public RealtimeWindow(string fileName)
{
InitializeComponent();
output = new RealtimeWindowOutput(640, 480, this);
XmlSceneReader reader = new XmlSceneReader();
scene = reader.Load(fileName, output);
}
private void AddLights(XmlNode rayManNode, Scene scene)
{
var lightNodes = rayManNode["Lights"];
foreach (XmlNode light in lightNodes.ChildNodes) {
var objectType = Assembly.GetExecutingAssembly().GetTypes().FirstOrDefault(t => t.Name == light.Name);
Point position = CreatePoint(light["Position"].InnerText);
var l = Activator.CreateInstance(objectType, new object[] { position }) as Light;
l.Colour = CreateColour(light["Colour"].InnerText);
;
scene.AddLight(l);
}
}
/// <summary>
/// Loads the XML scene document from the specified URL.
/// </summary>
/// <param name="filename">URL for the file containing the XML document to load. The URL can be either a local file or an HTTP URL (a Web address).</param>
/// <param name="output"></param>
public Scene Load(string filename, IOutput output)
{
document.Load(filename);
Scene scene = new Scene(output);
ConfigureScene(document["RayMan"], scene);
AddCamera(document["RayMan"], scene);
AddLights(document["RayMan"], scene);
AddObjects(document["RayMan"], scene);
return scene;
}
private void AddCamera(XmlNode rayManNode, Scene scene)
{
var cameraNode = rayManNode["Camera"];
var camera = cameraNode.ChildNodes[0];
var objectType = Assembly.GetExecutingAssembly().GetTypes().FirstOrDefault(t => t.Name == camera.Name);
// Position
Point position = CreatePoint(camera["Position"].InnerText);
// Width
float width = float.Parse(camera["Width"].InnerText);
// Height
float height = float.Parse(camera["Height"].InnerText);
if (camera["Up"] != null) {
// Up
Vector up = CreateVector(camera["Up"].InnerText);
// Right
Vector right = CreateVector(camera["Right"].InnerText);
scene.Camera = Activator.CreateInstance(objectType, new object[] { position, up, right, width, height }) as Camera;
} else {
Point lookAt = CreatePoint(camera["LookAt"].InnerText);
scene.Camera = Activator.CreateInstance(objectType, new object[] { position, lookAt, width, height }) as Camera;
}
}
private void AddObjects(XmlNode rayManNode, Scene scene)
{
var objectNodes = rayManNode["Objects"];
foreach (XmlNode o in objectNodes.ChildNodes) {
var objectType = Assembly.GetExecutingAssembly().GetTypes().FirstOrDefault(t => t.Name == o.Name);
Object obj = null;
switch (o.Name) {
case "Sphere":
Point centre = CreatePoint(o["Centre"].InnerText);
float size = float.Parse(o["Size"].InnerText);
obj = Activator.CreateInstance(objectType, new object[] { centre, size }) as Object;
break;
case "Triangle":
Point p1 = CreatePoint(o["P1"].InnerText);
Point p2 = CreatePoint(o["P2"].InnerText);
Point p3 = CreatePoint(o["P3"].InnerText);
obj = Activator.CreateInstance(objectType, new object[] { p1, p2, p3 }) as Object;
break;
}
obj.Material = CreateMaterial(rayManNode, o["Material"]);
scene.AddObject(obj);
}
}
private void ConfigureScene(XmlNode rayManNode, Scene scene)
{
var sceneNode = rayManNode["Scene"];
foreach (XmlNode node in sceneNode.ChildNodes) {
switch (node.Name) {
case "SubSampling":
scene.SubSampling = uint.Parse(node.InnerText);
break;
default:
throw new InvalidOperationException("Scene file is not recognised.");
}
}
}
