/// <summary>
/// XML Load function
/// </summary>
/// <param name="camRoot">Root element of camera tag</param>
/// <returns>Fully constructed PinholeCamera</returns>
public static PinholeCamera LoadPinholeCamera(XmlElement camRoot)
{
PinholeCamera toReturn = new PinholeCamera();
XmlNode node_vdp = camRoot.SelectSingleNode("vdp");
if (node_vdp != null)
{
string str_vdp = ((XmlText)node_vdp.FirstChild).Data;
float vdp = (float)Convert.ToSingle(str_vdp);
toReturn.ViewPlaneDistance = vdp;
}
return toReturn;
}
/// <summary>
/// Load function for XML file
/// </summary>
/// <param name="camRoot">Root element of camera tag</param>
/// <returns>A fully constructed Camera</returns>
public static Camera LoadCamera(XmlElement camRoot)
{
string cam_type = camRoot.GetAttribute("type");
Camera toReturn = new PinholeCamera();
//If no camera type is defined, then return a default pinhole camera.
if (!cam_type.Equals(""))
{
//Load subtype specific parameters in their own methods
if (cam_type.Equals("pinhole"))
{
toReturn = PinholeCamera.LoadPinholeCamera(camRoot);
}
else if(cam_type.Equals("thinlens"))
{
toReturn = ThinLensCamera.LoadThinLensCamera(camRoot);
}
else
{
Console.WriteLine("Unknown camera type: " + cam_type);
}
XmlNode node_zoom = camRoot.SelectSingleNode("zoom");
if (node_zoom != null)
{
string str_zoom = ((XmlText)node_zoom.FirstChild).Data;
float zoom = (float)Convert.ToSingle(str_zoom);
toReturn.Zoom = zoom;
}
//Load common attributes afterwards.
XmlNode node_point = camRoot.SelectSingleNode("point");
if (node_point != null)
{
string str_point = ((XmlText)node_point.FirstChild).Data;
Point3D point = Point3D.FromCsv(str_point);
//if (point != null)
//{
toReturn.Eye = point;
//}
}
XmlNode node_lookat = camRoot.SelectSingleNode("lookat");
if (node_lookat != null)
{
string str_lookat = ((XmlText)node_lookat.FirstChild).Data;
Point3D lookat = Point3D.FromCsv(str_lookat);
//if (lookat != null)
//{
toReturn.LookAt = lookat;
//}
}
XmlNode node_exp = camRoot.SelectSingleNode("exposure");
if (node_exp != null)
{
string str_exp = ((XmlText)node_exp.FirstChild).Data;
float exposure = (float)Convert.ToSingle(str_exp);
toReturn.Exposure = exposure;
}
toReturn.compute_uvw();
return toReturn;
}
else
{
Console.WriteLine("Camera type for camera " + camRoot.GetAttribute("id") + " not defined.");
return toReturn;
}
}
