assimp/code/UnrealLoader.cpp

447 lines
15 KiB
C++

/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------
Copyright (c) 2006-2012, assimp team
All rights reserved.
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following disclaimer.
* Redistributions in binary form must reproduce the above
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following disclaimer in the documentation and/or other
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* Neither the name of the assimp team, nor the names of its
contributors may be used to endorse or promote products
derived from this software without specific prior
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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*/
/** @file UnrealLoader.cpp
* @brief Implementation of the UNREAL (*.3D) importer class
*
* Sources:
* http://local.wasp.uwa.edu.au/~pbourke/dataformats/unreal/
*/
#ifndef ASSIMP_BUILD_NO_3D_IMPORTER
#include "UnrealLoader.h"
#include "StreamReader.h"
#include "ParsingUtils.h"
#include "fast_atof.h"
#include "ConvertToLHProcess.h"
#include <assimp/Importer.hpp>
#include <assimp/DefaultLogger.hpp>
#include <assimp/IOSystem.hpp>
#include <assimp/scene.h>
#include <boost/scoped_ptr.hpp>
using namespace Assimp;
static const aiImporterDesc desc = {
"Unreal Mesh Importer",
"",
"",
"",
aiImporterFlags_SupportTextFlavour,
0,
0,
0,
0,
"3d uc"
};
// ------------------------------------------------------------------------------------------------
// Constructor to be privately used by Importer
UnrealImporter::UnrealImporter()
: configFrameID (0)
, configHandleFlags (true)
{}
// ------------------------------------------------------------------------------------------------
// Destructor, private as well
UnrealImporter::~UnrealImporter()
{}
// ------------------------------------------------------------------------------------------------
// Returns whether the class can handle the format of the given file.
bool UnrealImporter::CanRead( const std::string& pFile, IOSystem* /*pIOHandler*/, bool /*checkSig*/) const
{
return SimpleExtensionCheck(pFile,"3d","uc");
}
// ------------------------------------------------------------------------------------------------
// Build a string of all file extensions supported
const aiImporterDesc* UnrealImporter::GetInfo () const
{
return &desc;
}
// ------------------------------------------------------------------------------------------------
// Setup configuration properties for the loader
void UnrealImporter::SetupProperties(const Importer* pImp)
{
// The
// AI_CONFIG_IMPORT_UNREAL_KEYFRAME option overrides the
// AI_CONFIG_IMPORT_GLOBAL_KEYFRAME option.
configFrameID = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_UNREAL_KEYFRAME,-1);
if(static_cast<unsigned int>(-1) == configFrameID) {
configFrameID = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_GLOBAL_KEYFRAME,0);
}
// AI_CONFIG_IMPORT_UNREAL_HANDLE_FLAGS, default is true
configHandleFlags = (0 != pImp->GetPropertyInteger(AI_CONFIG_IMPORT_UNREAL_HANDLE_FLAGS,1));
}
// ------------------------------------------------------------------------------------------------
// Imports the given file into the given scene structure.
void UnrealImporter::InternReadFile( const std::string& pFile,
aiScene* pScene, IOSystem* pIOHandler)
{
// For any of the 3 files being passed get the three correct paths
// First of all, determine file extension
std::string::size_type pos = pFile.find_last_of('.');
std::string extension = GetExtension(pFile);
std::string d_path,a_path,uc_path;
if (extension == "3d") {
// jjjj_d.3d
// jjjj_a.3d
pos = pFile.find_last_of('_');
if (std::string::npos == pos) {
throw DeadlyImportError("UNREAL: Unexpected naming scheme");
}
extension = pFile.substr(0,pos);
}
else {
extension = pFile.substr(0,pos);
}
// build proper paths
d_path = extension+"_d.3d";
a_path = extension+"_a.3d";
uc_path = extension+".uc";
DefaultLogger::get()->debug("UNREAL: data file is " + d_path);
DefaultLogger::get()->debug("UNREAL: aniv file is " + a_path);
DefaultLogger::get()->debug("UNREAL: uc file is " + uc_path);
// and open the files ... we can't live without them
IOStream* p = pIOHandler->Open(d_path);
if (!p)
throw DeadlyImportError("UNREAL: Unable to open _d file");
StreamReaderLE d_reader(pIOHandler->Open(d_path));
const uint16_t numTris = d_reader.GetI2();
const uint16_t numVert = d_reader.GetI2();
d_reader.IncPtr(44);
if (!numTris || numVert < 3)
throw DeadlyImportError("UNREAL: Invalid number of vertices/triangles");
// maximum texture index
unsigned int maxTexIdx = 0;
// collect triangles
std::vector<Unreal::Triangle> triangles(numTris);
for (std::vector<Unreal::Triangle>::iterator it = triangles.begin(), end = triangles.end();it != end; ++it) {
Unreal::Triangle& tri = *it;
for (unsigned int i = 0; i < 3;++i) {
tri.mVertex[i] = d_reader.GetI2();
if (tri.mVertex[i] >= numTris) {
DefaultLogger::get()->warn("UNREAL: vertex index out of range");
tri.mVertex[i] = 0;
}
}
tri.mType = d_reader.GetI1();
// handle mesh flagss?
