temsh - 経済統計練習帳

var x = new Array();
var y = new Array();
var th, len;
 
function sample(){
 
for(s=1;s<251;s++){
x[s]=new Array();
y[s]=new Array();   
}
 
for (s = 1; s < 251; s++) {
    for (sx = 0; sx < 360; sx++) {
        x[s][sx] = 250 + s * Math.cos(sx * Math.PI / 180);
        y[s][sx] = 250 + s * Math.sin(sx * Math.PI / 180);
    }
}
 
   th = 90;
 
   dy = -1;
 
    len = 200;
 
var timer;
var delay = 100;
 
var loop = function () {
 
    th = th + 1;
 
    if (th > 359) th = th - 360;
    if (th < 0) th = th + 360;
 
 
    len = len + dy;
    if (len < 100) dy = 1;
    if (len > 249) dy = -1;
 
    h = 0;
    if (th < 280) h = h + 1;
    if (th > 260) h = h + 1;
    if (len > 240) h = h + 1;
    if (h == 3) th = 90;
    if (h == 3) len = 250;
 
    paint();
 
    clearTimeout(timer);
    timer = setTimeout(loop, delay);
}
 
loop();
 
 
 
 
}
 
function paint(){ 
 
    var sub=new svgpaint();
 
str="<svg width=\"500\" height=\"500\">";
str = str + sub.rect(x[len][th], 500 - y[len][th], 10, 10, "red");
str=str+"</svg>";
 
    $("#memo").html(str);   
 
}