/// <summary>
/// This finds the best point by converting neuron positions/values into a hilly terrain, and taking a contour plot.
/// The middle of the biggest polygon is the chosen point.
/// </summary>
private void Update_Contour()
{
const double CONTOURHEIGHT = .6667d;
#region Set heights
double maxHeight = 0;
for (int cntr = 0; cntr < _neurons.Length; cntr++)
{
_terrainPoints[cntr].Z = _neurons[cntr].Value * 100;
if (_terrainPoints[cntr].Z > maxHeight)
{
maxHeight = _terrainPoints[cntr].Z;
}
}
for (int cntr = 0; cntr < _terrainTriangles.Length; cntr++)
{
_terrainTriangles[cntr].PointsChanged();
}
double height = maxHeight * CONTOURHEIGHT;
#endregion
Triangle plane = new Triangle(new Point3D(-1, 0, height), new Point3D(1, 0, height), new Point3D(0, 1, height)); // normal needs to point up
// Get the contour polygons
var polys = Math3D.GetIntersection_Mesh_Plane(_terrainTriangles, plane);
if (polys == null || polys.Length == 0)
{
// Nothing, don't move
_mousePlate.CurrentPoint2D = new Point(0, 0);
return;
}
else if (polys.Length == 1)
{
// Just one polygon, no need to take the expense of calculating volume
_mousePlate.CurrentPoint2D = Math3D.GetCenter(polys[0].Polygon3D).ToPoint2D();
return;
}
// Find the polygon with the highest volume
var topPoly = polys.
Select(o => new { Poly = o, Volume = o.GetVolumeAbove() }).
OrderByDescending(o => o.Volume).
First();
// Go to the center of this polygon
_mousePlate.CurrentPoint2D = Math3D.GetCenter(topPoly.Poly.Polygon3D).ToPoint2D();
}
