A set of tools for graph layout and viewing
The simplest way to start with MSAGL in C# is to open GraphLayout.sln in Visual Studio 2013, and have a look at Samples there.
MSAGL is a .NET tool for graph layout and viewing. It was developed in Microsoft by Lev Nachmanson, Sergey Pupyrev, Tim Dwyer, Ted Hart, and Roman Prutkin.
The package contains the following:
- Layout engine (Microsoft.MSAGL.dll) - The core layout functionality. This component can be used directly in cases when visualization is handled by a tool other than MSAGL.
- Drawing module (Microsoft.MSAGL.Drawing.dll) - The Definitions of different drawing attributes like colors, line styles, etc. It also contains definitions of a node class, an edge class, and a graph class. By using these classes a user can create a graph object and use it later for layout, and rendering.
- Viewer control (Microsoft.MSAGL.GraphViewerGDIGraph.dll) - The viewer control, and some other rendering functionality.
Some important features of the viewer are:
- Pan and Zoom of the graph.
- Forward and Backward navigation.
- Ability to configure tooltips and highlighting of graph entities.
- Ability to search for and focus on entities of the graph.
#Code Samples The code snippet demonstrates the basic usage of the viewer. It uses the C# language.
##The Viewer sample
Drawing of the graph from the sampleDrawing of the graph from the sample
usingSystem;usingSystem.Collections.Generic;usingSystem.Windows.Forms;classViewerSample{publicstaticvoidMain(){//create a form System.Windows.Forms.Formform=newSystem.Windows.Forms.Form();//create a viewer object Microsoft.Msagl.GraphViewerGdi.GViewerviewer=newMicrosoft.Msagl.GraphViewerGdi.GViewer();//create a graph object Microsoft.Msagl.Drawing.Graphgraph=newMicrosoft.Msagl.Drawing.Graph("graph");//create the graph content graph.AddEdge("A","B");graph.AddEdge("B","C");graph.AddEdge("A","C").Attr.Color=Microsoft.Msagl.Drawing.Color.Green;graph.FindNode("A").Attr.FillColor=Microsoft.Msagl.Drawing.Color.Magenta;graph.FindNode("B").Attr.FillColor=Microsoft.Msagl.Drawing.Color.MistyRose;Microsoft.Msagl.Drawing.Nodec=graph.FindNode("C");c.Attr.FillColor=Microsoft.Msagl.Drawing.Color.PaleGreen;c.Attr.Shape=Microsoft.Msagl.Drawing.Shape.Diamond;//bind the graph to the viewer viewer.Graph=graph;//associate the viewer with the form form.SuspendLayout();viewer.Dock=System.Windows.Forms.DockStyle.Fill;form.Controls.Add(viewer);form.ResumeLayout();//show the form form.ShowDialog();}}More code samples can be found here…
#GraphMaps This functionality allows viewing a large graph in the online map fashion. Here is a video demoing GraphMaps. To see the system in action please open Lg.sln, build it, and run TestGraphMaps. The configuration Release/x64 needs to be used to load a large graph. The graph from the video can be found in GraphLayout/graphs/composers.zip. Please load composers.msagl to avoid the preprocessing step. If composers.dot is loaded then composers.msagl and the tiles directory composers.msagl_tiles will be regenerated. GraphMaps ideas, design, and the mathematics are described in a paper.
#Layouts Created by MSAGL
This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.