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@@ -0,0 +1,734 @@
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+/*
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+Open Asset Import Library (assimp)
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+----------------------------------------------------------------------
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+
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+Copyright (c) 2006-2019, assimp team
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+Copyright (c) 2019 bzt
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+
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+All rights reserved.
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+
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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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+
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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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+
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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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+
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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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+
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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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+*/
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+
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+#ifndef ASSIMP_BUILD_NO_M3D_IMPORTER
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+
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+#define M3D_IMPLEMENTATION
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+#define M3D_ASCII
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+
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+#include <assimp/IOStreamBuffer.h>
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+#include <memory>
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+#include <assimp/DefaultIOSystem.h>
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+#include <assimp/Importer.hpp>
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+#include <assimp/scene.h>
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+#include <assimp/ai_assert.h>
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+#include <assimp/DefaultLogger.hpp>
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+#include <assimp/importerdesc.h>
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+#include "M3DImporter.h"
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+#include "M3DMaterials.h"
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+
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+// RESOURCES:
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+// https://gitlab.com/bztsrc/model3d/blob/master/docs/m3d_format.md
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+// https://gitlab.com/bztsrc/model3d/blob/master/docs/a3d_format.md
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+
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+/*
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+ Unfortunately aiNode has bone structures and meshes too, yet we can't assign
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+ the mesh to a bone aiNode as a skin may refer to several aiNodes. Therefore
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+ I've decided to import into this structure:
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+
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+ aiScene->mRootNode
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+ | |->mMeshes (all the meshes)
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+ | \->children (empty if there's no skeleton imported, no meshes)
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+ | \->skeleton root aiNode*
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+ | |->bone aiNode
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+ | | \->subbone aiNode
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+ | |->bone aiNode
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+ | | ...
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+ | \->bone aiNode
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+ \->mMeshes[]
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+ \->aiBone, referencing mesh-less aiNodes from above
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+
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+ * - normally one, but if a model has several skeleton roots, then all of them
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+ are listed in aiScene->mRootNode->children, but all without meshes
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+*/
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+
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+static const aiImporterDesc desc = {
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+ "Model 3D Importer",
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+ "",
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+ "",
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+ "",
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+ aiImporterFlags_SupportBinaryFlavour,
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+ 0,
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+ 0,
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+ 0,
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+ 0,
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+ "m3d a3d"
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+};
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+
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+// workaround: the SDK expects a C callback, but we want to use Assimp::IOSystem to implement that
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+extern "C" {
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+ struct Assimp::IOSystem* m3dimporter_pIOHandler;
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+
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+ unsigned char *m3dimporter_readfile(char *fn, unsigned int *size) {
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+ ai_assert( nullptr != fn );
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+ ai_assert( nullptr != size );
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+ std::string file(fn);
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+ std::unique_ptr<Assimp::IOStream> pStream( m3dimporter_pIOHandler->Open( file, "rb"));
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+ size_t fileSize = pStream->FileSize();
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+ // should be allocated with malloc(), because the library will call free() to deallocate
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+ unsigned char *data = (unsigned char*)malloc(fileSize);
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+ if( !data || !pStream.get() || !fileSize || fileSize != pStream->Read(data,1,fileSize)) {
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+ pStream.reset();
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+ *size = 0;
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+ // don't throw a deadly exception, it's not fatal if we can't read an external asset
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+ return nullptr;
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+ }
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+ pStream.reset();
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+ *size = (int)fileSize;
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+ return data;
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+ }
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+}
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+
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+namespace Assimp {
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+
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+using namespace std;
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+
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+// ------------------------------------------------------------------------------------------------
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+// Default constructor
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+M3DImporter::M3DImporter()
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+: mScene(nullptr)
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+, m3d(nullptr) { }
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+
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+// ------------------------------------------------------------------------------------------------
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+// Destructor.
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+M3DImporter::~M3DImporter() {}
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+
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+// ------------------------------------------------------------------------------------------------
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+// Returns true, if file is a binary or ASCII Model 3D file.
