public void Build(SceneGraph scene)
{
BuildCache = new Dictionary<string, object>(StringComparer.CurrentCultureIgnoreCase);
var camera = scene.First<SceneCamera>();
Guard.NotNull(camera, "Couldn't find camera in scene");
var cameras = scene.OfType<SceneCamera>().ToArray();
Cameras = new Camera[cameras.Length];
for (int i = 0; i < cameras.Length; i++)
{
Cameras[i] = new Camera();
Cameras[i].LookAt(cameras[i].Position, cameras[i].Direction, cameras[i].Up);
Cameras[i].Fov = camera.Fov;
Cameras[i].BuildView();
}
var sceneGeometryData = scene.First<SceneMeshData>();
Guard.NotNull(sceneGeometryData, "Couldn't find sceneGeometryData in scene");
var sceneGeometry = scene.Subset<SceneMeshEntity>().ToArray();
Guard.NotNullOrEmpty(sceneGeometry, "No scene geometry present");
var sceneMaterials = scene.Subset<SceneMaterial>().ToArray();
Guard.NotNullOrEmpty(sceneMaterials, "No scene materials present");
var sceneLights = scene.Subset<SceneLightsource>().ToArray();
Guard.NotNullOrEmpty(sceneLights, "No scene lightsources present");
var sceneResources = scene.Subset<SceneResourceReference>().ToArray();
Camera = new Camera();
Camera.LookAt(camera.Position, camera.Direction, camera.Up);
Camera.Fov = camera.Fov;
Camera.BuildView();
Tracer.WriteLine("Start Building Materials");
this.BuildMaterials(sceneMaterials, sceneResources);
BuildCache.Add("Materials", sceneMaterials);
Tracer.WriteLine("Start Building Geometry");
var areaLights = sceneLights.Where(lt => lt.LightType == LightSourceTypes.Area).ToArray();
if (areaLights.Any())
{
BuildCache.Add("AreaLights", areaLights.ToArray());
}
this.BuildGeometry(sceneGeometryData, sceneGeometry, areaLights.Any(), areaLights);
this.BoundingSphereRadius = sceneGeometryData.BoundingSphereRadius;
BuildCache.Add("Geometry", sceneGeometry);
Tracer.WriteLine("Start Building Lightsources");
this.BuildLights(sceneLights);
Session.Frame.TopObject = this.topObject;
}