private FBXNode CreateFbxMesh(MeshLodSection section, FBXScene pScene)
{
FBXMesh fbxMesh = FBXMesh.Create(pScene, section.matName);
FBXGeometryElementNormal lGeometryElementNormal = fbxMesh.CreateElementNormal();
lGeometryElementNormal.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementBinormal lGeometryElementBiNormal = fbxMesh.CreateElementBinormal();
lGeometryElementBiNormal.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementTangent lGeometryElementTangent = fbxMesh.CreateElementTangent();
lGeometryElementTangent.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
fbxMesh.InitControlPoints(section.vertices.Count);
FBXGeometryElementMaterial lMaterialElement = fbxMesh.CreateElementMaterial();
lMaterialElement.SetMappingMode(FBXWrapper.MappingMode.eByPolygon);
lMaterialElement.SetReferenceMode(FBXWrapper.ReferenceMode.eIndexToDirect);
FBXGeometryElementUV lUVDiffuseElement = fbxMesh.CreateElementUV(section.matName);
lUVDiffuseElement.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
lUVDiffuseElement.SetReferenceMode(FBXWrapper.ReferenceMode.eIndexToDirect);
lUVDiffuseElement.SetIndexArrayCount(section.vertices.Count);
for (int j = 0; j < section.vertices.Count; j++)
{
FBXVector4 position = new FBXVector4(section.vertices[j].position.members[0] * exportScale, section.vertices[j].position.members[1] * exportScale, section.vertices[j].position.members[2] * exportScale, 0);
FBXVector4 normal = new FBXVector4(section.vertices[j].normals.members[0], section.vertices[j].normals.members[1], section.vertices[j].normals.members[2], section.vertices[j].normals.members[3]);
FBXVector4 textCoords = new FBXVector4(section.vertices[j].texCoords.members[0], (-section.vertices[j].texCoords.members[1] + 1), 0, 0);
FBXVector4 bitangent = new FBXVector4(section.vertices[j].biTangents.members[0], section.vertices[j].biTangents.members[1], section.vertices[j].biTangents.members[2], section.vertices[j].biTangents.members[3]);
FBXVector4 tangent = new FBXVector4(section.vertices[j].tangents.members[0], section.vertices[j].tangents.members[1], section.vertices[j].tangents.members[2], section.vertices[j].tangents.members[3]);
fbxMesh.SetControlPoint(j, position);
lGeometryElementNormal.Add(normal);
lGeometryElementBiNormal.Add(bitangent);
lGeometryElementTangent.Add(tangent);
lUVDiffuseElement.Add(textCoords);
}
for (int j = 0; j < section.indicies.Count; j++)
{
if (j % 3 == 0)
{
fbxMesh.EndPolygon();
fbxMesh.BeginPolygon();
}
fbxMesh.AddPolygon(section.indicies[j]);
}
fbxMesh.EndPolygon();
FBXNode lMeshNode = FBXNode.Create(pScene, section.matName);
lMeshNode.SetNodeAttribute(fbxMesh);
lMeshNode.AddMaterial(pScene, section.matName);
return(lMeshNode);
}
private FBXNode CreateFbxMesh(MESkeletalMesh mesh, string mname, FBXScene pScene, float exportScale = 1.0f)
{
MESkeletalMesh.LODModelStruct lod = mesh.LODModels[0];
FBXMesh fbxMesh = FBXMesh.Create(pScene, mname);
FBXNode lMeshNode = FBXNode.Create(pScene, mname);
lMeshNode.SetNodeAttribute(fbxMesh);
FBXGeometryElementTangent lGeometryElementTangent = fbxMesh.CreateElementTangent();
lGeometryElementTangent.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementMaterial lMaterialElement = fbxMesh.CreateElementMaterial();
lMaterialElement.SetMappingMode(FBXWrapper.MappingMode.eByPolygon);
lMaterialElement.SetReferenceMode(FBXWrapper.ReferenceMode.eIndexToDirect);
fbxMesh.InitControlPoints(lod.NumVertices);
// init UV maps
FBXGeometryElementUV[] UVs = new FBXGeometryElementUV[lod.Sections.Count];
for (int s = 0; s < lod.Sections.Count; s++)
{
string matName = GetMatName(mesh, lod, s);
UVs[s] = fbxMesh.CreateElementUV(matName);
UVs[s].SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
}
// vertices
for (int j = 0; j < lod.VertexBufferGPUSkin.Vertices.Count; j++)
{
