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