PyObject *py_ue_skeletal_mesh_register_morph_target(ue_PyUObject *self, PyObject * args)
{
ue_py_check(self);
PyObject *py_morph;
if (!PyArg_ParseTuple(args, "O:skeletal_mesh_register_morph_target", &py_morph))
{
return nullptr;
}
USkeletalMesh *mesh = ue_py_check_type<USkeletalMesh>(self);
if (!mesh)
return PyErr_Format(PyExc_Exception, "uobject is not a SkeletalMesh");
UMorphTarget *morph = ue_py_check_type<UMorphTarget>(py_morph);
if (!morph)
return PyErr_Format(PyExc_Exception, "argument is not a MorphTarget");
#if ENGINE_MINOR_VERSION > 16
if (!morph->HasValidData())
return PyErr_Format(PyExc_Exception, "the MorphTarget has no valid data");
#endif
mesh->PreEditChange(nullptr);
mesh->RegisterMorphTarget(morph);
mesh->PostEditChange();
mesh->MarkPackageDirty();
Py_RETURN_NONE;
}
PyObject *py_ue_skeletal_mesh_build_lod(ue_PyUObject *self, PyObject * args, PyObject * kwargs)
{
ue_py_check(self);
PyObject *py_ss_vertex;
int lod_index = 0;
PyObject *py_compute_normals = nullptr;
PyObject *py_compute_tangents = nullptr;
PyObject *py_use_mikk = nullptr;
static char *kw_names[] = { (char *)"soft_vertices", (char *)"lod", (char *)"compute_normals", (char *)"compute_tangents", (char *)"use_mikk", nullptr };
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|iOOO:skeletal_mesh_build_lod", kw_names, &py_ss_vertex, &lod_index, &py_compute_normals, &py_compute_tangents, &py_use_mikk))
{
return nullptr;
}
USkeletalMesh *mesh = ue_py_check_type<USkeletalMesh>(self);
if (!mesh)
return PyErr_Format(PyExc_Exception, "uobject is not a SkeletalMesh");
#if ENGINE_MINOR_VERSION < 19
FSkeletalMeshResource *resource = mesh->GetImportedResource();
#else
FSkeletalMeshModel *resource = mesh->GetImportedModel();
#endif
if (lod_index < 0 || lod_index > resource->LODModels.Num())
return PyErr_Format(PyExc_Exception, "invalid LOD index, must be between 0 and %d", resource->LODModels.Num());
mesh->PreEditChange(nullptr);
if (lod_index == resource->LODModels.Num())
{
#if ENGINE_MINOR_VERSION < 19
resource->LODModels.Add(new FStaticLODModel());
#else
resource->LODModels.Add(new FSkeletalMeshLODModel());
#endif
mesh->LODInfo.AddZeroed();
}
else
{
// reinitialized already existent LOD
#if ENGINE_MINOR_VERSION < 19
new(&resource->LODModels[lod_index]) FStaticLODModel();
#else
new(&resource->LODModels[lod_index]) FSkeletalMeshLODModel();
#endif
}
#if ENGINE_MINOR_VERSION < 19
FStaticLODModel& LODModel = resource->LODModels[lod_index];
#else
FSkeletalMeshLODModel& LODModel = resource->LODModels[lod_index];
#endif
mesh->LODInfo[lod_index].LODHysteresis = 0.02;
FSkeletalMeshOptimizationSettings settings;
mesh->LODInfo[lod_index].ReductionSettings = settings;
LODModel.NumTexCoords = 1;
IMeshUtilities & MeshUtilities = FModuleManager::Get().LoadModuleChecked<IMeshUtilities>("MeshUtilities");
PyObject *py_iter = PyObject_GetIter(py_ss_vertex);
if (!py_iter)
{
return PyErr_Format(PyExc_Exception, "argument is not an iterable of FSoftSkinVertex");
}
TArray<FSoftSkinVertex> soft_vertices;
TArray<FVector> points;
TArray<FMeshWedge> wedges;
TArray<FMeshFace> faces;
TArray<FVertInfluence> influences;
TArray<int32> points_to_map;
TArray<FVector> tangentsX;