if (configHandleFlags)
tri.mType = Unreal::MF_NORMAL_OS;
else {
// ignore MOD and MASKED for the moment, treat them as two-sided
if (tri.mType == Unreal::MF_NORMAL_MOD_TS || tri.mType == Unreal::MF_NORMAL_MASKED_TS)
tri.mType = Unreal::MF_NORMAL_TS;
}
d_reader.IncPtr(1);
for (unsigned int i = 0; i < 3;++i)
for (unsigned int i2 = 0; i2 < 2;++i2)
tri.mTex[i][i2] = d_reader.GetI1();
tri.mTextureNum = d_reader.GetI1();
maxTexIdx = std::max(maxTexIdx,(unsigned int)tri.mTextureNum);
d_reader.IncPtr(1);
}
p = pIOHandler->Open(a_path);
if (!p)
throw DeadlyImportError("UNREAL: Unable to open _a file");
StreamReaderLE a_reader(pIOHandler->Open(a_path));
// read number of frames
const uint32_t numFrames = a_reader.GetI2();
if (configFrameID >= numFrames)
throw DeadlyImportError("UNREAL: The requested frame does not exist");
uint32_t st = a_reader.GetI2();
if (st != numVert*4)
throw DeadlyImportError("UNREAL: Unexpected aniv file length");
// skip to our frame
a_reader.IncPtr(configFrameID *numVert*4);
// collect vertices
std::vector<aiVector3D> vertices(numVert);
for (std::vector<aiVector3D>::iterator it = vertices.begin(), end = vertices.end(); it != end; ++it) {
int32_t val = a_reader.GetI4();
Unreal::DecompressVertex(*it,val);
}
// list of textures.
std::vector< std::pair<unsigned int, std::string> > textures;
// allocate the output scene
aiNode* nd = pScene->mRootNode = new aiNode();
nd->mName.Set("<UnrealRoot>");
// we can live without the uc file if necessary
boost::scoped_ptr<IOStream> pb (pIOHandler->Open(uc_path));
if (pb.get()) {
std::vector<char> _data;
TextFileToBuffer(pb.get(),_data);
const char* data = &_data[0];
std::vector< std::pair< std::string,std::string > > tempTextures;
// do a quick search in the UC file for some known, usually texture-related, tags
for (;*data;++data) {
if (TokenMatchI(data,"#exec",5)) {
SkipSpacesAndLineEnd(&data);
// #exec TEXTURE IMPORT [...] NAME=jjjjj [...] FILE=jjjj.pcx [...]
if (TokenMatchI(data,"TEXTURE",7)) {
SkipSpacesAndLineEnd(&data);
if (TokenMatchI(data,"IMPORT",6)) {
tempTextures.push_back(std::pair< std::string,std::string >());
std::pair< std::string,std::string >& me = tempTextures.back();
for (;!IsLineEnd(*data);++data) {
if (!::ASSIMP_strincmp(data,"NAME=",5)) {
const char *d = data+=5;
for (;!IsSpaceOrNewLine(*data);++data);
me.first = std::string(d,(size_t)(data-d));
}
else if (!::ASSIMP_strincmp(data,"FILE=",5)) {
const char *d = data+=5;
for (;!IsSpaceOrNewLine(*data);++data);
me.second = std::string(d,(size_t)(data-d));
}
}
if (!me.first.length() || !me.second.length())
tempTextures.pop_back();
}
}
// #exec MESHMAP SETTEXTURE MESHMAP=box NUM=1 TEXTURE=Jtex1
// #exec MESHMAP SCALE MESHMAP=box X=0.1 Y=0.1 Z=0.2
else if (TokenMatchI(data,"MESHMAP",7)) {
SkipSpacesAndLineEnd(&data);
if (TokenMatchI(data,"SETTEXTURE",10)) {
textures.push_back(std::pair<unsigned int, std::string>());
std::pair<unsigned int, std::string>& me = textures.back();
for (;!IsLineEnd(*data);++data) {
if (!::ASSIMP_strincmp(data,"NUM=",4)) {
data += 4;
me.first = strtoul10(data,&data);
}
else if (!::ASSIMP_strincmp(data,"TEXTURE=",8)) {
data += 8;
const char *d = data;
for (;!IsSpaceOrNewLine(*data);++data);
me.second = std::string(d,(size_t)(data-d));
// try to find matching path names, doesn't care if we don't find them
for (std::vector< std::pair< std::string,std::string > >::const_iterator it = tempTextures.begin();
it != tempTextures.end(); ++it) {
if ((*it).first == me.second) {
me.second = (*it).second;
break;
}
}
}
}
}
else if (TokenMatchI(data,"SCALE",5)) {
for (;!IsLineEnd(*data);++data) {
if (data[0] == 'X' && data[1] == '=') {
data = fast_atoreal_move<float>(data+2,(float&)nd->mTransformation.a1);
}
else if (data[0] == 'Y' && data[1] == '=') {
data = fast_atoreal_move<float>(data+2,(float&)nd->mTransformation.b2);
