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skeleton7_doll.html
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skeleton7_doll.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>skeleton 7 Doll Demo</title>
<style>
.range{
display: inline-block;
width: 140px;
}
.range p{
display: inline-block;
width: 100%;
padding: 0;
margin: 0;
text-align: left;
font-family: '微软雅黑';
color: #bbb;
position: relative;
top: -15px;
z-index: -1;
}
</style>
</head>
<body>
<!-- <div id="controller">
<div class="range">
<input type="range" id="speedRange" max="0.1" min="0.01" step="0.01" value="0.05">
<p>Speed</p>
</div>
<div class="range">
<input type="range" id="thighRange" max="90" min="0" step="1" value="45">
<p>Thigh</p>
</div>
<div class="range">
<input type="range" id="calfRange" max="90" min="0" step="1" value="45">
<p>Calf</p>
</div>
<div class="range">
<input type="range" id="thighBase" max="180" min="0" step="1" value="90">
<p>ThighBase</p>
</div>
<div class="range">
<input type="range" id="calfOffset" max="180" min="-180" step="1" value="-90">
<p>CalfOffset</p>
</div>
</div> -->
</body>
<script src="iio-sdk/iioEngine-1.2.2.js"></script>
<script >
var dolls = [];
var nx = 0; //canvas 的left
var ny = 0; //canvas 的top
var nw = 0; //canvas 的offset width
var nh = 0; //canvas 的offset height
var sphereX = 0; //鼠标的x
var sphereY = 0; //鼠标的y
var sphere; //鼠标控制器
var sphereWidth = 50;
var dot = function(x,y,ctx){
ctx.lineWidth = 1;
ctx.beginPath();
ctx.arc(x, y, 4, 0, Math.PI*2, true);
ctx.stroke();
ctx.closePath();
}
//鼠标控制器
var sphereHandler = function(io){
var mCircle = io.addObj(new iio.ioCircle(io.canvas.center.x,io.canvas.center.y+80,50)
.setFillStyle('00BAFF')
.setAlpha(.7),999);
//handle mouse move
io.canvas.addEventListener('mousemove', function(event){
//注意如果你只有小量obj更新，更高效的方式是重绘自身而不是整个canvas重绘
//但是我们把obj交给ioAppManager管理，不需要我们自己clearSelf和draw
//下面这种写法只会变成两种重绘机制
//mCircle.clearSleft(io.context);
//mCircle.draw(io.context);
sphereX = (event.x || event.clientX);
sphereY = (event.y || event.clientY);
mCircle.setPos(io.getEventPosition(event));
});
}
function Point(doll){
this.x = doll.x + Math.random(); //?
this.y = 20 + Math.random(); //?
this.xb = this.x; //?
this.yb = this.y + 2; //?
this.w = 200; //取link中最长的with？
this.stiffness = doll.stiffness;
//该节点上的关节连接,初始化在Link初始化方法中
this.links = [];
this.anim = function(){
/* ==== calculates links angles ==== */
for (var i = 0, link; link = this.links[i++]; link.trigo());
/* ==== inertia + stiffness ==== */
var vx = (this.x - this.xb) * this.stiffness; //惯性速度x
var vy = (this.y - this.yb) * this.stiffness; //惯性速度y
this.xb = this.x; //原速度x
this.yb = this.y; //原速度y
this.x += vx;
this.y += vy;
/* ==== mouse collision ==== */
var dx = this.x - (sphereX - nx);
var dy = this.y - (sphereY - ny);
var d = Math.sqrt(dx * dx + dy * dy);
var w = (sphereWidth + this.w) * .5;
if (d < w) {
d = Math.abs(w - d);
a = Math.atan2(dy, dx);
this.x += d * Math.cos(a);
this.y += d * Math.sin(a);
}
/* ==== screen limits ==== */
if (this.y < 0) {
this.y = 0;
this.yb = -5;
}else if (this.y > canvas.height) {
this.y = canvas.height;
this.yb = canvas.height + 5;
}
if (this.x < 0) {
this.x = 0;
this.xb = -5;
}else if (this.x > canvas.width) {
this.x = canvas.width;
this.xb = canvas.width + 5;
}
}
}
function Link(doll,point0,point1,imgsrc,zIndex,width,height){
this.point0 = point0;