var vertex = lod.VertexBufferGPUSkin.Vertices[j];
FBXVector4 position = new FBXVector4(vertex.Position.X * exportScale, -vertex.Position.Y * exportScale, vertex.Position.Z * exportScale, 0);
FBXVector4 normal = new FBXVector4(vertex.TangentX, 0, vertex.TangentZ, 0);
fbxMesh.SetControlPoint(j, position);
lGeometryElementTangent.Add(normal);
// uvs
for (int s = 0; s < lod.Sections.Count; s++)
{
var sectionVerts = GetSectionVertices(mesh, 0, s);
if (sectionVerts.Contains(j))
{
FBXVector4 texCoords = new FBXVector4(vertex.U, 1 - vertex.V, 0, 0);
UVs[s].Add(texCoords);
}
else
{
UVs[s].Add(new FBXVector4(0, 0, 0, 0));
}
}
}
// faces & mats
for (int s = 0; s < lod.Sections.Count; s++)
{
int chunkId = lod.Sections[s].ChunkIndex;
var chunk = lod.Chunks[chunkId];
// mat
string matName = GetMatName(mesh, lod, s);
lMeshNode.AddMaterial(pScene, matName);
// faces
for (int j = 0; j < lod.Sections[s].NumTriangles; j++)
{
int baseI = lod.Sections[s].BaseIndex;
fbxMesh.BeginPolygon(s);
fbxMesh.AddPolygon(lod.IndexBuffer.Indexes[baseI + j * 3]);
fbxMesh.AddPolygon(lod.IndexBuffer.Indexes[baseI + j * 3 + 1]);
fbxMesh.AddPolygon(lod.IndexBuffer.Indexes[baseI + j * 3 + 2]);
fbxMesh.EndPolygon();
}
}
return(lMeshNode);
}
private void ExportShape(FBXScene fbxScene, FBXNode parentNode, CSGShape shape)
{
if (shape.RepresentativeEntityType == CSGEntityType.CSGEShape && shape.ShapeType == CSGShapeType.CSGShapeStandard && shape.GetFaceCount() > 0)
{
Dictionary <long, int> fbxPointIdList = new Dictionary <long, int>();
List <CSGVectorLong> fbxPointList = new List <CSGVectorLong>();
CSGVector[] pointList = null;
int pointListCount = 0;
CSGVector[] normalList = null;
int normalListCount = 0;
CSGUV[] textureCoordinateList = null;
int textureCoordinateListCount = 0;
CSGMaterialFaceList[] materialFaceList = null;
int materialFaceListCount = 0;
shape.GetGeometryMaterialSorted(
true,
false,
true,
ref pointList,
ref pointListCount,
ref normalList,
ref normalListCount,
ref textureCoordinateList,
ref textureCoordinateListCount,
ref materialFaceList,
ref materialFaceListCount);
foreach (var material in materialFaceList)
{
this.ExportMaterial(fbxScene, parentNode, material.Material);
foreach (var face in material.FaceList)
{
foreach (var facePoint in face.PointList)
{
long fbxPointKey = facePoint.PointID << 42 | facePoint.NormalID << 21 | facePoint.TextureCoordinateListID[0];
CSGVectorLong fbxPoint;
if (fbxPointIdList.TryGetValue(fbxPointKey, out int fbxPointId))
{
fbxPoint = fbxPointList[fbxPointId];
}
else
{
fbxPoint = new CSGVectorLong()
{
X = facePoint.PointID, Y = facePoint.NormalID, Z = facePoint.TextureCoordinateListID[0]
};
fbxPointId = fbxPointList.Count;
fbxPointList.Add(fbxPoint);
fbxPointIdList.Add(fbxPointKey, fbxPointId);
}
}
}
}
string shapeName = this.GetUniqueName(shape.Name, "shape");
FBXMesh fbxMesh = FBXMesh.Create(fbxScene, shapeName);
parentNode.AddNodeAttribute(fbxMesh);
fbxMesh.InitControlPoints(fbxPointIdList.Count);
fbxMesh.InitMaterialIndices(ArcManagedFBX.Types.EMappingMode.eByPolygon);
fbxMesh.InitNormals(fbxPointIdList.Count);
fbxMesh.InitTextureUV(0);
fbxMesh.InitTextureUVIndices(ArcManagedFBX.Types.EMappingMode.eByControlPoint);
int id = 0;
foreach (var point in fbxPointList)
{
FBXVector controlPoint = new FBXVector(pointList[point.X].X, pointList[point.X].Y, -pointList[point.X].Z);
fbxMesh.SetControlPointAt(controlPoint, id);
FBXVector normal = new FBXVector(normalList[point.Y].X, normalList[point.Y].Y, -normalList[point.Y].Z);
fbxMesh.SetControlPointNormalAt(normal, id);
ConvertTextureCoordinate(textureCoordinateList, point);
fbxMesh.AddTextureUV(new FBXVector2(textureCoordinateList[point.Z].U, textureCoordinateList[point.Z].V));
id++;
}
int materialId = 0;
foreach (var material in materialFaceList)
{
foreach (var face in material.FaceList)
