public MeshGeometry GetGeometry()
{
var geom = new MeshGeometry();
//var verts = VertexDict.Values.SelectMany(x => x);
geom.SetVertices(_Vertices);
geom.SetTriangles(_Triangles);
return(geom);
}
public void CombineGeometry(MeshGeometry geometry)
{
var triangleIndices = geometry.GetTriangleIndices();
var addedVertices = geometry.Vertices.Select(x => x.Clone()).ToList();
int vertexOffset = VertexCount;
addedVertices.ForEach(x => AddVertex(x, false));
for (int i = 0; i < geometry.IndexCount; i += 3)
{
var triangle = AddTriangle(
triangleIndices[i] + vertexOffset,
triangleIndices[i + 1] + vertexOffset,
triangleIndices[i + 2] + vertexOffset);
triangle.CopyIndexData(geometry.Triangles[i / 3]);
}
}
public static MeshGeometry Combine(params MeshGeometry[] geometries)
{
if (geometries.Length == 1)
{
return(geometries[0]);
}
var verts = new List <Vertex>();
var triangles = new List <Triangle>();
foreach (var geom in geometries)
{
verts.AddRange(geom.Vertices);
triangles.AddRange(geom.Triangles);
}
var newGeom = new MeshGeometry();
newGeom.SetVertices(verts);
newGeom.SetTriangles(triangles);
newGeom.BreakReferences();
return(newGeom);
}
public static MeshGeometry Create(Files.MeshStructures.MESH_DATA mesh)
{
var vertices = new List <Vertex>();
bool isTextured = mesh.UVs != null && mesh.UVs.Length > 0;
bool isFlexible = mesh.Bones != null && mesh.Bones.Length > 0;
for (int i = 0; i < mesh.Positions.Length; i++)
{
vertices.Add(new Vertex(
mesh.Positions[i],
mesh.Normals[i],
isTextured ? mesh.UVs[i] : Vector2.Empty
));
if (isFlexible)
{
var bones = mesh.Bones[i];
for (int j = 0; j < bones.BoneWeights.Length; j++)
{
vertices[i].BoneWeights.Add(new BoneWeight(bones.BoneWeights[j].BoneID, bones.BoneWeights[j].Weight));
}
}
}
var geom = new MeshGeometry();
geom.SetVertices(vertices);
for (int i = 0; i < mesh.Indices.Length; i += 3)
{
geom.AddTriangleFromIndices(
mesh.Indices[i].VertexIndex,
mesh.Indices[i + 1].VertexIndex,
mesh.Indices[i + 2].VertexIndex);
}
return(geom);
}
public MeshGeometry Clone()
{
var geom = new MeshGeometry();
geom._Vertices.AddRange(Vertices.Select(x => x.Clone()));
var triIdx = GetTriangleIndices();
for (int i = 0; i < triIdx.Length; i += 3)
{
geom._Triangles.Add(new Triangle(
geom.Vertices[triIdx[i]],
geom.Vertices[triIdx[i + 1]],
geom.Vertices[triIdx[i + 2]]));
}
for (int i = 0; i < Indices.Count; i++)
{
geom.Indices[i].AverageNormal = Indices[i].AverageNormal;
geom.Indices[i].RoundEdgeData = Indices[i].RoundEdgeData.Clone();
}
return(geom);
}
public void SeparateDistinctSurfaces()
{
var uniqueEdges = Triangles.SelectMany(t => t.Edges).EqualsDistinct().ToList();
Edge.CompareByPosition = false;
var edgeFaces = new Dictionary <Edge, List <Triangle> >();
foreach (var tri in Triangles)
{
for (int i = 0; i < 3; i++)
{
if (edgeFaces.TryGetValue(tri.Edges[i], out List <Triangle> faces))
{
if (!faces.Contains(tri))
{
faces.Add(tri);
}
}
else
{
edgeFaces.Add(tri.Edges[i], new List <Triangle>()
{
tri
});
}
}
}
var triList = Triangles.ToList();
void AddConnectedFaces(Triangle tria, List <Triangle> remainingFaces, List <Triangle> currentFaces)
