Layout for Roassal using GraphViz
# GraphViz layout Layout for [Roassal](http://agilevisualization.com/) using [GraphViz](http://www.graphviz.org/). ## Example ```st someClasses := RTAbstractLine withAllSubclasses. allMethodCategories := (someClasses flatCollect: #protocols) asSet asArray. b := RTUMLClassBuilder new. b lineShape line. b lineShape color: Color black. n := RTMultiLinearColorForIdentity new objects: allMethodCategories. b methodShape color: [ :m | n rtValue: m protocol ]. b methodsNames: [ :cls | cls rtmethods sortedAs: #protocol ]. b addObjects: someClasses. b layout graphVizDot. b. ```  See class-side of `RTGraphVizLayout` for more examples. ## Docs ```st RTGraphVizLayout new timeout: aNumberOfSeconds; orthogonalLines; on: elements directed: directedEdges undirected: undirectedEdges ``` * `timeout` - large and complex graphs may take dot long time to process; you can cap it (default 10 seconds) * `orthogonalLines` - draw lines orthogonally * `elements` - nodes that should be positioned; their size will be fixed (dot won't change their size) * `directedEdges` - edges that should adhere to the same dot ordering direction (e.g.: top->bottom) * `undirectedEdges` - edges whose direction is not relevant