diff options
| author | Tim Dwyer <tgdwyer@gmail.com> | 2006-07-12 00:55:58 +0000 |
|---|---|---|
| committer | tgdwyer <tgdwyer@users.sourceforge.net> | 2006-07-12 00:55:58 +0000 |
| commit | 12b21e1d27f43deaa748419919b40b80cedd0ddd (patch) | |
| tree | 9748126a763c5a10b9ee25401cf2463a65a2aed6 /src/libvpsc/variable.cpp | |
| parent | update (diff) | |
| download | inkscape-12b21e1d27f43deaa748419919b40b80cedd0ddd.tar.gz inkscape-12b21e1d27f43deaa748419919b40b80cedd0ddd.zip | |
Previously graph layout was done using the Kamada-Kawai layout algorithm
implemented in Boost. I am replacing this with a custom implementation of
a constrained stress-majorization algorithm.
The stress-majorization algorithm is more robust and has better convergence
characteristics than Kamada-Kawai, and also simple constraints can be placed
on node position (for example, to enforce downward-pointing edges, non-overlap constraints, or cluster constraints).
Another big advantage is that we no longer need Boost.
I've tested the basic functionality, but I have yet to properly handle
disconnected graphs or to properly scale the resulting layout.
This commit also includes significant refactoring... the quadratic program solver - libvpsc (Variable Placement with Separation Constraints) has been moved to src/libvpsc and the actual graph layout algorithm is in libcola.
(bzr r1394)
Diffstat (limited to '')
| -rw-r--r-- | src/libvpsc/variable.cpp (renamed from src/removeoverlap/variable.cpp) | 0 |
1 files changed, 0 insertions, 0 deletions
diff --git a/src/removeoverlap/variable.cpp b/src/libvpsc/variable.cpp index 1890f788e..1890f788e 100644 --- a/src/removeoverlap/variable.cpp +++ b/src/libvpsc/variable.cpp |