饼图

最新推荐文章于 2025-01-10 12:06:46 发布

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最新推荐文章于 2025-01-10 12:06:46 发布

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分类专栏： JavaScript 文章标签： function regex div null ie graph

本文链接：https://blog.youkuaiyun.com/li373990257/article/details/6872631

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<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>饼图</title>
</head>
<body>
<center>
<script>
var jg_ok, jg_ie, jg_fast, jg_dom, jg_moz;

function _chkDHTM(x, i)
{
x = document.body || null;
jg_ie = x && typeof x.insertAdjacentHTML != "undefined" && document.createElement;
jg_dom = (x && !jg_ie &&
typeof x.appendChild != "undefined" &&
typeof document.createRange != "undefined" &&
typeof (i = document.createRange()).setStartBefore != "undefined" &&
typeof i.createContextualFragment != "undefined");
jg_fast = jg_ie && document.all && !window.opera;
jg_moz = jg_dom && typeof x.style.MozOpacity != "undefined";
jg_ok = !!(jg_ie || jg_dom);
}

function _pntCnvDom()
{
var x = this.wnd.document.createRange();
x.setStartBefore(this.cnv);
x = x.createContextualFragment(jg_fast? this._htmRpc() : this.htm);
if(this.cnv) this.cnv.appendChild(x);
this.htm = "";
}

function _pntCnvIe()
{
if(this.cnv) this.cnv.insertAdjacentHTML("BeforeEnd", jg_fast? this._htmRpc() : this.htm);
this.htm = "";
}

function _pntDoc()
{
this.wnd.document.write(jg_fast? this._htmRpc() : this.htm);
this.htm = '';
}

function _pntN()
{
;
}

function _mkDiv(x, y, w, h)
{
this.htm += '<div style="position:absolute;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'width:' + w + 'px;'+
'height:' + h + 'px;'+
'clip:rect(0,'+w+'px,'+h+'px,0);'+
'background-color:' + this.color +
(!jg_moz? ';overflow:hidden' : '')+
';"><\/div>';
}

function _mkDivIe(x, y, w, h)
{
this.htm += '%%'+this.color+';'+x+';'+y+';'+w+';'+h+';';
}

function _mkDivPrt(x, y, w, h)
{
this.htm += '<div style="position:absolute;'+
'border-left:' + w + 'px solid ' + this.color + ';'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'width:0px;'+
'height:' + h + 'px;'+
'clip:rect(0,'+w+'px,'+h+'px,0);'+
'background-color:' + this.color +
(!jg_moz? ';overflow:hidden' : '')+
';"><\/div>';
}

var _regex = /%%([^;]+);([^;]+);([^;]+);([^;]+);([^;]+);/g;
function _htmRpc()
{
return this.htm.replace(
_regex,
'<div style="overflow:hidden;position:absolute;background-color:'+
'$1;left:$2;top:$3;width:$4;height:$5"></div>\n');
}

function _htmPrtRpc()
{
return this.htm.replace(
_regex,
'<div style="overflow:hidden;position:absolute;background-color:'+
'$1;left:$2;top:$3;width:$4;height:$5;border-left:$4px solid $1"></div>\n');
}

function _mkLin(x1, y1, x2, y2)
{
if(x1 > x2)
{
var _x2 = x2;
var _y2 = y2;
x2 = x1;
y2 = y1;
x1 = _x2;
y1 = _y2;
}
var dx = x2-x1, dy = Math.abs(y2-y1),
x = x1, y = y1,
yIncr = (y1 > y2)? -1 : 1;

if(dx >= dy)
{
var pr = dy<<1,
pru = pr - (dx<<1),
p = pr-dx,
ox = x;
while(dx > 0)
{--dx;
++x;
if(p > 0)
{
this._mkDiv(ox, y, x-ox, 1);
y += yIncr;
p += pru;
ox = x;
}
else p += pr;
}
this._mkDiv(ox, y, x2-ox+1, 1);
}

