Good website/visualization, but I think the implementation can be improved. If I remember correctly, one of the strengths of DDA is that it works out entirely w

Good website/visualization, but I think the implementation can be improved. If I remember correctly, one of the strengths of DDA is that it works out entirely with integer math. I think you get there by multiplying out the denominators. Seeing that this implementation involves sqrt(), it probably has room for improvement.