/// <summary>
/// Builds shaded relief.
/// </summary>
/// <param name="triangles">An object that enumerates triangles defining surface. All triangle coordinates should be instances of the MapAround.Geometry.Coordinate3D.</param>
/// <param name="lightX">An X component of the light vector</param>
/// <param name="lightY">A Y component of the light vector</param>
/// <param name="lightZ">A Z component of the light vector</param>
/// <param name="zFactor">A value at which to multiply z-values for luminosity calculation</param>
/// <param name="luminosityLevelNumber">A number of resoluted luminosity levels</param>
/// <returns>An array containing lightened polygons</returns>
public LightenedPolygon[] BuildShadedRelief(IEnumerable <Triangle> triangles,
double lightX,
double lightY,
double lightZ,
double zFactor,
int luminosityLevelNumber)
{
LightenedPolygon[] result = new LightenedPolygon[luminosityLevelNumber];
List <double> luminosity = new List <double>();
foreach (Triangle t in triangles)
{
luminosity.Add(GetLuminosity(t, lightX, lightY, lightZ, zFactor));
}
double minL = luminosity.Min();
double maxL = luminosity.Max();
List <Polygon>[] collectors = new List <Polygon> [luminosityLevelNumber];
int i = 0;
foreach (Triangle t in triangles)
{
int j = (int)((luminosity[i] - minL) / ((maxL - minL) / (double)luminosityLevelNumber));
if (j == collectors.Length)
{
j--;
}
if (collectors[j] == null)
{
collectors[j] = new List <Polygon>();
}
collectors[j].Add(new Polygon(new ICoordinate[] { t.Cell1.DataPoint, t.Cell2.DataPoint, t.Cell3.DataPoint }));
i++;
}
i = 0;
double luminosityRange = (maxL - minL) / (double)luminosityLevelNumber;
foreach (List <Polygon> collector in collectors)
{
result[i] = new LightenedPolygon(mergeTriangles(collector), minL + luminosityRange * i + luminosityRange * 0.5);
i++;
}
return(result);
}
/// <summary>
/// Builds shaded relief.
/// </summary>
/// <param name="triangles">An object that enumerates triangles defining surface. All triangle coordinates should be instances of the MapAround.Geometry.Coordinate3D.</param>
/// <param name="lightX">An X component of the light vector</param>
/// <param name="lightY">A Y component of the light vector</param>
/// <param name="lightZ">A Z component of the light vector</param>
/// <param name="zFactor">A value at which to multiply z-values for luminosity calculation</param>
/// <param name="luminosityLevelNumber">A number of resoluted luminosity levels</param>
/// <returns>An array containing lightened polygons</returns>
public LightenedPolygon[] BuildShadedRelief(IEnumerable<Triangle> triangles,
double lightX,
double lightY,
double lightZ,
double zFactor,
int luminosityLevelNumber)
{
LightenedPolygon[] result = new LightenedPolygon[luminosityLevelNumber];
List<double> luminosity = new List<double>();
foreach (Triangle t in triangles)
luminosity.Add(GetLuminosity(t, lightX, lightY, lightZ, zFactor));
double minL = luminosity.Min();
double maxL = luminosity.Max();
List<Polygon>[] collectors = new List<Polygon>[luminosityLevelNumber];
int i = 0;
foreach (Triangle t in triangles)
{
int j = (int)((luminosity[i] - minL) / ((maxL - minL) / (double)luminosityLevelNumber));
if (j == collectors.Length)
j--;
if (collectors[j] == null)
collectors[j] = new List<Polygon>();
collectors[j].Add(new Polygon(new ICoordinate[] { t.Cell1.DataPoint, t.Cell2.DataPoint, t.Cell3.DataPoint }));
i++;
}
i = 0;
double luminosityRange = (maxL - minL) / (double)luminosityLevelNumber;
foreach (List<Polygon> collector in collectors)
{
result[i] = new LightenedPolygon(mergeTriangles(collector), minL + luminosityRange * i + luminosityRange * 0.5);
i++;
}
return result;
}