else
{
var pr = dx<<1,
pru = pr - (dy<<1),
p = pr-dy,
oy = y;
if(y2 <= y1)
{
while(dy > 0)
{--dy;
if(p > 0)
{
this._mkDiv(x++, y, 1, oy-y+1);
y += yIncr;
p += pru;
oy = y;
}
else
{
y += yIncr;
p += pr;
}
}
this._mkDiv(x2, y2, 1, oy-y2+1);
}
else
{
while(dy > 0)
{--dy;
y += yIncr;
if(p > 0)
{
this._mkDiv(x++, oy, 1, y-oy);
p += pru;
oy = y;
}
else p += pr;
}
this._mkDiv(x2, oy, 1, y2-oy+1);
}
}
}

function _mkLin2D(x1, y1, x2, y2)
{
if(x1 > x2)
{
var _x2 = x2;
var _y2 = y2;
x2 = x1;
y2 = y1;
x1 = _x2;
y1 = _y2;
}
var dx = x2-x1, dy = Math.abs(y2-y1),
x = x1, y = y1,
yIncr = (y1 > y2)? -1 : 1;

var s = this.stroke;
if(dx >= dy)
{
if(dx > 0 && s-3 > 0)
{
var _s = (s*dx*Math.sqrt(1+dy*dy/(dx*dx))-dx-(s>>1)*dy) / dx;
_s = (!(s-4)? Math.ceil(_s) : Math.round(_s)) + 1;
}
else var _s = s;
var ad = Math.ceil(s/2);

var pr = dy<<1,
pru = pr - (dx<<1),
p = pr-dx,
ox = x;
while(dx > 0)
{--dx;
++x;
if(p > 0)
{
this._mkDiv(ox, y, x-ox+ad, _s);
y += yIncr;
p += pru;
ox = x;
}
else p += pr;
}
this._mkDiv(ox, y, x2-ox+ad+1, _s);
}

else
{
if(s-3 > 0)
{
var _s = (s*dy*Math.sqrt(1+dx*dx/(dy*dy))-(s>>1)*dx-dy) / dy;
_s = (!(s-4)? Math.ceil(_s) : Math.round(_s)) + 1;
}
else var _s = s;
var ad = Math.round(s/2);

var pr = dx<<1,
pru = pr - (dy<<1),
p = pr-dy,
oy = y;
if(y2 <= y1)
{
++ad;
while(dy > 0)
{--dy;
if(p > 0)
{
this._mkDiv(x++, y, _s, oy-y+ad);
y += yIncr;
p += pru;
oy = y;
}
else
{
y += yIncr;
p += pr;
}
}
this._mkDiv(x2, y2, _s, oy-y2+ad);
}
else
{
while(dy > 0)
{--dy;
y += yIncr;
if(p > 0)
{
this._mkDiv(x++, oy, _s, y-oy+ad);
p += pru;
oy = y;
}
else p += pr;
}
this._mkDiv(x2, oy, _s, y2-oy+ad+1);
}
}
}

function _mkLinDott(x1, y1, x2, y2)
{
if(x1 > x2)
{
var _x2 = x2;
var _y2 = y2;
x2 = x1;
y2 = y1;
x1 = _x2;
y1 = _y2;
}
var dx = x2-x1, dy = Math.abs(y2-y1),
x = x1, y = y1,
yIncr = (y1 > y2)? -1 : 1,
drw = true;
if(dx >= dy)
{
var pr = dy<<1,
pru = pr - (dx<<1),
p = pr-dx;
while(dx > 0)
{--dx;
if(drw) this._mkDiv(x, y, 1, 1);
drw = !drw;
if(p > 0)
{
y += yIncr;
p += pru;
}
else p += pr;
++x;
}
}
else
{
var pr = dx<<1,
pru = pr - (dy<<1),
p = pr-dy;
while(dy > 0)
{--dy;
if(drw) this._mkDiv(x, y, 1, 1);
drw = !drw;
y += yIncr;
if(p > 0)
{
++x;
p += pru;
}
else p += pr;
}
}
if(drw) this._mkDiv(x, y, 1, 1);
}