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+bool M3DImporter::CanRead(const std::string& pFile, IOSystem* pIOHandler , bool checkSig) const {
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+ const std::string extension = GetExtension(pFile);
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+
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+ if (extension == "m3d" || extension == "a3d")
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+ return true;
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+ else if (!extension.length() || checkSig) {
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+ if (!pIOHandler) {
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+ return true;
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+ }
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+ /*
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+ * don't use CheckMagicToken because that checks with swapped bytes too, leading to false
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+ * positives. This magic is not uint32_t, but char[4], so memcmp is the best way
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+
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+ const char* tokens[] = {"3DMO", "3dmo"};
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+ return CheckMagicToken(pIOHandler,pFile,tokens,2,0,4);
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+ */
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+ std::unique_ptr<IOStream> pStream (pIOHandler->Open(pFile, "rb"));
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+ unsigned char data[4];
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+ if(4 != pStream->Read(data,1,4)) {
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+ return false;
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+ }
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+ return !memcmp(data, "3DMO", 4) /* bin */ || !memcmp(data, "3dmo", 4) /* ASCII */;
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+ }
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+ return false;
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+}
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+
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+// ------------------------------------------------------------------------------------------------
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+const aiImporterDesc* M3DImporter::GetInfo() const {
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+ return &desc;
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+}
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+
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+// ------------------------------------------------------------------------------------------------
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+// Model 3D import implementation
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+void M3DImporter::InternReadFile( const std::string &file, aiScene* pScene, IOSystem* pIOHandler) {
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+ // Read file into memory
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+ std::unique_ptr<IOStream> pStream( pIOHandler->Open( file, "rb"));
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+ if( !pStream.get() ) {
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+ throw DeadlyImportError( "Failed to open file " + file + "." );
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+ }
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+
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+ // Get the file-size and validate it, throwing an exception when fails
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+ size_t fileSize = pStream->FileSize();
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+ if( fileSize < 8 ) {
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+ throw DeadlyImportError( "M3D-file " + file + " is too small." );
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+ }
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+ unsigned char data[fileSize];
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+ if(fileSize != pStream->Read(data,1,fileSize)) {
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+ throw DeadlyImportError( "Failed to read the file " + file + "." );
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+ }
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+
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+ // Get the path for external assets
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+ std::string folderName( "./" );
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+ std::string::size_type pos = file.find_last_of( "\\/" );
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+ if ( pos != std::string::npos ) {
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+ folderName = file.substr( 0, pos );
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+ if ( !folderName.empty() ) {
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+ pIOHandler->PushDirectory( folderName );
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+ }
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+ }
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+ // pass this IOHandler to the C callback
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+ m3dimporter_pIOHandler = pIOHandler;
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+
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+ //DefaultLogger::create("/dev/stderr", Logger::VERBOSE);
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+ ASSIMP_LOG_DEBUG_F("M3D: loading ", file);
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+
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+ // let the C SDK do the hard work for us
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+ m3d = m3d_load(&data[0], m3dimporter_readfile, free, nullptr);
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+ m3dimporter_pIOHandler = nullptr;
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+ if( !m3d ) {
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+ throw DeadlyImportError( "Unable to parse " + file + " as M3D." );
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+ }
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+
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+ // create the root node
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+ pScene->mRootNode = new aiNode;
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+ pScene->mRootNode->mName = aiString(std::string(std::string(m3d->name)));
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+ pScene->mRootNode->mTransformation = aiMatrix4x4();
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+ pScene->mRootNode->mNumChildren = 0;
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+ mScene = pScene;
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+
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+ ASSIMP_LOG_DEBUG("M3D: root node " + std::string(m3d->name));
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+
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+ // now we just have to fill up the Assimp structures in pScene
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+ importMaterials();
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+ importTextures();
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+ importBones(-1U, pScene->mRootNode);
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+ importMeshes();
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+ importAnimations();
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+
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+ // we don't need the SDK's version any more
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+ m3d_free(m3d);
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+
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+ // Pop directory stack
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+ if ( pIOHandler->StackSize() > 0 ) {
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+ pIOHandler->PopDirectory();
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+ }
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+}
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+
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+// ------------------------------------------------------------------------------------------------
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+// convert materials. properties are converted using a static table in M3DMaterials.h
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+void M3DImporter::importMaterials()
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+{
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+ unsigned int i, j, k, l, n;
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+ m3dm_t *m;
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+ aiString name = aiString(AI_DEFAULT_MATERIAL_NAME);
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+ aiColor4D c;
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+ ai_real f;
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+
