747 lines
30 KiB
C++
747 lines
30 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2022, 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 following
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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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* 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 MD5Loader.cpp
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* @brief Implementation of the MD5 importer class
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*/
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#ifndef ASSIMP_BUILD_NO_MD5_IMPORTER
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// internal headers
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#include "MD5Loader.h"
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#include <assimp/MathFunctions.h>
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#include <assimp/RemoveComments.h>
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#include <assimp/SkeletonMeshBuilder.h>
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#include <assimp/StringComparison.h>
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#include <assimp/fast_atof.h>
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#include <assimp/importerdesc.h>
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#include <assimp/scene.h>
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#include <assimp/DefaultLogger.hpp>
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#include <assimp/IOSystem.hpp>
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#include <assimp/Importer.hpp>
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#include <memory>
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using namespace Assimp;
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// Minimum weight value. Weights inside [-n ... n] are ignored
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#define AI_MD5_WEIGHT_EPSILON Math::getEpsilon<float>()
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static const aiImporterDesc desc = {
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"Doom 3 / MD5 Mesh 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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"md5mesh md5camera md5anim"
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};
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// ------------------------------------------------------------------------------------------------
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// Constructor to be privately used by Importer
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MD5Importer::MD5Importer() :
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mIOHandler(nullptr),
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mBuffer(),
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mFileSize(),
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mLineNumber(),
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mScene(),
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mHadMD5Mesh(),
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mHadMD5Anim(),
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mHadMD5Camera(),
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mCconfigNoAutoLoad(false) {
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// empty
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}
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// ------------------------------------------------------------------------------------------------
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// Destructor, private as well
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MD5Importer::~MD5Importer() {
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// empty
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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 MD5Importer::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool checkSig) const {
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const std::string extension = GetExtension(pFile);
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if (extension == "md5anim" || extension == "md5mesh" || extension == "md5camera")
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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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static const char * const tokens[] = { "MD5Version" };
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return SearchFileHeaderForToken(pIOHandler, pFile, tokens, 1);
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}
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return false;
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}
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// ------------------------------------------------------------------------------------------------
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// Get list of all supported extensions
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const aiImporterDesc *MD5Importer::GetInfo() const {
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return &desc;
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}
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// ------------------------------------------------------------------------------------------------
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// Setup import properties
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void MD5Importer::SetupProperties(const Importer *pImp) {
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// AI_CONFIG_IMPORT_MD5_NO_ANIM_AUTOLOAD
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mCconfigNoAutoLoad = (0 != pImp->GetPropertyInteger(AI_CONFIG_IMPORT_MD5_NO_ANIM_AUTOLOAD, 0));
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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 MD5Importer::InternReadFile(const std::string &pFile, aiScene *_pScene, IOSystem *pIOHandler) {
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mIOHandler = pIOHandler;
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mScene = _pScene;
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mHadMD5Mesh = mHadMD5Anim = mHadMD5Camera = false;
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// remove the file extension
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const std::string::size_type pos = pFile.find_last_of('.');
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mFile = (std::string::npos == pos ? pFile : pFile.substr(0, pos + 1));
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const std::string extension = GetExtension(pFile);
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try {
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if (extension == "md5camera") {
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LoadMD5CameraFile();
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} else if (mCconfigNoAutoLoad || extension == "md5anim") {
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// determine file extension and process just *one* file
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if (extension.length() == 0) {
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throw DeadlyImportError("Failure, need file extension to determine MD5 part type");
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}
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if (extension == "md5anim") {
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LoadMD5AnimFile();
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} else if (extension == "md5mesh") {
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LoadMD5MeshFile();
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}
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} else {
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LoadMD5MeshFile();
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LoadMD5AnimFile();
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}
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} catch (...) { // std::exception, Assimp::DeadlyImportError
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UnloadFileFromMemory();
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throw;
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}
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// make sure we have at least one file
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if (!mHadMD5Mesh && !mHadMD5Anim && !mHadMD5Camera) {
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throw DeadlyImportError("Failed to read valid contents out of this MD5* file");
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}
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// Now rotate the whole scene 90 degrees around the x axis to match our internal coordinate system
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mScene->mRootNode->mTransformation = aiMatrix4x4(1.f, 0.f, 0.f, 0.f,
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0.f, 0.f, 1.f, 0.f, 0.f, -1.f, 0.f, 0.f, 0.f, 0.f, 0.f, 1.f);
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// the output scene wouldn't pass the validation without this flag
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if (!mHadMD5Mesh) {
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mScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
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}
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// clean the instance -- the BaseImporter instance may be reused later.
