可转动的3D立体矩阵特效代码

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Cube</title>
<style>
v\:*{behavior:url(#default#VML);} //声明变量v为VML对象
</style>
<script type="text/javascript">
//vOnlyDrawLine为true时画线框图，false时画实体图
var vOnlyDrawLine = false;
 String.prototype.template=function(){
  var args=arguments;
  return this.replace(/\{(\d+)\}/g, function(m, i){
   return args[i];
  });
 }
//var a="arg1:{0},arg2:{1},arg3:{2}";
//alert(a.template("a","b","c"));  //arg1:a,arg2:b,arg3:c
function ShowInfo(Value){
 memo1.value = memo1.value + Value + "\n\r";
}
function CheckOnClick(CheckBox){
 vOnlyDrawLine=CheckBox.checked;
//alert(vOnlyDrawLine);
}
/*
函数名: gra2htm
功能: 用高为1px的div层模拟画出四边形
*/
function gra2htmold(clr,a,b,c,d){
  var result='';
  var maxx=Math.max(a[0],b[0],c[0],d[0]),minx=Math.min(a[0],b[0],c[0],d[0]);
  var maxy=Math.max(a[1],b[1],c[1],d[1]),miny=Math.min(a[1],b[1],c[1],d[1]);
  x=new Array(a[0],b[0],c[0],d[0],a[0],b[0],c[0],d[0],a[0],b[0]);
  y=new Array(a[1],b[1],c[1],d[1],a[1],b[1],c[1],d[1],a[1],b[1]);
   
  /*/begin
  for(var i=0;i<=3;i++){
    result+='<div style="position:absolute; overflow:hidden; left:'
    +x[i]+'px; top:'+y[i]+'px; width:2px; height:2px; background-color:#FFF"></div>';
  }
  //end*/
  
  if(maxx-minx>=maxy-miny){
    for(var i=3;i<=6;i++)
      if(y[i]==miny){
        var k=l=i;
        break;
      }
    if(y[k]==y[k-1]) k--;
    xa=(x[k-1]-x[k])/(y[k-1]-y[k]);
    if(y[l]==y[l+1]) l++;
    xb=(x[l+1]-x[l])/(y[l+1]-y[l]);
    pl=x[k];pw=x[l]-x[k];
    for(var i=miny+1;i<=maxy;i++){
      if(i>y[k-1]){
        k--;
        xa=(x[k-1]-x[k])/(y[k-1]-y[k]);
      }
      if(i>y[l+1]){
        l++;
        xb=(x[l+1]-x[l])/(y[l+1]-y[l]);
      }
      result+='<div style="overflow:hidden; top:'+i
        +'px; left:'+Math.round(pl+=xa)
        +'px; width:'+Math.round(pw+=xb-xa)
        +'px; height:1px; position:absolute; background-color:'+clr
        +';"></div>';
    }
  } else {
    for(var i=3;i<=6;i++)
      if(x[i]==minx){
        var k=l=i;
        break;
      }
    if(x[k]==x[k+1]) k++;
    ya=(y[k+1]-y[k])/(x[k+1]-x[k]);
    if(x[l]==x[l-1]) l--;
    yb=(y[l-1]-y[l])/(x[l-1]-x[l]);
    pt=y[k];ph=y[l]-y[k];
    for(var i=minx+1;i<=maxx;i++){
      if(i>x[k+1]){
        k++;
        ya=(y[k+1]-y[k])/(x[k+1]-x[k]);
      }
      if(i>x[l-1]){
        l--;
        yb=(y[l-1]-y[l])/(x[l-1]-x[l]);
      }
      result+='<div style="overflow:hidden; left:'+i
        +'px; top:'+Math.round(pt+=ya)
        +'px; height:'+Math.round(ph+=yb-ya)
        +'px; width:1px; position:absolute; background-color:'+clr
        +';"></div>';
    }
  }
  return result;
}
function gra2htm(clr,a,b,c,d){
  var result='';
 if (vOnlyDrawLine)
 {
  result+='<v:polyline strokecolor="black" filled="false" style="position:absolute;" points="' + a[0] + "," + a[1] + " " +
    b[0] + "," + b[1] + " " + c[0] + "," + c[1] + " " + d[0] + "," + d[1] + " " +
  '"></v:polyline>';
 }else{//solid
 result+='<v:polyline strokecolor=' + clr + ' fillcolor="' + clr + '" style="position:absolute;" points="' + a[0] + "," + a[1] + " " +
   b[0] + "," + b[1] + " " + c[0] + "," + c[1] + " " + d[0] + "," + d[1] + " " +
 '"></v:polyline>';
 }
//<v:shadow on="t" type="single" color="#b3b3b3" offset="2pt,3pt"></v:shadow> 
  return result;
}
/*
函数名: remx
功能: 通过更新变换矩阵来记录转动
*/
function remx(type,theta,omx){
  var sinA=Math.sin(theta),cosA=Math.cos(theta);
  var m=new Array();
  switch(type){
    case 'rx':
      m[0]=omx[0];m[1]=omx[1];m[2]=omx[2];
      m[3]=omx[3]*cosA-omx[6]*sinA;m[4]=omx[4]*cosA-omx[7]*sinA;m[5]=omx[5]*cosA-omx[8]*sinA;
      m[6]=omx[3]*sinA+omx[6]*cosA;m[7]=omx[4]*sinA+omx[7]*cosA;m[8]=omx[5]*sinA+omx[8]*cosA;
      break;
    case 'ry':
      m[0]=omx[0]*cosA-omx[6]*sinA;m[1]=omx[1]*cosA-omx[7]*sinA;m[2]=omx[2]*cosA-omx[8]*sinA;
      m[3]=omx[3];m[4]=omx[4];m[5]=omx[5];
      m[6]=omx[0]*sinA+omx[6]*cosA;m[7]=omx[1]*sinA+omx[7]*cosA;m[8]=omx[2]*sinA+omx[8]*cosA;
      break;
  }
  return m;
}
/*
函数名: p2d
功能: 把各个顶点的空间坐标按”近大远小”转换成平面坐标
*/
function p2d(x,y,z){
  var LeftPy=200,TopPy=200;  //定义左和上的平移
  var vT;
  var result=new Array();
  vT = 0.6;
  //ShowInfo("x:{0},y:{1},z:{2}".template(x,y,z));
  result[0]=Math.round(LeftPy+x/(z*0.004+vT));
  result[1]=Math.round(TopPy+y/(z*0.004+vT));
  //result中获得的是该点输出到屏幕上时的x,y坐标位置
  //ShowInfo("result:{0},{1}".template(result[0],result[1]));
  return result;
}
</script>
<script type="text/javascript">
//const
  var pa=new Array([0,0,0],[50,50,-50],[50,50,50],[50,-50,50],[50,-50,-50],[-50,50,-50],[-50,50,50],[-50,-50,50],[-50,-50,-50]);
  var idx=new Array();
  idx[0]=new Array(1,2,3,4);
  idx[1]=new Array(1,4,8,5);
  idx[2]=new Array(1,5,6,2);
  idx[3]=new Array(7,3,2,6);
  idx[4]=new Array(7,8,4,3);
  idx[5]=new Array(7,6,5,8);
  var clr=new Array('#03c','#c00','#fc0','#f60','#fff','#090');
//end
function cube(id){
  if(!document.getElementById(id)) return false;
  this.id=document.getElementById(id);
  this.angle=new Array();
  this.angle2=new Array();
  for(i=1;i<=8;i++) this.angle[i]=new Array(3);
//  alert('success');
}
cube.prototype={
  matrix:new Array(1,0,0,0,1,0,0,0,1),
  paint:function(){
    var result='';
    for(i=1;i<=8;i++){
      this.angle[i][0]=this.matrix[0]*pa[i][0]+this.matrix[1]*pa[i][1]+this.matrix[2]*pa[i][2];
      this.angle[i][1]=this.matrix[3]*pa[i][0]+this.matrix[4]*pa[i][1]+this.matrix[5]*pa[i][2];
      this.angle[i][2]=this.matrix[6]*pa[i][0]+this.matrix[7]*pa[i][1]+this.matrix[8]*pa[i][2];
      this.angle2[i]=p2d(this.angle[i][0],this.angle[i][1],this.angle[i][2]);
    }
    for(i=0;i<6;i++){
 /*
  */
  if ( (vOnlyDrawLine == false)  &&  ((this.angle2[idx[i][2]][0]-this.angle2[idx[i][1]][0])*
        (this.angle2[idx[i][0]][1]-this.angle2[idx[i][1]][1])-
        (this.angle2[idx[i][2]][1]-this.angle2[idx[i][1]][1])*
        (this.angle2[idx[i][0]][0]-this.angle2[idx[i][1]][0])>=0) )
  { //判断，当需要画实体图，且该面不需要显示时跳到下一个面的处理
   continue;
  }
  
