在控制台中输入
db.drawCircle([50,50],20,"black");
db.drawLine([5,5],[36,44],"red");
可以看到效果
复制代码 代码如下:
<body style="margin:0px;">
</body>
<script>
function DrawingBoard(width,height,size)
{
size=size||3
var container=document.createElement("div");
this.container=container;
container.runtimeStyle.width=(width)*size+"px";
container.runtimeStyle.height=(height)*size+"px";
container.runtimeStyle.margin="0px";
//container.style.border="solid 1px blue";
var count=0;
for(var y=0;y<height;y++)
{
for(var x=0;x<width;x++)
{
var curr=document.createElement("div");
curr.runtimeStyle.height=size+"px";
curr.runtimeStyle.width=size+"px";
curr.runtimeStyle.display="inline";
curr.runtimeStyle.overflow="hidden";
curr.style.backgroundColor="green";
curr.src="/UploadFiles/2021-04-02/"> container.appendChild(curr);
}
}
//alert(curr.currentStyle.display);
//document.body.appendChild(container);
this.drawLine=function(start,end,color)
{
var dx=start[0]-end[0];
var dy=start[1]-end[1];
var x,y;
if( Math.abs(dx) > Math.abs(dy) )
{
for(var x=start[0];x!=end[0]+(end[0]-start[0])/Math.abs(end[0]-start[0]);x+=(end[0]-start[0])/Math.abs(end[0]-start[0]) )
{
y=Math.round((x-start[0])/dx*dy+start[1]);
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
}
}
else
{
for(var y=start[1];y!=end[1]+(end[1]-start[1])/Math.abs(end[1]-start[1]);y+=(end[1]-start[1])/Math.abs(end[1]-start[1]) )
{
x=Math.round((y-start[1])/dy*dx+start[0]);
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
}
}
}
this.drawCircle=function(m,R,color)
{
for(var r=0;r<=Math.floor(Math.sqrt(R*R-r*r));r++)
{
x=m[0]+r;y=m[1]+Math.floor(Math.sqrt(R*R-r*r));
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
x=m[0]-r;y=m[1]+Math.floor(Math.sqrt(R*R-r*r));
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
x=m[0]+r;y=m[1]-Math.floor(Math.sqrt(R*R-r*r));
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
x=m[0]-r;y=m[1]-Math.floor(Math.sqrt(R*R-r*r));
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
y=m[1]+r;x=m[0]+Math.floor(Math.sqrt(R*R-r*r));
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
y=m[1]-r;x=m[0]+Math.floor(Math.sqrt(R*R-r*r));
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
y=m[1]+r;x=m[0]-Math.floor(Math.sqrt(R*R-r*r));
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
y=m[1]-r;x=m[0]-Math.floor(Math.sqrt(R*R-r*r));
this.container.childNodes[this.trans([x,y])].style.backgroundColor=color;
}
}
this.appendto=function(parent)
{
parent.appendChild(this.container);
}
this.drawPoint=function(p,color)
{
this.container.childNodes[this.trans(p)].style.backgroundColor=color;
}
this.trans=function(p)
{
return p[0]+p[1]*width;
}
container=null;
}
function Console(width,height,command)
{
var container=document.createElement("div");
this.container=container;
container.runtimeStyle.width=(width);
container.runtimeStyle.height=(height);
container.runtimeStyle.margin="0px";
container.runtimeStyle.backgroundColor="black";
container.runtimeStyle.fontFamily="Terminal";
container.runtimeStyle.color="white";
container.runtimeStyle.fontSize="16px";
this.output=document.createElement("div");
container.appendChild(this.output);
container.innerHTML+="js>"
this.input=document.createElement("input");
container.appendChild(this.input);
this.input.runtimeStyle.backgroundColor="black";
this.input.runtimeStyle.borderWidth="0px";
this.input.runtimeStyle.color="white";
this.input.runtimeStyle.fontFamily="Terminal";
this.input.runtimeStyle.width="90%"
this.input.runtimeStyle.fontSize="16px"
this.input.runtimeStyle.position="relative";
this.input.runtimeStyle.top="2px";
command=command||function(str)
{
var e;
try{
var r=eval(str);
} catch(e) {
return "Bad command";
}
return r;
}
this.run=function(str)
{
this.input.parentNode.childNodes[0].innerHTML+=str+'<br/>'
this.input.parentNode.childNodes[0].innerHTML+=(command(str)+"<br/>")
}
this.input.command=function()
{
this.parentNode.childNodes[0].innerHTML+=this.value+'<br/>'
this.parentNode.childNodes[0].innerHTML+=(command(this.value)+"<br/>")
}
this.input.onkeyup=new Function("e","e=e||event;if(e.keyCode!=13)return;this.command();this.value='';");
this.appendto=function(parent)
{
parent.appendChild(this.container);
}
container=null;
}
var c=new Console("100%","50%");
c.appendto(document.body);
c.run("window.db=new DrawingBoard(100,100);document.body.appendChild(db.container);");
</script>
免责声明:本站资源来自互联网收集,仅供用于学习和交流,请遵循相关法律法规,本站一切资源不代表本站立场,如有侵权、后门、不妥请联系本站删除!
更新日志
- 【雨果唱片】中国管弦乐《鹿回头》WAV
- APM亚流新世代《一起冒险》[FLAC/分轨][106.77MB]
- 崔健《飞狗》律冻文化[WAV+CUE][1.1G]
- 罗志祥《舞状元 (Explicit)》[320K/MP3][66.77MB]
- 尤雅.1997-幽雅精粹2CD【南方】【WAV+CUE】
- 张惠妹.2007-STAR(引进版)【EMI百代】【WAV+CUE】
- 群星.2008-LOVE情歌集VOL.8【正东】【WAV+CUE】
- 罗志祥《舞状元 (Explicit)》[FLAC/分轨][360.76MB]
- Tank《我不伟大,至少我能改变我。》[320K/MP3][160.41MB]
- Tank《我不伟大,至少我能改变我。》[FLAC/分轨][236.89MB]
- CD圣经推荐-夏韶声《谙2》SACD-ISO
- 钟镇涛-《百分百钟镇涛》首批限量版SACD-ISO
- 群星《继续微笑致敬许冠杰》[低速原抓WAV+CUE]
- 潘秀琼.2003-国语难忘金曲珍藏集【皇星全音】【WAV+CUE】
- 林东松.1997-2039玫瑰事件【宝丽金】【WAV+CUE】