コンソールに「
db.drawCircle([50,50],20,"black");
db.drawLine([5,5],[36,44],"red")」と入力します。 ;
効果を確認できます
関数 DrawingBoard(width,height,size)
{
size=size||3
var container=document.createElement("div");
this.container=コンテナ;
container.runtimeStyle.width=(width)*size "px";
container.runtimeStyle.height=(高さ)*サイズ "px";
container.runtimeStyle.margin="0px";
//container.style.border="solid 1px blue";
var count=0;
for(var y=0;y {
for(var x=0;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="";
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.containえー);
}
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=コンテナ;
container.runtimeStyle.width=(width);
container.runtimeStyle.height=(高さ);
container.runtimeStyle.margin="0px";
container.runtimeStyle.backgroundColor="black";
container.runtimeStyle.fontFamily="ターミナル";
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="ターミナル";
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 「不正なコマンド」;
}
r を返します。
}
this.run=function(str)
{
this.input.parentNode.childNodes[0].innerHTML =str '
'
this.input.parentNode.childNodes[0].innerHTML =(command(str) "
")
}
this.input.command=function()
{
this.parentNode.childNodes[0].innerHTML =this.value '
'
this.parentNode.childNodes[0].innerHTML =(command(this.value) "
")
}
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);");