function _mkOv(left, top, width, height)
{
var a = (++width)>>1, b = (++height)>>1,
wod = width&1, hod = height&1,
cx = left+a, cy = top+b,
x = 0, y = b,
ox = 0, oy = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1),
w, h;
while(y > 0)
{
if(st < 0)
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
st += bb2*((x<<1)+3) - aa4*(y-1);
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
w = x-ox;
h = oy-y;
if((w&2) && (h&2))
{
this._mkOvQds(cx, cy, x-2, y+2, 1, 1, wod, hod);
this._mkOvQds(cx, cy, x-1, y+1, 1, 1, wod, hod);
}
else this._mkOvQds(cx, cy, x-1, oy, w, h, wod, hod);
ox = x;
oy = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
}
w = a-ox+1;
h = (oy<<1)+hod;
y = cy-oy;
this._mkDiv(cx-a, y, w, h);
this._mkDiv(cx+ox+wod-1, y, w, h);
}

function _mkOv2D(left, top, width, height)
{
var s = this.stroke;
width += s+1;
height += s+1;
var a = width>>1, b = height>>1,
wod = width&1, hod = height&1,
cx = left+a, cy = top+b,
x = 0, y = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1);

if(s-4 < 0 && (!(s-2) || width-51 > 0 && height-51 > 0))
{
var ox = 0, oy = b,
w, h,
pxw;
while(y > 0)
{
if(st < 0)
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
st += bb2*((x<<1)+3) - aa4*(y-1);
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
w = x-ox;
h = oy-y;

if(w-1)
{
pxw = w+1+(s&1);
h = s;
}
else if(h-1)
{
pxw = s;
h += 1+(s&1);
}
else pxw = h = s;
this._mkOvQds(cx, cy, x-1, oy, pxw, h, wod, hod);
ox = x;
oy = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
}
this._mkDiv(cx-a, cy-oy, s, (oy<<1)+hod);
this._mkDiv(cx+a+wod-s, cy-oy, s, (oy<<1)+hod);
}

else
{
var _a = (width-(s<<1))>>1,
_b = (height-(s<<1))>>1,
_x = 0, _y = _b,
_aa2 = (_a*_a)<<1, _aa4 = _aa2<<1, _bb2 = (_b*_b)<<1, _bb4 = _bb2<<1,
_st = (_aa2>>1)*(1-(_b<<1)) + _bb2,
_tt = (_bb2>>1) - _aa2*((_b<<1)-1),

pxl = new Array(),
pxt = new Array(),
_pxb = new Array();
pxl[0] = 0;
pxt[0] = b;
_pxb[0] = _b-1;
while(y > 0)
{
if(st < 0)
{
pxl[pxl.length] = x;
pxt[pxt.length] = y;
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
pxl[pxl.length] = x;
st += bb2*((x<<1)+3) - aa4*(y-1);
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
pxt[pxt.length] = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}

if(_y > 0)
{
if(_st < 0)
{
_st += _bb2*((_x<<1)+3);
_tt += _bb4*(++_x);
_pxb[_pxb.length] = _y-1;
}
else if(_tt < 0)
{
_st += _bb2*((_x<<1)+3) - _aa4*(_y-1);
_tt += _bb4*(++_x) - _aa2*(((_y--)<<1)-3);
_pxb[_pxb.length] = _y-1;
}
else
{
_tt -= _aa2*((_y<<1)-3);
_st -= _aa4*(--_y);
_pxb[_pxb.length-1]--;
}
}
}

