| public AddRegion ( double x, double y, int id ) : void | ||
| x | double | X coordinate of the hole. |
| y | double | Y coordinate of the hole. |
| id | int | The region id. |
| return | void | |
/// <summary>
/// Rebuild the input geometry.
/// </summary>
private InputGeometry Rebuild()
{
InputGeometry geometry = new InputGeometry(mesh.vertices.Count);
foreach (var vertex in mesh.vertices.Values)
{
geometry.AddPoint(vertex.x, vertex.y, vertex.mark);
}
foreach (var segment in mesh.subsegs.Values)
{
geometry.AddSegment(segment.P0, segment.P1, segment.Boundary);
}
foreach (var hole in mesh.holes)
{
geometry.AddHole(hole.x, hole.y);
}
foreach (var region in mesh.regions)
{
geometry.AddRegion(region.point.x, region.point.y, region.id);
}
return geometry;
}
public override InputGeometry Generate(double param0, double param1, double param2)
{
// Number of points on the outer circle
int n = GetParamValueInt(0, param0);
int count, npoints;
double radius = GetParamValueInt(1, param1);
// Step size on the outer circle
double h = 2 * Math.PI * radius / n;
// Current radius and step size
double r, dphi;
InputGeometry input = new InputGeometry(n + 1);
// Inner cirlce (radius = 1)
r = 1;
npoints = (int)(2 * Math.PI * r / h);
dphi = 2 * Math.PI / npoints;
for (int i = 0; i < npoints; i++)
{
input.AddPoint(r * Math.Cos(i * dphi), r * Math.Sin(i * dphi), 1);
input.AddSegment(i, (i + 1) % npoints, 1);
}
count = input.Count;
// Center cirlce
r = (radius + 1) / 2.0;
npoints = (int)(2 * Math.PI * r / h);
dphi = 2 * Math.PI / npoints;
for (int i = 0; i < npoints; i++)
{
input.AddPoint(r * Math.Cos(i * dphi), r * Math.Sin(i * dphi), 2);
input.AddSegment(count + i, count + (i + 1) % npoints, 2);
}
count = input.Count;
// Outer cirlce
r = radius;
npoints = (int)(2 * Math.PI * r / h);
dphi = 2 * Math.PI / npoints;
for (int i = 0; i < npoints; i++)
{
input.AddPoint(r * Math.Cos(i * dphi), r * Math.Sin(i * dphi), 3);
input.AddSegment(count + i, count + (i + 1) % npoints, 3);
}
input.AddHole(0, 0);
// Regions: |++++++|++++++|---|
// r 1 0
input.AddRegion((r + 3.0) / 4.0, 0, 1);
input.AddRegion((3 * r + 1.0) / 4.0, 0, 2);
return input;
}