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+ ai_assert(mScene != nullptr);
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+ ai_assert(m3d != nullptr);
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+
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+ mScene->mNumMaterials = m3d->nummaterial + 1;
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+ mScene->mMaterials = new aiMaterial*[ m3d->nummaterial + 1 ];
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+
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+ ASSIMP_LOG_DEBUG_F("M3D: importMaterials ", mScene->mNumMaterials);
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+
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+ // add a default material as first
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+ aiMaterial* mat = new aiMaterial;
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+ mat->AddProperty( &name, AI_MATKEY_NAME );
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+ c.a = 1.0; c.b = c.g = c.r = 0.6;
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+ mat->AddProperty( &c, 1, AI_MATKEY_COLOR_DIFFUSE);
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+ mScene->mMaterials[0] = mat;
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+
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+ for(i = 0; i < m3d->nummaterial; i++) {
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+ m = &m3d->material[i];
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+ aiMaterial* mat = new aiMaterial;
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+ name.Set(std::string(m->name));
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+ mat->AddProperty( &name, AI_MATKEY_NAME );
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+ for(j = 0; j < m->numprop; j++) {
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+ // look up property type
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+ // 0 - 127 scalar values,
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+ // 128 - 255 the same properties but for texture maps
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+ k = 256;
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+ for(l = 0; l < sizeof(m3d_propertytypes)/sizeof(m3d_propertytypes[0]); l++)
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+ if(m->prop[j].type == m3d_propertytypes[l].id ||
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+ m->prop[j].type == m3d_propertytypes[l].id + 128) {
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+ k = l;
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+ break;
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+ }
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+ // should never happen, but be safe than sorry
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+ if(k == 256) continue;
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+
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+ // scalar properties
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+ if(m->prop[j].type < 128 && aiProps[k].pKey) {
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+ switch(m3d_propertytypes[k].format) {
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+ case m3dpf_color:
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+ c = mkColor(m->prop[j].value.color);
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+ mat->AddProperty(&c, 1, aiProps[k].pKey, aiProps[k].type, aiProps[k].index);
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+ break;
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+ case m3dpf_float:
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+ f = m->prop[j].value.fnum;
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+ mat->AddProperty(&f, 1, aiProps[k].pKey, aiProps[k].type, aiProps[k].index);
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+ break;
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+ default:
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+ n = m->prop[j].value.num;
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+ if(m->prop[j].type == m3dp_il) {
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+ switch(n) {
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+ case 0: n = aiShadingMode_NoShading; break;
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+ case 2: n = aiShadingMode_Phong; break;
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+ default: n = aiShadingMode_Gouraud; break;
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+ }
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+ }
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+ mat->AddProperty(&n, 1, aiProps[k].pKey, aiProps[k].type, aiProps[k].index);
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+ break;
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+ }
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+ }
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+ // texture map properties
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+ if(m->prop[j].type >= 128 && aiTxProps[k].pKey &&
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+ // extra check, should never happen, do we have the refered texture?
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+ m->prop[j].value.textureid < m3d->numtexture &&
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+ m3d->texture[m->prop[j].value.textureid].name) {
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+ name.Set(std::string(std::string(m3d->texture[m->prop[j].value.textureid].name) + ".png"));
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+ mat->AddProperty(&name, aiProps[k].pKey, aiProps[k].type, aiProps[k].index);
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+ n = 0;
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+ mat->AddProperty(&n, 1, _AI_MATKEY_UVWSRC_BASE, aiProps[k].type, aiProps[k].index);
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+ }
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+ }
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+ mScene->mMaterials[i + 1] = mat;
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+ }
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+}
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+
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+// ------------------------------------------------------------------------------------------------
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+// import textures, this is the simplest of all
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+void M3DImporter::importTextures()
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+{
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+ unsigned int i;
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+ m3dtx_t *t;
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+
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+ ai_assert(mScene != nullptr);
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+ ai_assert(m3d != nullptr);
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+
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+ mScene->mNumTextures = m3d->numtexture;
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+ ASSIMP_LOG_DEBUG_F("M3D: importTextures ", mScene->mNumTextures);
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+
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+ if(!m3d->numtexture)
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+ return;
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+
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+ mScene->mTextures = new aiTexture*[m3d->numtexture];
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+ for(i = 0; i < m3d->numtexture; i++) {
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+ t = &m3d->texture[i];
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+ aiTexture *tx = new aiTexture;
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+ strcpy(tx->achFormatHint, "rgba8888");
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+ tx->mFilename = aiString(std::string(t->name) + ".png");
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+ tx->mWidth = t->w;
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+ tx->mHeight = t->h;
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+ tx->pcData = new aiTexel[ tx->mWidth*tx->mHeight ];
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+ memcpy(tx->pcData, t->d, tx->mWidth*tx->mHeight*4);
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+ mScene->mTextures[i] = tx;
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+ }
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+}
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+
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+// ------------------------------------------------------------------------------------------------
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+// this is tricky. M3D has a global vertex and UV list, and faces are indexing them
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+// individually. In assimp there're per mesh vertex and UV lists, and they must be
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+// indexed simultaneously.
