octantCoords static method
Returns the octant of a directed line segment from p0 to p1.
Implementation
static int octantCoords(Coordinate p0, Coordinate p1) {
double dx = p1.x - p0.x;
double dy = p1.y - p0.y;
if (dx == 0.0 && dy == 0.0)
throw ArgumentError(
"Cannot compute the octant for two identical points $p0");
return octant(dx, dy);
}