83 lines
2.5 KiB
Markdown
83 lines
2.5 KiB
Markdown
## 自定义Asset
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https://zhuanlan.zhihu.com/p/77812246
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- FAssetTypeActions_Base：是对已经创建好的资源操作函数的封装。这个资源在内容浏览器中的颜色，类型名字，显示的缩略图。
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- UFactory：这个是创建自定义类型文件的入口。以及创建资源的二级菜单。
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- UBlueprint: 创建继承类，来实现一个新的视图编辑窗口
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- UXXXX : Public Object ： 这里面存储我们要编辑的数据
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VRM中对应类为：
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- FAssetTypeActions_VrmAssetList、UVrmAssetListThumbnailRenderer
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- UVRM4UImporterFactory
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- UVrmAssetListObject
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## Assimp
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资源工厂类中：UVRM4UImporterFactory::FactoryCreateBinary
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```
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{
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const UVrmRuntimeSettings* Settings = GetDefault<UVrmRuntimeSettings>();
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{
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FSoftObjectPath r = Settings->AssetListObject; //(TEXT("/VRM4U/VrmObjectListBP.VrmObjectListBP"));
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UObject *u = r.TryLoad();
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if (u) {
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if (Cast<UBlueprint>(u)) {
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c = (UClass*)(Cast<UBlueprint>(u)->GeneratedClass);
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}
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}
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}
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if (c == nullptr) {
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FSoftObjectPath r(TEXT("/VRM4U/VrmAssetListObjectBP.VrmAssetListObjectBP"));
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UObject *u = r.TryLoad();
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if (u) {
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c = (UClass*)(Cast<UBlueprint>(u)->GeneratedClass);
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}
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}
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if (c == nullptr) {
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c = UVrmAssetListObject::StaticClass();
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}
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m = NewObject<UVrmAssetListObject>((UObject*)GetTransientPackage(), c.Get());
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}
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UVrmAssetListObject* mret = nullptr;
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if (m) {
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//auto a = NewObject<UVrmAssetListObject>(MatClass.Object, NAME_None, RF_Transactional);
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//MatClass.Object;
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//ULoaderBPFunctionLibrary::LoadVRMFile(nullptr, fullFileName);
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GWarn->BeginSlowTask( NSLOCTEXT("UnrealEd", "ImportVRM", "Importing VRM"), true );
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int ret = true;
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auto &g = VRMConverter::Options::Get();
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g.SetVrmOption(ImportUI->GenerateOptionData());
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ULoaderBPFunctionLibrary::SetImportMode(true, Cast<UPackage>(InParent));
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{
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ret = ULoaderBPFunctionLibrary::LoadVRMFileLocal(m.Get(), mret, fullFileName);
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}
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}
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```
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蓝图函数库中：bool ULoaderBPFunctionLibrary::LoadVRMFileFromMemory()。
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```
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Assimp::Importer mImporter;
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const aiScene* mScenePtr = nullptr; // delete by Assimp::Importer::~Importer
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mScenePtr = mImporter.ReadFileFromMemory(pFileDataData, dataSize,
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aiProcess_Triangulate | aiProcess_MakeLeftHanded | aiProcess_CalcTangentSpace | aiProcess_GenSmoothNormals | aiProcess_OptimizeMeshes,
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e.c_str());
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if (mScenePtr == nullptr) {
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std::string file;
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file = utf_16_to_shift_jis(*filepath);
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mScenePtr = mImporter.ReadFile(file, aiProcess_Triangulate | aiProcess_MakeLeftHanded | aiProcess_CalcTangentSpace | aiProcess_GenSmoothNormals | aiProcess_OptimizeMeshes);
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}
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``` |