drawRoundedRect-Demo.js

  g.setBgColor('#000000');
  g.clear(false);

  if (g.drawRoundedRect == null) {
    g.drawRoundedRect = function drawRoundedRect (x1,y1, x2,y2, r) {
      let x,y;
      if (x1 > x2) { x = x1; x1 = x2; x2 = x; }
      if (y1 > y2) { y = y1; y1 = y2; y2 = y; }

      r = Math.min(r || 0, (x2-x1)/2, (y2-y1)/2);

      let cx1 = x1+r, cx2 = x2-r;
      let cy1 = y1+r, cy2 = y2-r;

      this.drawLine(cx1,y1, cx2,y1);
      this.drawLine(cx1,y2, cx2,y2);
      this.drawLine(x1,cy1, x1,cy2);
      this.drawLine(x2,cy1, x2,cy2);

      x = r; y = 0;

      let dx,dy, Error = 0;
      while (y <= x) {
        dy = 1 + 2*y; y++; Error -= dy;
        if (Error < 0) {
          dx = 1 - 2*x; x--; Error -= dx;
        }

        this.setPixel(cx1 - x, cy1 - y);  this.setPixel(cx1 - y, cy1 - x);
        this.setPixel(cx2 + x, cy1 - y);  this.setPixel(cx2 + y, cy1 - x);
        this.setPixel(cx2 + x, cy2 + y);  this.setPixel(cx2 + y, cy2 + x);
        this.setPixel(cx1 - x, cy2 + y);  this.setPixel(cx1 - y, cy2 + x);
      }
    };
  }


  g.setColor('#FF0000');
  g.drawRoundedRect(20,30, 80,120, 10);

  g.setColor('#00FF00');
  g.drawRoundedRect(160,50, 70,80, 20);

  g.setColor('#0000FF');
  g.drawRoundedRect(50,140, 130,60, 100);