ばね８７ - 経済統計練習帳

var x,dx;
var b;
 
function sample() {
 
    b = 5;
    dx = 0;
    x = 100;
 
 
 var timer;
var delay = 100;
 
var loop = function () {
 
    var sub2 = new ex();
    sub2.b = b;
    sub2.dx = dx;
    sub2.x = x;
    sub2.move();
    x = sub2.x;
    dx = sub2.dx;
 
    paint();
 
 
 
 
    clearTimeout(timer);
    timer = setTimeout(loop, delay);
}
 
loop();
 
paint();
 
}   
 
function paint(){
 
var sub=new svgpaint();
 
str="<svg width=\"700\" height=\"700\">";    
str=str+sub.rect(200+x,250,50,50,"red");
str=str+"</svg>";
 
$("#memo").html(str);
 
 
}
 
 
class ex{
 
b:number;
dx:number;
x:number;
 
move():void{
 
var delta:number;
 
delta=0.1;
 
this.dx=this.dx-delta*this.b*this.x;
 
this.x=this.x+delta*this.dx;
 
}
 
 
}