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UnloadFileFromMemory();
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}
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// ------------------------------------------------------------------------------------------------
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// Load a file into a memory buffer
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void MD5Importer::LoadFileIntoMemory(IOStream *file) {
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// unload the previous buffer, if any
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UnloadFileFromMemory();
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ai_assert(nullptr != file);
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mFileSize = (unsigned int)file->FileSize();
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ai_assert(mFileSize);
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// allocate storage and copy the contents of the file to a memory buffer
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mBuffer = new char[mFileSize + 1];
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file->Read((void *)mBuffer, 1, mFileSize);
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mLineNumber = 1;
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// append a terminal 0
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mBuffer[mFileSize] = '\0';
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// now remove all line comments from the file
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CommentRemover::RemoveLineComments("//", mBuffer, ' ');
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}
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// ------------------------------------------------------------------------------------------------
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// Unload the current memory buffer
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void MD5Importer::UnloadFileFromMemory() {
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// delete the file buffer
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delete[] mBuffer;
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mBuffer = nullptr;
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mFileSize = 0;
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}
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// ------------------------------------------------------------------------------------------------
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// Build unique vertices
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void MD5Importer::MakeDataUnique(MD5::MeshDesc &meshSrc) {
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std::vector<bool> abHad(meshSrc.mVertices.size(), false);
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// allocate enough storage to keep the output structures
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const unsigned int iNewNum = static_cast<unsigned int>(meshSrc.mFaces.size() * 3);
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unsigned int iNewIndex = static_cast<unsigned int>(meshSrc.mVertices.size());
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meshSrc.mVertices.resize(iNewNum);
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// try to guess how much storage we'll need for new weights
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const float fWeightsPerVert = meshSrc.mWeights.size() / (float)iNewIndex;
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const unsigned int guess = (unsigned int)(fWeightsPerVert * iNewNum);
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meshSrc.mWeights.reserve(guess + (guess >> 3)); // + 12.5% as buffer
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for (FaceList::const_iterator iter = meshSrc.mFaces.begin(), iterEnd = meshSrc.mFaces.end(); iter != iterEnd; ++iter) {
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const aiFace &face = *iter;
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for (unsigned int i = 0; i < 3; ++i) {
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if (face.mIndices[0] >= meshSrc.mVertices.size()) {
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throw DeadlyImportError("MD5MESH: Invalid vertex index");
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}
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if (abHad[face.mIndices[i]]) {
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// generate a new vertex
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meshSrc.mVertices[iNewIndex] = meshSrc.mVertices[face.mIndices[i]];
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face.mIndices[i] = iNewIndex++;
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} else
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abHad[face.mIndices[i]] = true;
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}
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// swap face order
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std::swap(face.mIndices[0], face.mIndices[2]);
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Recursive node graph construction from a MD5MESH
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void MD5Importer::AttachChilds_Mesh(int iParentID, aiNode *piParent, BoneList &bones) {
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ai_assert(nullptr != piParent);
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ai_assert(!piParent->mNumChildren);
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// First find out how many children we'll have
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for (int i = 0; i < (int)bones.size(); ++i) {
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if (iParentID != i && bones[i].mParentIndex == iParentID) {
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++piParent->mNumChildren;