var ox = -wod, oy = b,
_oy = _pxb[0],
l = pxl.length,
w, h;
for(var i = 0; i < l; i++)
{
if(typeof _pxb[i] != "undefined")
{
if(_pxb[i] < _oy || pxt[i] < oy)
{
x = pxl[i];
this._mkOvQds(cx, cy, x, oy, x-ox, oy-_oy, wod, hod);
ox = x;
oy = pxt[i];
_oy = _pxb[i];
}
}
else
{
x = pxl[i];
this._mkDiv(cx-x, cy-oy, 1, (oy<<1)+hod);
this._mkDiv(cx+ox+wod, cy-oy, 1, (oy<<1)+hod);
ox = x;
oy = pxt[i];
}
}
this._mkDiv(cx-a, cy-oy, 1, (oy<<1)+hod);
this._mkDiv(cx+ox+wod, cy-oy, 1, (oy<<1)+hod);
}
}

function _mkOvDott(left, top, width, height)
{
var a = (++width)>>1, b = (++height)>>1,
wod = width&1, hod = height&1, hodu = hod^1,
cx = left+a, cy = top+b,
x = 0, y = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1),
drw = true;
while(y > 0)
{
if(st < 0)
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
st += bb2*((x<<1)+3) - aa4*(y-1);
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
if(drw && y >= hodu) this._mkOvQds(cx, cy, x, y, 1, 1, wod, hod);
drw = !drw;
}
}

function _mkRect(x, y, w, h)
{
var s = this.stroke;
this._mkDiv(x, y, w, s);
this._mkDiv(x+w, y, s, h);
this._mkDiv(x, y+h, w+s, s);
this._mkDiv(x, y+s, s, h-s);
}

function _mkRectDott(x, y, w, h)
{
this.drawLine(x, y, x+w, y);
this.drawLine(x+w, y, x+w, y+h);
this.drawLine(x, y+h, x+w, y+h);
this.drawLine(x, y, x, y+h);
}

function jsgFont()
{
this.PLAIN = 'font-weight:normal;';
this.BOLD = 'font-weight:bold;';
this.ITALIC = 'font-style:italic;';
this.ITALIC_BOLD = this.ITALIC + this.BOLD;
this.BOLD_ITALIC = this.ITALIC_BOLD;
}
var Font = new jsgFont();

function jsgStroke()
{
this.DOTTED = -1;
}
var Stroke = new jsgStroke();

function jsGraphics(cnv, wnd)
{
this.setColor = function(x)
{
this.color = x.toLowerCase();
};

this.setStroke = function(x)
{
this.stroke = x;
if(!(x+1))
{
this.drawLine = _mkLinDott;
this._mkOv = _mkOvDott;
this.drawRect = _mkRectDott;
}
else if(x-1 > 0)
{
this.drawLine = _mkLin2D;
this._mkOv = _mkOv2D;
this.drawRect = _mkRect;
}
else
{
this.drawLine = _mkLin;
this._mkOv = _mkOv;
this.drawRect = _mkRect;
}
};

this.setPrintable = function(arg)
{
this.printable = arg;
if(jg_fast)
{
this._mkDiv = _mkDivIe;
this._htmRpc = arg? _htmPrtRpc : _htmRpc;
}
else this._mkDiv = arg? _mkDivPrt : _mkDiv;
};

this.setFont = function(fam, sz, sty)
{
this.ftFam = fam;
this.ftSz = sz;
this.ftSty = sty || Font.PLAIN;
};

this.drawPolyline = this.drawPolyLine = function(x, y)
{
for (var i=x.length - 1; i;)
{--i;
this.drawLine(x[i], y[i], x[i+1], y[i+1]);
}
};

this.fillRect = function(x, y, w, h)
{
this._mkDiv(x, y, w, h);
};

this.drawPolygon = function(x, y)
{
this.drawPolyline(x, y);
this.drawLine(x[x.length-1], y[x.length-1], x[0], y[0]);
};

this.drawEllipse = this.drawOval = function(x, y, w, h)
{
this._mkOv(x, y, w, h);
};

