541 lines
14 KiB
C++
541 lines
14 KiB
C++
#include "Object.h"
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#include <iostream>
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#define PI (4.0*atan(1.0))
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/////////////////////////////////////////////////////////////////////////
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// public constructor/destructor
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Object::Object(const char* path)
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{
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// open file
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fsMesh.open(path, std::ios::in | std::ios::binary);
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if (!fsMesh.is_open())
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throw std::invalid_argument(std::string("file not found: ") += path);
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// jump to file size information
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fsMesh.seekg(4);
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std::uint32_t tempFileSize;
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std::list<ChunkHeader*> tempMainChunks;
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// get all chunks under HEDR
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fsMesh.read(reinterpret_cast<char*>(&tempFileSize), sizeof(tempFileSize));
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loadChunks(tempMainChunks, fsMesh.tellg(), tempFileSize);
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// evaluate HEDR subchunks (= find MSH2)
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for (std::list<ChunkHeader*>::iterator it = tempMainChunks.begin(); it != tempMainChunks.end(); it++)
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{
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if (!strcmp("MSH2", (*it)->name))
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{
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// get all subchunks
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std::list<ChunkHeader*> tempMsh2Chunks;
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loadChunks(tempMsh2Chunks, (*it)->position, (*it)->size);
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// evaluate MSH2 subchunks
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analyseMsh2Chunks(tempMsh2Chunks);
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// clean up
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while (!tempMsh2Chunks.empty())
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{
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ChunkHeader* tempCursor = tempMsh2Chunks.front();
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tempMsh2Chunks.pop_front();
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delete tempCursor;
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}
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continue;
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}
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}
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// clean up
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while (!tempMainChunks.empty())
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{
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ChunkHeader* tempCursor = tempMainChunks.front();
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tempMainChunks.pop_front();
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delete tempCursor;
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}
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// close file
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fsMesh.close();
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}
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Object::~Object()
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{
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// clear texture list
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vTextures.clear();
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// clear Model list (don't delete the elements)
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vModls.clear();
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}
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/////////////////////////////////////////////////////////////////////////
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// private functions
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void Object::loadChunks(std::list<ChunkHeader*>& destination, std::streampos start, const std::uint32_t end)
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{
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// jump to first chunk
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fsMesh.seekg(start);
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do
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{
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ChunkHeader* tempHeader = new ChunkHeader();
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fsMesh.read(reinterpret_cast<char*>(&tempHeader->name[0]), sizeof(tempHeader->name) - 1);
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fsMesh.read(reinterpret_cast<char*>(&tempHeader->size), sizeof(tempHeader->size));
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tempHeader->position = fsMesh.tellg();
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destination.push_back(tempHeader);
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fsMesh.seekg(tempHeader->size, std::ios_base::cur);
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// reached end
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if (fsMesh.tellg() - start == end)
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break;
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// error. Maybe the size information is corrupted
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if (!fsMesh.good())
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{
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std::cout << "WARNING: corrupted file. Trying to continue" << std::endl;
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fsMesh.clear();
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break;
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}
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} while (true);
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}
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void Object::analyseMsh2Chunks(std::list<ChunkHeader*>& chunkList)
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{
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for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
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{
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if (!strcmp("MATL", (*it)->name))
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{
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// "useless" information how many MATD follow
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fsMesh.seekg((*it)->position);
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std::uint32_t tempMatdCount;
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fsMesh.read(reinterpret_cast<char*>(&tempMatdCount), sizeof(std::uint32_t));
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// get all MATD from MATL list
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std::list<ChunkHeader*> tempMatlChunks;
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loadChunks(tempMatlChunks, fsMesh.tellg(), (*it)->size - 4);
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// evaluate MATL subchunks
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for (std::list<ChunkHeader*>::iterator it = tempMatlChunks.begin(); it != tempMatlChunks.end(); it++)
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{
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// This shouldn't be anything else than MATD
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if (!strcmp("MATD", (*it)->name))
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{
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// get all subchunks from MATD
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std::list<ChunkHeader*> tempMatdChunks;
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loadChunks(tempMatdChunks, (*it)->position, (*it)->size);
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// analyse MATD subchunks
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analyseMatdChunks(tempMatdChunks);
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// clean up