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+void M3DImporter::importMeshes()
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+{
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+ unsigned int i, j, k, l, numpoly = 3, lastMat = -2U;
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+ std::vector<aiMesh*> *meshes = new std::vector<aiMesh*>();
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+ std::vector<aiFace> *faces = nullptr;
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+ std::vector<aiVector3D> *vertices = nullptr;
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+ std::vector<aiVector3D> *normals = nullptr;
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+ std::vector<aiVector3D> *texcoords = nullptr;
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+ std::vector<aiColor4D> *colors = nullptr;
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+ std::vector<unsigned int> *vertexids = nullptr;
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+ aiMesh *pMesh = nullptr;
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+
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+ ai_assert(mScene != nullptr);
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+ ai_assert(m3d != nullptr);
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+ ai_assert(mScene->mRootNode != nullptr);
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+
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+ ASSIMP_LOG_DEBUG_F("M3D: importMeshes ", m3d->numface);
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+
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+ for(i = 0; i < m3d->numface; i++) {
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+ // we must switch mesh if material changes
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+ if(lastMat != m3d->face[i].materialid) {
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+ lastMat = m3d->face[i].materialid;
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+ if(pMesh && vertices->size() && faces->size()) {
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+ populateMesh(pMesh, faces, vertices, normals, texcoords, colors, vertexids);
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+ meshes->push_back(pMesh);
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+ delete vertexids; // this is not stored in pMesh, just to collect bone vertices
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+ }
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+ pMesh = new aiMesh;
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+ pMesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
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+ pMesh->mMaterialIndex = lastMat + 1;
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+ faces = new std::vector<aiFace>();
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+ vertices = new std::vector<aiVector3D>();
|
|
|
+ normals = new std::vector<aiVector3D>();
|
|
|
+ texcoords = new std::vector<aiVector3D>();
|
|
|
+ colors = new std::vector<aiColor4D>();
|
|
|
+ vertexids = new std::vector<unsigned int>();
|
|
|
+ }
|
|
|
+ // add a face to temporary vector
|
|
|
+ aiFace *pFace = new aiFace;
|
|
|
+ pFace->mNumIndices = numpoly;
|
|
|
+ pFace->mIndices = new unsigned int[numpoly];
|
|
|
+ for(j = 0; j < numpoly; j++) {
|
|
|
+ aiVector3D pos, uv, norm;
|
|
|
+ k = vertices->size();
|
|
|
+ pFace->mIndices[j] = k;
|
|
|
+ l = m3d->face[i].vertex[j];
|
|
|
+ pos.x = m3d->vertex[l].x;
|
|
|
+ pos.y = m3d->vertex[l].y;
|
|
|
+ pos.z = m3d->vertex[l].z;
|
|
|
+ vertices->push_back(pos);
|
|
|
+ colors->push_back(mkColor(m3d->vertex[l].color));
