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鼠标随移动的方向而改变
<html xmlns:v="urn:schemas-microsoft-com:vml">
<STYLE>
body{margin:0px;cursor:url(http://www.jscode.cn/jscode/images/Select.cur)}
v\:* { Behavior: url(#default#VML) }
</STYLE>
<script>
var trace=""
var vP
var r=0
var vS
var p=new Object()
var lineColor=[[255,0,0],[255,0,255]]
p.x=0;p.y=0
function init(){
document.body.onmousedown=function(){
if (event.button==1 || event.button==4){
if (event.button==1) vP=document.createElement("v:PolyLine"); else vP=document.createElement("v:line");
}
vS=document.createElement("v:stroke")
vP.filled="false"
vP.appendChild(vS)
document.body.appendChild(vP)
trace="";
if (event.button==4) vP.from.value=event.clientX + "," + event.clientY;
}
document.body.onmousemove=function(){
if (event.button==1){
pos=event.clientX + "," + event.clientY + " ";
trace+=pos
vS.color="rgb(255,0,0)"
vP.points.value=trace
}
if (event.button==4) {
vP.to.value=event.clientX + "," + event.clientY;
}
rImg.style.left=event.clientX-20;
rImg.style.top=event.clientY-20;
var cX = p.x-event.clientX;
var cY = p.y-event.clientY;
if (cX || cY) {
status ="cX:"+cX+" -cY:"+cY
rotationImg(180-parseInt(Math.atan2(cY,cX)*180/Math.PI,10));
}
p.x=event.clientX;
p.y=event.clientY;
}
document.body.onmouseup=function(){
vS.EndArrow="Block"
}
document.onselectstart=function(){return false}
}
function rotationImg(flag){
window.status=r + " to " + flag;
var step=3;
while(r-flag>180) flag+=360
while(flag-r>180) flag-=360
r += (flag-r)/step
rImg.style.rotation=90-r;
}
</script>
<body onload="init()">
<v:image id="rImg" src="http://www.jscode.cn/jscode/images/mouse.gif" style="position:absolute;top:0;left:0;width:37;height:37;0" >
<v:Stroke dashstyle="Solid"/>
</v:image>
</body>
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