SWBF2-Classic-Msh-Viewer/MshViewer/Source/Object.cpp

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#include "Object.h"
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#include <iostream>
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#define PI (4.0*atan(1.0))
/////////////////////////////////////////////////////////////////////////
// public constructor/destructor
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Object::Object(const char* path)
{
vModls = new std::vector<Modl*>;
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// open file
fsMesh.open(path, std::ios::in | std::ios::binary);
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if (!fsMesh.is_open())
throw std::invalid_argument(std::string("file not found: ") += path);
// jump to file size information
fsMesh.seekg(4);
std::uint32_t tempFileSize;
std::list<ChunkHeader*> tempMainChunks;
// get all chunks under HEDR
fsMesh.read(reinterpret_cast<char*>(&tempFileSize), sizeof(tempFileSize));
loadChunks(tempMainChunks, fsMesh.tellg(), tempFileSize);
// evaluate HEDR subchunks (= find MSH2)
for (std::list<ChunkHeader*>::iterator it = tempMainChunks.begin(); it != tempMainChunks.end(); it++)
{
if (!strcmp("MSH2", (*it)->name))
{
// get all subchunks
std::list<ChunkHeader*> tempMsh2Chunks;
loadChunks(tempMsh2Chunks, (*it)->position, (*it)->size);
// evaluate MSH2 subchunks
analyseMsh2Chunks(tempMsh2Chunks);
// clean up
while (!tempMsh2Chunks.empty())
{
ChunkHeader* tempCursor = tempMsh2Chunks.front();
tempMsh2Chunks.pop_front();
delete tempCursor;
}
continue;
}
}
// clean up
while (!tempMainChunks.empty())
{
ChunkHeader* tempCursor = tempMainChunks.front();
tempMainChunks.pop_front();
delete tempCursor;
}
// close file
fsMesh.close();
}
Object::~Object()
{
// clear texture list
vTextures.clear();
}
/////////////////////////////////////////////////////////////////////////
// private functions
void Object::loadChunks(std::list<ChunkHeader*>& destination, std::streampos start, const std::uint32_t end)
{
// jump to first chunk
fsMesh.seekg(start);
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do
{
ChunkHeader* tempHeader = new ChunkHeader();
fsMesh.read(reinterpret_cast<char*>(&tempHeader->name[0]), sizeof(tempHeader->name) - 1);
fsMesh.read(reinterpret_cast<char*>(&tempHeader->size), sizeof(tempHeader->size));
tempHeader->position = fsMesh.tellg();
destination.push_back(tempHeader);
fsMesh.seekg(tempHeader->size, std::ios_base::cur);
// reached end
if (fsMesh.tellg() - start == end)
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break;
// error. Maybe the size information is corrupted
if (!fsMesh.good())
{
std::cout << "WARNING: corrupted file. Trying to continue" << std::endl;
fsMesh.clear();
break;
}
} while (true);
}
void Object::analyseMsh2Chunks(std::list<ChunkHeader*>& chunkList)
{
for (auto& it : chunkList)
{
if (!strcmp("SINF", it->name))
{
std::list<ChunkHeader*> tempSinfChunks;
loadChunks(tempSinfChunks, it->position, it->size);
// evaluate MATL subchunks
for (auto& it : tempSinfChunks)
{
if (!strcmp("BBOX", it->name))
{
fsMesh.seekg(it->position);
// read in the quaternion
for (int i = 0; i < 4; i++)
fsMesh.read(reinterpret_cast<char*>(&boundingBox.quaternion[i]), sizeof(float));
//read in the center
for (int i = 0; i < 3; i++)
fsMesh.read(reinterpret_cast<char*>(&boundingBox.center[i]), sizeof(float));
//read in the extents
for (int i = 0; i < 3; i++)
fsMesh.read(reinterpret_cast<char*>(&boundingBox.extents[i]), sizeof(float));
}
}
for (ChunkHeader* it : tempSinfChunks)
delete it;
}
else if (!strcmp("MATL", it->name))