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}
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}
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if (piParent->mNumChildren) {
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piParent->mChildren = new aiNode *[piParent->mNumChildren];
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for (int i = 0; i < (int)bones.size(); ++i) {
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// (avoid infinite recursion)
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if (iParentID != i && bones[i].mParentIndex == iParentID) {
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aiNode *pc;
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// setup a new node
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*piParent->mChildren++ = pc = new aiNode();
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pc->mName = aiString(bones[i].mName);
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pc->mParent = piParent;
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// get the transformation matrix from rotation and translational components
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aiQuaternion quat;
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MD5::ConvertQuaternion(bones[i].mRotationQuat, quat);
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bones[i].mTransform = aiMatrix4x4(quat.GetMatrix());
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bones[i].mTransform.a4 = bones[i].mPositionXYZ.x;
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bones[i].mTransform.b4 = bones[i].mPositionXYZ.y;
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bones[i].mTransform.c4 = bones[i].mPositionXYZ.z;
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// store it for later use
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pc->mTransformation = bones[i].mInvTransform = bones[i].mTransform;
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bones[i].mInvTransform.Inverse();
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// the transformations for each bone are absolute, so we need to multiply them
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// with the inverse of the absolute matrix of the parent joint
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if (-1 != iParentID) {
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pc->mTransformation = bones[iParentID].mInvTransform * pc->mTransformation;
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}
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// add children to this node, too
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AttachChilds_Mesh(i, pc, bones);
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}
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}
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// undo offset computations
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piParent->mChildren -= piParent->mNumChildren;
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Recursive node graph construction from a MD5ANIM
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void MD5Importer::AttachChilds_Anim(int iParentID, aiNode *piParent, AnimBoneList &bones, const aiNodeAnim **node_anims) {
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ai_assert(nullptr != piParent);
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ai_assert(!piParent->mNumChildren);
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// First find out how many children we'll have
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for (int i = 0; i < (int)bones.size(); ++i) {
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if (iParentID != i && bones[i].mParentIndex == iParentID) {
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++piParent->mNumChildren;
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}
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}
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if (piParent->mNumChildren) {
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piParent->mChildren = new aiNode *[piParent->mNumChildren];
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for (int i = 0; i < (int)bones.size(); ++i) {
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// (avoid infinite recursion)
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if (iParentID != i && bones[i].mParentIndex == iParentID) {
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aiNode *pc;
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// setup a new node
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*piParent->mChildren++ = pc = new aiNode();
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pc->mName = aiString(bones[i].mName);
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pc->mParent = piParent;
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// get the corresponding animation channel and its first frame
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const aiNodeAnim **cur = node_anims;
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while ((**cur).mNodeName != pc->mName)
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++cur;
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aiMatrix4x4::Translation((**cur).mPositionKeys[0].mValue, pc->mTransformation);
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pc->mTransformation = pc->mTransformation * aiMatrix4x4((**cur).mRotationKeys[0].mValue.GetMatrix());
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// add children to this node, too
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AttachChilds_Anim(i, pc, bones, node_anims);
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}
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}
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// undo offset computations
