Why does the line clipper add a tiddly amount (d) in these expressions?
double d = 0.00001; if (t[0] > 0) ends[0] = new Coord((int) (y0 + t[0] * dy + d), (int) (x0 + t[0] * dx + d));
if (t[1] < 1) ends[1] = new Coord((int)(y0 + t[1] * dy + d), (int) (x0 + t[1] * dx + d));
It for rounding to the nearest map unit. I remember I was just adjusting it until I got something that worked, but can't quite remember what the problem I was solving was.
If I'd thought about it more I would have said that the correct value would be:
360/(2 * 2^24)
which comes to 0.000010728, so perhaps close enough.
Shouldnt this rounding be performed in the constructor of the Coord? Then the rounding gets applied on every Coord, no matter, how it gets constructed.