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function DrawSector(g:Graphics,radius:Number,startAngle:Number,endAngle:Number,color:uint):void
{
g.lineStyle(1);
g.moveTo(0,0);
g.beginFill(color);
for (var i:int=startAngle; i<=endAngle; i++)
{
g.lineTo(radius*Math.cos(-i*Math.PI/180),radius*Math.sin(-i*Math.PI/180));
}
g.endFill();
g.lineTo(0,0);
}
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var pen:Sprite=new Sprite();
addChild(pen);
DrawSector(pen.graphics,50,0,180,0xFF8040); //°´ÄæÊ±ÕëÀ´ÔËËã¡£
ÉÈÐδó¸ÅÍê³É£¬´Ó0¶Èµ½180¶È½øÐÐÆ«ÒÆ¡£»æÖÆÒ»¸ö°ëÔ²¡£¿ÉÒÔÊÔÊÔ¡£
ÏÖÔÚÓÐÁËÕâ¸ö·½Ê½ºó£¬ÎÒÃÇ´´½¨Ò»¸ö¼òµ¥Ò»µã¶¯»­£¬ÉÈÐζ¯»­°É¡£ËûµÄÆ«ÒÆ½Ç¶È½¥½¥Ôö´ó£¬¶¯»­¾Í»á²úÉúÁË
var list:Array=new Array();//¹ÜÀí
for (var i:int=0; i<5; i++)
{
var pen:Sprite=new Sprite();
addChild(pen);
pen.x=i*50+60*i+50;
pen.y=200;
list.push(pen);
}
var n:int=1;
addEventListener(Event.ENTER_FRAME,Run);
function Run(event:Event):void
{
n++;
for (var i:int=0; i<list.length; i++)
{
list[i].graphics.clear();
DrawSector(list[i].graphics,50,0,n,0xFF8040);
if (n==360)
{
n=0;
}
}
}
function DrawSector(g:Graphics,radius:Number,startAngle:Number,endAngle:Number,color:uint):void
{
g.lineStyle(1);
g.moveTo(0,0);
g.beginFill(color);
for (var i:int=startAngle; i<=endAngle; i++)
{
g.lineTo(radius*Math.cos(-i*Math.PI/180),radius*Math.sin(-i*Math.PI/180));
}
g.endFill();
g.lineTo(0,0);
}
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commit;
select * from tname; --4 rows selected
select sysdate from dual; -- È·¶¨Ò»¸öɾ³ý֮ǰµÄʱ¼äµã
flashback table tname to timestamp to_timestamp('2009-12-20 15:00:00','yyyy-mm-dd hh24:mi:ss');
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