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while (!tempMatdChunks.empty())
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{
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ChunkHeader* tempCursor = tempMatdChunks.front();
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tempMatdChunks.pop_front();
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delete tempCursor;
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}
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}
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}
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// clean up
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while (!tempMatlChunks.empty())
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{
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ChunkHeader* tempCursor = tempMatlChunks.front();
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tempMatlChunks.pop_front();
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delete tempCursor;
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}
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continue;
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}
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if (!strcmp("MODL", (*it)->name))
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{
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Modl* tempModl = new Modl;
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// get all subchunks
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std::list<ChunkHeader*> tempChunks;
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loadChunks(tempChunks, (*it)->position, (*it)->size);
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// evaluate MODL subchunks
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analyseModlChunks(tempModl, tempChunks);
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//clean up
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while (!tempChunks.empty())
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{
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ChunkHeader* tempCursor = tempChunks.front();
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tempChunks.pop_front();
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delete tempCursor;
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}
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// save Model data
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vModls.push_back(tempModl);
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continue;
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}
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}
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}
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void Object::analyseMatdChunks(std::list<ChunkHeader*>& chunkList)
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{
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for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
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{
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//TX1D, TX2D, TX3D
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if (!strcmp("TX0D", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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char* buffer = new char[(*it)->size + 1];
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*buffer = { 0 };
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fsMesh.read(buffer, (*it)->size);
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vTextures.push_back(buffer);
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delete buffer;
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continue;
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}
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}
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}
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void Object::analyseModlChunks(Modl* dataDestination, std::list<ChunkHeader*>& chunkList)
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{
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for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
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{
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if (!strcmp("MTYP", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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std::uint32_t tempType;
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fsMesh.read(reinterpret_cast<char*>(&tempType), sizeof(tempType));
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dataDestination->type = (Mtyp)tempType;
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continue;
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}
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if (!strcmp("PRNT", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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char* buffer = new char[(*it)->size];
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*buffer = { 0 };
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fsMesh.read(buffer, (*it)->size);
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dataDestination->parent = buffer;
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delete buffer;
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continue;
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}
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if (!strcmp("NAME", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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char* buffer = new char[(*it)->size];
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*buffer = { 0 };
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fsMesh.read(buffer, (*it)->size);
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dataDestination->name = buffer;
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delete buffer;
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continue;
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}
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if (!strcmp("FLGS", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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fsMesh.read(reinterpret_cast<char*>(&dataDestination->renderFlags), sizeof(dataDestination->renderFlags));
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continue;
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}
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if (!strcmp("TRAN", (*it)->name))
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{
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float tempScale[3];
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float tempRotation[4];
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float tempTrans[3];
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fsMesh.seekg((*it)->position);
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fsMesh.read(reinterpret_cast<char*>(&tempScale[0]), sizeof(float));
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fsMesh.read(reinterpret_cast<char*>(&tempScale[1]), sizeof(float));
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fsMesh.read(reinterpret_cast<char*>(&tempScale[2]), sizeof(float));
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fsMesh.read(reinterpret_cast<char*>(&tempRotation[0]), sizeof(float));
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fsMesh.read(reinterpret_cast<char*>(&tempRotation[1]), sizeof(float));
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fsMesh.read(reinterpret_cast<char*>(&tempRotation[2]), sizeof(float));
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fsMesh.read(reinterpret_cast<char*>(&tempRotation[3]), sizeof(float));
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//calculate x,y,z rotation
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tempRotation[0] = atan2(2 * (tempRotation[0] * tempRotation[1] + tempRotation[2] * tempRotation[3]),
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1 - 2 * (pow(tempRotation[1], 2) + pow(tempRotation[2], 2)));
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tempRotation[1] = asin(2 * (tempRotation[0] * tempRotation[2] - tempRotation[3] * tempRotation[1]));
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tempRotation[2] = atan2(2 * (tempRotation[0] * tempRotation[3] + tempRotation[1] * tempRotation[2]),
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1 - 2 * (pow(tempRotation[2], 2) + pow(tempRotation[3], 2))) - PI;
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fsMesh.read(reinterpret_cast<char*>(&tempTrans[0]), sizeof(float));
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fsMesh.read(reinterpret_cast<char*>(&tempTrans[1]), sizeof(float));
