Computation times

00:40.355 total execution time for 5 files from examples/gallery_examples/01-geometry:

Example	Time	Mem (MB)
Primitives (04-primitives.py)	00:16.473	0.0
Volumes (03-volumes.py)	00:14.339	0.0
Lines (01-lines.py)	00:04.931	0.0
Areas (02-areas.py)	00:03.748	0.0
Keypoints (00-keypoints.py)	00:00.863	0.0