PHP:Flags with Polygons Tutorial
A polygon is a closed shape made up of straight lines (like a triangle or a square). See PHP:Polygons for details of how to do this.
The Napier flag is a red triangle on a white square. It suggests the
We create a polygon in order to fill it. The http://uk.php.net/manual/en/function.imagepolygon.php ImagePolygon is part of the standard PHP4 package. We create a polygon points array, then call the ImagePolygon method.
To complete the flag of the Bahamas you must add the black triangle which represents the unity and vigour of the people.
We need to draw four triangles in order to draw the flag of Jamaica. If we get it right we will leave a yellow cross.
The Seychelles has a cheerful flag; four triangles and a quadrilateral.
We tire of coming up with names for our polygons. In this example we reuse the same old polygon.