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2018-04-29Put adaptagrams into its own folderMarc Jeanmougin1-218/+0
2017-07-01Updated libs from the Adaptagrams project: libavoid, libcola and libvspc; ↵Sylvain Chiron1-26/+198
changed the code to match the new API Signed-off-by: Sylvain Chiron <chironsylvain@orange.fr>
2013-10-16static code analysis: performanceKris De Gussem1-2/+2
(bzr r12695)
2011-10-23Documentation update pass.Jon A. Cruz1-4/+1
(bzr r10692)
2006-07-14- Connectors with end-markers now constrained to point downwards in graph layoutTim Dwyer1-0/+2
- vpsc namespace added to libvpsc (bzr r1408)
2006-07-12Previously graph layout was done using the Kamada-Kawai layout algorithm Tim Dwyer1-0/+0
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)
2006-05-10Apparently a problem was reported with one of the test cases. Tim Dwyer1-5/+23
I can't reproduce the problem, however solve_VPSC code in inkscape was getting quite out of date with that in www.sf.net/projects/adaptagrams. I've updated the code, which may fix the problem, or at least if it's reported again then I'll know it's still an issue. (bzr r803)
2006-02-06DBL_MIN replaced by -DBL_MAX which is what I meant all along.Tim Dwyer1-1/+1
Fixes bug. (bzr r89)
2006-01-26Constructor cleaned up a bit.Tim Dwyer1-9/+6
(bzr r31)
2006-01-26Fixed bug to do with comparison of invalid constraints in pairing heaps.Tim Dwyer1-1/+4
Also numerical problem with constraint generation fixed. (bzr r30)