Notes:
The pattern uses the TNTSpetal shape from the TNT JSGS Library. The tiling is achieved by a classic nested for loop which is built from left to right, top to bottom. The color of the ants is achieved with a clever use of the modulus operator as shown:
if (x * y % 2 == 0) {
fcolr = red;
} else {
fcolr = black;
}
