Avoid accessing object mode via the view layer active object
when drawing since it's done everywhere we store the active object mode
in the draw-context.
The problem is that string width computing is performed in integers
(pixels), which can generate a rather annoying error (a few pixels)...
Simply work around that for now, by trimming an extra middle char when
needed.
`to_strlen` just benefits from using pre-computed kerning table for
ascii chars (gives about 30% speed improvements).
`to_rstrlen` was re-written and heavily simplified, basically using same
logic as `to_strlen`, and `BLI_str_find_prev_char_utf8()` to loop
backward in the string, instead of looping forwards the whole string,
storing each gliph's width in temp array, and looping backward on that
temp array to find final string matching expected width. Gives about 70%
speed improvements!
And both functions can now share their core logic.
This parameter allows to define the percentage of offset of a stroke when uses surface mode.
Before, this was a fixed value, but for some artists' purposes, it's good to have the option to change it.
Users can select the main unit they want to use now.
Previously the displayed unit always depended on the magnitude of the value.
The old behavior can be restored by switching to the "Adaptive" mode for length, mass and time units.
Meters, kilograms and seconds are the default units for new and old scenes.
The selected unit is also the default unit for user input.
E.g. if cm is selected, whenever the user inputs a unitless number into a field of type length, it will be interpreted as cm.
Reviewer: brecht
Differential: https://developer.blender.org/D3740
This includes all the modes that don't need multi-object support:
* SIMEDBONE_CHILDREN
* SIMEDBONE_CHILDREN_IMMEDIATE
* SIMEDBONE_SIBLINGS
* SIMEDBONE_GROUP
* SIMEDBONE_SHAPE
Unlike the mesh select similar operator, in this case we take
only the active bone in consideration, not all the selected ones.
I decided not to change that, and keep this 2.79 behaviour.
We could though if we want to.
It is crucial that scripts do not write, and even more importantly, do
not store any references to those. Otherwise, that’s a rather straight
path to crash.
This is quite an obscure option only useful in rare cases,
when enabled by accident it's confusing since single objects
can't be transformed.
Also, w/ 2.8x you don't see the option change in the header.