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piParent->mChildren -= piParent->mNumChildren;
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Load a MD5MESH file
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void MD5Importer::LoadMD5MeshFile() {
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std::string filename = mFile + "md5mesh";
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std::unique_ptr<IOStream> file(mIOHandler->Open(filename, "rb"));
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// Check whether we can read from the file
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if (file.get() == nullptr || !file->FileSize()) {
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ASSIMP_LOG_WARN("Failed to access MD5MESH file: ", filename);
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return;
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}
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mHadMD5Mesh = true;
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LoadFileIntoMemory(file.get());
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// now construct a parser and parse the file
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MD5::MD5Parser parser(mBuffer, mFileSize);
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// load the mesh information from it
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MD5::MD5MeshParser meshParser(parser.mSections);
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// create the bone hierarchy - first the root node and dummy nodes for all meshes
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mScene->mRootNode = new aiNode("<MD5_Root>");
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mScene->mRootNode->mNumChildren = 2;
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mScene->mRootNode->mChildren = new aiNode *[2];
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// build the hierarchy from the MD5MESH file
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aiNode *pcNode = mScene->mRootNode->mChildren[1] = new aiNode();
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pcNode->mName.Set("<MD5_Hierarchy>");
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pcNode->mParent = mScene->mRootNode;
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AttachChilds_Mesh(-1, pcNode, meshParser.mJoints);
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pcNode = mScene->mRootNode->mChildren[0] = new aiNode();
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pcNode->mName.Set("<MD5_Mesh>");
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pcNode->mParent = mScene->mRootNode;
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#if 0
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if (pScene->mRootNode->mChildren[1]->mNumChildren) /* start at the right hierarchy level */
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SkeletonMeshBuilder skeleton_maker(pScene,pScene->mRootNode->mChildren[1]->mChildren[0]);
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#else
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// FIX: MD5 files exported from Blender can have empty meshes
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for (std::vector<MD5::MeshDesc>::const_iterator it = meshParser.mMeshes.begin(), end = meshParser.mMeshes.end(); it != end; ++it) {
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if (!(*it).mFaces.empty() && !(*it).mVertices.empty()) {
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++mScene->mNumMaterials;
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}
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}
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// generate all meshes
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mScene->mNumMeshes = mScene->mNumMaterials;
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mScene->mMeshes = new aiMesh *[mScene->mNumMeshes];
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mScene->mMaterials = new aiMaterial *[mScene->mNumMeshes];
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// storage for node mesh indices
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pcNode->mNumMeshes = mScene->mNumMeshes;
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pcNode->mMeshes = new unsigned int[pcNode->mNumMeshes];
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for (unsigned int m = 0; m < pcNode->mNumMeshes; ++m) {
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pcNode->mMeshes[m] = m;
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}
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unsigned int n = 0;
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for (std::vector<MD5::MeshDesc>::iterator it = meshParser.mMeshes.begin(), end = meshParser.mMeshes.end(); it != end; ++it) {
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MD5::MeshDesc &meshSrc = *it;
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if (meshSrc.mFaces.empty() || meshSrc.mVertices.empty()) {
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continue;
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}
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aiMesh *mesh = mScene->mMeshes[n] = new aiMesh();
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mesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
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// generate unique vertices in our internal verbose format
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MakeDataUnique(meshSrc);
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std::string name(meshSrc.mShader.C_Str());
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name += ".msh";
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mesh->mName = name;
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mesh->mNumVertices = (unsigned int)meshSrc.mVertices.size();