}
else if (data[0] == 'Z' && data[1] == '=') {
data = fast_atoreal_move<float>(data+2,(float&)nd->mTransformation.c3);
}
}
}
}
}
}
}
else {
DefaultLogger::get()->error("Unable to open .uc file");
}
std::vector<Unreal::TempMat> materials;
materials.reserve(textures.size()*2+5);
// find out how many output meshes and materials we'll have and build material indices
for (std::vector<Unreal::Triangle>::iterator it = triangles.begin(), end = triangles.end();it != end; ++it) {
Unreal::Triangle& tri = *it;
Unreal::TempMat mat(tri);
std::vector<Unreal::TempMat>::iterator nt = std::find(materials.begin(),materials.end(),mat);
if (nt == materials.end()) {
// add material
tri.matIndex = materials.size();
mat.numFaces = 1;
materials.push_back(mat);
++pScene->mNumMeshes;
}
else {
tri.matIndex = static_cast<unsigned int>(nt-materials.begin());
++nt->numFaces;
}
}
if (!pScene->mNumMeshes) {
throw DeadlyImportError("UNREAL: Unable to find valid mesh data");
}
// allocate meshes and bind them to the node graph
pScene->mMeshes = new aiMesh*[pScene->mNumMeshes];
pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials = pScene->mNumMeshes];
nd->mNumMeshes = pScene->mNumMeshes;
nd->mMeshes = new unsigned int[nd->mNumMeshes];
for (unsigned int i = 0; i < pScene->mNumMeshes;++i) {
aiMesh* m = pScene->mMeshes[i] = new aiMesh();
m->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
const unsigned int num = materials[i].numFaces;
m->mFaces = new aiFace [num];
m->mVertices = new aiVector3D [num*3];
m->mTextureCoords[0] = new aiVector3D [num*3];
nd->mMeshes[i] = i;
// create materials, too
aiMaterial* mat = new aiMaterial();
pScene->mMaterials[i] = mat;
// all white by default - texture rulez
aiColor3D color(1.f,1.f,1.f);
aiString s;
::sprintf(s.data,"mat%u_tx%u_",i,materials[i].tex);
// set the two-sided flag
if (materials[i].type == Unreal::MF_NORMAL_TS) {
const int twosided = 1;
mat->AddProperty(&twosided,1,AI_MATKEY_TWOSIDED);
::strcat(s.data,"ts_");
}
else ::strcat(s.data,"os_");
// make TRANS faces 90% opaque that RemRedundantMaterials won't catch us
if (materials[i].type == Unreal::MF_NORMAL_TRANS_TS) {
const float opac = 0.9f;
mat->AddProperty(&opac,1,AI_MATKEY_OPACITY);
::strcat(s.data,"tran_");
}
else ::strcat(s.data,"opaq_");
// a special name for the weapon attachment point
if (materials[i].type == Unreal::MF_WEAPON_PLACEHOLDER) {
s.length = ::sprintf(s.data,"$WeaponTag$");
color = aiColor3D(0.f,0.f,0.f);
}
// set color and name
mat->AddProperty(&color,1,AI_MATKEY_COLOR_DIFFUSE);
s.length = ::strlen(s.data);
mat->AddProperty(&s,AI_MATKEY_NAME);
// set texture, if any
const unsigned int tex = materials[i].tex;
for (std::vector< std::pair< unsigned int, std::string > >::const_iterator it = textures.begin();it != textures.end();++it) {
if ((*it).first == tex) {
s.Set((*it).second);
mat->AddProperty(&s,AI_MATKEY_TEXTURE_DIFFUSE(0));
break;
}
}
}
// fill them.
for (std::vector<Unreal::Triangle>::iterator it = triangles.begin(), end = triangles.end();it != end; ++it) {
Unreal::Triangle& tri = *it;
Unreal::TempMat mat(tri);
std::vector<Unreal::TempMat>::iterator nt = std::find(materials.begin(),materials.end(),mat);
aiMesh* mesh = pScene->mMeshes[nt-materials.begin()];
aiFace& f = mesh->mFaces[mesh->mNumFaces++];
f.mIndices = new unsigned int[f.mNumIndices = 3];
for (unsigned int i = 0; i < 3;++i,mesh->mNumVertices++) {
f.mIndices[i] = mesh->mNumVertices;
mesh->mVertices[mesh->mNumVertices] = vertices[ tri.mVertex[i] ];
mesh->mTextureCoords[0][mesh->mNumVertices] = aiVector3D( tri.mTex[i][0] / 255.f, 1.f - tri.mTex[i][1] / 255.f, 0.f);
}
}
// convert to RH
MakeLeftHandedProcess hero;
hero.Execute(pScene);
FlipWindingOrderProcess flipper;
flipper.Execute(pScene);
}
#endif // !! ASSIMP_BUILD_NO_3D_IMPORTER