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public static ComputeVoronoiGraph ( VoronoiCell>.Dictionary |
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| cells | VoronoiCell>.Dictionary | |
| return | ||
/// <summary>
/// Visualization of 2D Voronoi map.
/// </summary>
/// <param name="weight">Weight of result image.</param>
/// <param name="height">Height of result image.</param>
/// <param name="Datapoints">Array of data points.</param>
/// <returns>Result bitmap.</returns>
public static Bitmap GetVoronoyMap(int weight, int height, IEnumerable Datapoints)
{
Bitmap bmp = new Bitmap(weight, height);
VoronoiGraph graph = Fortune.ComputeVoronoiGraph(Datapoints);
Graphics g = Graphics.FromImage(bmp);
foreach (object o in graph.Vertizes)
{
Vector3 v = (Vector3)o;
g.DrawEllipse(Pens.Black, (int)v[0] - 2, (int)v[1] - 2, 4, 4);
}
foreach (object o in Datapoints)
{
Vector3 v = (Vector3)o;
g.DrawEllipse(Pens.Red, (int)v[0] - 1, (int)v[1] - 1, 2, 2);
}
foreach (object o in graph.Edges)
{
VoronoiEdge edge = (VoronoiEdge)o;
try
{
g.DrawLine(Pens.Brown, (int)edge.VVertexA[0], (int)edge.VVertexA[1], (int)edge.VVertexB[0], (int)edge.VVertexB[1]);
}
catch { }
}
return(bmp);
}
/// <summary>
/// Visualization of Delaunay Triangulation
/// </summary>
/// <param name="weight">Weight of result image.</param>
/// <param name="height">Height of result image.</param>
/// <param name="Datapoints">Result bitmap.</param>
/// <returns></returns>
public static List <Triangle> GetDelaunayTriangulation(IEnumerable Datapoints)
{
System.Collections.Generic.List <Triangle> list = new System.Collections.Generic.List <Triangle>();
VoronoiGraph voronoiGraph = Fortune.ComputeVoronoiGraph(Datapoints);
//Graphics g = Graphics.FromImage(bmp);
List <Triangle> triangles = new List <Triangle>();
for (int i = voronoiGraph.Edges.Count - 1; i >= 0; i--)
{
VoronoiEdge edge1 = voronoiGraph.Edges[i];
for (int j = 0; j < i; j++)
{
VoronoiEdge edge2 = voronoiGraph.Edges[j];
//if (edge1.LeftData.Index == edge2.LeftData.Index)
//{
// triangles.Add(new Triangle(edge1.LeftData.Index, edge1.RightData.Index, edge2.RightData.Index));
//}
//if (edge1.RightData.Index == edge2.RightData.Index)
//{
// triangles.Add(new Triangle(edge1.LeftData.Index, edge1.RightData.Index, edge2.LeftData.Index));
//}
//if (edge1.RightData.Index == edge2.LeftData.Index)
//{
// triangles.Add(new Triangle(edge1.LeftData.Index, edge1.RightData.Index, edge2.RightData.Index));
//}
//if (edge1.LeftData.Index == edge2.RightData.Index)
//{
// triangles.Add(new Triangle(edge1.LeftData.Index, edge1.RightData.Index, edge2.LeftData.Index));
//}
}
//if ((edge.LeftData[0] == v[0]) & (edge.LeftData[1] == v[1]))
//{
// g.DrawLine(Pens.Black, (int)edge.LeftData[0], (int)edge.LeftData[1], (int)edge.RightData[0], (int)edge.RightData[1]);
//}
}
////Graphics g = Graphics.FromImage(bmp);
//foreach (object o in Datapoints)
//{
// Vector3 v = (Vector3)o;
// //g.DrawEllipse(Pens.Red, (int)v[0] - 1, (int)v[1] - 1, 2, 2);
// foreach (object obj in voronoiGraph.Edges)
// {
// VoronoiEdge edge = (VoronoiEdge)obj;
// if ((edge.LeftData[0] == v[0]) & (edge.LeftData[1] == v[1]))
// {
// g.DrawLine(Pens.Black, (int)edge.LeftData[0], (int)edge.LeftData[1], (int)edge.RightData[0], (int)edge.RightData[1]);
// }
// }
//}
return(triangles);
}
