add assimp submodule

1 files changed, 200 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/FBX/FBXImporter.cpp b/src/mesh/assimp-master/code/AssetLib/FBX/FBXImporter.cpp
new file mode 100644
index 0000000..0f63acc
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/FBX/FBXImporter.cpp
@@ -0,0 +1,200 @@
+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, 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() {
+	static auto prefix = "FBX: ";
+	return prefix;
+}
+
+} // namespace Assimp
+
+using namespace Assimp;
+using namespace Assimp::Formatter;
+using namespace Assimp::FBX;
+
+namespace {
+
+static const aiImporterDesc desc = {
+	"Autodesk FBX Importer",
+	"",
+	"",
+	"",
+	aiImporterFlags_SupportTextFlavour,
+	0,
+	0,
+	0,
+	0,
+	"fbx"
+};
+}
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by #Importer
+FBXImporter::FBXImporter() {
+}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+FBXImporter::~FBXImporter() {
+}
+
+// ------------------------------------------------------------------------------------------------
+// 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[] = { "fbx" };
+	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) {
+	settings.readAllLayers = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_GEOMETRY_LAYERS, true);
+	settings.readAllMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ALL_MATERIALS, false);
+	settings.readMaterials = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_MATERIALS, true);
+	settings.readTextures = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_TEXTURES, true);
+	settings.readCameras = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_CAMERAS, true);
+	settings.readLights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_LIGHTS, true);
+	settings.readAnimations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_ANIMATIONS, true);
+	settings.readWeights = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_READ_WEIGHTS, true);
+	settings.strictMode = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_STRICT_MODE, false);
+	settings.preservePivots = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_PRESERVE_PIVOTS, true);
+	settings.optimizeEmptyAnimationCurves = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_OPTIMIZE_EMPTY_ANIMATION_CURVES, true);
+	settings.useLegacyEmbeddedTextureNaming = pImp->GetPropertyBool(AI_CONFIG_IMPORT_FBX_EMBEDDED_TEXTURES_LEGACY_NAMING, false);
+	settings.removeEmptyBones = pImp->GetPropertyBool(AI_CONFIG_IMPORT_REMOVE_EMPTY_BONES, true);
+	settings.convertToMeters = pImp->GetPropertyBool(AI_CONFIG_FBX_CONVERT_TO_M, 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();
+
+	// broadphase tokenizing pass in which we identify the core
+	// syntax elements of FBX (brackets, commas, key:value mappings)
+	TokenList tokens;
+	try {
+
+		bool is_binary = false;
+		if (!strncmp(begin, "Kaydara FBX Binary", 18)) {
+			is_binary = true;
+			TokenizeBinary(tokens, begin, contents.size());
+		} else {
+			Tokenize(tokens, begin);
+		}
+
+		// use this information to construct a very rudimentary
+		// parse-tree representing the FBX scope structure
+		Parser parser(tokens, is_binary);
+
+		// take the raw parse-tree and convert it to a FBX DOM
+		Document doc(parser, settings);
+
+		// convert the FBX DOM to aiScene
+		ConvertToAssimpScene(pScene, doc, settings.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);
+
+		std::for_each(tokens.begin(), tokens.end(), Util::delete_fun<Token>());
+	} catch (std::exception &) {
+		std::for_each(tokens.begin(), tokens.end(), Util::delete_fun<Token>());
+		throw;
+	}
+}
+
+#endif // !ASSIMP_BUILD_NO_FBX_IMPORTER