/// <summary>
/// Test intersections in 3D on a big dataset.
/// </summary>
public static void TestIntersectExampleData()
{
var parser = new Parser();
var generators = new List <Vertex>();
using (var streamReader = new StreamReader("Data/exampleVoronoi.txt"))
{
int i = 0;
string line;
while ((line = streamReader.ReadLine()) != null)
{
var vertex = parser.ParseVertex(line);
vertex.Index = i;
generators.Add(vertex);
i++;
}
}
var reader = new TriangulationReader();
var tetrahedralization = reader.Read("Data/exampleTetra.dat");
for (int i = 0; i < tetrahedralization.Indices.Count; i++)
{
var indices = tetrahedralization.Indices[i].Indices;
for (int j = 0; j < indices.Length; j++)
{
indices[j] = indices[j] - 1;
}
}
//var boundingBox = CreateBoundingBox3D(tetrahedralization.Vertices);
//var voronoiData = new VolumeData3D();
//voronoiData.FromVoronoi(generators);
var tetrahedralizationData = new VolumeData3D();
tetrahedralizationData.FromTriangulation(tetrahedralization.Vertices, tetrahedralization.Indices);
//var bitmap = new System.Drawing.Bitmap(800, 800);
//VolumeVisualisator.Visualise3D(bitmap, 0.4, voronoiData, boundingBox);
//bitmap.Save("export000.png");
//bitmap = new System.Drawing.Bitmap(800, 800);
//VolumeVisualisator.Visualise3D(bitmap, 0.4, tetrahedralizationData, boundingBox);
//bitmap.Save("example.png");
var volumeIntersection = new VolumeIntersection3D(new BruteForceHalfSpaceRemoval3D());
var volumeData = volumeIntersection.Intersect(tetrahedralization.Vertices, tetrahedralization.Indices, generators);
var writer = new VolumeData3DWriter(',');
writer.Write("exampleIntersection.txt", volumeData);
//bitmap = new System.Drawing.Bitmap(800, 800);
//VolumeVisualisator.Visualise3D(bitmap, 0.4, volumeData, boundingBox);
//bitmap.Save("intersectExample.png");
}
/// <summary>
/// Test intersection in 3D.
/// </summary>
public static void TestIntersect3D()
{
var vertices = new List <Vertex>()
{
new Vertex(0, 0, 0),
new Vertex(1, 0, 0),
new Vertex(0, 1, 0),
new Vertex(0, 0, 1)
};
var triangles = new List <Triangle>()
{
new Triangle(0, 1, 2, 3)
};
var generators = new List <Vertex>()
{
new Vertex(1, 0, 0)
{
Index = 0
},
new Vertex(0, 0, 0)
{
Index = 1
},
new Vertex(-1, 0, 0)
{
Index = 2
},
new Vertex(0, 1, 0)
{
Index = 3
},
new Vertex(0, -1, 0)
{
Index = 4
},
new Vertex(0, 0, 1)
{
Index = 5
},
new Vertex(0, 0, -1)
{
Index = 6
}
};
var volumeData = new VolumeIntersection3D(new BruteForceHalfSpaceRemoval3D()).Intersect(vertices, triangles, generators);
}
/// <summary>
/// Test intersection in 3D on a small dataset.
/// </summary>
public static void TestIntersectSmallData()
{
var reader = new TriangulationReader();
var tetrahedralization = reader.Read("Data/smallTetra.dat");
Random rd = new Random();
var generators = new List <Vertex>();
for (int i = 0; i < 5; i++)
{
generators.Add(new Vertex(rd.NextDouble() * 0.6 + 0.1, rd.NextDouble() * 0.9, rd.NextDouble() * 0.7 + 0.2)
{
Index = i
});
}
var boundingBox = CreateBoundingBox3D(tetrahedralization.Vertices);
var voronoiData = new VolumeData3D();
voronoiData.FromVoronoi(generators);
var tetrahedralizationData = new VolumeData3D();
tetrahedralizationData.FromTriangulation(tetrahedralization.Vertices, tetrahedralization.Indices);
var bitmap = new System.Drawing.Bitmap(800, 800);
VolumeVisualisator.Visualise3D(bitmap, 0.4, voronoiData, boundingBox);
bitmap.Save("smallVoronoi.png");
bitmap = new System.Drawing.Bitmap(800, 800);
VolumeVisualisator.Visualise3D(bitmap, 0.4, tetrahedralizationData, boundingBox);
bitmap.Save("smallTetra.png");
var volumeData = new VolumeIntersection3D(new BruteForceHalfSpaceRemoval3D()).Intersect(tetrahedralization.Vertices, tetrahedralization.Indices, generators);
bitmap = new System.Drawing.Bitmap(800, 800);
VolumeVisualisator.Visualise3D(bitmap, 0.4, volumeData, boundingBox);
bitmap.Save("intersectSmallData.png");
}
