This is probably versioning issue happened when both trunk and tomato
were mixed to work on the same file.
Anyway, there're few files here locally and it's probably other users
do have the same files, so lets keep things safe here :)
- Fixed issue with black areas appearing when too many sites
are defined.
Currently tweak epsilon value for this, but probably actual
issue is somewhere else, can't see it yet.
- Fixed issue with bright pixels appearing in the sites, was
caused by accumulating color for pixels, which isn't needed.
Once color for pixel was set stop iterating via triangles.
Could give some speedup too.
- Ignore markers which are outside of frame bounds, they were
giving bad triangulation and they can't affect on gradient
due to color fir such sites is not known.
- Sites used to be created at position without track offset
taken into account.
When creating tile data include only triangles which have got intersection
with tile's rectangle only. This saves quite a lot of per-pixel iterations
through triangles which simply can not affect on current tile.
In fact, it's AABB check is used here. It could be improved further, but
it'll slowdown tile data generation with questionable speedup.
Another major slowdown is in fact caused by voronoi triangulation code.
Currently it's used naive algorithm which is O(N^2) where N is number
of edges. Added few euristics there and removed unused part of code, which
gave quite noticeable speedup already.
This could be improved further, but this node is not ment to be used for
lots of markers. It's also generates wrong triangulation when there're
many sites used. Need to be investigated further.
- Re-arrange functions in headers and implementation file to make them
more grouped by entity they're operating with. Also order of functions
in implementation file should match order of functions in header for
easier navigation.
- Rename some functions to match conventions of naming public functions.
- Some code de-duplication, still some room for improvements tho.
- Split main 2D tracking functions into smaller steps to make it more clear.
Accidentally OpenMP was disabled in some of previous commits, re-enable it.
Merge Keying Screen node developed in tomato branch into trunk.
This node is aimed to make dealing with non-even greenscreens better
by generating gradiented image which could be used a input for keyer
nodes.
Based on building voronoi diagram using motion tracking markers as
sites position and average pattern color as color for that site.
Pretty straignforward node, some documentation is there
http://wiki.blender.org/index.php/User:Nazg-gul/Keying#Screen_color