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fsMesh.read(reinterpret_cast<char*>(&tempTrans[2]), sizeof(float));
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dataDestination->m4x4Translation = glm::scale(
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dataDestination->m4x4Translation,
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glm::vec3(tempScale[0], tempScale[1], tempScale[2])
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);
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dataDestination->m4x4Translation = glm::translate(
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dataDestination->m4x4Translation,
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glm::vec3(tempTrans[0], tempTrans[1], tempTrans[2])
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);
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dataDestination->m4x4Translation = glm::rotate(
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dataDestination->m4x4Translation,
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tempRotation[0],
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glm::vec3(1, 0, 0)
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);
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dataDestination->m4x4Translation = glm::rotate(
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dataDestination->m4x4Translation,
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tempRotation[1],
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glm::vec3(0, 1, 0)
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);
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dataDestination->m4x4Translation = glm::rotate(
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dataDestination->m4x4Translation,
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tempRotation[2],
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glm::vec3(0, 0, 1)
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);
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continue;
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}
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if (!strcmp("GEOM", (*it)->name))
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{
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// get all subchunks
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std::list<ChunkHeader*> tempGeomChunks;
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loadChunks(tempGeomChunks, (*it)->position, (*it)->size);
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// evaluate GEOM subchunks
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analyseGeomChunks(dataDestination, tempGeomChunks);
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// clean up
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while (!tempGeomChunks.empty())
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{
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ChunkHeader* tempCursor = tempGeomChunks.front();
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tempGeomChunks.pop_front();
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delete tempCursor;
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}
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continue;
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}
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}
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}
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void Object::analyseGeomChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
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{
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for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
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{
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if (!strcmp("SEGM", (*it)->name))
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{
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// get all subchunks
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std::list<ChunkHeader*> tempSegmChunks;
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loadChunks(tempSegmChunks, (*it)->position, (*it)->size);
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// evaluate SEGM subchunks
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analyseSegmChunks(dataDestination, tempSegmChunks);
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// clean up
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while (!tempSegmChunks.empty())
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{
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ChunkHeader* tempCursor = tempSegmChunks.front();
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tempSegmChunks.pop_front();
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delete tempCursor;
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}
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continue;
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}
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if (!strcmp("CLTH", (*it)->name))
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{
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// get all subchunks
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std::list<ChunkHeader*> tempClthChunks;
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loadChunks(tempClthChunks, (*it)->position, (*it)->size);
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// evaluate CLTH subchunks
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analyseClthChunks(dataDestination, tempClthChunks);
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// clean up
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while (!tempClthChunks.empty())
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{
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ChunkHeader* tempCursor = tempClthChunks.front();
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tempClthChunks.pop_front();
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delete tempCursor;
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}
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continue;
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}
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}
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}
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void Object::analyseSegmChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
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{
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for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
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{
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/*if (!strcmp("SHDW", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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/* shadow mesh geometry
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long int - 4 - number of vertex positions
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float[3][] - 12 each - vertex positions (XYZ)
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long int - 4 - number of edges
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short int[4][] - 8 each - edge the following 4 entries from one edge
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> short int - 2 - vertex index of this edge, referes to the vertex list
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> short int - 2 - Reference into an edge. Defines the target vertex (the local edge vertex of the referenced edge) to which the edge should be dran from the local vertex
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> short int - 2 - Second reference into an edge. In all example .msh files I've seen this always refers to the same vertex as the first edge reference
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> short int - 2 - MAX_VALUE of short integers (65535). Indicates the end of this edge
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* /
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continue;
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}*/
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if (!strcmp("MATI", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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std::uint32_t tempIndex;
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fsMesh.read(reinterpret_cast<char*>(&tempIndex), sizeof(tempIndex));
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if (vTextures.size() <= tempIndex)
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{
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std::cout << "warning texture index <" << tempIndex << "> unknown" << std::endl;