|
|
|
+ // add a bone to temporary vector
|
|
|
+ if(m3d->vertex[l].skinid != -1U &&m3d->vertex[l].skinid != -2U && m3d->skin && m3d->bone) {
|
|
|
+ // this is complicated, because M3D stores a list of bone id / weight pairs per
|
|
|
+ // vertex but assimp uses lists of local vertex id/weight pairs per local bone list
|
|
|
+ vertexids->push_back(l);
|
|
|
+ }
|
|
|
+ l = m3d->face[i].texcoord[j];
|
|
|
+ if(l != -1U) {
|
|
|
+ uv.x = m3d->tmap[l].u;
|
|
|
+ uv.y = m3d->tmap[l].v;
|
|
|
+ uv.z = 0.0;
|
|
|
+ texcoords->push_back(uv);
|
|
|
+ }
|
|
|
+ l = m3d->face[i].normal[j];
|
|
|
+ if(l != -1U) {
|
|
|
+ norm.x = m3d->vertex[l].x;
|
|
|
+ norm.y = m3d->vertex[l].y;
|
|
|
+ norm.z = m3d->vertex[l].z;
|
|
|
+ normals->push_back(norm);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ faces->push_back(*pFace);
|
|
|
+ delete pFace;
|
|
|
+ }
|
|
|
+ // if there's data left in the temporary vectors, flush them
|
|
|
+ if(pMesh && vertices->size() && faces->size()) {
|
|
|
+ populateMesh(pMesh, faces, vertices, normals, texcoords, colors, vertexids);
|
|
|
+ meshes->push_back(pMesh);
|
|
|
+ }
|
|
|
+
|
|
|
+ // create global mesh list in scene
|
|
|
+ mScene->mNumMeshes = meshes->size();
|
|
|
+ mScene->mMeshes = new aiMesh*[mScene->mNumMeshes];
|
|
|
+ std::copy(meshes->begin(), meshes->end(), mScene->mMeshes);
|
|
|
+
|
|
|
+ // create mesh indeces in root node
|
|
|
+ mScene->mRootNode->mNumMeshes = meshes->size();
|
|
|
+ mScene->mRootNode->mMeshes = new unsigned int[meshes->size()];
|
|
|
+ for(i = 0; i < meshes->size(); i++) {
|
|
|
+ mScene->mRootNode->mMeshes[i] = i;
|
|
|
+ }
|
|
|
+
|
|
|
+ delete meshes;
|
|
|
+ if(faces) delete faces;
|
|
|
+ if(vertices) delete vertices;
|
|
|
+ if(normals) delete normals;
|
|
|
+ if(texcoords) delete texcoords;
|
|
|
+ if(colors) delete colors;
|
|
|
+ if(vertexids) delete vertexids;
|
|
|
+}
|
|
|
+
|
|
|
+// ------------------------------------------------------------------------------------------------
|
|
|
+// a reentrant node parser. Otherwise this is simple
|
|
|
+void M3DImporter::importBones(unsigned int parentid, aiNode *pParent)
|
|
|
+{
|
|
|
+ unsigned int i, n;
|
|
|
+
|
|
|
+ ai_assert(pParent != nullptr);
|
|
|
+ ai_assert(mScene != nullptr);
|
|
|
+ ai_assert(m3d != nullptr);
|
|
|
+
|
|
|
+ ASSIMP_LOG_DEBUG_F("M3D: importBones ", m3d->numbone, " parentid ", (int)parentid);
|
|
|
+
|
|
|
+ for(n = 0, i = parentid + 1; i < m3d->numbone; i++)
|
|
|
+ if(m3d->bone[i].parent == parentid) n++;
|
|
|
+ pParent->mChildren = new aiNode*[n];
|
|
|
+
|
|
|
+ for(i = parentid + 1; i < m3d->numbone; i++) {
|
|
|
+ if(m3d->bone[i].parent == parentid) {
|
|
|
+ aiNode *pChild = new aiNode;
|
|
|
+ pChild->mParent = pParent;
|
|
|
+ pChild->mName = aiString(std::string(m3d->bone[i].name));
|
|
|
+ convertPose(&pChild->mTransformation, m3d->bone[i].pos, m3d->bone[i].ori);
|
|
|
+ pChild->mNumChildren = 0;
|
|
|
+ pParent->mChildren[pParent->mNumChildren] = pChild;
|
|
|
+ pParent->mNumChildren++;
|
|
|
+ importBones(i, pChild);
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+// ------------------------------------------------------------------------------------------------
|
|
|
+// this is another headache. M3D stores list of changed bone id/position/orientation triplets and
|
|
|
+// a timestamp per frame, but assimp needs timestamp and lists of position, orientation lists per
|
|
|
+// bone, so we have to convert between the two conceptually different representation forms
|
|
|
+void M3DImporter::importAnimations()
|
|
|
+{
|
|
|
+ unsigned int i, j, k, l, n, pos, ori;
|
|
|
+ double t;
|
|
|
+ m3da_t *a;
|
|
|
+
|
|
|
+ ai_assert(mScene != nullptr);