this.fillEllipse = this.fillOval = function(left, top, w, h)
{
var a = w>>1, b = h>>1,
wod = w&1, hod = h&1,
cx = left+a, cy = top+b,
x = 0, y = b, oy = b,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1),
xl, dw, dh;
if(w) while(y > 0)
{
if(st < 0)
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0)
{
st += bb2*((x<<1)+3) - aa4*(y-1);
xl = cx-x;
dw = (x<<1)+wod;
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
dh = oy-y;
this._mkDiv(xl, cy-oy, dw, dh);
this._mkDiv(xl, cy+y+hod, dw, dh);
oy = y;
}
else
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
}
}
this._mkDiv(cx-a, cy-oy, w, (oy<<1)+hod);
};

this.fillArc = function(iL, iT, iW, iH, fAngA, fAngZ)
{
var a = iW>>1, b = iH>>1,
iOdds = (iW&1) | ((iH&1) << 16),
cx = iL+a, cy = iT+b,
x = 0, y = b, ox = x, oy = y,
aa2 = (a*a)<<1, aa4 = aa2<<1, bb2 = (b*b)<<1, bb4 = bb2<<1,
st = (aa2>>1)*(1-(b<<1)) + bb2,
tt = (bb2>>1) - aa2*((b<<1)-1),
// Vars for radial boundary lines
xEndA, yEndA, xEndZ, yEndZ,
iSects = (1 << (Math.floor((fAngA %= 360.0)/180.0) << 3))
| (2 << (Math.floor((fAngZ %= 360.0)/180.0) << 3))
| ((fAngA >= fAngZ) << 16),
aBndA = new Array(b+1), aBndZ = new Array(b+1);

// Set up radial boundary lines
fAngA *= Math.PI/180.0;
fAngZ *= Math.PI/180.0;
xEndA = cx+Math.round(a*Math.cos(fAngA));
yEndA = cy+Math.round(-b*Math.sin(fAngA));
_mkLinVirt(aBndA, cx, cy, xEndA, yEndA);
xEndZ = cx+Math.round(a*Math.cos(fAngZ));
yEndZ = cy+Math.round(-b*Math.sin(fAngZ));
_mkLinVirt(aBndZ, cx, cy, xEndZ, yEndZ);

while(y > 0)
{
if(st < 0) // Advance x
{
st += bb2*((x<<1)+3);
tt += bb4*(++x);
}
else if(tt < 0) // Advance x and y
{
st += bb2*((x<<1)+3) - aa4*(y-1);
ox = x;
tt += bb4*(++x) - aa2*(((y--)<<1)-3);
this._mkArcDiv(ox, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
oy = y;
}
else // Advance y
{
tt -= aa2*((y<<1)-3);
st -= aa4*(--y);
if(y && (aBndA[y] != aBndA[y-1] || aBndZ[y] != aBndZ[y-1]))
{
this._mkArcDiv(x, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
ox = x;
oy = y;
}
}
}
this._mkArcDiv(x, 0, oy, cx, cy, iOdds, aBndA, aBndZ, iSects);
if(iOdds >> 16) // Odd height
{
if(iSects >> 16) // Start-angle > end-angle
{
var xl = (yEndA <= cy || yEndZ > cy)? (cx - x) : cx;
this._mkDiv(xl, cy, x + cx - xl + (iOdds & 0xffff), 1);
}
else if((iSects & 0x01) && yEndZ > cy)
this._mkDiv(cx - x, cy, x, 1);
}
};

this.fillPolygon = function(array_x, array_y)
{
var i;
var y;
var miny, maxy;
var x1, y1;
var x2, y2;
var ind1, ind2;
var ints;

var n = array_x.length;
if(!n) return;

miny = array_y[0];
maxy = array_y[0];
for(i = 1; i < n; i++)
{
if(array_y[i] < miny)
miny = array_y[i];

