Create(IList <double[]> data, TriangulationComputationConfig config = null)
{
var points = data.Select(p => new DefaultVertex {
Position = p.ToArray()
}).ToList();
return(VoronoiMesh <DefaultVertex, DefaultTriangulationCell <DefaultVertex>, VoronoiEdge <DefaultVertex, DefaultTriangulationCell <DefaultVertex> > > .Create(points, config));
}
/// <summary>
/// Remove the upper faces from the hull.
/// Remove empty boundary cells if shifting was used.
/// </summary>
/// <param name="config"></param>
void PostProcessTriangulation(TriangulationComputationConfig config)
{
RemoveUpperFaces();
if (config.PointTranslationType == PointTranslationType.TranslateInternal)
{
RemoveEmptyBoundaryCells(config.ZeroCellVolumeTolerance);
}
}
/// <summary>
/// Create the voronoi mesh.
/// </summary>
/// <typeparam name="TVertex"></typeparam>
/// <typeparam name="TCell"></typeparam>
/// <param name="data"></param>
/// <param name="config">If null, default TriangulationComputationConfig is used.</param>
/// <returns></returns>
public static VoronoiMesh <TVertex, TCell, VoronoiEdge <TVertex, TCell> > Create <TVertex, TCell>(IList <TVertex> data, TriangulationComputationConfig config = null)
where TVertex : IVertex
where TCell : TriangulationCell <TVertex, TCell>, new()
{
return(VoronoiMesh <TVertex, TCell, VoronoiEdge <TVertex, TCell> > .Create(data, config));
}
/// <summary>
/// Create the voronoi mesh.
/// </summary>
/// <typeparam name="TVertex"></typeparam>
/// <param name="data"></param>
/// <param name="config">If null, default TriangulationComputationConfig is used.</param>
/// <returns></returns>
public static VoronoiMesh <TVertex, DefaultTriangulationCell <TVertex>, VoronoiEdge <TVertex, DefaultTriangulationCell <TVertex> > > Create <TVertex>(IList <TVertex> data, TriangulationComputationConfig config = null)
where TVertex : IVertex
{
return(VoronoiMesh <TVertex, DefaultTriangulationCell <TVertex>, VoronoiEdge <TVertex, DefaultTriangulationCell <TVertex> > > .Create(data, config));
}
/// <summary>
/// Creates the Delaunay triangulation of the input data.
/// </summary>
/// <param name="data"></param>
/// <param name="config">If null, default ConvexHullComputationConfig is used.</param>
/// <returns></returns>
public static DelaunayTriangulation <TVertex, TCell> Create(IList <TVertex> data, TriangulationComputationConfig config)
{
if (data == null)
{
throw new ArgumentNullException("data");
}
if (data.Count == 0)
{
return new DelaunayTriangulation <TVertex, TCell> {
Cells = new TCell[0]
}
}
;
config = config ?? new TriangulationComputationConfig();
var cells = ConvexHullInternal.GetDelaunayTriangulation <TVertex, TCell>(data, config);
return(new DelaunayTriangulation <TVertex, TCell> {
Cells = cells
});
}
public void GenerateMapData(int startZ, int rows)
{
InitGenerators();
//set scalling factors
scaleX = (float)WorldWidth / ((float)WidthSegments - 1);
scaleZ = (float)WorldHeight / ((float)HeightSegments - 1);
for (int z = startZ; z < rows; z++)
{
Vector3[] dataRow = new Vector3[WidthSegments];
float worldZ = z * scaleZ;
//build basic terrain data row
for (int x = 0; x < WidthSegments; x++)
{
float worldX = (x - WidthSegments / 2) * scaleX;
float worldY = (float)terrainScaledModule.GetValue(worldX * WorldScale, 0, worldZ * WorldScale) / WorldScale + 1.1f;
Vector3 vertex = new Vector3(worldX, worldY, worldZ);
dataRow[x] = vertex;
}
//carve river shape
CarveRiverChannel(dataRow, scaleX, worldZ);
//collect modified points and add to vertices array
for (int x = 0; x < WidthSegments; x++)
{
Vertices.Add(new Vertex { Position3D = dataRow[x], Id = vertexIndex++ });
}
//build heightmaps
//for (int x = 0; x < widthSegments; x++)
//{
// uvs.Add(new Vector2(x * scaleX / (float)widthSegments, z * scaleZ / (float)heightSegments));
//}
}
var config = new TriangulationComputationConfig();
Triangles = Triangulation.CreateDelaunay<Vertex, Triangle<Vertex>>(Vertices, config).Cells.ToList();
for (int i = Triangles.Count - 1; i >= 0; i--)
{
Triangles[i].ComputeNormal();
SetBiome(Triangles[i], biomesPerlin);
}
foreach (Triangle<Vertex> triangle in Triangles)
{
SplitTriangles(triangle);
}
}
/// <summary>
/// Creates the Delaunay triangulation of the input data.