{
// "useless" information how many MATD follow
fsMesh.seekg(it->position);
fsMesh.seekg(sizeof(std::uint32_t), std::ios_base::cur);
// get all MATD from MATL list
std::list<ChunkHeader*> tempMatlChunks;
loadChunks(tempMatlChunks, fsMesh.tellg(), it->size - 4);
// evaluate MATL subchunks
for (auto& it : tempMatlChunks)
{
// This shouldn't be anything else than MATD
if (!strcmp("MATD", it->name))
{
// get all subchunks from MATD
std::list<ChunkHeader*> tempMatdChunks;
loadChunks(tempMatdChunks, it->position, it->size);
vTextures.push_back("");
// analyse MATD subchunks
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analyseMatdChunks(tempMatdChunks);
// clean up
while (!tempMatdChunks.empty())
{
ChunkHeader* tempCursor = tempMatdChunks.front();
tempMatdChunks.pop_front();
delete tempCursor;
}
}
}
// clean up
while (!tempMatlChunks.empty())
{
ChunkHeader* tempCursor = tempMatlChunks.front();
tempMatlChunks.pop_front();
delete tempCursor;
}
}
else if (!strcmp("MODL", it->name))
{
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Modl* tempModl = new Modl;
// get all subchunks
std::list<ChunkHeader*> tempChunks;
loadChunks(tempChunks, it->position, it->size);
// evaluate MODL subchunks
analyseModlChunks(tempModl, tempChunks);
//clean up
while (!tempChunks.empty())
{
ChunkHeader* tempCursor = tempChunks.front();
tempChunks.pop_front();
delete tempCursor;
}
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// save Model data
vModls->push_back(tempModl);
}
}
}
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void Object::analyseMatdChunks(std::list<ChunkHeader*>& chunkList)
{
for (auto& it : chunkList)
{
//TX1D, TX2D, TX3D
if (!strcmp("TX0D", it->name))
{
fsMesh.seekg(it->position);
char* buffer = new char[it->size + 1];
*buffer = { 0 };
fsMesh.read(buffer, it->size);
vTextures.back() = buffer;
delete[] buffer;
}
}
}
void Object::analyseModlChunks(Modl* dataDestination, std::list<ChunkHeader*>& chunkList)
{
for (auto& it : chunkList)
{
if (!strcmp("MTYP", it->name))
{
fsMesh.seekg(it->position);
std::uint32_t tempType;
fsMesh.read(reinterpret_cast<char*>(&tempType), sizeof(tempType));
dataDestination->type = (Mtyp)tempType;
}
else if (!strcmp("PRNT", it->name))
{
fsMesh.seekg(it->position);
char* buffer = new char[it->size];
*buffer = { 0 };
fsMesh.read(buffer, it->size);
dataDestination->parent = buffer;
delete[] buffer;
}
else if (!strcmp("NAME", it->name))
{
fsMesh.seekg(it->position);
char* buffer = new char[it->size];
*buffer = { 0 };
fsMesh.read(buffer, it->size);
dataDestination->name = buffer;
delete[] buffer;
}
else if (!strcmp("FLGS", it->name))
{
fsMesh.seekg(it->position);
fsMesh.read(reinterpret_cast<char*>(&dataDestination->renderFlags), sizeof(dataDestination->renderFlags));
}
else if (!strcmp("TRAN", it->name))
{
float tempScale[3];
float tempRotation[4];
float tempTrans[3];
fsMesh.seekg(it->position);
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for(int i = 0; i < 3; i++)
fsMesh.read(reinterpret_cast<char*>(&tempScale[i]), sizeof(float));
for (int i = 0; i < 4; i++)
fsMesh.read(reinterpret_cast<char*>(&tempRotation[i]), sizeof(float));
quat2eul(tempRotation[0], tempRotation[1], tempRotation[2], tempRotation[3]);
for (int i = 0; i < 3; i++)
fsMesh.read(reinterpret_cast<char*>(&tempTrans[i]), sizeof(float));
dataDestination->m4x4Translation = glm::scale(
dataDestination->m4x4Translation,
glm::vec3(tempScale[0], tempScale[1], tempScale[2])
);
dataDestination->m4x4Translation = glm::translate(
dataDestination->m4x4Translation,
glm::vec3(tempTrans[0], tempTrans[1], tempTrans[2])
