public MapTransform()
{
_circumference = 0.0;
_rotationMatrix = new RotationMatrix();
_rotationMatrix.MakeIdentity();
_originX = 0;
_originY = 0;
_mapHeight = 0;
_mapWidth = 0;
_canvasHeight = 0;
_canvasWidth = 0;
}
/// <summary>
/// Sets up a rotation of the map from (0 Lat, 0 Lon, true north orientation) to the desired
/// location and orientation. To rotate to a point on the globe with true north orientation
/// the passed parameters would be SetRotation(0,lat,lon)
/// </summary>
/// <param name="xRotateDegrees">Orienation angle in degrees (from true north)</param>
/// <param name="yRotateDegrees">Latitude angle in degrees</param>
/// <param name="zRotateDegrees">Longitude angle in degrees</param>
public void SetRotation(double xRotateDegrees, double yRotateDegrees, double zRotateDegrees)
{
RotationMatrix xMatrix = new RotationMatrix();
RotationMatrix yMatrix = new RotationMatrix();
RotationMatrix zMatrix = new RotationMatrix();
xMatrix.MakeRotateX(Utilities.ToRadians(xRotateDegrees));
// we need to reverse the orientation rotation
xMatrix.matrix = Matrix3.Transpose(xMatrix.matrix);
yMatrix.MakeRotateY(Utilities.ToRadians(yRotateDegrees));
zMatrix.MakeRotateZ(Utilities.ToRadians(zRotateDegrees));
_rotationMatrix.matrix = (xMatrix.matrix * yMatrix.matrix * zMatrix.matrix);
}