if(array_y[i] > maxy)
maxy = array_y[i];
}
for(y = miny; y <= maxy; y++)
{
var polyInts = new Array();
ints = 0;
for(i = 0; i < n; i++)
{
if(!i)
{
ind1 = n-1;
ind2 = 0;
}
else
{
ind1 = i-1;
ind2 = i;
}
y1 = array_y[ind1];
y2 = array_y[ind2];
if(y1 < y2)
{
x1 = array_x[ind1];
x2 = array_x[ind2];
}
else if(y1 > y2)
{
y2 = array_y[ind1];
y1 = array_y[ind2];
x2 = array_x[ind1];
x1 = array_x[ind2];
}
else continue;

// Modified 11. 2. 2004 Walter Zorn
if((y >= y1) && (y < y2))
polyInts[ints++] = Math.round((y-y1) * (x2-x1) / (y2-y1) + x1);

else if((y == maxy) && (y > y1) && (y <= y2))
polyInts[ints++] = Math.round((y-y1) * (x2-x1) / (y2-y1) + x1);
}
polyInts.sort(_CompInt);
for(i = 0; i < ints; i+=2)
this._mkDiv(polyInts[i], y, polyInts[i+1]-polyInts[i]+1, 1);
}
};

this.drawString = function(txt, x, y, id)
{
this.htm += '<div style="position:absolute;white-space:nowrap;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'font-family:' + this.ftFam + ';'+
'font-size:' + this.ftSz + ';'+
'color:' + this.color + ';' + this.ftSty + '"' +
(id? (' id="' + id + '"') : null) + '>'+
txt +
'<\/div>';
};

this.drawStringRect = function(txt, x, y, w, halign, id)
{
this.htm += '<div style="position:absolute;overflow:hidden;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
'width:' + w + 'px;'+
'text-align:'+halign+';'+
'font-family:' + this.ftFam + ';'+
'font-size:' + this.ftSz + ';'+
'color:' + this.color + ';' + this.ftSty + '"' +
(id? (' id="' + id + '"') : '') + '>'+
txt +
'<\/div>';
};

this.drawImage = function(imgSrc, x, y, w, h, a)
{
this.htm += '<div style="position:absolute;'+
'left:' + x + 'px;'+
'top:' + y + 'px;'+
// w (width) and h (height) arguments are now optional.
// Added by Mahmut Keygubatli, 14.1.2008
(w? ('width:' + w + 'px;') : '') +
(h? ('height:' + h + 'px;'):'')+'">'+
'<img src="' + imgSrc +'"'+ (w ? (' width="' + w + '"'):'')+ (h ? (' height="' + h + '"'):'') + (a? (' '+a) : '') + '>'+
'<\/div>';
};

this.clear = function()
{
this.htm = "";
if(this.cnv) this.cnv.innerHTML = "";
};

this._mkOvQds = function(cx, cy, x, y, w, h, wod, hod)
{
var xl = cx - x, xr = cx + x + wod - w, yt = cy - y, yb = cy + y + hod - h;
if(xr > xl+w)
{
this._mkDiv(xr, yt, w, h);
this._mkDiv(xr, yb, w, h);
}
else
w = xr - xl + w;
this._mkDiv(xl, yt, w, h);
this._mkDiv(xl, yb, w, h);
};

this._mkArcDiv = function(x, y, oy, cx, cy, iOdds, aBndA, aBndZ, iSects)
{
var xrDef = cx + x + (iOdds & 0xffff), y2, h = oy - y, xl, xr, w;

if(!h) h = 1;
x = cx - x;