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mesh->mVertices = new aiVector3D[mesh->mNumVertices];
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mesh->mTextureCoords[0] = new aiVector3D[mesh->mNumVertices];
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mesh->mNumUVComponents[0] = 2;
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// copy texture coordinates
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aiVector3D *pv = mesh->mTextureCoords[0];
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for (MD5::VertexList::const_iterator iter = meshSrc.mVertices.begin(); iter != meshSrc.mVertices.end(); ++iter, ++pv) {
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pv->x = (*iter).mUV.x;
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pv->y = 1.0f - (*iter).mUV.y; // D3D to OpenGL
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pv->z = 0.0f;
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}
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// sort all bone weights - per bone
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unsigned int *piCount = new unsigned int[meshParser.mJoints.size()];
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::memset(piCount, 0, sizeof(unsigned int) * meshParser.mJoints.size());
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for (MD5::VertexList::const_iterator iter = meshSrc.mVertices.begin(); iter != meshSrc.mVertices.end(); ++iter, ++pv) {
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for (unsigned int jub = (*iter).mFirstWeight, w = jub; w < jub + (*iter).mNumWeights; ++w) {
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MD5::WeightDesc &weightDesc = meshSrc.mWeights[w];
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/* FIX for some invalid exporters */
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if (!(weightDesc.mWeight < AI_MD5_WEIGHT_EPSILON && weightDesc.mWeight >= -AI_MD5_WEIGHT_EPSILON)) {
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++piCount[weightDesc.mBone];
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}
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}
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}
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// check how many we will need
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for (unsigned int p = 0; p < meshParser.mJoints.size(); ++p) {
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if (piCount[p]) mesh->mNumBones++;
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}
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// just for safety
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if (mesh->mNumBones) {
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mesh->mBones = new aiBone *[mesh->mNumBones];
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for (unsigned int q = 0, h = 0; q < meshParser.mJoints.size(); ++q) {
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if (!piCount[q]) continue;
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aiBone *p = mesh->mBones[h] = new aiBone();
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p->mNumWeights = piCount[q];
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p->mWeights = new aiVertexWeight[p->mNumWeights];
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p->mName = aiString(meshParser.mJoints[q].mName);
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p->mOffsetMatrix = meshParser.mJoints[q].mInvTransform;
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// store the index for later use
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MD5::BoneDesc &boneSrc = meshParser.mJoints[q];
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boneSrc.mMap = h++;
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// compute w-component of quaternion
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MD5::ConvertQuaternion(boneSrc.mRotationQuat, boneSrc.mRotationQuatConverted);
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}
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pv = mesh->mVertices;
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for (MD5::VertexList::const_iterator iter = meshSrc.mVertices.begin(); iter != meshSrc.mVertices.end(); ++iter, ++pv) {
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// compute the final vertex position from all single weights
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*pv = aiVector3D();
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|
|
// there are models which have weights which don't sum to 1 ...
|
|
ai_real fSum = 0.0;
|
|
for (unsigned int jub = (*iter).mFirstWeight, w = jub; w < jub + (*iter).mNumWeights; ++w) {
|
|
fSum += meshSrc.mWeights[w].mWeight;
|
|
}
|
|
if (!fSum) {
|
|
ASSIMP_LOG_ERROR("MD5MESH: The sum of all vertex bone weights is 0");
|
|
continue;
|
|
}
|
|
|
|
// process bone weights
|
|
for (unsigned int jub = (*iter).mFirstWeight, w = jub; w < jub + (*iter).mNumWeights; ++w) {
|
|
if (w >= meshSrc.mWeights.size()) {
|
|
throw DeadlyImportError("MD5MESH: Invalid weight index");
|
|
}
|
|
|
|
MD5::WeightDesc &weightDesc = meshSrc.mWeights[w];
|
|
if (weightDesc.mWeight < AI_MD5_WEIGHT_EPSILON && weightDesc.mWeight >= -AI_MD5_WEIGHT_EPSILON) {
|
|
continue;
|
|
}
|
|
|
|
const ai_real fNewWeight = weightDesc.mWeight / fSum;
|
|
|
|
// transform the local position into worldspace
|
|
MD5::BoneDesc &boneSrc = meshParser.mJoints[weightDesc.mBone];
|
|
const aiVector3D v = boneSrc.mRotationQuatConverted.Rotate(weightDesc.vOffsetPosition);
|
|
|
|
// use the original weight to compute the vertex position
|
|
// (some MD5s seem to depend on the invalid weight values ...)
|
|
*pv += ((boneSrc.mPositionXYZ + v) * (ai_real)weightDesc.mWeight);
|
|
|
|
aiBone *bone = mesh->mBones[boneSrc.mMap];
|
|
*bone->mWeights++ = aiVertexWeight((unsigned int)(pv - mesh->mVertices), fNewWeight);
|
|
}
|
|
}
|
|
|
|
// undo our nice offset tricks ...