{
if (!currentFaces.Any())
{
remainingFaces.Remove(tria);
currentFaces.Add(tria);
}
var connectedFaces = tria.Edges.SelectMany(x => edgeFaces[x]).Where(y => y != tria);
var facesToAdd = connectedFaces.Intersect(remainingFaces).ToList();
foreach (var face in facesToAdd)
{
remainingFaces.Remove(face);
currentFaces.Add(face);
}
foreach (var face in facesToAdd)
{
AddConnectedFaces(face, remainingFaces, currentFaces);
}
}
var geomList = new List <MeshGeometry>();
while (triList.Any())
{
var curTri = triList[0];
var curTriList = new List <Triangle>();
AddConnectedFaces(curTri, triList, curTriList);
var curGeom = new MeshGeometry();
curGeom.SetTriangles(curTriList, true);
curGeom.BreakReferences();
geomList.Add(curGeom);
}
}
public static MeshGeometry FromXml(XDocument document)
{
var geomElem = document.Element("LddGeometry");
if (geomElem == null)
{
return(null);
}
if (geomElem.HasElement("Positions", out XElement posElem) &&
geomElem.HasElement("Normals", out XElement normElem) &&
geomElem.HasElement("Indices", out XElement indElem))
{
var positions = ParseVector3Array(posElem.Value);
var normals = ParseVector3Array(normElem.Value);
List <Vector2> uvs = null;
if (geomElem.HasElement("UVs", out XElement uvElem))
{
uvs = ParseVector2Array(uvElem.Value);
}
var indices = indElem.Value.Split(' ').Select(v => int.Parse(v)).ToList();
var vertices = new List <Vertex>();
var triangles = new List <Triangle>();
var reCoords = new List <RoundEdgeData>();
for (int i = 0; i < positions.Count; i++)
{
vertices.Add(new Vertex(
positions[i],
normals[i],
uvs?[i] ?? Vector2.Empty
));
}
if (geomElem.HasElement("BoneWeights", out XElement boneWeights))
{
var bwValues = boneWeights.Value.Split(' ');
for (int i = 0; i < bwValues.Length; i += 3)
{
int vIdx = int.Parse(bwValues[i]);
int bID = int.Parse(bwValues[i + 1]);
float weight = float.Parse(bwValues[i + 2], CultureInfo.InvariantCulture);
vertices[vIdx].BoneWeights.Add(new BoneWeight(bID, weight));
}
}
if (geomElem.HasElement("Outlines", out XElement outlineElem))
{
var outlineUVs = ParseVector2Array(outlineElem.Value);
if (outlineUVs.Count % 6 != 0)
{
//problem
}
for (int i = 0; i < outlineUVs.Count; i += 6)
{
var reData = new RoundEdgeData();
for (int j = 0; j < 6; j++)
{
reData.Coords[j] = outlineUVs[i + j];
}
reCoords.Add(reData);
}
}
for (int i = 0; i < indices.Count; i += 3)
{
var tri = new Triangle(
vertices[indices[i]],
vertices[indices[i + 1]],
vertices[indices[i + 2]]);
triangles.Add(tri);
for (int j = 0; j < 3; j++)
{
if (i + j >= reCoords.Count)
{
break;
}
tri.Indices[j].RoundEdgeData = reCoords[i + j];
}
}
var geom = new MeshGeometry();
geom.SetVertices(vertices);
geom.SetTriangles(triangles);
return(geom);
}
return(null);
}
public static MeshGeometry FromStream(Stream stream)
{
var geom = new MeshGeometry();
using (var br = new BinaryReaderEx(stream))
{
int vertCount = br.ReadInt32();
int idxCount = br.ReadInt32();
bool isTexured = br.ReadBoolean();
bool isFlexible = br.ReadBoolean();
var positions = new List <Vector3>();
var normals = new List <Vector3>();
