diff options
Diffstat (limited to 'src/mesh/assimp-master/code/AssetLib/Blender/BlenderCustomData.cpp')
-rw-r--r-- | src/mesh/assimp-master/code/AssetLib/Blender/BlenderCustomData.cpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/mesh/assimp-master/code/AssetLib/Blender/BlenderCustomData.cpp b/src/mesh/assimp-master/code/AssetLib/Blender/BlenderCustomData.cpp new file mode 100644 index 0000000..c74a6bb --- /dev/null +++ b/src/mesh/assimp-master/code/AssetLib/Blender/BlenderCustomData.cpp @@ -0,0 +1,181 @@ +#include "BlenderCustomData.h" +#include "BlenderDNA.h" +#include <array> +#include <functional> + +namespace Assimp { +namespace Blender { +/** + * @brief read/convert of Structure array to memory + */ +template <typename T> +bool read(const Structure &s, T *p, const size_t cnt, const FileDatabase &db) { + for (size_t i = 0; i < cnt; ++i) { + T read; + s.Convert(read, db); + *p = read; + p++; + } + return true; +} + +/** + * @brief pointer to function read memory for n CustomData types + */ +typedef bool (*PRead)(ElemBase *pOut, const size_t cnt, const FileDatabase &db); +typedef ElemBase *(*PCreate)(const size_t cnt); +typedef void (*PDestroy)(ElemBase *); + +#define IMPL_STRUCT_READ(ty) \ + bool read##ty(ElemBase *v, const size_t cnt, const FileDatabase &db) { \ + ty *ptr = dynamic_cast<ty *>(v); \ + if (nullptr == ptr) { \ + return false; \ + } \ + return read<ty>(db.dna[#ty], ptr, cnt, db); \ + } + +#define IMPL_STRUCT_CREATE(ty) \ + ElemBase *create##ty(const size_t cnt) { \ + return new ty[cnt]; \ + } + +#define IMPL_STRUCT_DESTROY(ty) \ + void destroy##ty(ElemBase *pE) { \ + ty *p = dynamic_cast<ty *>(pE); \ + delete[] p; \ + } + +/** + * @brief helper macro to define Structure functions + */ +#define IMPL_STRUCT(ty) \ + IMPL_STRUCT_READ(ty) \ + IMPL_STRUCT_CREATE(ty) \ + IMPL_STRUCT_DESTROY(ty) + +// supported structures for CustomData +IMPL_STRUCT(MVert) +IMPL_STRUCT(MEdge) +IMPL_STRUCT(MFace) +IMPL_STRUCT(MTFace) +IMPL_STRUCT(MTexPoly) +IMPL_STRUCT(MLoopUV) +IMPL_STRUCT(MLoopCol) +IMPL_STRUCT(MPoly) +IMPL_STRUCT(MLoop) + +/** + * @brief describes the size of data and the read function to be used for single CustomerData.type + */ +struct CustomDataTypeDescription { + PRead Read; ///< function to read one CustomData type element + PCreate Create; ///< function to allocate n type elements + PDestroy Destroy; + + CustomDataTypeDescription(PRead read, PCreate create, PDestroy destroy) : + Read(read), Create(create), Destroy(destroy) {} +}; + +/** + * @brief helper macro to define Structure type specific CustomDataTypeDescription + * @note IMPL_STRUCT_READ for same ty must be used earlier to implement the typespecific read function + */ +#define DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(ty) \ + CustomDataTypeDescription { &read##ty, &create##ty, &destroy##ty } + +/** + * @brief helper macro to define CustomDataTypeDescription for UNSUPPORTED type + */ +#define DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION \ + CustomDataTypeDescription { nullptr, nullptr, nullptr } + +/** + * @brief descriptors for data pointed to from CustomDataLayer.data + * @note some of the CustomData uses already well defined Structures + * other (like CD_ORCO, ...) uses arrays of rawtypes or even arrays of Structures + * use a special readfunction for that cases + */ +std::array<CustomDataTypeDescription, CD_NUMTYPES> customDataTypeDescriptions = { { DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MVert), + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MEdge), + DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MFace), + DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MTFace), + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MTexPoly), + DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MLoopUV), + DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MLoopCol), + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MPoly), + DECL_STRUCT_CUSTOMDATATYPEDESCRIPTION(MLoop), + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION, + DECL_UNSUPPORTED_CUSTOMDATATYPEDESCRIPTION } }; + +bool isValidCustomDataType(const int cdtype) { + return cdtype >= 0 && cdtype < CD_NUMTYPES; +} + +bool readCustomData(std::shared_ptr<ElemBase> &out, const int cdtype, const size_t cnt, const FileDatabase &db) { + if (!isValidCustomDataType(cdtype)) { + throw Error("CustomData.type ", cdtype, " out of index"); + } + + const CustomDataTypeDescription cdtd = customDataTypeDescriptions[cdtype]; + if (cdtd.Read && cdtd.Create && cdtd.Destroy && cnt > 0) { + // allocate cnt elements and parse them from file + out.reset(cdtd.Create(cnt), cdtd.Destroy); + return cdtd.Read(out.get(), cnt, db); + } + return false; +} + +std::shared_ptr<CustomDataLayer> getCustomDataLayer(const CustomData &customdata, const CustomDataType cdtype, const std::string &name) { + for (auto it = customdata.layers.begin(); it != customdata.layers.end(); ++it) { + if (it->get()->type == cdtype && name == it->get()->name) { + return *it; + } + } + return nullptr; +} + +const ElemBase *getCustomDataLayerData(const CustomData &customdata, const CustomDataType cdtype, const std::string &name) { + const std::shared_ptr<CustomDataLayer> pLayer = getCustomDataLayer(customdata, cdtype, name); + if (pLayer && pLayer->data) { + return pLayer->data.get(); + } + return nullptr; +} +} // namespace Blender +} // namespace Assimp |