192 lines
7.5 KiB
C++
192 lines
7.5 KiB
C++
/*
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Open Asset Import Library (assimp)
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----------------------------------------------------------------------
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Copyright (c) 2006-2024, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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r
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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/** @file FBXImporter.cpp
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* @brief Implementation of the FBX importer.
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*/
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#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER
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#include "FBXImporter.h"
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#include "FBXConverter.h"
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#include "FBXDocument.h"
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#include "FBXParser.h"
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#include "FBXTokenizer.h"
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#include "FBXUtil.h"
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#include <assimp/MemoryIOWrapper.h>
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#include <assimp/StreamReader.h>
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#include <assimp/importerdesc.h>
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#include <assimp/Importer.hpp>
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namespace Assimp {
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template <>
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const char *LogFunctions<FBXImporter>::Prefix() {
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return "FBX: ";
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}
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} // namespace Assimp
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using namespace Assimp;
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using namespace Assimp::Formatter;
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using namespace Assimp::FBX;
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namespace {
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static constexpr aiImporterDesc desc = {
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"Autodesk FBX Importer",
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"",
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"",
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"",
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aiImporterFlags_SupportTextFlavour,
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0,
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0,
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0,
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0,
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"fbx"
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};
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}
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// ------------------------------------------------------------------------------------------------
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// Returns whether the class can handle the format of the given file.
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bool FBXImporter::CanRead(const std::string & pFile, IOSystem * pIOHandler, bool /*checkSig*/) const {
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// at least ASCII-FBX files usually have a 'FBX' somewhere in their head
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static const char *tokens[] = { " \n\r\n " };
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return SearchFileHeaderForToken(pIOHandler, pFile, tokens, AI_COUNT_OF(tokens));
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}
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// ------------------------------------------------------------------------------------------------
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// List all extensions handled by this loader
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const aiImporterDesc *FBXImporter::GetInfo() const {
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return &desc;
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}
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// ------------------------------------------------------------------------------------------------
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// Setup configuration properties for the loader
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void FBXImporter::SetupProperties(const Importer *pImp) {
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mSettings.readAllLayers = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_GEOMETRY_LAYERS, true);
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mSettings.readAllMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_MATERIALS, false);
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mSettings.readMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_MATERIALS, true);
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mSettings.readTextures = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_TEXTURES, true);
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mSettings.readCameras = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_CAMERAS, true);
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mSettings.readLights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_LIGHTS, true);
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mSettings.readAnimations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ANIMATIONS, true);
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mSettings.readWeights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_WEIGHTS, true);
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mSettings.strictMode = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_STRICT_MODE, false);
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mSettings.preservePivots = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_PRESERVE_PIVOTS, true);
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mSettings.optimizeEmptyAnimationCurves = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_OPTIMIZE_EMPTY_ANIMATION_CURVES, true);
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mSettings.useLegacyEmbeddedTextureNaming = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_EMBEDDED_TEXTURES_LEGACY_NAMING, false);
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mSettings.removeEmptyBones = pImp->GetPropertyBool(AI_CONFIG_IMPORT_REMOVE_EMPTY_BONES, true);
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mSettings.convertToMeters = pImp->GetPropertyBool(AI_CONFIG_FBX_CONVERT_TO_M, false);
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mSettings.ignoreUpDirection = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_IGNORE_UP_DIRECTION, false);
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mSettings.useSkeleton = pImp->GetPropertyBool(AI_CONFIG_FBX_USE_SKELETON_BONE_CONTAINER, false);
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}
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// ------------------------------------------------------------------------------------------------
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// Imports the given file into the given scene structure.
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void FBXImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
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auto streamCloser = [&](IOStream *pStream) {
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pIOHandler->Close(pStream);
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};
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std::unique_ptr<IOStream, decltype(streamCloser)> stream(pIOHandler->Open(pFile, "rb"), streamCloser);
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if (!stream) {
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ThrowException("Could not open file for reading");
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}
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ASSIMP_LOG_DEBUG("Reading FBX file");
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// read entire file into memory - no streaming for this, fbx
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// files can grow large, but the assimp output data structure
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// then becomes very large, too. Assimp doesn't support
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// streaming for its output data structures so the net win with
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// streaming input data would be very low.
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std::vector<char> contents;
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contents.resize(stream->FileSize() + 1);
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stream->Read(&*contents.begin(), 1, contents.size() - 1);
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contents[contents.size() - 1] = 0;
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const char *const begin = &*contents.begin();
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// broad-phase tokenized pass in which we identify the core
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// syntax elements of FBX (brackets, commas, key:value mappings)
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TokenList tokens;
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Assimp::StackAllocator tempAllocator;
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try {
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bool is_binary = false;
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if (!strncmp(begin, "Kaydara FBX Binary", 18)) {
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is_binary = true;
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TokenizeBinary(tokens, begin, contents.size(), tempAllocator);
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} else {
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Tokenize(tokens, begin, tempAllocator);
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}
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// use this information to construct a very rudimentary
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// parse-tree representing the FBX scope structure
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Parser parser(tokens, tempAllocator, is_binary);
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// take the raw parse-tree and convert it to a FBX DOM
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Document doc(parser, mSettings);
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// convert the FBX DOM to aiScene
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ConvertToAssimpScene(pScene, doc, mSettings.removeEmptyBones);
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// size relative to cm
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float size_relative_to_cm = doc.GlobalSettings().UnitScaleFactor();
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if (size_relative_to_cm == 0.0) {
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// BaseImporter later asserts that fileScale is non-zero.
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ThrowException("The UnitScaleFactor must be non-zero");
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}
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// Set FBX file scale is relative to CM must be converted to M for
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// assimp universal format (M)
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SetFileScale(size_relative_to_cm * 0.01f);
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// This collection does not own the memory for the tokens, but we need to call their d'tor
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std::for_each(tokens.begin(), tokens.end(), Util::destructor_fun<Token>());
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} catch (std::exception &) {
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std::for_each(tokens.begin(), tokens.end(), Util::destructor_fun<Token>());
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throw;
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}
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}
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#endif // !ASSIMP_BUILD_NO_FBX_IMPORTER
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