Most important changes are in the Animation exporter and Animation Importer.
There is still some cleaning up to be done. But the Exporter/Importer basically
work within Blender 2.8
Some details:
User Interface:
The interface has been reorganized to look more like the FBX interface.
New options in user interface:
* keep_keyframes:
When sampling the distance between 2 keyframes is defined by
the sampling rate. Furthermore the keyframes defined in the
FCurves are not exported. However when this option is enabled
then also the defined keyframes will be added to the exported fcurves
* keep_smooth_curves:
When sampling we do not use FCurves. So we also have no Curve handles
for smooth exporting. However when this option is enabled, Blender
does its best to recreate the handles for export. This is a very
experimental feature and it is know to break when:
- the exported animated objects have parent inverse matrices
different from the unit matrix
- The exported objects have negative scaling
There may be many other situations when this feature breaks.
This needs to be further tested. It may be removed later or replaced
by something less wonky.
BlenderContext:
is a new class that contains the bridge to Blender. It contains
pointers to the current export/import context plus derived values
of Depsgraph, Scene, Main
Reporting:
I reorganized the output on the Blender Console to become more
informative and more readable
Preservation of Item names:
name attributes are now encoded with XML entities. This makes
sure that i can export/import names exactly defined in the tool.
This affects material names, bone names and object names.
Hierarchy export:
* Object and Bone Hierarchies are now exported correctly
by taking the Blender parent/child hierarchy into account
* Export also not selected intermediate objects
Problem:
When we export an Object Hierarchy, then we must export
all elements of the hierarchy to maintain the transforms. This
is especially important when exporting animated objects, because the
animation curves are exported as relative curves based on the
parent-child hierarchy. If an intermediate animated object is missing
then the exported animation breaks.
Solution:
If the "Selected" Optioon is enabled, then take care
to also export all objects which are not selected and hidden,
but which are parents of selected objects.
Node Based Material Importer (wip):
Added basic support for Materials with diffuse color and
diffuse textures. More properties (opacity, emission) need
changes in the used shader.
Note: Materials are all constructed by using the principled BSDF shader.
Animation Exporter:
* Massive optimization of the Animation Bake tool (Animation Sampler).
Instead of sampling each fcurve separately, i now sample all
exported fcurves simultaneously. So i avoid many (many!)
scene updates during animation export.
* Add support for Continuous Acceleration (Fcurve handles)
This allows us to create smoother FCurves during importing Collada
Animation curves. Possibly this should become an option ionstead of
a fixed import feature.
* Add support for sampling curves (to bake animations)
* The animation sampler now can be used for any animation curve.
Before the sampler only looked at curves which are supported by
Standard Collada 1.4. However the Collada exporter currently
ignores all animation curves which are not covered by the 1.4.1
Collada Standards. There is still some room for improvements
here (work in progres)
Known issues:
* Some exports do currently not work reliably, among those
are the camera animations, material animations and light animations
those animations will be added back next (work in progres)
* Exporting animation curves with keyframes (and tangents)
sometimes results in odd curves (when parent inverse matrix is involved)
This needs to be checked in more depth (probably it can not be solved).
* Export of "all animations in scene" is disabled because the
Collada Importer can not handle this reliably at the
moment (work in progres).
* Support for Animation Clip export
Added one extra level to the exported animations
such that now all scene animations are enclosed:
<Animation name="id_name(ob)_Action">
<Animation>...</Animation>
...
</Animation>
Animation Importer:
* Import of animations for objects with multiple materials
When importing multiple materials for one object,
the imported material animation curves have all been
assigned to the first material in the object.
Error handling (wip):
The Importer was a bit confused as it sometimes ignored fatal
parsing errors and continued to import. I did my best to
unconfuse it, but i believe that this needs to be tested more.
Refactoring:
update : move generation of effect id names into own function
update : adjust importer/exporter for no longer supported HEMI lights
cleanup: Removed no lopnger existing attribute from the exporter presets
cleanup: Removed not needed Context attribute from DocumentExporter
fix : Avoid duplicate deletion of temporary items
cleanup: fixed indentation and white space issues
update : Make BCAnimation class more self contained
cleanup: Renamed classes, updated comments for better reading
cleanup: Moved static class functions to collada_utils
cleanup: Moved typedefs to more intuitive locations
cleanup: indentation and class method declarations
cleanup: Removed no longer needed methods
update : Moved Classes into separate files
cleanup: Added comments
cleanup: take care of name conventions
... : many more small changes, not helpful to list them all
- Z shows pie menu (removed wire/xray toggles).
- Alt-Z toggles x-ray.
- Shift-Z toggles wireframe.
- Shift-Alt-Z toggles overlays.
Note that toggle overlays had no binding for 2.7x,
this is likely not a heavily used option and could even be left out.
Wasn't working well with armatures used ctrl-tab
to switch to pose mode, making tab always switch to pose mode
w/ this preference enabled.
Now always show pie-menu.
* Annotation tools now have Alt+LMB as for erase, like sculpt.
* In the LMB keymap, Shift+RMB drag now transforms 3D cursor for easy snapping.
* Curve edit mode draw is now only availble as tool, solves 3D cursor conflict.
bpy_extras were meant to be useful high-level helper functions for
script authors to perform common operations,
to avoid writing to verbose API's.
bpy_extras.keymap_utils contains some specialized API calls
mainly intended for Blender's own internal use.
Move keymap import export to internal API.
Only use confirmation w/ X-key since this is more likely to be pressed
by accident. Delete-key delete doesn't confirm.
Part of D3953 by @Zachman w/ edits
Most themes have missing/wrong settings due to the new editors in 2.8
A Call-for-content has been made at devtalk.blender.org for the community to contribute new ones.
Blender defaults data-file was loading it's own key-map
with a capital 'B', the preset would load it again w/ a lowercase name.
Use lowercase key-map names.
Both the active tools and selection are now on LMB, which leads to
various conflicts.
For that reason the LMB keymap now has a couple of differences
compared to before. These changes do not affect the RMB keymap.
* Context Menu: W -> RMB
* Select Tool activate: None -> W
* Set Cursor: RMB -> Shift+RMB
* Loop Select: Alt+LMB -> double click LMB
* Mask Feather Vertex Slide: Shift+RMB -> Ctrl+Shift+RMB
* Node Select: only with LMB now, no RMB
The idea behind the W key Select Tool shortcut is that various
tools can't be combined with selection, unlike the RMB keymap.
So this works as a quick shortcut to drop a tool
and go back to selection.
Tools: set Select Box tool as default, rather than Cursor.
This goes along with coming LMB select keymap changes,
where we want the user to be able to LMB click to select by default,
rather than set the cursor.
The cursor will still be directly setabble with shift+RMB.
For Blender builtin configurations the option to choose the select mouse remains
and is now also in the splash screen. It works by changing the keymap dynamically
in the script, rather than using special events.
The system of automatic switching of events was not flexible enough to deal with
side effects that require further keymap changes, so it is now under more manual
control in the script.
This breaks compatibility for some scripts and exported key configurations.
These can be fixed by replacing SELECTMOUSE, ACTIONMOUSE, EVT_TWEAK_S and
EVT_TWEAK_A with appropriate LEFTMOUSE, RIGHTMOUSE, EVT_TWEAK_L and
EVT_TWEAK_R events.
Other than that, there should be no functional changes.
