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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)
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definition):
src/removeoverlap/constraint.h
src/removeoverlap/variable.h
* Add font-lister.h/font-lister.cpp:
src/libnrtype/Makefile_insert
src/libnrtype/font-lister.cpp
src/libnrtype/font-lister.h
* Modify dialog slightly in appearance (shadow for GtkScrolledWindow):
src/dialogs/text-edit.cpp
(bzr r866)
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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was getting quite out of date with that in www.sf.net/projects/adaptagrams.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)
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Also numerical problem with constraint generation fixed.
(bzr r30)
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