Nyall Dawson 7b41268c99 Ensure that default shape properties for 3d symbols are only
stored in a single place, and that we always use the default
value when its not overwise set

This has two benefits:
1. The user doesn't see confusing "0" values for radius/length etc,
which are silently treated as some other fixed value when rendering
2. The default values are correctly accounted for when calculating
the layer's AABB, otherwise we end up with a flat AABB by
default
2023-12-23 06:38:43 +10:00
..
2023-12-18 12:07:17 +01:00