|
|
|
+ ai_assert(m3d != nullptr);
|
|
|
+
|
|
|
+ mScene->mNumAnimations = m3d->numaction;
|
|
|
+
|
|
|
+ ASSIMP_LOG_DEBUG_F("M3D: importAnimations ", mScene->mNumAnimations);
|
|
|
+
|
|
|
+ if(!m3d->numaction || !m3d->numbone)
|
|
|
+ return;
|
|
|
+
|
|
|
+ mScene->mAnimations = new aiAnimation*[m3d->numaction];
|
|
|
+ for(i = 0; i < m3d->numaction; i++) {
|
|
|
+ a = &m3d->action[i];
|
|
|
+ aiAnimation *pAnim = new aiAnimation;
|
|
|
+ pAnim->mName = aiString(std::string(a->name));
|
|
|
+ pAnim->mDuration = ((double)a->durationmsec) / 10;
|
|
|
+ pAnim->mTicksPerSecond = 100;
|
|
|
+ // now we know how many bones are referenced in this animation
|
|
|
+ pAnim->mNumChannels = m3d->numbone;
|
|
|
+ pAnim->mChannels = new aiNodeAnim*[pAnim->mNumChannels];
|
|
|
+ for(l = 0; l < m3d->numbone; l++) {
|
|
|
+ pAnim->mChannels[l] = new aiNodeAnim;
|
|
|
+ pAnim->mChannels[l]->mNodeName = aiString(std::string(m3d->bone[l].name));
|
|
|
+ // now n is the size of positions / orientations arrays
|
|
|
+ pAnim->mChannels[l]->mNumPositionKeys = pAnim->mChannels[l]->mNumRotationKeys = a->numframe;
|
|
|
+ pAnim->mChannels[l]->mPositionKeys = new aiVectorKey[a->numframe];
|
|
|
+ pAnim->mChannels[l]->mRotationKeys = new aiQuatKey[a->numframe];
|
|
|
+ pos = m3d->bone[l].pos;
|
|
|
+ ori = m3d->bone[l].ori;
|
|
|
+ for(j = n = 0; j < a->numframe; j++) {
|
|
|
+ t = ((double)a->frame[j].msec) / 10;
|
|
|
+ for(k = 0; k < a->frame[j].numtransform; k++) {
|
|
|
+ if(a->frame[j].transform[k].boneid == l) {
|
|
|
+ pos = a->frame[j].transform[k].pos;
|
|
|
+ ori = a->frame[j].transform[k].ori;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ m3dv_t *v = &m3d->vertex[pos];
|
|
|
+ m3dv_t *q = &m3d->vertex[ori];
|
|
|
+ pAnim->mChannels[l]->mPositionKeys[j].mTime = t;
|
|
|
+ pAnim->mChannels[l]->mPositionKeys[j].mValue.x = v->x;
|
|
|
+ pAnim->mChannels[l]->mPositionKeys[j].mValue.y = v->y;
|
|
|
+ pAnim->mChannels[l]->mPositionKeys[j].mValue.z = v->z;
|
|
|
+ pAnim->mChannels[l]->mRotationKeys[j].mTime = t;
|
|
|
+ pAnim->mChannels[l]->mRotationKeys[j].mValue.w = q->w;
|
|
|
+ pAnim->mChannels[l]->mRotationKeys[j].mValue.x = q->x;
|
|
|
+ pAnim->mChannels[l]->mRotationKeys[j].mValue.y = q->y;
|
|
|
+ pAnim->mChannels[l]->mRotationKeys[j].mValue.z = q->z;
|
|
|
+ }// foreach frame
|
|
|
+ }// foreach bones
|
|
|
+ mScene->mAnimations[i] = pAnim;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+// ------------------------------------------------------------------------------------------------
|
|
|
+// convert uint32_t into aiColor4D
|
|
|
+aiColor4D M3DImporter::mkColor(uint32_t c) {
|
|
|
+ aiColor4D color;
|
|
|
+ color.a = ((float)((c >> 24)&0xff)) / 255;
|
|
|
+ color.b = ((float)((c >> 16)&0xff)) / 255;
|
|
|
+ color.g = ((float)((c >> 8)&0xff)) / 255;
|
|
|
+ color.r = ((float)((c >> 0)&0xff)) / 255;
|
|
|
+ return color;
|
|
|
+}
|
|
|
+
|
|
|
+// ------------------------------------------------------------------------------------------------
|
|
|
+// convert a position id and orientation id into a 4 x 4 transformation matrix
|
|
|
+void M3DImporter::convertPose(aiMatrix4x4 *m, unsigned int posid, unsigned int orientid)
|
|
|
+{
|
|
|
+ ai_assert(m != nullptr);
|
|
|
+ ai_assert(m3d != nullptr);
|
|
|
+ ai_assert(posid != -1U && posid < m3d->numvertex);
|
|
|
+ ai_assert(orientid != -1U && orientid < m3d->numvertex);
|
|
|
+ m3dv_t *p = &m3d->vertex[posid];
|
|
|
+ m3dv_t *q = &m3d->vertex[orientid];
|
|
|
+
|
|
|
+ /* quaternion to matrix. Do NOT use aiQuaternion to aiMatrix3x3, gives bad results */
|
|
|
+ if(q->x == 0.0 && q->y == 0.0 && q->z >= 0.7071065 && q->z <= 0.7071075 && q->w == 0.0) {
