Changes in Makefile_insert http://src.iws.cs.ovgu.de/source/rss/inkscape/src/libcola/Makefile_insert en Copyright 2005 Java Layout algorithm is now applied to each connected component in the selection separately. Previously, behaviour of layout on disconnected graphs was... undefined! /inkscape/src/libcola/Makefile_insert - 6931de4f317866a8d4874fa7f08926b91f55debf tgdwyer <tgdwyer@users.sourceforge.net> 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. /inkscape/src/libcola/Makefile_insert - 1ec681f88b68c6186b267afcce12c7fd667cc9f8 tgdwyer <tgdwyer@users.sourceforge.net>