def snap(line_collection: vp.LineCollection,
pitch: float) -> vp.LineCollection:
"""Snap all points to a grid with with a spacing of PITCH.
This command moves every point of every paths to the nearest grid point. If sequential
points of a segment end up on the same grid point, they are deduplicated. If the resulting
path contains less than 2 points, it is discarded.
Example:
Snap all points to a grid of 3x3mm:
vpype [...] snap 3mm [...]
"""
line_collection.scale(1 / pitch)
new_lines = vp.LineCollection()
for line in line_collection:
new_line = np.round(line)
idx = np.ones(len(new_line), dtype=bool)
idx[1:] = new_line[1:] != new_line[:-1]
if idx.sum() > 1:
new_lines.append(np.round(new_line[idx]))
new_lines.scale(pitch)
return new_lines
def _all_line_collection_ops(lc: LineCollection):
lc.merge(1)
lc.scale(2, 2)
lc.translate(2, 2)
lc.rotate(10)
lc.reloop(1)
lc.skew(4, 4)
lc.bounds()
