// Use this for initialization
void Start()
{
// Start the child process.
Process p = new Process();
// Redirect the output stream of the child process.
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.FileName = @"C:\Program Files (x86)\Graphviz2.38\bin\dot.exe";
//p.StartInfo.FileName = @"C:\Program Files (x86)\Graphviz2.38\bin\neato.exe";
//p.StartInfo.FileName = @"C:\Program Files (x86)\Graphviz2.38\bin\fdp.exe";
p.StartInfo.Arguments = @"-Tplain H:\unity_projects\graphvizinunity\Assets\graph.gv";
p.Start();
// Do not wait for the child process to exit before
// reading to the end of its redirected stream.
//p.WaitForExit();
// Read the output stream first and then wait.
string output = p.StandardOutput.ReadToEnd();
p.WaitForExit();
//UnityEngine.Debug.Log("output: " + output);
Parser parser = new Parser(new UnityLogger());
GVGraph graph = parser.ParseGraphSource(output);
DrawGraph(graph);
}
private void DrawGraph(GVGraph graph)
{
// Graph outline
{
GameObject graphCubeGO = Instantiate(Resources.Load <GameObject>("graphCube"));
graphCubeGO.transform.localScale = new Vector3(graph.width * 2, graph.height * 2, 4f);
graphCubeGO.transform.position = new Vector3(0, 0, 0f);
}
// Nodes
for (int i = 0; i < graph.nodes.Length; i++)
{
GameObject graphNodeGO = Instantiate(Resources.Load <GameObject>("graphNode"));
graphNodeGO.transform.localScale = new Vector3(graph.nodes[i].xsize, graph.nodes[i].ysize, 0.5f);
graphNodeGO.transform.position = new Vector3(graph.nodes[i].x, graph.nodes[i].y, 0f);
graphNodeGO.GetComponentInChildren <Text>().text = graph.nodes[i].name + "|" + graph.nodes[i].label;
}
// Edges
for (int i = 0; i < graph.edges.Length; i++)
{
GameObject lineGO = Instantiate(Resources.Load <GameObject>("line"));
LineRenderer lineRenderer = lineGO.GetComponent <LineRenderer>();
Vector3[] positions = new Vector3[graph.edges[i].pointCount];
for (int j = 0; j < positions.Length; j++)
{
positions[j].x = graph.edges[i].points[j].x;
positions[j].y = graph.edges[i].points[j].y;
}
Color lineColor;
switch (graph.edges[i].color)
{
case "red":
lineColor = Color.red;
break;
case "green":
lineColor = Color.green;
break;
case "blue":
lineColor = Color.blue;
break;
default:
lineColor = Color.black;
break;
}
lineRenderer.SetWidth(0.1f, 0.1f);
lineRenderer.SetColors(lineColor, lineColor);
lineRenderer.SetVertexCount(positions.Length);
lineRenderer.SetPositions(positions);
}
}
public void ParseGraphSourceTest()
{
var fileStream = new FileStream("graph_plain_01", FileMode.Open);
StreamReader strmRdr = new StreamReader(fileStream, Encoding.UTF8);
string source = strmRdr.ReadToEnd();
Parser parser = new Parser(new TestLogger());
GVGraph graph = parser.ParseGraphSource(source);
Assert.IsNotNull(graph);
Assert.AreEqual(1f, graph.scalefactor);
Assert.AreEqual(0.75f, graph.width);
Assert.AreEqual(1.5f, graph.height);
Assert.AreEqual(2, graph.nodes.Length);
Assert.AreEqual("a", graph.nodes[0].name);
Assert.AreEqual(0.375f, graph.nodes[0].x);
Assert.AreEqual(1.25f, graph.nodes[0].y);
Assert.AreEqual(0.75f, graph.nodes[0].xsize);
Assert.AreEqual(0.5f, graph.nodes[0].ysize);
Assert.AreEqual("a", graph.nodes[0].label);
Assert.AreEqual("solid", graph.nodes[0].style);
Assert.AreEqual("ellipse", graph.nodes[0].shape);
Assert.AreEqual("black", graph.nodes[0].color);
Assert.AreEqual("lightgrey", graph.nodes[0].fillcolor);
Assert.AreEqual("b", graph.nodes[1].name);
Assert.AreEqual(0.375f, graph.nodes[1].x);
Assert.AreEqual(0.25f, graph.nodes[1].y);
Assert.AreEqual(0.75f, graph.nodes[1].xsize);
Assert.AreEqual(0.5f, graph.nodes[1].ysize);
Assert.AreEqual("b", graph.nodes[1].label);
Assert.AreEqual("solid", graph.nodes[1].style);
Assert.AreEqual("ellipse", graph.nodes[1].shape);
Assert.AreEqual("black", graph.nodes[1].color);
Assert.AreEqual("lightgrey", graph.nodes[1].fillcolor);
Assert.AreEqual(1, graph.edges.Length);
Assert.AreEqual("a", graph.edges[0].tailNodeName);
Assert.AreEqual("b", graph.edges[0].headNodeName);
Assert.AreEqual(4, graph.edges[0].pointCount);
Assert.AreEqual(4, graph.edges[0].points.Length);
Assert.AreEqual(new Vector2(0.375f, 0.99579f), graph.edges[0].points[0]);
Assert.AreEqual(new Vector2(0.375f, 0.84509f), graph.edges[0].points[1]);
Assert.AreEqual(new Vector2(0.375f, 0.65162f), graph.edges[0].points[2]);
Assert.AreEqual(new Vector2(0.375f, 0.50145f), graph.edges[0].points[3]);
Assert.AreEqual(null, graph.edges[0].label);
Assert.AreEqual(Vector2.zero, graph.edges[0].labelPosition);
Assert.AreEqual("solid", graph.edges[0].style);
Assert.AreEqual("black", graph.edges[0].color);
}
GVGraph ParseGraphLine(string graphString)
{
GVGraph graph = new GVGraph();
string[] strings = graphString.Split(' ');
Debug.Assert(strings.Length == 4);
Debug.Assert(strings[0] == "graph");
graph.scalefactor = float.Parse(strings[1]);
graph.width = float.Parse(strings[2]);
graph.height = float.Parse(strings[3]);
return(graph);
}
