/// <summary>
/// Transform a two dimensionnal array of polygon arrays of model coordinates into a two dimensionnal array of polygon arrays of screen coordinates.
/// </summary>
/// <param name="polygons">Two dimensionnal array of polygon arrays of model coordinates</param>
/// <returns>Two dimensionnal array of polygon array of screen coordinates</returns>
public PolygonArray[,] ModelToScreen(PolygonArray[,] polygons)
{
PolygonArray[,] screenCoords = new PolygonArray[polygons.GetLength(0), polygons.GetLength(1)];
int len = polygons.Length;
Matrix4d modelMatrix = getModelViewAsMatrix4d();
Matrix4d projectionMatrix = getProjectionAsMatrix4d();
double[] viewport = getViewPortAsDouble();
Vector4d screenCoord = default(Vector4d);
for (int i = 0; i <= polygons.GetLength(0) - 1; i++)
{
for (int j = 0; j <= polygons.GetLength(1) - 1; j++)
{
double[] x = new double[len];
double[] y = new double[len];
double[] z = new double[len];
PolygonArray polygon = polygons[i, j];
for (int k = 0; k <= polygon.Length - 1; k++)
{
if (!Glut.Glut.Project(new Vector4d(polygon.X[k], polygon.Y[k], polygon.Z[k], 0), modelMatrix, projectionMatrix, viewport, ref screenCoord))
{
FailedProjection("Could not retrieve model coordinates in screen for point #" + k + " of polygon (" + i + "," + j + ").");
}
x[k] = screenCoord.X;
y[k] = screenCoord.Y;
z[k] = screenCoord.Z;
}
screenCoords[i, j] = new PolygonArray(x, y, z);
}
}
return(screenCoords);
}
/// <summary>
/// Transform a polygon array of model coordinates into a polygon array of screen coordinates.
/// </summary>
/// <param name="polygon">Polygon array of model coordinates</param>
/// <returns>Polygon array of screen coordinates</returns>
public PolygonArray ModelToScreen(PolygonArray polygon)
{
List <Coord3d> screenCoords = new List <Coord3d>();
int len = polygon.Length;
double[] x = new double[len];
double[] y = new double[len];
double[] z = new double[len];
Matrix4d modelMatrix = getModelViewAsMatrix4d();
Matrix4d projectionMatrix = getProjectionAsMatrix4d();
double[] viewport = getViewPortAsDouble();
Vector4d screenCoord = default(Vector4d);
for (int i = 0; i <= len - 1; i++)
{
if (!Glut.Glut.Project(new Vector4d(polygon.X[i], polygon.Y[i], polygon.Z[i], 0), modelMatrix, projectionMatrix, viewport, ref screenCoord))
{
FailedProjection("Could not retrieve model coordinates in screen for point #" + i + ".");
}
x[i] = screenCoord.X;
y[i] = screenCoord.Y;
z[i] = screenCoord.Z;
}
return(new PolygonArray(x, y, z));
}