{
fbxMesh.BeginPolygon(materialId, -1, -1, true);
foreach (var facePoint in face.PointList.Reverse())
{
long fbxPointKey = facePoint.PointID << 42 | facePoint.NormalID << 21 | facePoint.TextureCoordinateListID[0];
if (fbxPointIdList.TryGetValue(fbxPointKey, out int fbxPointId))
{
fbxMesh.AddPolygon(fbxPointId, fbxPointId);
}
else
{
// should never happen
Debug.WriteLine("what to do for the impossible?");
fbxMesh.AddPolygon(0, 0);
}
}
fbxMesh.EndPolygon();
}
materialId++;
}
}
}
private FBXNode CreateFbxMesh(MeshLOD lod, FBXScene pScene)
{
FBXMesh fbxMesh = FBXMesh.Create(pScene, lod.shortName);
FBXNode lMeshNode = FBXNode.Create(pScene, lod.shortName);
lMeshNode.SetNodeAttribute(fbxMesh);
FBXGeometryElementNormal lGeometryElementNormal = fbxMesh.CreateElementNormal();
lGeometryElementNormal.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementBinormal lGeometryElementBiNormal = fbxMesh.CreateElementBinormal();
lGeometryElementBiNormal.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementTangent lGeometryElementTangent = fbxMesh.CreateElementTangent();
lGeometryElementTangent.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementMaterial lMaterialElement = fbxMesh.CreateElementMaterial();
lMaterialElement.SetMappingMode(FBXWrapper.MappingMode.eByPolygon);
lMaterialElement.SetReferenceMode(FBXWrapper.ReferenceMode.eIndexToDirect);
int verticesCount = lod.GetLODTotalVertCount();
fbxMesh.InitControlPoints(verticesCount);
List <FBXGeometryElementUV[]> UVs = new List <FBXGeometryElementUV[]>();
for (int i = 0; i < lod.sections.Count; i++)
{
UVs.Add(new FBXGeometryElementUV[Vertex.UV_SLOTS]);
}
int VertexOffset = 0;
for (int i = 0; i < lod.sections.Count; i++)
{
MeshLodSection section = lod.sections[i];
for (int j = 0; j < section.vertices.Count; j++)
{
FBXVector4 position = new FBXVector4(section.vertices[j].position.members[0] * exportScale, section.vertices[j].position.members[1] * exportScale, section.vertices[j].position.members[2] * exportScale, 0);
FBXVector4 normal = new FBXVector4(section.vertices[j].normals.members[0], section.vertices[j].normals.members[1], section.vertices[j].normals.members[2], section.vertices[j].normals.members[3]);
fbxMesh.SetControlPoint(VertexOffset + j, position);
lGeometryElementNormal.Add(normal);
// adding a check on bitangent and tangent as some meshes don't have them...
if (section.vertices[j].biTangents.members.Length == 4)
{
FBXVector4 bitangent = new FBXVector4(section.vertices[j].biTangents.members[0], section.vertices[j].biTangents.members[1], section.vertices[j].biTangents.members[2], section.vertices[j].biTangents.members[3]);
lGeometryElementBiNormal.Add(bitangent);
}
if (section.vertices[j].tangents.members.Length == 4)
{
FBXVector4 tangent = new FBXVector4(section.vertices[j].tangents.members[0], section.vertices[j].tangents.members[1], section.vertices[j].tangents.members[2], section.vertices[j].tangents.members[3]);
lGeometryElementTangent.Add(tangent);
}
// multiple UVs management
for (int uvInd = 0; uvInd < Vertex.UV_SLOTS; uvInd++)
{
if (section.vertices[j].texCoords[uvInd] != null)
{
FBXVector4 texCoords = new FBXVector4(section.vertices[j].texCoords[uvInd].members[0], (-section.vertices[j].texCoords[uvInd].members[1] + 1), 0, 0);
if (UVs[i][uvInd] == null)
{
// if the UV layer does not already exist, we create it...
UVs[i][uvInd] = fbxMesh.CreateElementUV(section.matName + "_" + uvInd);
UVs[i][uvInd].SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
UVs[i][uvInd].SetReferenceMode(FBXWrapper.ReferenceMode.eDirect);
// ... and fill it with empty vectors for all previous sections vertices.
for (int p = 0; p < VertexOffset + j; p++)
{
UVs[i][uvInd].Add(new FBXVector4(0, 0, 0, 0));
}
}
// and now we can add the tex coord of the current vertex we're treating.
