Generalize logic for vert/edge/face selection:
- index cycling.
- selection bias with mixed modes.
Details:
- Edges now support index cycling (as verts/faces did already)
- Cycling over near elements is now only enabled when the mouse position remains the same.
- No longer do 2 selection passes to perform index cycling.
Fixes:
- Edges behind the view could be selected (surprising nobody reported!)
- Selection bias now only changes the element that gets picked without interning the return distance
(was buggy with mixed modes).
When mixing vert/edge/face with select-visible,
face selection could fail when not close enough to the center.
This also fixes a bug where the bias for verts over edges would
prefer faces over edges too, making edges harder to pick.
Mixing edge with other selection modes works more predictably now.
- distance from edge check wasn't clamping 0-1
- vertex bias wasn't taking pixelsize into account.
- index & pass counter were floats
Also some improvements
- use BMesh lookup tables when available.
- use structs to avoid issues getting out of sync.
Org code by robschia (Roberto Schiavone), first review by campbellbarton (Campbell Barton),
final review and minor changes by mont29 (Bastien Montagne).
Reviewers: cambellbarton, mont29
Subscribers: mont29, campbellbarton
Maniphest Tasks: T40930
Differential Revision: https://developer.blender.org/D638
Select operator that takes multiple selected face regions and
selects any number of matching regions (when they have distinguishing features to isolate them).
UI access next.
Manifold was defined as any edges not using 2 faces,
however its useful to have some options here.
You can now select between Wire/Boundary/Multi-Face/Non-Contiguous/Verts
Note the Non-Contiguous option is new,
it selects edges between faces pointing in different directions.
Now Alt+RMB,RMB will select all connected boundaries.
There are times when you just want to select an entire boundary loop
ignoring face topology, previously there was no way to do this.