/// </summary>
/// <typeparam name="TVertex"></typeparam>
/// <typeparam name="TFace"></typeparam>
/// <param name="data"></param>
/// <param name="config">If null, default TriangulationComputationConfig is used.</param>
/// <returns></returns>
public static ITriangulation <TVertex, TFace> CreateDelaunay <TVertex, TFace>(IList <TVertex> data, TriangulationComputationConfig config = null)
where TVertex : IVertex
where TFace : TriangulationCell <TVertex, TFace>, new()
{
return(DelaunayTriangulation <TVertex, TFace> .Create(data, config));
}
/// <summary>
/// Creates the Delaunay triangulation of the input data.
/// </summary>
/// <param name="data"></param>
/// <param name="config">If null, default TriangulationComputationConfig is used.</param>
/// <returns></returns>
public static ITriangulation <DefaultVertex, DefaultTriangulationCell <DefaultVertex> > CreateDelaunay(IList <double[]> data, TriangulationComputationConfig config = null)
{
var points = data.Select(p => new DefaultVertex {
Position = p.ToArray()
}).ToList();
return(DelaunayTriangulation <DefaultVertex, DefaultTriangulationCell <DefaultVertex> > .Create(points, config));
}
/// <summary>
/// Creates the Delaunay triangulation of the input data.
/// </summary>
/// <typeparam name="TVertex"></typeparam>
/// <param name="data"></param>
/// <param name="config">If null, default TriangulationComputationConfig is used.</param>
/// <returns></returns>
public static ITriangulation <TVertex, DefaultTriangulationCell <TVertex> > CreateDelaunay <TVertex>(IList <TVertex> data, TriangulationComputationConfig config = null)
where TVertex : IVertex
{
return(DelaunayTriangulation <TVertex, DefaultTriangulationCell <TVertex> > .Create(data, config));
}
/// <summary>
/// Computes the Delaunay triangulation.
/// </summary>
/// <typeparam name="TVertex"></typeparam>
/// <typeparam name="TCell"></typeparam>
/// <param name="data"></param>
/// <param name="config"></param>
/// <returns></returns>
internal static TCell[] GetDelaunayTriangulation <TVertex, TCell>(IList <TVertex> data, TriangulationComputationConfig config)
where TCell : TriangulationCell <TVertex, TCell>, new()
where TVertex : IVertex
{
config = config ?? new TriangulationComputationConfig();
var vertices = new IVertex[data.Count];
for (int i = 0; i < data.Count; i++)
{
vertices[i] = data[i];
}
ConvexHullInternal ch = new ConvexHullInternal(vertices, true, config);
ch.FindConvexHull();
ch.PostProcessTriangulation(config);
return(ch.GetConvexFaces <TVertex, TCell>());
}
/// <summary>
/// Use Delauney triangulation to retrieve the triangles for this mesh
/// </summary>
/// <returns></returns>
private Mesh ComputeMesh()
{
if (m_currentVertexList.Count < 3)
{
Debug.LogWarning("Not creating Zone (need >= 3 vertices)");
return null;
}
Mesh mesh = new Mesh();
// Drop the y-coordinate in order to triangulate in two dimensions.
// We don't require the ability to triangulate in 3+ dimensions, although the MIConvexHull lib is capable of doing so.
Vertex[] vertices = m_currentVertexList.ConvertAll(vert3 => new Vertex(vert3.x, vert3.z)).ToArray();
// Triangulate the mesh
var config = new TriangulationComputationConfig
{
PointTranslationType = PointTranslationType.TranslateInternal,
PlaneDistanceTolerance = 0.00001,
// the translation radius should be lower than PlaneDistanceTolerance / 2
PointTranslationGenerator = TriangulationComputationConfig.RandomShiftByRadius(0.000001, 0)
};
List<Vector3> meshVerts = new List<Vector3>();
List<int> indices = new List<int>();
try
{
VoronoiMesh<Vertex, Cell, VoronoiEdge<Vertex, Cell>> voronoiMesh;
voronoiMesh = VoronoiMesh.Create<Vertex, Cell>(vertices, config);
foreach (var cell in voronoiMesh.Vertices)
{
for (int vertNum = 0; vertNum < 3; vertNum++)
{
Vector3 vert = new Vector3((float)cell.Vertices[vertNum].Position[0], 0.0f, (float)cell.Vertices[vertNum].Position[1]);
int idx;
if (meshVerts.Contains(vert))
{
idx = meshVerts.IndexOf(vert);
}
else
{
meshVerts.Add(vert);
idx = meshVerts.Count - 1;
}
indices.Add(idx);
}
}
}
catch (Exception ex)
{
Debug.LogError(ex.Message);
}
mesh.vertices = meshVerts.ToArray();
mesh.triangles = indices.ToArray();
mesh.RecalculateBounds();
mesh.RecalculateNormals();
m_createdZone = true;
return mesh;
}
