*t.g,1)),t.b=Math.max(0,Math.min(q.color.b*t.b,1)),q.wireframe?ja(t,q.wireframeLinewidth,q.wireframeLinecap,q.wireframeLinejoin):ia(t)):q.wireframe?ja(q.color,q.wireframeLinewidth,q.wireframeLinecap,q.wireframeLinejoin):ia(q.color);else if(q instanceof THREE.MeshDepthMaterial)ga=j.near,ha=j.far,A.r=A.g=A.b=1-na(a.positionScreen.z,ga,ha),x.r=x.g=x.b=1-na(d.positionScreen.z,ga,ha),y.r=y.g=y.b=1-na(f.positionScreen.z,ga,ha),M.r=(x.r+y.r)*0.5,M.g=(x.g+y.g)*0.5,M.b=(x.b+y.b)*0.5,ea=wa(A,x,y,M),oa(G,H,I,Y,L,B,0,0,1,0,0,1,ea);else if(q instanceof THREE.MeshNormalMaterial)t.r=pa(i.normalWorld.x),t.g=pa(i.normalWorld.y),t.b=pa(i.normalWorld.z),q.wireframe?ja(t,q.wireframeLinewidth,q.wireframeLinecap,q.wireframeLinejoin):ia(t)}function Q(a,d,f,g,h,k,i,q,o){e.info.render.vertices+=4;e.info.render.faces++;b(q.opacity);c(q.blending);if(q.map||q.envMap)C(a,d,g,0,1,3,i,q,o),C(h,f,k,1,2,3,i,q,o);else if(G=a.positionScreen.x,H=a.positionScreen.y,I=d.positionScreen.x,Y=d.positionScreen.y,L=f.positionScreen.x,B=f.positionScreen.y,S=g.positionScreen.x,v=g.positionScreen.y,R=h.positionScreen.x,P=h.positionScreen.y,V=k.positionScreen.x,J=k.positionScreen.y,q instanceof THREE.MeshBasicMaterial)O(G,H,I,Y,L,B,S,v),q.wireframe?ja(q.color,q.wireframeLinewidth,q.wireframeLinecap,q.wireframeLinejoin):ia(q.color);else if(q instanceof THREE.MeshLambertMaterial)ya?!q.wireframe&&q.shading==THREE.SmoothShading&&i.vertexNormalsWorld.length==4?(A.r=x.r=y.r=M.r=$.r,A.g=x.g=y.g=M.g=$.g,A.b=x.b=y.b=M.b=$.b,n(m,i.v1.positionWorld,i.vertexNormalsWorld[0],A),n(m,i.v2.positionWorld,i.vertexNormalsWorld[1],x),n(m,i.v4.positionWorld,i.vertexNormalsWorld[3],y),n(m,i.v3.positionWorld,i.vertexNormalsWorld[2],M),A.r=Math.max(0,Math.min(q.color.r*A.r,1)),A.g=Math.max(0,Math.min(q.color.g*A.g,1)),A.b=Math.max(0,Math.min(q.color.b*A.b,1)),x.r=Math.max(0,Math.min(q.color.r*x.r,1)),x.g=Math.max(0,Math.min(q.color.g*x.g,1)),x.b=Math.max(0,Math.min(q.color.b*x.b,1)),y.r=Math.max(0,Math.min(q.color.r*y.r,1)),y.g=Math.max(0,Math.min(q.color.g*y.g,1)),y.b=Math.max(0,Math.min(q.color.b*y.b,1)),M.r=Math.max(0,Math.min(q.color.r*M.r,1)),M.g=Math.max(0,Math.min(q.color.g*M.g,1)),M.b=Math.max(0,Math.min(q.color.b*M.b,1)),ea=wa(A,x,y,M),K(G,H,I,Y,S,v),oa(G,H,I,Y,S,v,0,0,1,0,0,1,ea),K(R,P,L,B,V,J),oa(R,P,L,B,V,J,1,0,1,1,0,1,ea)):(t.r=$.r,t.g=$.g,t.b=$.b,n(m,i.centroidWorld,i.normalWorld,t),t.r=Math.max(0,Math.min(q.color.r*t.r,1)),t.g=Math.max(0,Math.min(q.color.g*t.g,1)),t.b=Math.max(0,Math.min(q.color.b*t.b,1)),O(G,H,I,Y,L,B,S,v),q.wireframe?ja(t,q.wireframeLinewidth,q.wireframeLinecap,q.wireframeLinejoin):ia(t)):(O(G,H,I,Y,L,B,S,v),q.wireframe?ja(q.color,q.wireframeLinewidth,q.wireframeLinecap,q.wireframeLinejoin):ia(q.color));else if(q instanceof THREE.MeshNormalMaterial)t.r=pa(i.normalWorld.x),t.g=pa(i.normalWorld.y),t.b=pa(i.normalWorld.z),O(G,H,I,Y,L,B,S,v),q.wireframe?ja(t,q.wireframeLinewidth,q.wireframeLinecap,q.wireframeLinejoin):ia(t);else if(q instanceof