);
dataDestination->m4x4Translation = glm::rotate(
dataDestination->m4x4Translation,
tempRotation[0],
glm::vec3(1, 0, 0)
);
dataDestination->m4x4Translation = glm::rotate(
dataDestination->m4x4Translation,
tempRotation[1],
glm::vec3(0, 1, 0)
);
dataDestination->m4x4Translation = glm::rotate(
dataDestination->m4x4Translation,
tempRotation[2],
glm::vec3(0, 0, 1)
);
}
else if (!strcmp("GEOM", it->name))
{
// get all subchunks
std::list<ChunkHeader*> tempGeomChunks;
loadChunks(tempGeomChunks, it->position, it->size);
// evaluate GEOM subchunks
analyseGeomChunks(dataDestination, tempGeomChunks);
// clean up
while (!tempGeomChunks.empty())
{
ChunkHeader* tempCursor = tempGeomChunks.front();
tempGeomChunks.pop_front();
delete tempCursor;
}
}
}
}
void Object::analyseGeomChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
{
for (auto& it : chunkList)
{
if (!strcmp("SEGM", it->name))
{
// get all subchunks
std::list<ChunkHeader*> tempSegmChunks;
loadChunks(tempSegmChunks, it->position, it->size);
// evaluate SEGM subchunks
analyseSegmChunks(dataDestination, tempSegmChunks);
// clean up
while (!tempSegmChunks.empty())
{
ChunkHeader* tempCursor = tempSegmChunks.front();
tempSegmChunks.pop_front();
delete tempCursor;
}
continue;
}
if (!strcmp("CLTH", it->name))
{
// get all subchunks
std::list<ChunkHeader*> tempClthChunks;
loadChunks(tempClthChunks, it->position, it->size);
// evaluate CLTH subchunks
analyseClthChunks(dataDestination, tempClthChunks);
// clean up
while (!tempClthChunks.empty())
{
ChunkHeader* tempCursor = tempClthChunks.front();
tempClthChunks.pop_front();
delete tempCursor;
}
continue;
}
}
}
void Object::analyseSegmChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
{
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Segment* tempData = new Segment;
for (auto& it : chunkList)
{
if (!strcmp("MATI", it->name))
{
fsMesh.seekg(it->position);
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fsMesh.read(reinterpret_cast<char*>(&tempData->textureIndex), sizeof(tempData->textureIndex));
}
else if (!strcmp("POSL", it->name))
{
readVertex(tempData, it->position);
}
/*else if (!strcmp("NRML", it->name))
{
fsMesh.seekg(it->position);
std::uint32_t tempSize;
fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
// List of normals
// long int - 4 - number of normal vectores stored in this list
// float[3][] - 12 each - UVW vector for each vertex
}*/
else if (!strcmp("UV0L", it->name))
{
readUV(tempData, it->position);
}
else if (!strcmp("STRP", it->name))
{
// don't get null, bone, shadowMesh and hidden mesh indices
if (dataDestination->type == null ||
dataDestination->type == bone ||
dataDestination->type == shadowMesh ||
dataDestination->renderFlags == 1)
continue;
// jump to the data section and read the size;
std::uint32_t tempSize;
fsMesh.seekg(it->position);
fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
int highBitCount(0);
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std::vector<uint32_t> tempPoly; // = new std::vector<uint32_t>;
for (unsigned int i = 0; i < tempSize; i++)
{
// ReadData
std::uint16_t tempValue;
fsMesh.read(reinterpret_cast<char*>(&tempValue), sizeof(std::uint16_t));
// Check for highbit
if (tempValue >> 15)
{
highBitCount++;
tempValue = (std::uint16_t(tempValue << 1) >> 1);
}
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tempPoly.push_back((std::uint32_t)tempValue);
// new Polygon found
if (highBitCount == 2)
{
// reset highBitCount
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highBitCount = 0;
// remove the last two values..