if(iSects & 0xff0000) // Start-angle > end-angle
{
y2 = cy - y - h;
if(iSects & 0x00ff)
{
if(iSects & 0x02)
{
xl = Math.max(x, aBndZ[y]);
w = xrDef - xl;
if(w > 0) this._mkDiv(xl, y2, w, h);
}
if(iSects & 0x01)
{
xr = Math.min(xrDef, aBndA[y]);
w = xr - x;
if(w > 0) this._mkDiv(x, y2, w, h);
}
}
else
this._mkDiv(x, y2, xrDef - x, h);
y2 = cy + y + (iOdds >> 16);
if(iSects & 0xff00)
{
if(iSects & 0x0100)
{
xl = Math.max(x, aBndA[y]);
w = xrDef - xl;
if(w > 0) this._mkDiv(xl, y2, w, h);
}
if(iSects & 0x0200)
{
xr = Math.min(xrDef, aBndZ[y]);
w = xr - x;
if(w > 0) this._mkDiv(x, y2, w, h);
}
}
else
this._mkDiv(x, y2, xrDef - x, h);
}
else
{
if(iSects & 0x00ff)
{
if(iSects & 0x02)
xl = Math.max(x, aBndZ[y]);
else
xl = x;
if(iSects & 0x01)
xr = Math.min(xrDef, aBndA[y]);
else
xr = xrDef;
y2 = cy - y - h;
w = xr - xl;
if(w > 0) this._mkDiv(xl, y2, w, h);
}
if(iSects & 0xff00)
{
if(iSects & 0x0100)
xl = Math.max(x, aBndA[y]);
else
xl = x;
if(iSects & 0x0200)
xr = Math.min(xrDef, aBndZ[y]);
else
xr = xrDef;
y2 = cy + y + (iOdds >> 16);
w = xr - xl;
if(w > 0) this._mkDiv(xl, y2, w, h);
}
}
};

this.setStroke(1);
this.setFont("verdana,geneva,helvetica,sans-serif", "12px", Font.PLAIN);
this.color = "#000000";
this.htm = "";
this.wnd = wnd || window;

if(!jg_ok) _chkDHTM();
if(jg_ok)
{
if(cnv)
{
if(typeof(cnv) == "string")
this.cont = document.all? (this.wnd.document.all[cnv] || null)
: document.getElementById? (this.wnd.document.getElementById(cnv) || null)
: null;
else if(cnv == window.document)
this.cont = document.getElementsByTagName("body")[0];
else this.cont = cnv;
this.cnv = this.wnd.document.createElement("div");
this.cnv.style.fontSize=0;
this.cont.appendChild(this.cnv);
this.paint = jg_dom? _pntCnvDom : _pntCnvIe;
}
else
this.paint = _pntDoc;
}
else
this.paint = _pntN;

this.setPrintable(false);
}

function _mkLinVirt(aLin, x1, y1, x2, y2)
{
var dx = Math.abs(x2-x1), dy = Math.abs(y2-y1),
x = x1, y = y1,
xIncr = (x1 > x2)? -1 : 1,
yIncr = (y1 > y2)? -1 : 1,
p,
i = 0;
if(dx >= dy)
{
var pr = dy<<1,
pru = pr - (dx<<1);
p = pr-dx;
while(dx > 0)
{--dx;
if(p > 0) // Increment y
{
aLin[i++] = x;
y += yIncr;
p += pru;
}
else p += pr;
x += xIncr;
}
}
else
{
var pr = dx<<1,
pru = pr - (dy<<1);
p = pr-dy;
while(dy > 0)
{--dy;
y += yIncr;
aLin[i++] = x;
if(p > 0) // Increment x
{
x += xIncr;
p += pru;
}
else p += pr;
}
}
for(var len = aLin.length, i = len-i; i;)
aLin[len-(i--)] = x;
};

function _CompInt(x, y)
{
return(x - y);
}

</script>
<script>
hD="0123456789ABCDEF";
function d2h(d)
{
var h = hD.substr(d&15,1);
while(d>15) {d>>=4;h=hD.substr(d&15,1)+h;}
return h;
}

function h2d(h)
{
return parseInt(h,16);
}

function pie()
{
this.ct = 0;