|
|
for (unsigned int p = 0; p < mesh->mNumBones; ++p) {
|
|
mesh->mBones[p]->mWeights -= mesh->mBones[p]->mNumWeights;
|
|
}
|
|
}
|
|
|
|
delete[] piCount;
|
|
|
|
// now setup all faces - we can directly copy the list
|
|
// (however, take care that the aiFace destructor doesn't delete the mIndices array)
|
|
mesh->mNumFaces = (unsigned int)meshSrc.mFaces.size();
|
|
mesh->mFaces = new aiFace[mesh->mNumFaces];
|
|
for (unsigned int c = 0; c < mesh->mNumFaces; ++c) {
|
|
mesh->mFaces[c].mNumIndices = 3;
|
|
mesh->mFaces[c].mIndices = meshSrc.mFaces[c].mIndices;
|
|
meshSrc.mFaces[c].mIndices = nullptr;
|
|
}
|
|
|
|
// generate a material for the mesh
|
|
aiMaterial *mat = new aiMaterial();
|
|
mScene->mMaterials[n] = mat;
|
|
|
|
// insert the typical doom3 textures:
|
|
// nnn_local.tga - normal map
|
|
// nnn_h.tga - height map
|
|
// nnn_s.tga - specular map
|
|
// nnn_d.tga - diffuse map
|
|
if (meshSrc.mShader.length && !strchr(meshSrc.mShader.data, '.')) {
|
|
|
|
aiString temp(meshSrc.mShader);
|
|
temp.Append("_local.tga");
|
|
mat->AddProperty(&temp, AI_MATKEY_TEXTURE_NORMALS(0));
|
|
|
|
temp = aiString(meshSrc.mShader);
|
|
temp.Append("_s.tga");
|
|
mat->AddProperty(&temp, AI_MATKEY_TEXTURE_SPECULAR(0));
|
|
|
|
temp = aiString(meshSrc.mShader);
|
|
temp.Append("_d.tga");
|
|
mat->AddProperty(&temp, AI_MATKEY_TEXTURE_DIFFUSE(0));
|
|
|
|
temp = aiString(meshSrc.mShader);
|
|
temp.Append("_h.tga");
|
|
mat->AddProperty(&temp, AI_MATKEY_TEXTURE_HEIGHT(0));
|
|
|
|
// set this also as material name
|
|
mat->AddProperty(&meshSrc.mShader, AI_MATKEY_NAME);
|
|
} else {
|
|
mat->AddProperty(&meshSrc.mShader, AI_MATKEY_TEXTURE_DIFFUSE(0));
|
|
}
|
|
mesh->mMaterialIndex = n++;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Load an MD5ANIM file
|
|
void MD5Importer::LoadMD5AnimFile() {
|
|
std::string pFile = mFile + "md5anim";
|
|
std::unique_ptr<IOStream> file(mIOHandler->Open(pFile, "rb"));
|
|
|
|
// Check whether we can read from the file
|
|
if (!file.get() || !file->FileSize()) {
|
|
ASSIMP_LOG_WARN("Failed to read MD5ANIM file: ", pFile);
|
|
return;
|
|
}
|
|
|
|
LoadFileIntoMemory(file.get());
|
|
|
|
// parse the basic file structure
|
|
MD5::MD5Parser parser(mBuffer, mFileSize);
|
|
|
|
// load the animation information from the parse tree
|
|
MD5::MD5AnimParser animParser(parser.mSections);
|
|
|
|
// generate and fill the output animation
|
|
if (animParser.mAnimatedBones.empty() || animParser.mFrames.empty() ||
|
|
animParser.mBaseFrames.size() != animParser.mAnimatedBones.size()) {
|
|
ASSIMP_LOG_ERROR("MD5ANIM: No frames or animated bones loaded");
|
|
} else {
|
|
mHadMD5Anim = true;
|
|
|
|
mScene->mAnimations = new aiAnimation *[mScene->mNumAnimations = 1];
|
|
aiAnimation *anim = mScene->mAnimations[0] = new aiAnimation();
|
|
anim->mNumChannels = (unsigned int)animParser.mAnimatedBones.size();
|
|
anim->mChannels = new aiNodeAnim *[anim->mNumChannels];
|
|
for (unsigned int i = 0; i < anim->mNumChannels; ++i) {
|
|
aiNodeAnim *node = anim->mChannels[i] = new aiNodeAnim();
|
|
node->mNodeName = aiString(animParser.mAnimatedBones[i].mName);
|
|
|
|
// allocate storage for the keyframes
|
|
node->mPositionKeys = new aiVectorKey[animParser.mFrames.size()];
|
|
node->mRotationKeys = new aiQuatKey[animParser.mFrames.size()];
|
|
}
|
|
|
|
// 1 tick == 1 frame
|
|
anim->mTicksPerSecond = animParser.fFrameRate;
