[#25159] Vertex locations dont read correctly and are not labeled correctly in the properties bar.
- non rna buttons can now have units set.
- calls with invalid units system now raises an assert().
- include .mxf in filter.
- ortho grid now draws scaled by the view3d 'Scale' setting, venomgfx noticed this was missing.
- so as not to confuse add scale next to unit display text, so rather then "Metres" it shows "Metres x 1.5" otherwise its confusing that grid lines are not in exact units.
- changed grid spacing to grid scale (needed for more logical behavior with units)
- when units are enabled grey out subdivisions.
- rna buttons with units set now use the units base value for snapping.
- bone head/tail radius could be set negative.
matt: removed a check in ui_is_but_unit() which made angle buttons return false, what was this for?
from Lorenzo Tozzi (oni_niubbo) with minor edits.
--- from the tracker
The present situation is this: due to bug#22274, during editing, UTF chars are stripped from buttons with a unit associated
(length, angles, etc.).
Example: if the button displays '90°' and you click on it with LMB, the editing string will become '90'.
The problem arises if you use microns: '34µm' becomes '34' that blender interprets as 34 meters. So clicking on a button
and hitting enter won't confirm the previous value, but will change it (very badly also).
Of course nobody is using microns in blender, but the problem will arise when we will implement areas and option 'Separate
Units' will be enabled. The value '2m² 3cm²' will become '2m' during editing.
This patch solves the problem rewriting the string in a smarter way than just stripping the UTF chars: the unit is translated
from unit->name_short ('µm') to unit->name_alt ('um'). So clicking on '34µm' the editing string will become
'34um'.
--- end
note: rather then allowing empty strings in name_alt field I made it so if the unit system was the default one a NULL name_alt will just strip the string, since its the default its not needed.
- currently only distances work.
- user preferences, edit section to set the units and scale.
- option to display pairs (nicer for imperial display?)
- support for evaluating multiple comma separated values eg: 2',11" ..or.. 5ft, 4mil
- comma separated expressions/values accumulate 1+1,2**3,4cm/3
- attempted fast conversion from a value to a string so button drawing isn't too slow.
* imperial long/short *
- mile, mi
- yard, yd
- foot, '
- inch, "
- thou, mil
* metric long/short *
kilometer, km
meter, m
centimeter, cm
millimeter, mm
micrometer, um
nanometer, nm
picometer, pm
