public void CreateProjectionMatrix()
{
var U = x;
var V = y;
var N = (Target - (Vector)Position).Normalize();
var C = Position;
int w = Width;
int h = Height;
//fieldOfViewX = fieldOfViewY*2.1f;
var m1 = new Matrix4x4(w / 2.0f * ((float)Math.Tan(MathLab.Radians(fieldOfViewY * 0.5f))), 0, -w * 0.5f, 0,
0, h / 2.0f * ((float)Math.Tan(MathLab.Radians(fieldOfViewX * 0.5f))), -h * 0.5f, 0,
0, 0, 1, 0,
0, 0, -1, 0);
var m2 = new Matrix4x4(U.X, U.Y, U.Z, 0,
V.X, V.Y, V.Z, 0,
-N.X, -N.Y, -N.Z, 0,
0, 0, 0, 1);
var m3 = new Matrix4x4(1, 0, 0, -C.X,
0, 1, 0, -C.Y,
0, 0, 1, -C.Z,
0, 0, 0, 1);
this.projection = m1 * m2 * m3;
projectTransform = new Transform(projection, Matrix4x4.Inverse(ref projection));
}
public EnvironmentCamera(Point position, int w, int h)
{
var mat = new Matrix4x4().Translate(position.x, position.y, position.z);
world2Cam = new Transform(ref mat);
this.rayOrigin = position;
Width = w;
Height = h;
}
public override void LookAt(Library.Core.Primitives.Point vector, Library.Core.Primitives.Point vector_2, Library.Core.Primitives.Vector vector_3)
{
var mat = new Matrix4x4().Translate(vector.x, vector.y, vector.z);
world2Cam = new Transform(ref mat);
this.rayOrigin = vector;
}
private SceneGraphInfo CreateSceneGraph( SceneGeometryInfo geoInfo,
Transform worldTransform,
SceneGraphChangesType changes = SceneGraphChangesType.FullGraph ) {
var scene = new SceneGraphInfo() { RootNode = new SceneGraphRootNode() };
var cams = (cameras.Select(
cameraInfo =>
new {
cameraInfo,
camTransform = Transform.LookAt((Point)cameraInfo.Position, (Point)cameraInfo.Direction, cameraInfo.Up)
})
.Select(
@t =>
new CameraNode(@t.camTransform, @t.camTransform.GetInverse(), @t.cameraInfo) {
Name = @t.cameraInfo.CameraName
})).Cast<SceneGraphElement>().ToList();
var scg = new SceneGeometryDataNode(worldTransform, worldTransform.GetInverse(), geoInfo);
scene.RootNode.Children.Add(scg);
var geoGroup = new GeometryGroupNode(worldTransform, worldTransform.GetInverse(), scg.Id) {FindRoot = scene.RootNode};
scene.RootNode.Children.Add(geoGroup);
var elements = geoInfo.Geometry.Select(
geometryInfo => new { geometryInfo, geoTransform = new Transform()} )
.Select(
@t =>
new GeometryElementNode(@t.geoTransform, @t.geoTransform.GetInverse(),
@t.geometryInfo)).ToArray();
geoGroup.Children.AddRange(elements);
geoGroup.Children.AddRange(elements.Select(geoData => new GeometryInstanceNode(geoData.ObjectToWorld, geoData.WorldToObject, geoData.Id){ FindRoot = scg }));
scene.RootNode.Children.AddRange(cams);
scene.RootNode.Children.AddRange(mats.Select(item => new SceneMaterialDataNode(item)));
scene.RootNode.Children.AddRange(this.lights.Select(item=>new LightsourceNode(null, null, item)));
if (volumeMats != null && volumeMats.Any())
scene.RootNode.Children.AddRange(volumeMats.Select(item=>new VolumeNode<VolumeMaterialInfo>(null, null, item)));
scene.RootNode.WorldToObject = worldTransform;
return scene;
}
public GeometryGroupNode(Transform o2w, Transform w2o, int did) : base(o2w, w2o, did)
{
}
public CameraNode(Transform o2w, Transform w2o, CameraInfo camera) : base(o2w, w2o) {
this.camera = camera;
}
protected SceneGraphElement(Transform o2w, Transform w2o) {
this.ObjectToWorld = o2w;
this.WorldToObject = w2o;
this.Children = new List<SceneGraphElement>();
}
public void ApplyTransform(Transform m)
{
this.Org = m & this.Org;
this.Dir = m & this.Dir;
}
public ReferenceNode(Transform o2w, Transform w2o, int did) : base(o2w, w2o)
{
this.DataNodeId = did;
}
public GeometryInstanceNode(Transform o2w, Transform w2o, int geoElementId) : base(o2w, w2o, geoElementId)
{
}