/*
    Slope-intercept algorithm
    for line drawing.
    Requires some class to draw pixels, build color RGB codes.
    Public domain source code provided by scriptol.com.
*/


public void lineSimple(int x0, int y0, int x1, int y1, Color color)
    {
        int pix = color.getRGB();
        int dx = x1 - x0;
        int dy = y1 - y0;

        raster.setPixel(pix, x0, y0);

        if (dx != 0) 
       {
            float m = (float) dy / (float) dx;
            float b = y0 - m*x0;
            dx = (x1 > x0) ? 1 : -1;
            while (x0 != x1) {
                x0 += dx;
                y0 = Math.round(m*x0 + b);
                raster.setPixel(pix, x0, y0);
            }
        }
    }