ｖ２ｖ４ｐ０ - 経済統計練習帳

var z,v2;
var k;
 
function sample(){
 
    k=0;
 
    pi=Math.PI;
 
    n=0;
 
    z=0;
 
    v2=0;
 
  var timer;
var delay = 100;
 
var loop = function () {
 
 
 n=n+10;
 
v1=200*Math.cos(pi*n/180);
 
k=k+v1;
 
 v2=0;
 if(k>100)v2=0.1*v1;
 
 k=k-v2;
 
 
 
 
    paint();
 
    clearTimeout(timer);
    timer = setTimeout(loop, delay);
}
 
loop();
 
 
 
}
 
function paint(){
 
var sub=new svgpaint();
 
str="<svg width=\"500\" height=\"500\">";
 
for(s=1;s<501;s++){    
y1=200*Math.cos(pi*(n+s)/180);
y2=200*Math.cos(pi*(n+s+1)/180);
str=str+sub.line(s,250-y1,s+1,250-y2,2,"black");
} 
str=str+sub.line(0,250-v2,500,250-v2,2,"red");
 
 
str=str+"</svg>";
 
$("#memo").html(str);   
 
}