public VoronoiGrid(GridCommons pGrid,
int[][] logialToGeometricalCellMap,
VoronoiNodes nodes,
VoronoiBoundary boundary)
: base(pGrid, logialToGeometricalCellMap)
{
this.nodes = nodes;
this.boundary = boundary;
}
//creates random nodes in bounding box of PolygonBoundary,
//first node coincides with first corner of polygon boundary
static VoronoiNodes GetVoronoiNodesIn(VoronoiBoundary boundary, int amount)
{
MultidimensionalArray nodePositions = RandomVoronoiNodesInBoundingBox(boundary.BoundingBox, amount);
nodePositions.SetRowPt(0, boundary.Polygon[0] + new Vector(0.01, -0.01));
VoronoiNodes nodes = new VoronoiNodes(nodePositions);
return(nodes);
}
/// <summary>
/// Creates a voronoi mesh inside a polygon.
/// </summary>
/// <param name="boundary">
/// Specifies polygonal boundary, edgetags, bounding box, ...
/// </param>
/// <param name="noOfLyyodsIter">
/// Number of smoothing iterations.
/// </param>
/// <param name="noOfNodeSeed">
/// Number of random nodes that are placed in the bounding box of the PolygonBoundary.
/// </param>
/// <returns></returns>
public static VoronoiGrid Polygonal(
VoronoiBoundary boundary,
int noOfLyyodsIter,
int noOfNodeSeed)
{
if (boundary.BoundingBox == null)
{
boundary.BoundingBox = BoundingBox(boundary.Polygon);
}
VoronoiMesher.Settings mesherSettings = new VoronoiMesher.Settings
{
Boundary = boundary,
NumberOfLloydIterations = noOfLyyodsIter,
};
VoronoiNodes nodes = GetVoronoiNodesIn(mesherSettings.Boundary, noOfNodeSeed);
VoronoiMesher mesher = new VoronoiMesher(mesherSettings);
return(mesher.CreateGrid(nodes, 0));
}
public static VoronoiGrid Polygonal(
MultidimensionalArray nodePositions,
VoronoiBoundary boundary,
int noOfLyyodsIter,
int firstCellNodeIndice)
{
VoronoiNodes nodes = new VoronoiNodes(nodePositions);
if (boundary.BoundingBox == null)
{
boundary.BoundingBox = BoundingBox(boundary.Polygon);
}
VoronoiMesher.Settings settings = new VoronoiMesher.Settings
{
Boundary = boundary,
NumberOfLloydIterations = noOfLyyodsIter,
};
VoronoiMesher mesher = new VoronoiMesher(settings);
return(mesher.CreateGrid(nodes, firstCellNodeIndice));
}