THREE.MeshDepthMaterial)ga=j.near,ha=j.far,A.r=A.g=A.b=1-na(a.positionScreen.z,ga,ha),x.r=x.g=x.b=1-na(d.positionScreen.z,ga,ha),y.r=y.g=y.b=1-na(g.positionScreen.z,ga,ha),M.r=M.g=M.b=1-na(f.positionScreen.z,ga,ha),ea=wa(A,x,y,M),K(G,H,I,Y,S,v),oa(G,H,I,Y,S,v,0,0,1,0,0,1,ea),K(R,P,L,B,V,J),oa(R,P,L,B,V,J,1,0,1,1,0,1,ea)}function K(a,b,c,d,e,f){k.beginPath();k.moveTo(a,b);k.lineTo(c,d);k.lineTo(e,f);k.lineTo(a,b);k.closePath()}function O(a,b,c,d,e,f,g,h){k.beginPath();k.moveTo(a,b);k.lineTo(c,d);k.lineTo(e,f);k.lineTo(g,h);k.lineTo(a,b);k.closePath()}function ja(a,b,c,e){if(F!=b)k.lineWidth=F=b;if(z!=c)k.lineCap=z=c;if(D!=e)k.lineJoin=D=e;d(a.getContextStyle());k.stroke();X.inflate(b*2)}function ia(a){f(a.getContextStyle());k.fill()}function Aa(a,b,c,d,e,g,h,i,j,m,o,n,l){if(l.image.width!=0){if(l.needsUpdate==!0||la[l.id]==void 0){var p=l.wrapS==THREE.RepeatWrapping,r=l.wrapT==THREE.RepeatWrapping;la[l.id]=k.createPattern(l.image,p&&r?"repeat":p&&!r?"repeat-x":!p&&r?"repeat-y":"no-repeat");l.needsUpdate=!1}f(la[l.id]);var p=l.offset.x/l.repeat.x,r=l.offset.y/l.repeat.y,s=l.image.width*l.repeat.x,u=l.image.height*l.repeat.y,h=(h+p)*s,i=(i+r)*u,j=(j+p)*s,m=(m+r)*u,o=(o+p)*s,n=(n+r)*u;c-=a;d-=b;e-=a;g-=b;j-=h;m-=i;o-=h;n-=i;p=j*n-o*m;if(p==0){if(fa[l.id]==void 0)b=document.createElement("canvas"),b.width=l.image.width,b.height=l.image.height,a=b.getContext("2d"),a.drawImage(l.image,0,0),fa[l.id]=a.getImageData(0,0,l.image.width,l.image.height).data,delete b;b=fa[l.id];h=(Math.floor(h)+Math.floor(i)*l.image.width)*4;t.setRGB(b[h]/255,b[h+1]/255,b[h+2]/255);ia(t)}else p=1/p,l=(n*c-m*e)*p,m=(n*d-m*g)*p,c=(j*e-o*c)*p,d=(j*g-o*d)*p,a=a-l*h-c*i,h=b-m*h-
d*i,k.save(),k.transform(l,m,c,d,a,h),k.fill(),k.restore()}}function oa(a,b,c,d,e,f,g,h,i,j,l,m,o){var n,p;n=o.width-1;p=o.height-1;g*=n;h*=p;i*=n;j*=p;l*=n;m*=p;c-=a;d-=b;e-=a;f-=b;i-=g;j-=h;l-=g;m-=h;p=1/(i*m-l*j);n=(m*c-j*e)*p;j=(m*d-j*f)*p;c=(i*e-l*c)*p;d=(i*f-l*d)*p;a=a-n*g-c*h;b=b-j*g-d*h;k.save();k.transform(n,j,c,d,a,b);k.clip();k.drawImage(o,0,0);k.restore()}function wa(a,b,c,d){var e=~~(a.r*255),f=~~(a.g*255),a=~~(a.b*255),g=~~(b.r*255),h=~~(b.g*255),b=~~(b.b*255),i=~~(c.r*255),j=~~(c.g*255),c=~~(c.b*255),k=~~(d.r*255),l=~~(d.g*255),d=~~(d.b*255);ba[0]=e<0?0:e>255?255:e;ba[1]=f<0?0:f>255?255:f;ba[2]=a<0?0:a>255?255:a;ba[4]=g<0?0:g>255?255:g;ba[5]=h<0?0:h>255?255:h;ba[6]=b<0?0:b>255?255:b;ba[8]=i<0?0:i>255?255:i;ba[9]=j<0?0:j>255?255:j;ba[10]=c<0?0:c>255?255:c;ba[12]=k<0?0:k>255?255:k;ba[13]=l<0?0:l>255?255:l;ba[14]=d<0?0:d>255?255:d;ra.putImageData(za,0,0);va.drawImage(qa,0,0);return sa}function na(a,b,c){a=(a-b)/(c-b);return a*a*(3-2*a)}function pa(a){a=(a+1)*0.5;return a<0?0:a>1?1:a}function ka(a,b){var c=b.x-a.x,d=b.y-a.y,e=c*c+d*d;e!=0&&(e=1/Math.sqrt(e),c*=e,d*=e,b.x+=c,b.y+=d,a.x-=c,a.y-=d)}var xa,Ha,U,ca;this.autoClear?this.clear():k.setTransform(1,0,0,-1,o,p);e.info.render.vertices=0;e.info.render.faces=0;g=l.projectScene(a,j,this.sortElements);h=g.elements;m=g.lights;(ya=m.length>0)&&i(m);xa=0;for(Ha=h.length;xa
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  • 原文地址：https://blog.csdn.net/qiao_yue/article/details/139844904