* Bullet's convex hull implementation is significantly more robust
than the one I implemented, as well as being faster.
* This fixes bug [#32864] "Convex Hull fails in some cases."
projects.blender.org/tracker/?func=detail&aid=32864&group_id=9&atid=498
That bug, and others like it, relate to the poor handling of
co-planar surfaces in the input. Pretty much any model that is
simple-subdivided a few times gave very bad results before, Bullet's
implementation handles this much better.
* In order to ensure a smooth transition, the Bullet output is
translated into the existing HullTriangle hash structure. This makes
it easy to ensure that the existing slot output stays the same; the
interactions between the slots are somewhat complicated, detangling
is a TODO.
* Reviewed by Brecht:
https://codereview.appspot.com/6741063
- update face normals when triangulating.
- avoid divide by zero when interpolating customdata on a zero length edge.
- replace zero float comparisons with fabsf() < FLT_EPSILON to avoid numeric error.
also renamed BLI_heap_empty() --> BLI_heap_is_empty() so its obviously readonly function.
- define array sizes for functions that take vectors.
- quiet some -Wshadow warnings.
- some copy/paste error in readfile.c made it set the same particle recalc flag twice.
Made it so meshes, curves, surfaces and metaballs are scaling to a grid cell size,
which makes them behave consistently now.
There're still issues to be resolved still:
- Lattice is not scaled to grid cell size yet, it uses slightly different add
function which makes scaling a bit tricky and hacky. Would prefer to do a
bit bigger refactor here, so it's a TODO for now.
- Cameras, speakers and other helpers are not scaling. They don't have data
on which scale could be applied and perhaps it should be some kind of draw
scale. Also would consider it's a TODO for now.
When inset and bevel used the mouse input as a distance value, the change could be far too great when zoomed in, or far too small when zoomed out. Now get the pixel-size based on the center point of the selection.
* The symmetrize operation makes the input mesh elements symmetrical,
but unlike mirroring it only copies in one direction. The edges and
faces that cross the plane of symmetry are split as needed to
enforce symmetry.
* The symmetrize operator can be controlled with the "direction"
property, which combines the choices of symmetry plane and
positive-negative/negative-positive. The enum for this is
BMO_SymmDirection.
* Added menu items in the top-level Mesh menu and the WKEY specials
menu.
* Documentation:
http://wiki.blender.org/index.php/User:Nicholasbishop/Symmetrize
* Reviewed by Brecht:
https://codereview.appspot.com/6618059
Alt+V will fill the area inbetween the ripped faces - a bit like extrude.
faces are flipped to match existing geometry and customdata (uv, vcols etc) is copied from surrounding geometry too.
* Get rid of ED_object_add_generic_invoke() and all invoke callbacks using it, it was doing nothing exec() callbacks would not do. In fact, its only action (setting part of common add ops properties, like loc, layers, etc.) was needed too by direct exec call, so it was done twice in case of using invoke()!
* Replace custom invoke code for metaballs by WM_menu_invoke helper (as already used by lamps).
* Add a new OBJECT_OT_empty_add op, to allow direct addition of empties of a given drawtype.
* And some general code cleanup (like trailing spaces, empty lines, ...).
Did quite a bunch of tests/verifications, but obviously could not tackle all possible scenarios... Anyway, if any, bugs should arize quite quickly (but I don’t expect any! :p ).
- vertex to screenspace projections were not checking for failure to project (vertex behind the view for eg).
- vertex screenspace 2d vectors were each malloc'd and added to own ghash, then fetched for each edge.
now just store a vertex aligned array and do index lookups.
- projections were done in global space, now do them in object space (avoids a matrix multiply).
- error cases were commented out and would fail silently, now report them to the operator.
- remove MAX_CUTS hard coded limit, dynamically allocate the mouse path.
- add missing free calls in error cases.
