public static void drawline_v2(BufferedImage img, int x0, int y0, int x1, int y1) {
        float t = 0;
        int x, y;
        int dx = x1 - x0;
        int dy = y1 - y0;
        if (dx > dy) {
            for (x = x0; x <= x1; x++) {

                t = (x - x0) / (float) (x1 - x0);
                y = Math.round(y0 + (y1 - y0) * t);
                img.setRGB(x, y, 0xffffffff);
            }
        } else {
            for (y = y0; y <= y1; y++) {
                t = (y - y0) / (float) (y1 - y0);
                x = Math.round(x0 + (x1 - x0) * t);
                img.setRGB(x, y, 0xffffffff);
            }
        }

    }