|
|
|
+ m->a2 = m->a3 = m->b1 = m->b3 = m->c1 = m->c2 = 0.0;
|
|
|
+ m->a1 = m->b2 = m->c3 = -1.0;
|
|
|
+ } else {
|
|
|
+ m->a1 = 1 - 2 * (q->y * q->y + q->z * q->z); if(m->a1 > -1e-7 && m->a1 < 1e-7) m->a1 = 0.0;
|
|
|
+ m->a2 = 2 * (q->x * q->y - q->z * q->w); if(m->a2 > -1e-7 && m->a2 < 1e-7) m->a2 = 0.0;
|
|
|
+ m->a3 = 2 * (q->x * q->z + q->y * q->w); if(m->a3 > -1e-7 && m->a3 < 1e-7) m->a3 = 0.0;
|
|
|
+ m->b1 = 2 * (q->x * q->y + q->z * q->w); if(m->b1 > -1e-7 && m->b1 < 1e-7) m->b1 = 0.0;
|
|
|
+ m->b2 = 1 - 2 * (q->x * q->x + q->z * q->z); if(m->b2 > -1e-7 && m->b2 < 1e-7) m->b2 = 0.0;
|
|
|
+ m->b3 = 2 * (q->y * q->z - q->x * q->w); if(m->b3 > -1e-7 && m->b3 < 1e-7) m->b3 = 0.0;
|
|
|
+ m->c1 = 2 * (q->x * q->z - q->y * q->w); if(m->c1 > -1e-7 && m->c1 < 1e-7) m->c1 = 0.0;
|
|
|
+ m->c2 = 2 * (q->y * q->z + q->x * q->w); if(m->c2 > -1e-7 && m->c2 < 1e-7) m->c2 = 0.0;
|
|
|
+ m->c3 = 1 - 2 * (q->x * q->x + q->y * q->y); if(m->c3 > -1e-7 && m->c3 < 1e-7) m->c3 = 0.0;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* set translation */
|
|
|
+ m->a4 = p->x; m->b4 = p->y; m->c4 = p->z;
|
|
|
+
|
|
|
+ m->d1 = 0; m->d2 = 0; m->d3 = 0; m->d4 = 1;
|
|
|
+}
|
|
|
+
|
|
|
+// ------------------------------------------------------------------------------------------------
|
|
|
+// find a node by name
|
|
|
+aiNode *M3DImporter::findNode(aiNode *pNode, aiString name)
|
|
|
+{
|
|
|
+ unsigned int i;
|
|
|
+
|
|
|
+ ai_assert(pNode != nullptr);
|
|
|
+ ai_assert(mScene != nullptr);
|
|
|
+
|
|
|
+ if(pNode->mName == name)
|
|
|
+ return pNode;
|
|
|
+ for(i = 0; i < pNode->mNumChildren; i++) {
|
|
|
+ aiNode *pChild = findNode(pNode->mChildren[i], name);
|
|
|
+ if(pChild) return pChild;
|
|
|
+ }
|
|
|
+ return nullptr;
|
|
|
+}
|
|
|
+
|
|
|
+// ------------------------------------------------------------------------------------------------
|
|
|
+// fills up offsetmatrix in mBones
|
|
|
+void M3DImporter::calculateOffsetMatrix(aiNode *pNode, aiMatrix4x4 *m)
|
|
|
+{
|
|
|
+ ai_assert(pNode != nullptr);
|
|
|
+ ai_assert(mScene != nullptr);
|
|
|
+
|
|
|
+ if(pNode->mParent) {
|
|
|
+ calculateOffsetMatrix(pNode->mParent, m);
|
|
|
+ *m *= pNode->mTransformation;
|
|
|
+ } else {
|
|
|
+ *m = pNode->mTransformation;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+// ------------------------------------------------------------------------------------------------
|
|
|
+// because M3D has a global mesh, global vertex ids and stores materialid on the face, we need
|
|
|
+// temporary lists to collect data for an aiMesh, which requires local arrays and local indeces
|
|
|
+// this function fills up an aiMesh with those temporary lists
|
|
|
+void M3DImporter::populateMesh(aiMesh *pMesh, std::vector<aiFace> *faces, std::vector<aiVector3D> *vertices,
|
|
|
+ std::vector<aiVector3D> *normals, std::vector<aiVector3D> *texcoords, std::vector<aiColor4D> *colors,
|
|
|
+ std::vector<unsigned int> *vertexids) {
|
|
|
+ unsigned int i, j, k, s;
|
|
|
+ aiNode *pNode;
|
|
|
+
|
|
|
+ ai_assert(pMesh != nullptr);
|
|
|
+ ai_assert(faces != nullptr);
|
|
|
+ ai_assert(vertices != nullptr);
|
|
|
+ ai_assert(normals != nullptr);
|
|
|
+ ai_assert(texcoords != nullptr);
|
|
|
+ ai_assert(colors != nullptr);
|
|
|
+ ai_assert(vertexids != nullptr);
|
|
|
+ ai_assert(m3d != nullptr);
|
|
|
+
|
|
|
+ ASSIMP_LOG_DEBUG_F("M3D: populateMesh numvertices ", vertices->size(), " numfaces ", faces->size(),
|
|
|
+ " numnormals ", normals->size(), " numtexcoord ", texcoords->size(), " numbones ", m3d->numbone);
|
|
|
+
|
|
|
+ if(vertices->size() && faces->size()) {
|
|
|
+ pMesh->mNumFaces = faces->size();
|
|
|
