private void BackfaceCulling()
{
foreach (Triangle triangle in Triangles)
{
Vector3 n = triangle.SurfaceNormal().Normalize();
triangle.IsBackFaced = Math.Round(n.Z, 1) >= 0;
}
//Logger.Value("culled triangles", Triangles.Count(x => x.IsBackFaced));
Logger.Value("valid triangles", Triangles.Count(x => !x.IsBackFaced));
}
private void InitLazyProps()
{
this._ModelData = new Lazy <ModelBase>(() => _ModelDataInitializer());
this._Vertices = new Lazy <Vertex[]>(() => Triangles.SelectMany(t => t).Union(new Vertex[0]).ToArray());
this._Textures = new Lazy <Texture[]>(() => Triangles.Select(t => t.Texture).Union(new Texture[0]).ToArray());
this._Joints = new Lazy <Joint[]>(() => RootJoint == null ? new Joint[0] : RootJoint.GetSelfAndDescendents().ToArray());
this._Animations = new Lazy <AnimationSequence[]>(() => Joints.Select(j => j.Animation).ToArray());
this._IsVisible = new Lazy <bool>(() => Textures.Where(t => ExcludeTexturePrefixes.Count(v => t.Name.StartsWith(v)) == 0).Count() != 0);
this._IsAnimated = new Lazy <bool>(() => Animations.Count() != 0 && NumAnimationKeyFrames != 0);
this._HasMultipleTextures = new Lazy <bool>(() => Textures.Count() > 1);
this._HasGeometry = new Lazy <bool>(() => Triangles.Count() != 0);
this._HasNormals = new Lazy <bool>(() => HasGeometry && Vertices.First().Normal != Vector4.Zero);
this._HasTangents = new Lazy <bool>(() => HasGeometry && Vertices.First().Tangent != Vector4.Zero);
this._HasBinormals = new Lazy <bool>(() => HasGeometry && Vertices.First().Binormal != Vector4.Zero);
this._HasSkeleton = new Lazy <bool>(() => RootJoint != null);
this._NumJoints = new Lazy <int>(() => Joints.Count());
this._NumAnimationFrames = new Lazy <int>(() => Animations.Select(a => a.NumFrames).Union(new[] { 0 }).Max());
this._NumAnimationKeyFrames = new Lazy <int>(() => Animations.Select(anim => anim.Frames.Select(f => f.FrameNum)).Aggregate((a, v) => a.Union(v)).Count());
}
public void Rebuild(float min)
{
float minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew;
// 1, 2, 3, 4 oct
Vector3 center = new Vector3((SpaceCube.x1.X + SpaceCube.x2.X) * 0.5f, (SpaceCube.x1.Y + SpaceCube.x4.Y) * 0.5f, (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f);
minXnew = (SpaceCube.x1.X + SpaceCube.x2.X) * 0.5f;
maxXnew = SpaceCube.x1.X;
minYnew = (SpaceCube.x1.Y + SpaceCube.x4.Y) * 0.5f;
maxYnew = SpaceCube.x1.Y;
minZnew = (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f;
maxZnew = SpaceCube.x1.Z;
if (Triangles.Count() < 100 || (maxXnew - minXnew) < min)
{
return;
}
DaughterNodes[0] = new TreeNode(minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew);
maxXnew = (SpaceCube.x1.X + SpaceCube.x2.X) * 0.5f;
minXnew = SpaceCube.x2.X;
minYnew = (SpaceCube.x1.Y + SpaceCube.x4.Y) * 0.5f;
maxYnew = SpaceCube.x1.Y;
minZnew = (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f;
maxZnew = SpaceCube.x1.Z;
DaughterNodes[1] = new TreeNode(minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew);
maxXnew = (SpaceCube.x1.X + SpaceCube.x2.X) * 0.5f;