std::uint32_t saveData[2];
for (int i = 0; i < 2; i++)
{
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saveData[i] = tempPoly.back();
tempPoly.pop_back();
}
// ..and save them in the new vector
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tempData->meshIndices.push_back(tempPoly);
tempPoly.clear();
for (int i = 1; i >= 0; i--)
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tempPoly.push_back(saveData[i]);
} // if high bit set
} // for all values
// save the last values (where no 2 high bits follow);
tempData->meshIndices.push_back(tempPoly);
// kick the first element, it's empty as a reason of the algo above;
tempData->meshIndices.erase(tempData->meshIndices.begin());
}
}
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dataDestination->segmLst.push_back(tempData);
}
void Object::analyseClthChunks(Modl * dataDestination, std::list<ChunkHeader*>& chunkList)
{
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Segment* tempData = new Segment;
for (auto& it : chunkList)
{
if (!strcmp("CTEX", it->name))
{
fsMesh.seekg(it->position);
char* buffer = new char[it->size];
*buffer = { 0 };
fsMesh.read(buffer, it->size);
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bool tempFound(false);
for (unsigned int index = 0; index < vTextures.size(); index++)
{
if (!strcmp(buffer, vTextures[index].c_str()))
{
tempData->textureIndex = index;
tempFound = true;
break;
}
}
if (!tempFound)
{
vTextures.push_back(std::string(buffer));
tempData->textureIndex = vTextures.size() - 1;
}
delete[] buffer;
}
else if (!strcmp("CPOS", it->name))
{
readVertex(tempData, it->position);
}
else if (!strcmp("CUV0", it->name))
{
readUV(tempData, it->position);
}
else if (!strcmp("CMSH", it->name))
{
// jump to the data section and read the size;
std::uint32_t tempSize;
fsMesh.seekg(it->position);
fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
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std::vector<uint32_t> tempPoly;
// for every triangle..
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for (unsigned int i = 0; i < tempSize * 3; i += 3)
{
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tempPoly.clear();
// ..get the 3 indices and save them
for (int j = 0; j < 3; j++)
{
std::uint32_t tempValue;
fsMesh.read(reinterpret_cast<char*>(&tempValue), sizeof(std::uint32_t));
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tempPoly.push_back(tempValue);
}
tempData->meshIndices.push_back(tempPoly);
}
}
}
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dataDestination->segmLst.push_back(tempData);
}
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void Object::readVertex(Segment* dataDestination, std::streampos position)
{
std::uint32_t tempSize;
fsMesh.seekg(position);
fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
dataDestination->vertex = new float[tempSize * 3];
for (unsigned int i = 0; i < tempSize * 3; i++)
fsMesh.read(reinterpret_cast<char*>(&dataDestination->vertex[i]), sizeof(float));
}
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void Object::readUV(Segment* dataDestination, std::streampos position)
{
std::uint32_t tempSize;
fsMesh.seekg(position);
fsMesh.read(reinterpret_cast<char*>(&tempSize), sizeof(tempSize));
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));
}
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void Object::quat2eul(float &quat0, float &quat1, float & quat2, float &quat3)
{
float ysqr = quat1 * quat1;
float t0 = -2.0f * (ysqr + quat2 * quat2) + 1.0f;
float t1 = +2.0f * (quat0 * quat1 - quat3 * quat2);
float t2 = -2.0f * (quat0 * quat2 + quat3 * quat1);
float t3 = +2.0f * (quat1 * quat2 - quat3 * quat0);
float t4 = -2.0f * (quat0 * quat0 + ysqr) + 1.0f;
t2 = t2 > 1.0f ? 1.0f : t2;
t2 = t2 < -1.0f ? -1.0f : t2;
quat1 = std::asin(t2);
quat0 = std::atan2(t3, t4);
quat2 = std::atan2(t1, t0);
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}
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/////////////////////////////////////////////////////////////////////////
// public getter
std::vector<Modl*>* Object::getModels() const
{
return vModls;
}
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std::vector<std::string> Object::getTextureList() const
{
return vTextures;
}
Bbox Object::getBoundgBox() const
{
return boundingBox;
}
/////////////////////////////////////////////////////////////////////////
// public functions