this.data = new Array();
this.x_name = new Array();
this.div_id = new Array();
this.max = 0;

this.c_array = new Array();
this.c_array[0] = new Array(255, 192, 95);
this.c_array[1] = new Array(80, 127, 175);
this.c_array[2] = new Array(159, 87, 112);
this.c_array[3] = new Array(111, 120, 96);
this.c_array[4] = new Array(224, 119, 96);
this.c_array[5] = new Array(80, 159, 144);
this.c_array[6] = new Array(207, 88, 95);
this.c_array[7] = new Array(64, 135, 96);
this.c_array[8] = new Array(239, 160, 95);
this.c_array[9] = new Array(144, 151, 80);
this.c_array[10] = new Array(255, 136, 80);

this.getColor = function()
{
if(this.ct >= (this.c_array.length-1))
this.ct = 0;
else
this.ct++;

return "#" + d2h(this.c_array[this.ct][0]) + d2h(this.c_array[this.ct][1]) + d2h(this.c_array[this.ct][2]);
}

this.add = function(x_name, value, divId)
{
this.x_name.push(x_name);
this.data.push(parseInt(value,10));
divId?this.div_id.push(divId):null;
this.max += parseInt(value,10);
}

this.render = function(canvas, title, size)
{
var jg,cnv,r,sW,cH,sx,xy,st_angle,hyp,lblFnt,graphFnt;
jg = new jsGraphics(canvas);
cnv = document.getElementById(canvas);
cW = (cnv.style.width).substring(0,(cnv.style.width).lastIndexOf('px')); //width of chart canvas
cH = (cnv.style.height).substring(0,(cnv.style.height).lastIndexOf('px')); //height of chart canvas
size?size=size:size=cW*.5; //if no size is provided, default to 50% of the canvas width.
r = size/2;
sx = cW/2 - r;
sy = cH/2 - r;
st_angle = 0; //starting position for piechart graph
hyp = r*1.25; //the length of the ray used to position the text (125% of the radius)
lblFnt = 10;
graphFnt = 14;

// pie 投影
/*jg.setColor("#000000");
jg.fillEllipse(sx+3,sy+3,2*r,2*r);*/

for(i = 0; i<this.data.length; i++)
{
var angle = Math.round(this.data[i]/this.max*360);
var pc = Math.round(this.data[i]/this.max*100);
jg.setColor(this.getColor());
jg.fillArc(sx,sy,2*r,2*r,st_angle,st_angle+angle);
var ang_rads = (st_angle+(angle/2)) * (Math.PI/180);
var my = Math.sin(ang_rads) * hyp;
var mx = Math.cos(ang_rads) * hyp;
st_angle += angle;
mxa = (mx < 0 ? 50 : 0);
jg.setColor("black");//字的颜色
jg.setFont("verdana, arial, sans-serif",lblFnt+"px",Font.PLAIN);
jg.drawString(this.x_name[i]+"("+pc+"%"+")",cW/2+mx-mxa,cH/2-my, this.div_id[i]);
}
jg.setFont("verdana, arial, sans-serif", graphFnt+"px",Font.BOLD);
jg.drawStringRect(title, 0, 0, cW, 'center');
jg.setColor("#ffffff");//全轮廓的颜色
jg.drawEllipse(sx, sy, 2*r, 2*r);
jg.paint();
}
}

</script>

<div id="myCanvas" style="overflow: auto; position: relative; height: 400px; width: 400px;"></div>

<script>
var p = new pie();
p.add("Jan",100);
p.add("Feb",200);
p.add("Mar",150);
p.add("Apr",120);
p.add("May",315);
p.add("Jun",415);
p.add("Jul",315);
p.add("Jul111",315);
p.add("Jul22",115);
p.add("Jul33",115);
p.add("Jul44",215);

p.render("myCanvas", "饼图")
</script>
</div>
</div>
</center>
</body>
</html>