Blender Git Loki

Use an enum type for solver in boolean modifier.

This matches what was done in a previous commit for the tool.
It makes it easier to associate a tooltip with each choice.
For this branch, I have the default solver be the Exact one;
when we merge to master, we will have to decide the best default.
Make format caught a coouple other files, sorr for not doing those
earlier.

Use custom layout for intersect tools, with expanded choices.

Makes "Exact" vs "Fast" a choice with tooltips for each.
Hides merge threshold when in Exact mode.

Renamed boolean to meah_boolean in BLI file names.

Merge branch 'master' into newboolean

Revert "Use std::abs instead of fabs in C++ code."

This reverts commit eac84bf52724b082cd2d0aa2ba7669e8053c342a.

Using std::abs causes ambiguity problems when compiling on a Mac.

Use std::abs instead of fabs in C++ code.

Use std::lower_bound instead of custom binary search.

Fix memory leak in delaunay C interface code.

Fix crash in Debug build for some cases of no intersects.

Merge branch 'master' into newboolean

Better performance when there are clusters of coplanar triangles.

Added a sphere/grid test to mesh intersect performance tests.

Tweaked the performance debugging gathering.

Add support for non-closed-volume arguments.

Use a "generalized winding number" calculation to get an inside/outside
test that works reasonably well when meshes aren't closed.
This change allows one to use a plane as the cutter in a difference
operator and get the expected results.

Let Boolean be seen in edit mode, if enabled.

Since the beginning of time, Boolean has not supported this.
While it might be too slow for some uses, it seems that the user
should be able to decide whether to use it or not.

Fixed a bug in dissolving triangulation edges.

If an original face was divided into triangles with different
orientations, the program would crash. Fixed now.

Merge branch 'master' into newboolean

Added more debugging help.

Checking for PWN.

The current code is only supposed to work if the input meshes
are "piecewise constant winding number" (PWN). Added a check
to see if this is true about the inputs.

Fix the nearest point containing cell when nearest is inside a tri.