minXnew = SpaceCube.x2.X;
maxYnew = (SpaceCube.x2.Y + SpaceCube.x3.Y) * 0.5f;
minYnew = SpaceCube.x3.Y;
minZnew = (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f;
maxZnew = SpaceCube.x1.Z;
DaughterNodes[2] = new TreeNode(minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew);
minXnew = (SpaceCube.x3.X + SpaceCube.x4.X) * 0.5f;
maxXnew = SpaceCube.x4.X;
maxYnew = (SpaceCube.x1.Y + SpaceCube.x4.Y) * 0.5f;
minYnew = SpaceCube.x4.Y;
minZnew = (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f;
maxZnew = SpaceCube.x1.Z;
DaughterNodes[3] = new TreeNode(minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew);
// 5, 6, 7, 8 oct
minXnew = (SpaceCube.x1.X + SpaceCube.x2.X) * 0.5f;
maxXnew = SpaceCube.x1.X;
minYnew = (SpaceCube.x1.Y + SpaceCube.x4.Y) * 0.5f;
maxYnew = SpaceCube.x1.Y;
maxZnew = (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f;
minZnew = SpaceCube.x5.Z;
DaughterNodes[4] = new TreeNode(minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew);
maxXnew = (SpaceCube.x1.X + SpaceCube.x2.X) * 0.5f;
minXnew = SpaceCube.x2.X;
minYnew = (SpaceCube.x1.Y + SpaceCube.x4.Y) * 0.5f;
maxYnew = SpaceCube.x1.Y;
maxZnew = (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f;
minZnew = SpaceCube.x5.Z;
DaughterNodes[5] = new TreeNode(minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew);
maxXnew = (SpaceCube.x1.X + SpaceCube.x2.X) * 0.5f;
minXnew = SpaceCube.x2.X;
maxYnew = (SpaceCube.x2.Y + SpaceCube.x3.Y) * 0.5f;
minYnew = SpaceCube.x3.Y;
maxZnew = (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f;
minZnew = SpaceCube.x5.Z;
DaughterNodes[6] = new TreeNode(minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew);
minXnew = (SpaceCube.x3.X + SpaceCube.x4.X) * 0.5f;
maxXnew = SpaceCube.x4.X;
maxYnew = (SpaceCube.x1.Y + SpaceCube.x4.Y) * 0.5f;
minYnew = SpaceCube.x4.Y;
maxZnew = (SpaceCube.x1.Z + SpaceCube.x5.Z) * 0.5f;
minZnew = SpaceCube.x5.Z;
DaughterNodes[7] = new TreeNode(minXnew, maxXnew, minYnew, maxYnew, minZnew, maxZnew);
List <Triangle> newVectors = new List <Triangle>();
while (Triangles.Count() != 0)
{
int counter1 = -1;
int counter2 = -1;
int counter3 = -1;
Triangle i = Triangles.Last();
Triangles.RemoveAt(Triangles.Count() - 1);
counter1 = PositionFinder(i.N0, center);
counter2 = PositionFinder(i.N1, center);
counter3 = PositionFinder(i.N2, center);
if (counter1 == counter2 && counter2 == counter3)
{
DaughterNodes[counter1].Triangles.Add(i);
}
else
{
newVectors.Add(i);
}
}
Triangles = newVectors;
List = false;
DaughterNodes[0].List = true;
DaughterNodes[0].Rebuild(min);
DaughterNodes[1].List = true;
DaughterNodes[1].Rebuild(min);
DaughterNodes[2].List = true;
DaughterNodes[2].Rebuild(min);
DaughterNodes[3].List = true;
DaughterNodes[3].Rebuild(min);
DaughterNodes[4].List = true;
DaughterNodes[4].Rebuild(min);
DaughterNodes[5].List = true;
DaughterNodes[5].Rebuild(min);
DaughterNodes[6].List = true;
DaughterNodes[6].Rebuild(min);
DaughterNodes[7].List = true;
DaughterNodes[7].Rebuild(min);
}