|
|
|
|
for (FrameList::const_iterator iter = animParser.mFrames.begin(), iterEnd = animParser.mFrames.end(); iter != iterEnd; ++iter) {
|
|
double dTime = (double)(*iter).iIndex;
|
|
aiNodeAnim **pcAnimNode = anim->mChannels;
|
|
if (!(*iter).mValues.empty() || iter == animParser.mFrames.begin()) /* be sure we have at least one frame */
|
|
{
|
|
// now process all values in there ... read all joints
|
|
MD5::BaseFrameDesc *pcBaseFrame = &animParser.mBaseFrames[0];
|
|
for (AnimBoneList::const_iterator iter2 = animParser.mAnimatedBones.begin(); iter2 != animParser.mAnimatedBones.end(); ++iter2,
|
|
++pcAnimNode, ++pcBaseFrame) {
|
|
if ((*iter2).iFirstKeyIndex >= (*iter).mValues.size()) {
|
|
|
|
// Allow for empty frames
|
|
if ((*iter2).iFlags != 0) {
|
|
throw DeadlyImportError("MD5: Keyframe index is out of range");
|
|
}
|
|
continue;
|
|
}
|
|
const float *fpCur = &(*iter).mValues[(*iter2).iFirstKeyIndex];
|
|
aiNodeAnim *pcCurAnimBone = *pcAnimNode;
|
|
|
|
aiVectorKey *vKey = &pcCurAnimBone->mPositionKeys[pcCurAnimBone->mNumPositionKeys++];
|
|
aiQuatKey *qKey = &pcCurAnimBone->mRotationKeys[pcCurAnimBone->mNumRotationKeys++];
|
|
aiVector3D vTemp;
|
|
|
|
// translational component
|
|
for (unsigned int i = 0; i < 3; ++i) {
|
|
if ((*iter2).iFlags & (1u << i)) {
|
|
vKey->mValue[i] = *fpCur++;
|
|
} else
|
|
vKey->mValue[i] = pcBaseFrame->vPositionXYZ[i];
|
|
}
|
|
|
|
// orientation component
|
|
for (unsigned int i = 0; i < 3; ++i) {
|
|
if ((*iter2).iFlags & (8u << i)) {
|
|
vTemp[i] = *fpCur++;
|
|
} else
|
|
vTemp[i] = pcBaseFrame->vRotationQuat[i];
|
|
}
|
|
|
|
MD5::ConvertQuaternion(vTemp, qKey->mValue);
|
|
qKey->mTime = vKey->mTime = dTime;
|
|
}
|
|
}
|
|
|
|
// compute the duration of the animation
|
|
anim->mDuration = std::max(dTime, anim->mDuration);
|
|
}
|
|
|
|
// If we didn't build the hierarchy yet (== we didn't load a MD5MESH),
|
|
// construct it now from the data given in the MD5ANIM.
|
|
if (!mScene->mRootNode) {
|
|
mScene->mRootNode = new aiNode();
|
|
mScene->mRootNode->mName.Set("<MD5_Hierarchy>");
|
|
|
|
AttachChilds_Anim(-1, mScene->mRootNode, animParser.mAnimatedBones, (const aiNodeAnim **)anim->mChannels);
|
|
|
|
// Call SkeletonMeshBuilder to construct a mesh to represent the shape
|
|
if (mScene->mRootNode->mNumChildren) {
|
|
SkeletonMeshBuilder skeleton_maker(mScene, mScene->mRootNode->mChildren[0]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Load an MD5CAMERA file
|
|
void MD5Importer::LoadMD5CameraFile() {
|
|
std::string pFile = mFile + "md5camera";
|
|
std::unique_ptr<IOStream> file(mIOHandler->Open(pFile, "rb"));
|
|
|
|
// Check whether we can read from the file
|
|
if (!file.get() || !file->FileSize()) {
|
|
throw DeadlyImportError("Failed to read MD5CAMERA file: ", pFile);
|
|
}
|
|
mHadMD5Camera = true;
|
|
LoadFileIntoMemory(file.get());
|
|
|
|
// parse the basic file structure
|
|
MD5::MD5Parser parser(mBuffer, mFileSize);
|
|
|
|
// load the camera animation data from the parse tree
|
|
MD5::MD5CameraParser cameraParser(parser.mSections);
|
|
|
|
if (cameraParser.frames.empty()) {
|
|
throw DeadlyImportError("MD5CAMERA: No frames parsed");
|
|
}
|
|
|
|
std::vector<unsigned int> &cuts = cameraParser.cuts;
|
|
std::vector<MD5::CameraAnimFrameDesc> &frames = cameraParser.frames;
|
|
|
|
// Construct output graph - a simple root with a dummy child.
