Ask a question about algorithm

[nuzzle]

Well, does it seem to work?

Note that incrementing a floating point in a loop like this,

for (double cx = recVertex.x; cx <= recVertex.x + LENGTH; cx += 0.5)

generally should be avoided because small conversion errors tend to be magnified as looping proceeds. It may not cause any harm in this case because the increment 0.5 can be exactly represented in binary but still it's safer to avoid it.