var texCoords = new List <Vector2>();
for (int i = 0; i < vertCount; i++)
{
positions.Add(new Vector3(br.ReadSingles(3)));
}
for (int i = 0; i < vertCount; i++)
{
normals.Add(new Vector3(br.ReadSingles(3)));
}
if (isTexured)
{
for (int i = 0; i < vertCount; i++)
{
texCoords.Add(new Vector2(br.ReadSingles(2)));
}
}
var verts = new List <Vertex>();
for (int i = 0; i < vertCount; i++)
{
verts.Add(new Vertex(
positions[i],
normals[i],
isTexured ? texCoords[i] : Vector2.Empty
));
}
var triIndices = new List <int>();
var avgNormals = new List <Vector3>();
var reCoords = new List <RoundEdgeData>();
for (int i = 0; i < idxCount; i++)
{
triIndices.Add(br.ReadInt32());
}
for (int i = 0; i < idxCount; i++)
{
avgNormals.Add(new Vector3(br.ReadSingles(3)));
}
for (int i = 0; i < idxCount; i++)
{
var reData = new RoundEdgeData(br.ReadSingles(12));
if (!geom.HasRoundEdgeData && !reData.IsEmpty)
{
geom.HasRoundEdgeData = true;
}
reCoords.Add(reData);
}
var triangles = new List <Triangle>();
for (int i = 0; i < idxCount; i += 3)
{
var tri = new Triangle(
verts[triIndices[i]],
verts[triIndices[i + 1]],
verts[triIndices[i + 2]]);
triangles.Add(tri);
for (int j = 0; j < 3; j++)
{
tri.Indices[j].AverageNormal = avgNormals[i + j];
tri.Indices[j].RoundEdgeData = reCoords[i + j];
}
}
if (isFlexible)
{
for (int i = 0; i < vertCount; i++)
{
int boneCount = br.ReadInt32();
for (int j = 0; j < boneCount; j++)
{
verts[i].BoneWeights.Add(new BoneWeight(br.ReadInt32(), br.ReadSingle()));
}
}
}
geom.SetVertices(verts);
geom.SetTriangles(triangles);
}
return(geom);
}
public static List <MeshGeometry> SplitSurfaces(MeshGeometry mesh)
{
var currentMesh = new GeometryBuilder();
var remainingTriangles = mesh.Triangles.ToList();
var resultingMeshes = new List <MeshGeometry>();
var edgeTriangleDic = new Dictionary <Edge, List <Triangle> >();
//var allEdges = remainingTriangles.SelectMany(x => x.Edges).Distinct();
foreach (var tri in remainingTriangles)
{
foreach (var edge in tri.Edges)
{
if (!edgeTriangleDic.ContainsKey(edge))
{
edgeTriangleDic.Add(edge, new List <Triangle>());
}
edgeTriangleDic[edge].Add(tri);
}
}
Triangle TakeTriangle(int index)
{
var result = remainingTriangles[index];
remainingTriangles.RemoveAt(index);
return(result);
}
IEnumerable <Triangle> GetNeighboringTriangles(Triangle triangle)
{
var neighbors = triangle.Edges.SelectMany(e =>
edgeTriangleDic[e]).Intersect(remainingTriangles).ToList();
foreach (var tri in neighbors)
{
remainingTriangles.Remove(tri);
}
foreach (var tri in neighbors.ToArray())
{
neighbors.AddRange(GetNeighboringTriangles(tri));
}
return(neighbors);
//for (int i = 0; i < remainingTriangles.Count; i++)
//{
// if (triangle.ShareEdge(remainingTriangles[i], false))
// {
// yield return TakeTriangle(i);
// i--;
// }
//}
}
while (remainingTriangles.Count > 0)
{
var curTri = TakeTriangle(0);
currentMesh.AddTriangle(curTri);
var neighbors = GetNeighboringTriangles(curTri);
foreach (var tri in neighbors)
{
currentMesh.AddTriangle(tri);
}
resultingMeshes.Add(currentMesh.GetGeometry());
currentMesh.Reset();
}
return(resultingMeshes);
}
