What
we noticed is that, if a point exceeds the max_distance in Z
direction, but within the max_distance in x and y, it is still
removing that point.
By default simplify() use:
- the default simplify strategy,
bg::strategy::simplify::douglas_peucker,
- the default point-segment strategy, in cartesian
bg::strategy::distance::projected_point,
- the default point-point strategy, in cartesian
bg::strategy::distance::pythagoras,
The first strategy is CS-agnostic and the two other strategies are
N-dimensional. The projected_point strategy first calculates the
coordinates of a point projected into a segment and then calculates
the distance between this point and the original point using
pythagoras strategy. So a point is removed when a distance between
this point and a segment created between currently analysed
endpoints in douglas_peucker strategy is lesser than max_distance.
Do
you have a example where it works in the z direction too?