problem was that BMesh had tessellation call when undo pushes were called.
if python called an operator with no undo push, tessfaces would not be created.
fix this by making it the responsibility of each editmesh operator to re-tessellate, as it is with notifiers and depsgraph.
added EDBM_update_generic() function to add notifier, tag for depsgraph update and optionally re-tessellate.
Was missed check for if modifier is available for particular object type
which ended up with unpredictable results when modifier which isn't supported
yet for some object type as linked to that object type.
- spelling - turns out we had tessellation spelt wrong all over.
- use \directive for doxy (not @directive)
- remove BLI_sparsemap.h - was from bmesh merge IIRC but entire file commented and not used.
not pick the right object. This operator had two properties "object" and
"type", but the latter was used while the former had the right description.
Now changed it to have only an "object" property, so that the above code works.
In fact, error was much deeper and DND parenting in outliner used to parent all selected
objects to drop target, not just currently dragging object.
This was caused by code sharing between Parent Set operator and this DND operator which
was iterating all selected objects in scene and was setting parent to it.
Solved issue by separating actual parenting code which makes specified object be parented
to specified parent and moved iterating to Parent Set exec callback.
Now both of discovered issues (unneeded loop error and parenting all selected objects)
are solved, but more extensive testing of this changes are welcome.
These changes are to make the bmesh api more consistent and easier to learn, grouping similar functions which is convenient for autocomplete.
This uses similar convention to RNA.
* use face/loop/edge/vert as a prefix for functions.
* use 'elem' as a prefix too for functions that can take any type with a BMHeader.
* changed from camel case to underscore separated (like RNA).