Function imageScanline

mapgd.c:122–133

static void imageScanline(gdImagePtr im, int x1, int x2, int y, int c)
{
  int x;

  /* TO DO: This fix (adding if/then) was to address circumstances in the polygon fill code */
  /* where x2 < x1. There may be something wrong in that code, but at any rate this is safer. */

  if(x1 < x2)
    for(x=x1; x<=x2; x++) gdImageSetPixel(im, x, y, c);
  else
    for(x=x2; x<=x1; x++) gdImageSetPixel(im, x, y, c);
}

/*
** Polygon fill. Based on "Concave Polygon Scan Conversion" by Paul