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dataDestination->texture = "";
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continue;
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}
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dataDestination->texture = vTextures[tempIndex];
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continue;
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}
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if (!strcmp("POSL", (*it)->name))
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{
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readVertex(dataDestination, (*it)->position);
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continue;
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}
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/*if (!strcmp("NRML", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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// List of normals
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// long int - 4 - number of normal vectores stored in this list
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// float[3][] - 12 each - UVW vector for each vertex
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continue;
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}*/
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if (!strcmp("UV0L", (*it)->name))
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{
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readUV(dataDestination, (*it)->position);
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continue;
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}
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if (!strcmp("STRP", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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fsMesh.seekg((*it)->position);
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fsMesh.read(reinterpret_cast<char*>(&dataDestination->meshSize), sizeof(dataDestination->meshSize));
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dataDestination->mesh = new std::uint32_t[dataDestination->meshSize];
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for (unsigned int i = 0; i < dataDestination->meshSize; i += 3)
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{
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std::uint16_t tempValue[3];
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fsMesh.read(reinterpret_cast<char*>(&tempValue[0]), sizeof(std::uint16_t));
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fsMesh.read(reinterpret_cast<char*>(&tempValue[1]), sizeof(std::uint16_t));
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fsMesh.read(reinterpret_cast<char*>(&tempValue[2]), sizeof(std::uint16_t));
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if (!(tempValue[0] >> 15 && tempValue[1] >> 15 && !(tempValue[2] >> 15)))
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throw std::invalid_argument("invalid file. go and triangulate!");
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tempValue[0] = (std::uint16_t(tempValue[0] << 1) >> 1);
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tempValue[1] = (std::uint16_t(tempValue[1] << 1) >> 1);
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dataDestination->mesh[i] = (std::uint32_t)tempValue[0];
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dataDestination->mesh[i + 1] = (std::uint32_t)tempValue[1];
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dataDestination->mesh[i + 2] = (std::uint32_t)tempValue[2];
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}
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continue;
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}
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}
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}
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void Object::analyseClthChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
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{
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for (std::list<ChunkHeader*>::iterator it = chunkList.begin(); it != chunkList.end(); it++)
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{
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if (!strcmp("CTEX", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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char* buffer = new char[(*it)->size];
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*buffer = { 0 };
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fsMesh.read(buffer, (*it)->size);
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dataDestination->texture = buffer;
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delete buffer;
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continue;
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}
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if (!strcmp("CPOS", (*it)->name))
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{
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readVertex(dataDestination, (*it)->position);
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continue;
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}
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if (!strcmp("CUV0", (*it)->name))
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{
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readUV(dataDestination, (*it)->position);
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continue;
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}
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if (!strcmp("CMSH", (*it)->name))
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{
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fsMesh.seekg((*it)->position);
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fsMesh.read(reinterpret_cast<char*>(&dataDestination->meshSize), sizeof(dataDestination->meshSize));
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dataDestination->mesh = new std::uint32_t[dataDestination->meshSize * 3];
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for (unsigned int i = 0; i < dataDestination->meshSize; i += 3)
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{
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fsMesh.read(reinterpret_cast<char*>(&dataDestination->mesh[i]), sizeof(std::uint32_t));
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fsMesh.read(reinterpret_cast<char*>(&dataDestination->mesh[i + 1]), sizeof(std::uint32_t));
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fsMesh.read(reinterpret_cast<char*>(&dataDestination->mesh[i + 2]), sizeof(std::uint32_t));
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}
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continue;
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}
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}
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}
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void Object::readVertex(Modl* dataDestination, std::streampos position)
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{
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std::uint32_t tempSize;
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fsMesh.seekg(position);
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fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
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dataDestination->vertex = new float[tempSize * 3];
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for (unsigned int i = 0; i < tempSize * 3; i++)
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fsMesh.read(reinterpret_cast<char*>(&dataDestination->vertex[i]), sizeof(float));
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}
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void Object::readUV(Modl* dataDestination, std::streampos position)
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{
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std::uint32_t tempSize;
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fsMesh.seekg(position);
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fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
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dataDestination->uv = new float[tempSize * 2];
|
|
|
|
for (unsigned int i = 0; i < tempSize * 2; i++)
|
|
fsMesh.read(reinterpret_cast<char*>(&dataDestination->uv[i]), sizeof(float));
|
|
}
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////
|
|
// public getter
|
|
|
|
std::vector<Modl*> Object::getModels() const
|
|
{
|
|
return vModls;
|
|
}
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////
|
|
// public functions
|
|
|