Blender Git Loki

Fix for editmehs select grouped.
the function that compares 2 face areas/perimeters edge length now will match 2 zero area values (previous method to make the function compare proportionaly messed this up)

Bugfix #4363

In windows, without temp path set, the 'save buffers' render option crashes.

I've coded a blenlib BLI_is_writable(char *filename) to check for such
cases. This is not much needed in Blender, since the open() command is
checked for. However, file saving happens deep inside the C++ exr lib, and
it throws an exception crash when a file cannot be written.

Added a note about Draw.ColorPicker needed Draw.Register to have a non None event function.

Compositor: the default now doesn't include a Viewer node anymore, was too
confusing.

Bugfix #4355

Group appending issue: the rules for how this works were still confusing.
In some cases you want the objects in the scene itself, in others not.

New method:

- when you append a group directly (shift+f1 -> group -> name(s)) it
will both append the group and link objects to the current scene
- in all other cases it will only append a group itself.
(means, you can then use "Add group" to see it).

Bugfix #4354

Fix for old (post 2.3) annoyance in UI; on redraw of the entire buttons
window, the active button (with highlight) was detected wrong. Was just
a matrix calculation on wrong moment. :)

Also: fixed tooltip for transparent material "add" option. It was talking
about "Glow", a confusing description.

Fixed a mistake (probably mine) with the menu numbering, closing bug 4360

Seems a large commit, but I also changed function names to match the new
naming convention for Compositing:

- Render Result node -> Render Layers node (name only appears in Add menu)
- Compositor image -> Viewer Node image

I've also added a version patch (2.41 saved files only) to rename existing
"Compositor" Images.

* Patch from Ed Halley:
"Swaps left and right bytes of small cursors for Carbon on Intel."

This fixes garbled cursors on Intel Mac builds. Tested on my G4 too and it works fine.

* Added and tweaked some missing menu items

Made 3ds import remove 0,0,0 dummy vert (Thanks Ken)
removed set() from BpyMesh and added some uv utility functions.

bugfix/workaround for problem with hard-coded collision margins being too large. (part2)

bugfix/workaround for problem with hard-coded collision margins being too large.

NULL check needed for RE_vertren_get_rad() when going over radio results...
Thanks Auralis for finding it!

Scripts:
- Jean-Michel Soler updated the svg to obj module used by Paths
Importer (thanks!)
- user request: added option to control whether user prefers per face
(uv face select "TwoSided" toggle) or per mesh ("Double Sided") single /
double face info in ac3d exporter.

BPY:
- Blender_ShowHelp() was now crashing Blender when called for the
second time, due to EXPP_dict_set_item_str decrementing the reference
count of an object passed as argument to Blender_ShowHelp() (so not
owned by that function).

Fix #4352

Sequencer render bug: if you use the same Scene as current Scene as a strip
(yes yes!) then ANIM didn't work. Render single frame worked.

Bugfix #4352

More Sequence render fixes:

- on load of .blend file, with Sequencer invoking a sequence render, the
header window matrix was not set, giving "Insane icon" prints
- option "Do Sequence" had no re-display call in end

Bugfix #4351

ESC wasn't supported for sequence-based rendering yet.
Solved it with correctly initializing the sequence render with all
render callbacks, including render updates (which it didn't do yet).

Cleanup:

- Bug in ghostwinlay code: the get_mbut() function reads from the window
struct if a mouse is pressed. However, when you press the mouse in the
sequencer, which causes a render, this value was hanging because then
the active window was a render window.

- The new render display options (image window) didn't work for sequence
render OK. There was a recursion even, because a sequence draw command
calls a render, which in turn now calls redraws.

Also for new 'to image window' rendering, drawing of float buffers while
rendering now is full 32 bits. This gives drawing issues in some cards,
like ATIs.

Copied the function used for renderwindow to glutil.c, and used now in the
image window.

Bug #4348

Animated groups, being linked and dupli-grouped in other file, didn't
correctly calculate particles inside the group.