メモ１ - パラボラの説明書

正葉曲線

   *x = cos(th) * (4 * sin(4 * th));
   *y = sin(th) * (4 * sin(7 * th));

描画部

 for(th = 0 ; th <= 1080.0 / 180.0 * 3.141592 ; th += 1.0 / 180.0 * 3.141592){
   func(&x,&y,th);
   x1 = xhome + MAG * x;
   y1 = yhome - MAG * y;
               
   GWline(x0,y0,x1,y1);
               
   x0 = x1;
   y0 = y1;
 }