this.point1 = point1;
//point0为父节点
point0.links.push(this);
//link的x,y有trigo方法计算得出,with,height由图片资源
this.width = width*20; //20为比个比例值，可以根据响应式计算这个比例值来调整doll的大小
this.height = height*20;
//init image
var img = new Image();
var _this = this;
img.onload = function(){
//this for img
//_this.width = this.width;
//_this.height = this.height;
this.loaded = true;
}
img.src = imgsrc;
this.img = img
/* ==== calculates links angles ==== */
this.trigo = function () {
/* ==== angle ====*/
this.pointDisX = this.point1.x - this.point0.x;
this.pointDisY = this.point1.y - this.point0.y;
this.angle = Math.atan2(this.pointDisY, this.pointDisX);
/* ==== Constraints ==== */
//if (this.parent) this.constraint();
/* ==== inverse kinematics ==== */
var d = Math.sqrt(this.pointDisX * this.pointDisX + this.pointDisY * this.pointDisY);
var d0 = (this.height - d) * .5;
var dx = this.pointDisX / d * d0; // dx/d0 = pointDisX/d 三角形相似比
var dy = this.pointDisY / d * d0;
var rx = .1 * (Math.random() - .5); //关节活动范围？
var ry = .1 * (Math.random() - .5);
this.point0.x -= (dx + rx);
this.point0.y -= (dy + ry);
this.point1.x += (dx + rx);
this.point1.y += (dy + ry);
/* ==== saves point for rendering ==== */
this.x = this.point0.x;
this.y = this.point0.y;
this.d = d;
}
this.draw = function(){
dot(this.x,this.y,ctx);
var img = this.img;
if(img.loaded){
ctx.save();
ctx.translate(this.x,this.y);
ctx.rotate(this.angle);
// ctx.drawImage(img,-this.width * .15,-this.width * .5, this.d + this.width * .3, this.width);
/**
* 在translate x，y后，我们再在draw方法中调整x，y是调整节点的位置
* 第一二个参数为0，所有节点都是左上角
*
*/
ctx.strokeStyle = 'green';
ctx.strokeRect(-this.width*.15,-this.width/2,this.d + this.width * .3,this.width);
//ctx.strokeStyle = 'black';
//ctx.strokeRect(0,0,this.width,this.height);
ctx.restore();
}
}
}
var Doll = iio.inherit(function(x,y,structure,stiffness){
this.x = x;
this.y = y;
this.size = 300; //先固定
this.stiffness = stiffness;
this.points = [];
this.links = [];
//inheirt method call
iio.ioObj.call(this,x,y);
for(var l in structure){
var link = structure[l],
p0 = link[0],
p1 = link[1];
if(!this.points[p0])
this.points[p0] = new Point(this);
if(!this.points[p1])
this.points[p1] = new Point(this);
this.links.push(new Link(this,this.points[p0],this.points[p1],link[2],link[3],link[4],link[5]) );
}
this.draw = function(ctx){
for(var i = 0,point; point = this.points[i++]; point.anim());
for(var i = 0,link; link = this.links[i++]; link.draw());
}
},iio.ioObj);
var doll;
var ctx,canvas;
var imgPath = 'images/doll/';
var imgSrcs = {
head: imgPath + 'head.png',
body: imgPath + 'body.png',
leg: imgPath + 'leg.png',
calf: imgPath + 'calf.png'
}
var structure = {
// p0, p1, img, zIndex, contraints, aMin, aMax
// body:[ 0, 1, imgSrcs.body, 7, null, null, null],
// head:[ 0, 10, imgSrcs.head, 6, 'body', -1.5, 2],
// leg: [ 1, 2, imgSrcs.leg, 3, 'body', 2.5, 1.2],
// calf:[ 2, 3, imgSrcs.calf, 4, 'leg', 0.3, 2.5]
body:[ 0, 1, imgSrcs.body, 7, 5,9, null, null, null],
head:[ 0, 4, imgSrcs.head, 6, 4.5,4,'body', -1.5, 2],
leg: [ 1, 2, imgSrcs.leg, 3, 3.5,6,'body', 2.5, 1.2],
calf:[ 2, 3, imgSrcs.calf, 4, 5,7, 'leg', 0.3, 2.5]
}
var skeletonApp = function(io){
io.setBGColor('#ddd');
ctx = io.context;
canvas = io.canvas;
sphereHandler(io);
doll = new Doll(200,200,structure,0.998);
io.addObj(doll);
io.setFramerate(60,function(){
io.draw();
});
}
;iio.start(skeletonApp);
</script>
</html>