可以控制旋转的图像-JS特效-爱易网页

可以控制旋转的图像

日期：2014-05-18　浏览次数：20377 次

欢迎光临爱易网网页脚本特效中心，点击运行按钮演示特效：

以下是程序代码

<title>爱易网网页特效演示，可以控制旋转的图像</title>
</head>

<body>

// The following object is used for the concat
function PathList(inPathList) {
	// All path objects must have these 5 methods
	this.x  = 0;	// Retrieves the current x value
	this.y  = 0;
	this.step = int_step;			// Move to next step
	this.reset = int_reset;			// Resets the current position

// The rest may vary from different path objects

this.pathList = inPathList;
	this.currentPath = 0;

// The following object is used for adding two paths
function PathAdd(p1,p2) {
	// All path objects must have these 5 methods
	this.x  = 0;	// Retrieves the current x value
	this.y  = 0;
	this.step = int_step;			// Move to next step
	this.reset = int_reset;			// Resets the current position

// The rest may vary from different path objects

this._p1 = p1;
	this._p2 = p2;
	
	function int_step() {
		var c1 = this._p1.step();
		var c2 = this._p2.step();

this.x = this._p1.x + this._p2.x;
		this.y = this._p1.y + this._p2.y;

return (c1 || c2);
	}
	
	function int_reset() {
		this._p1.reset();
		this._p2.reset();

this.x = this._p1.x + this._p2.x;
		this.y = this._p1.y + this._p1.y;
	}	
}

function RotatePath(p,xc,yc,v) {
	this.x  = 0;	// Retrieves the current x value
	this.y  = 0;
	this.step = int_step;			// Move to next step
	this.reset = int_reset;			// Resets the current position

// The rest may vary from different path objects

this._p = p;
	this._xc = xc;
	this._yc = yc;
	this._v = v;
	
	function int_step() {
		var c = this._p.step();

var pol = toPol(this._p.x - this._xc, this._p.y - this._yc);
		var rec = toRec(pol.r, pol.v + toRad(this._v));

this.x = rec.x + this._xc;
		this.y = rec.y + this._yc;

return c;
	}
	
	function int_reset() {
		this._p.reset();
		var pol = toPol(this._p.x - this._xc, this._p.y - this._yc);
		var rec = toRec(pol.r, pol.v + toRad(this._v));

this.x = rec.x - this._xc;
		this.y = rec.y - this._yc;
	}

function toPol(x,y) {
		var o = new Object();
		o.r = Math.sqrt(x*x + y*y);
		if (x == 0)
			o.v = Math.PI / 2;
		else
			o.v = Math.atan(y/x);
		if (x < 0)
			o.v = o.v + Math.PI;
		return o;
	}
	
	function toRec(r,v) {
		var o = new Object();
		o.x = r * Math.cos(v);
		o.y = r * Math.sin(v);
		return o;
	}

function toRad(deg) {
		return deg*Math.PI/180;
	}
}

PathAdd.prototype    = new Path;
PathList.prototype   = new Path;
RotatePath.prototype = new Path;	
</script>
<script type="text/javascript">
function CirclePath(x, y, _xr, _yr, fromV, toV, n) {
	// All path objects must have these 5 methods
	this.x  = 0;	// Retrieves the cur</div></div>

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