          result+=gra2htm(clr[i],this.angle2[idx[i][3]],this.angle2[idx[i][2]],this.angle2[idx[i][1]],
          this.angle2[idx[i][0]]);
    }
//    document.getElementById('aa').value=result;
    this.id.innerHTML=result;
  },
  roll:function(type,theta){
    this.matrix=remx(type,theta,this.matrix);
//    this.paint();
  }
}
</script>
<script type="text/javascript">
var tmr=(new Date()).getTime();
function drag(obj,e){
  e=e?e:window.event;
  var setx=e.clientX,sety=e.clientY;
  
        if(document.addEventListener){ 
            document.addEventListener('mousemove', inFmove, true); 
            document.addEventListener('mouseup', inFup, true); 
        } else if(document.attachEvent){ 
            document.attachEvent('onmousemove', inFmove); 
            document.attachEvent('onmouseup', inFup); 
        } 
         
  function inFmove(e){
    tmr2=(new Date).getTime();
    if(tmr2-tmr<100) return false;
    tmr=tmr2;
    cc.roll('ry',(e.clientX-setx)/50);
    setx=e.clientX;
    cc.roll('rx',(e.clientY-sety)/50);
    sety=e.clientY;
    cc.paint();
    return false;
  }
  function inFup(){ 
            if(document.removeEventListener){ 
                document.removeEventListener('mousemove', inFmove, true); 
                document.removeEventListener('mouseup', inFup, true); 
            } else if(document.detachEvent){ 
                document.detachEvent('onmousemove', inFmove); 
                document.detachEvent('onmouseup', inFup); 
            } 
  } // shawl.qiu script 
}
</script>
</head>
<body>
<div id="t" style="width:640px;height:480px;background-color:#c0c0c0;" oncontextmenu="return false" onmousedown="drag(this,event)"></div>
<br />
<input type="button" onClick="clearInterval(tt)" value="停止" />
<input type="button" onClick="clearInterval(tt);tt=setInterval('cc.roll(\'rx\',0.2);cc.paint();',100)" value="下转" />
<input type="button" onClick="clearInterval(tt);tt=setInterval('cc.roll(\'ry\',0.04);cc.paint();',10)" value="高速右转" />
<input type="checkbox" id="chkOnlydrawline" text="画线框图" onclick="javascript:CheckOnClick(this)"/>画线框图<p/>
 <textarea id="memo1" rows="20" cols="60">

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