TArray<FVector> tangentsY;
TArray<FVector> tangentsZ;
TArray<uint16> material_indices;
TArray<uint32> smoothing_groups;
while (PyObject *py_item = PyIter_Next(py_iter))
{
ue_PyFSoftSkinVertex *ss_vertex = py_ue_is_fsoft_skin_vertex(py_item);
if (!ss_vertex)
{
Py_DECREF(py_iter);
return PyErr_Format(PyExc_Exception, "argument is not an iterable of FSoftSkinVertex");
}
int32 vertex_index = points.Add(ss_vertex->ss_vertex.Position);
points_to_map.Add(vertex_index);
FMeshWedge wedge;
wedge.iVertex = vertex_index;
wedge.Color = ss_vertex->ss_vertex.Color;
for (int32 i = 0; i < MAX_TEXCOORDS; i++)
{
wedge.UVs[i] = ss_vertex->ss_vertex.UVs[i];
}
int32 wedge_index = wedges.Add(wedge);
for (int32 i = 0; i < MAX_TOTAL_INFLUENCES; i++)
{
FVertInfluence influence;
influence.VertIndex = wedge_index;
influence.BoneIndex = ss_vertex->ss_vertex.InfluenceBones[i];
influence.Weight = ss_vertex->ss_vertex.InfluenceWeights[i] / 255.f;
influences.Add(influence);
}
tangentsX.Add(ss_vertex->ss_vertex.TangentX);
tangentsY.Add(ss_vertex->ss_vertex.TangentY);
tangentsZ.Add(ss_vertex->ss_vertex.TangentZ);
material_indices.Add(ss_vertex->material_index);
smoothing_groups.Add(ss_vertex->smoothing_group);
}
Py_DECREF(py_iter);
if (wedges.Num() % 3 != 0)
return PyErr_Format(PyExc_Exception, "invalid number of FSoftSkinVertex, must be a multiple of 3");
for (int32 i = 0; i < wedges.Num(); i += 3)
{
FMeshFace face;
face.iWedge[0] = i;
face.iWedge[1] = i + 1;
face.iWedge[2] = i + 2;
face.MeshMaterialIndex = material_indices[i];
face.SmoothingGroups = smoothing_groups[i];
face.TangentX[0] = tangentsX[i];
face.TangentX[1] = tangentsX[i + 1];
face.TangentX[2] = tangentsX[i + 2];
face.TangentY[0] = tangentsY[i];
face.TangentY[1] = tangentsY[i + 1];
face.TangentY[2] = tangentsY[i + 2];
face.TangentZ[0] = tangentsZ[i];
face.TangentZ[1] = tangentsZ[i + 1];
face.TangentZ[2] = tangentsZ[i + 2];
faces.Add(face);
}
#if ENGINE_MINOR_VERSION < 19
FStaticLODModel & lod_model = resource->LODModels[lod_index];
#else
FSkeletalMeshLODModel & lod_model = resource->LODModels[lod_index];
#endif
IMeshUtilities::MeshBuildOptions build_settings;
build_settings.bUseMikkTSpace = (py_use_mikk && PyObject_IsTrue(py_use_mikk));
build_settings.bComputeNormals = (py_compute_normals && PyObject_IsTrue(py_compute_normals));
build_settings.bComputeTangents = (py_compute_tangents && PyObject_IsTrue(py_compute_tangents));
build_settings.bRemoveDegenerateTriangles = true;
bool success = MeshUtilities.BuildSkeletalMesh(lod_model, mesh->RefSkeleton, influences, wedges, faces, points, points_to_map, build_settings);
if (!success)
{
return PyErr_Format(PyExc_Exception, "unable to create new Skeletal LOD");
}
#if ENGINE_MINOR_VERSION < 19
for (int32 i = 0; i < lod_model.Sections.Num(); i++)
{
mesh->LODInfo[lod_index].TriangleSortSettings.AddZeroed();
}
#endif
mesh->CalculateRequiredBones(LODModel, mesh->RefSkeleton, nullptr);
mesh->CalculateInvRefMatrices();
mesh->Skeleton->RecreateBoneTree(mesh);
mesh->Skeleton->SetPreviewMesh(mesh);
mesh->Skeleton->PostEditChange();
mesh->Skeleton->MarkPackageDirty();
mesh->PostEditChange();
mesh->MarkPackageDirty();
Py_RETURN_NONE;
}