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Diffstat (limited to 'src/3rdparty/adaptagrams/libcola/cc_clustercontainmentconstraints.cpp')
| -rw-r--r-- | src/3rdparty/adaptagrams/libcola/cc_clustercontainmentconstraints.cpp | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/src/3rdparty/adaptagrams/libcola/cc_clustercontainmentconstraints.cpp b/src/3rdparty/adaptagrams/libcola/cc_clustercontainmentconstraints.cpp new file mode 100644 index 0000000..390f5e1 --- /dev/null +++ b/src/3rdparty/adaptagrams/libcola/cc_clustercontainmentconstraints.cpp @@ -0,0 +1,194 @@ +/* + * vim: ts=4 sw=4 et tw=0 wm=0 + * + * libcola - A library providing force-directed network layout using the + * stress-majorization method subject to separation constraints. + * + * Copyright (C) 2010 Monash University + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * See the file LICENSE.LGPL distributed with the library. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Author(s): Michael Wybrow + * +*/ + +#include <sstream> + +#include "libcola/cola.h" +#include "libcola/compound_constraints.h" +#include "libcola/cc_clustercontainmentconstraints.h" + +using vpsc::XDIM; +using vpsc::YDIM; + + +namespace cola { + +static const int AboveBoundary = 1; +static const int BelowBoundary = -1; + +class ClusterShapeOffsets : public SubConstraintInfo +{ + public: + ClusterShapeOffsets(unsigned ind, vpsc::Dim dim, double offset, int boundarySide, + unsigned int boundaryVar) : + SubConstraintInfo(ind), + offset(offset), + dim(dim), + boundarySide(boundarySide), + boundaryVar(boundaryVar) + { + } + double offset; // half the width or height value + vpsc::Dim dim; // The dimension + int boundarySide; // The boundary side we are constraining on. + unsigned int boundaryVar; // The boundary var. +}; + + +ClusterContainmentConstraints::ClusterContainmentConstraints(Cluster *cluster, + unsigned int priority, std::vector<vpsc::Rectangle*>& boundingBoxes) + : CompoundConstraint(vpsc::HORIZONTAL, priority) +{ + Box padding = cluster->padding(); + _combineSubConstraints = true; + for (std::set<unsigned>::iterator curr = cluster->nodes.begin(); + curr != cluster->nodes.end(); ++curr) + { + unsigned id = *curr; + double halfW = (boundingBoxes[id]->width() / 2.0); + double halfH = (boundingBoxes[id]->height() / 2.0); + _subConstraintInfo.push_back(new ClusterShapeOffsets( + id, XDIM, halfW + padding.min(XDIM), AboveBoundary, + cluster->clusterVarId)); + _subConstraintInfo.push_back(new ClusterShapeOffsets( + id, XDIM, halfW + padding.max(XDIM), BelowBoundary, + cluster->clusterVarId + 1)); + _subConstraintInfo.push_back(new ClusterShapeOffsets( + id, YDIM, halfH + padding.min(YDIM), AboveBoundary, + cluster->clusterVarId)); + _subConstraintInfo.push_back(new ClusterShapeOffsets( + id, YDIM, halfH + padding.max(YDIM), BelowBoundary, + cluster->clusterVarId + 1)); + } + for (std::vector<Cluster *>::iterator curr = cluster->clusters.begin(); + curr != cluster->clusters.end(); ++curr) + { + Cluster *childCluster = *curr; + Box margin = childCluster->margin(); + _subConstraintInfo.push_back(new ClusterShapeOffsets( + childCluster->clusterVarId, XDIM, + padding.min(XDIM) + margin.min(XDIM), AboveBoundary, + cluster->clusterVarId)); + _subConstraintInfo.push_back(new ClusterShapeOffsets( + childCluster->clusterVarId + 1, XDIM, + padding.max(XDIM) + margin.max(XDIM), BelowBoundary, + cluster->clusterVarId + 1)); + _subConstraintInfo.push_back(new ClusterShapeOffsets( + childCluster->clusterVarId, YDIM, + padding.min(YDIM) + margin.min(YDIM), AboveBoundary, + cluster->clusterVarId)); + _subConstraintInfo.push_back(new ClusterShapeOffsets( + childCluster->clusterVarId + 1, YDIM, + padding.max(YDIM) + margin.max(YDIM), BelowBoundary, + cluster->clusterVarId + 1)); + } +} + + +std::string ClusterContainmentConstraints::toString(void) const +{ + std::ostringstream stream; + stream << "ClusterContainmentConstraints()"; + return stream.str(); +} + + +void ClusterContainmentConstraints::generateVariables(const vpsc::Dim dim, + vpsc::Variables& vars) +{ + COLA_UNUSED(dim); + COLA_UNUSED(vars); +} + + + +SubConstraintAlternatives +ClusterContainmentConstraints::getCurrSubConstraintAlternatives(vpsc::Variables vs[]) +{ + SubConstraintAlternatives alternatives; + + ClusterShapeOffsets *info = static_cast<ClusterShapeOffsets *> + (_subConstraintInfo[_currSubConstraintIndex]); + + assertValidVariableIndex(vs[_primaryDim], info->varIndex); + if (info->boundarySide == BelowBoundary) + { + // Constrain the objects with negative offsets to be + // to the left of the boundary. + vpsc::Constraint constraint = vpsc::Constraint( + vs[info->dim][info->varIndex], vs[info->dim][info->boundaryVar], + info->offset); + alternatives.push_back(SubConstraint(info->dim, constraint)); + } + else + { + // Constrain the objects with positive offsets to be + // to the right of the boundary. + vpsc::Constraint constraint = vpsc::Constraint( + vs[info->dim][info->boundaryVar], vs[info->dim][info->varIndex], + info->offset); + alternatives.push_back(SubConstraint(info->dim, constraint)); + } + + //fprintf(stderr, "===== BOUNDARYLINE ALTERNATIVES -======\n"); + return alternatives; +} + + +void ClusterContainmentConstraints::generateSeparationConstraints( + const vpsc::Dim dim, vpsc::Variables& vs, vpsc::Constraints& cs, + std::vector<vpsc::Rectangle*>& bbs) +{ + COLA_UNUSED(bbs); + for (SubConstraintInfoList::iterator o = _subConstraintInfo.begin(); + o != _subConstraintInfo.end(); ++o) + { + ClusterShapeOffsets *info = static_cast<ClusterShapeOffsets *> (*o); + + if (info->dim != dim) + { + continue; + } + + vpsc::Constraint *constraint = nullptr; + if (info->boundarySide == BelowBoundary) + { + // Constrain the objects with negative offsets to be + // to the left of the boundary. + constraint = new vpsc::Constraint(vs[info->varIndex], + vs[info->boundaryVar], info->offset); + } + else + { + // Constrain the objects with positive offsets to be + // to the right of the boundary. + constraint = new vpsc::Constraint(vs[info->boundaryVar], + vs[info->varIndex], info->offset); + } + constraint->creator = this; + cs.push_back(constraint); + } +} + + +} // namespace cola + |