+ pMesh->mFaces = new aiFace[pMesh->mNumFaces];
|
|
|
+ std::copy(faces->begin(), faces->end(), pMesh->mFaces);
|
|
|
+ pMesh->mNumVertices = vertices->size();
|
|
|
+ pMesh->mVertices = new aiVector3D[pMesh->mNumVertices];
|
|
|
+ std::copy(vertices->begin(), vertices->end(), pMesh->mVertices);
|
|
|
+ if(normals->size() == vertices->size()) {
|
|
|
+ pMesh->mNormals = new aiVector3D[pMesh->mNumVertices];
|
|
|
+ std::copy(normals->begin(), normals->end(), pMesh->mNormals);
|
|
|
+ }
|
|
|
+ if(texcoords->size() == vertices->size()) {
|
|
|
+ pMesh->mTextureCoords[0] = new aiVector3D[pMesh->mNumVertices];
|
|
|
+ std::copy(texcoords->begin(), texcoords->end(), pMesh->mTextureCoords[0]);
|
|
|
+ pMesh->mNumUVComponents[0] = 2;
|
|
|
+ }
|
|
|
+ if(colors->size() == vertices->size()) {
|
|
|
+ pMesh->mColors[0] = new aiColor4D[pMesh->mNumVertices];
|
|
|
+ std::copy(colors->begin(), colors->end(), pMesh->mColors[0]);
|
|
|
+ }
|
|
|
+ // this is complicated, because M3D stores a list of bone id / weight pairs per
|
|
|
+ // vertex but assimp uses lists of local vertex id/weight pairs per local bone list
|
|
|
+ pMesh->mNumBones = m3d->numbone;
|
|
|
+ /* we need aiBone with mOffsetMatrix for bones without weights as well */
|
|
|
+ if(pMesh->mNumBones) {
|
|
|
+ pMesh->mBones = new aiBone*[pMesh->mNumBones];
|
|
|
+ for(i = 0; i < m3d->numbone; i++) {
|
|
|
+ pMesh->mBones[i] = new aiBone;
|
|
|
+ pMesh->mBones[i]->mName = aiString(std::string(m3d->bone[i].name));
|
|
|
+ pMesh->mBones[i]->mNumWeights = 0;
|
|
|
+ pNode = findNode(mScene->mRootNode, pMesh->mBones[i]->mName);
|
|
|
+ if(pNode) {
|
|
|
+ calculateOffsetMatrix(pNode, &pMesh->mBones[i]->mOffsetMatrix);
|
|
|
+ pMesh->mBones[i]->mOffsetMatrix.Inverse();
|
|
|
+ } else
|
|
|
+ pMesh->mBones[i]->mOffsetMatrix = aiMatrix4x4();
|
|
|
+ }
|
|
|
+ if(vertexids->size()) {
|
|
|
+ // first count how many vertices we have per bone
|
|
|
+ for(i = 0; i < vertexids->size(); i++) {
|
|
|
+ s = m3d->vertex[vertexids->at(i)].skinid;
|
|
|
+ if(s != -1U && s!= -2U) {
|
|
|
+ for(k = 0; k < M3D_NUMBONE && m3d->skin[s].weight[k] > 0.0; k++) {
|
|
|
+ aiString name = aiString(std::string(m3d->bone[m3d->skin[s].boneid[k]].name));
|
|
|
+ for(j = 0; j < pMesh->mNumBones; j++) {
|
|
|
+ if(pMesh->mBones[j]->mName == name) {
|
|
|
+ pMesh->mBones[j]->mNumWeights++;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // allocate mWeights
|
|
|
+ for(j = 0; j < pMesh->mNumBones; j++) {
|
|
|
+ aiBone *pBone = pMesh->mBones[j];
|
|
|
+ if(pBone->mNumWeights) {
|
|
|
+ pBone->mWeights = new aiVertexWeight[pBone->mNumWeights];
|
|
|
+ pBone->mNumWeights = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // fill up with data
|
|
|
+ for(i = 0; i < vertexids->size(); i++) {
|
|
|
+ s = m3d->vertex[vertexids->at(i)].skinid;
|
|
|
+ if(s != -1U && s!= -2U) {
|
|
|
+ for(k = 0; k < M3D_NUMBONE && m3d->skin[s].weight[k] > 0.0; k++) {
|
|
|
+ aiString name = aiString(std::string(m3d->bone[m3d->skin[s].boneid[k]].name));
|
|
|
+ for(j = 0; j < pMesh->mNumBones; j++) {
|
|
|
+ if(pMesh->mBones[j]->mName == name) {
|
|
|
+ aiBone *pBone = pMesh->mBones[j];
|
|
|
+ pBone->mWeights[pBone->mNumWeights].mVertexId = i;
|
|
|
+ pBone->mWeights[pBone->mNumWeights].mWeight = m3d->skin[s].weight[k];
|
|
|
+ pBone->mNumWeights++;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } // foreach skin
|
|
|
+ }
|
|
|
+ } // foreach vertexids
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+// ------------------------------------------------------------------------------------------------
|
|
|
+
|
|
|
+} // Namespace Assimp
|
|
|
+
|
|
|
+#endif // !! ASSIMP_BUILD_NO_M3D_IMPORTER
|
bzt