UVs[i][uvInd].Add(texCoords);
}
}
// since we use direct reference mode for UV, every vertices in the mesh must be present in every UV layer
// so for every UV layer created for previous section, we had an empty vector for this vertex.
UVs.Where((o, oi) => oi != i).ToList().ForEach(suv =>
{
for (int subuv = 0; subuv < Vertex.UV_SLOTS; subuv++)
{
if (suv[subuv] != null)
{
suv[subuv].Add(new FBXVector4(0, 0, 0, 0));
}
}
}
);
}
for (int j = 0; j < section.indicies.Count; j++)
{
if (j % 3 == 0)
{
fbxMesh.EndPolygon();
fbxMesh.BeginPolygon(i);
}
fbxMesh.AddPolygon(VertexOffset + section.indicies[j]);
}
fbxMesh.EndPolygon();
VertexOffset = VertexOffset + section.vertices.Count;
lMeshNode.AddMaterial(pScene, section.matName);
}
return(lMeshNode);
}
private FBXNode CreateFbxMesh(MeshLOD lod, FBXScene pScene)
{
FBXMesh fbxMesh = FBXMesh.Create(pScene, lod.shortName);
FBXNode lMeshNode = FBXNode.Create(pScene, lod.shortName);
lMeshNode.SetNodeAttribute(fbxMesh);
FBXGeometryElementNormal lGeometryElementNormal = fbxMesh.CreateElementNormal();
lGeometryElementNormal.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementBinormal lGeometryElementBiNormal = fbxMesh.CreateElementBinormal();
lGeometryElementBiNormal.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementTangent lGeometryElementTangent = fbxMesh.CreateElementTangent();
lGeometryElementTangent.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementMaterial lMaterialElement = fbxMesh.CreateElementMaterial();
lMaterialElement.SetMappingMode(FBXWrapper.MappingMode.eByPolygon);
lMaterialElement.SetReferenceMode(FBXWrapper.ReferenceMode.eIndexToDirect);
int verticesCount = lod.GetLODTotalVertCount();
fbxMesh.InitControlPoints(verticesCount);
List <FBXGeometryElementUV> UVs = new List <FBXGeometryElementUV>();
for (int i = 0; i < lod.sections.Count; i++)
{
MeshLodSection section = lod.sections[i];
FBXGeometryElementUV lUVDiffuseElement = fbxMesh.CreateElementUV(section.matName);
lUVDiffuseElement.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
lUVDiffuseElement.SetReferenceMode(FBXWrapper.ReferenceMode.eDirect);
UVs.Add(lUVDiffuseElement);
}
int VertexOffset = 0;
for (int i = 0; i < lod.sections.Count; i++)
{
MeshLodSection section = lod.sections[i];
for (int j = 0; j < section.vertices.Count; j++)
{
FBXVector4 position = new FBXVector4(section.vertices[j].position.members[0] * exportScale, section.vertices[j].position.members[1] * exportScale, section.vertices[j].position.members[2] * exportScale, 0);
FBXVector4 normal = new FBXVector4(section.vertices[j].normals.members[0], section.vertices[j].normals.members[1], section.vertices[j].normals.members[2], section.vertices[j].normals.members[3]);
FBXVector4 textCoords = new FBXVector4(section.vertices[j].texCoords.members[0], (-section.vertices[j].texCoords.members[1] + 1), 0, 0);
FBXVector4 bitangent = new FBXVector4(section.vertices[j].biTangents.members[0], section.vertices[j].biTangents.members[1], section.vertices[j].biTangents.members[2], section.vertices[j].biTangents.members[3]);
FBXVector4 tangent = new FBXVector4(section.vertices[j].tangents.members[0], section.vertices[j].tangents.members[1], section.vertices[j].tangents.members[2], section.vertices[j].tangents.members[3]);
fbxMesh.SetControlPoint(VertexOffset + j, position);
lGeometryElementNormal.Add(normal);
lGeometryElementBiNormal.Add(bitangent);
lGeometryElementTangent.Add(tangent);
int uvI = 0;
foreach (FBXGeometryElementUV uv in UVs)
{
if (uvI == i)
{
uv.Add(textCoords);
}
else
{
uv.Add(new FBXVector4(0, 0, 0, 0));
}
uvI++;
}
}
for (int j = 0; j < section.indicies.Count; j++)
{
if (j % 3 == 0)
{
fbxMesh.EndPolygon();
fbxMesh.BeginPolygon(i);
}
fbxMesh.AddPolygon(VertexOffset + section.indicies[j]);
}
fbxMesh.EndPolygon();
VertexOffset = VertexOffset + section.vertices.Count;
lMeshNode.AddMaterial(pScene, section.matName);
}
return(lMeshNode);
}