|
|
// The root node performs the coordinate system conversion
|
|
aiNode *root = mScene->mRootNode = new aiNode("<MD5CameraRoot>");
|
|
root->mChildren = new aiNode *[root->mNumChildren = 1];
|
|
root->mChildren[0] = new aiNode("<MD5Camera>");
|
|
root->mChildren[0]->mParent = root;
|
|
|
|
// ... but with one camera assigned to it
|
|
mScene->mCameras = new aiCamera *[mScene->mNumCameras = 1];
|
|
aiCamera *cam = mScene->mCameras[0] = new aiCamera();
|
|
cam->mName = "<MD5Camera>";
|
|
|
|
// FIXME: Fov is currently set to the first frame's value
|
|
cam->mHorizontalFOV = AI_DEG_TO_RAD(frames.front().fFOV);
|
|
|
|
// every cut is written to a separate aiAnimation
|
|
if (!cuts.size()) {
|
|
cuts.push_back(0);
|
|
cuts.push_back(static_cast<unsigned int>(frames.size() - 1));
|
|
} else {
|
|
cuts.insert(cuts.begin(), 0);
|
|
|
|
if (cuts.back() < frames.size() - 1)
|
|
cuts.push_back(static_cast<unsigned int>(frames.size() - 1));
|
|
}
|
|
|
|
mScene->mNumAnimations = static_cast<unsigned int>(cuts.size() - 1);
|
|
aiAnimation **tmp = mScene->mAnimations = new aiAnimation *[mScene->mNumAnimations];
|
|
for (std::vector<unsigned int>::const_iterator it = cuts.begin(); it != cuts.end() - 1; ++it) {
|
|
|
|
aiAnimation *anim = *tmp++ = new aiAnimation();
|
|
anim->mName.length = ::ai_snprintf(anim->mName.data, MAXLEN, "anim%u_from_%u_to_%u", (unsigned int)(it - cuts.begin()), (*it), *(it + 1));
|
|
|
|
anim->mTicksPerSecond = cameraParser.fFrameRate;
|
|
anim->mChannels = new aiNodeAnim *[anim->mNumChannels = 1];
|
|
aiNodeAnim *nd = anim->mChannels[0] = new aiNodeAnim();
|
|
nd->mNodeName.Set("<MD5Camera>");
|
|
|
|
nd->mNumPositionKeys = nd->mNumRotationKeys = *(it + 1) - (*it);
|
|
nd->mPositionKeys = new aiVectorKey[nd->mNumPositionKeys];
|
|
nd->mRotationKeys = new aiQuatKey[nd->mNumRotationKeys];
|
|
for (unsigned int i = 0; i < nd->mNumPositionKeys; ++i) {
|
|
|
|
nd->mPositionKeys[i].mValue = frames[*it + i].vPositionXYZ;
|
|
MD5::ConvertQuaternion(frames[*it + i].vRotationQuat, nd->mRotationKeys[i].mValue);
|
|
nd->mRotationKeys[i].mTime = nd->mPositionKeys[i].mTime = *it + i;
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif // !! ASSIMP_BUILD_NO_MD5_IMPORTER
|