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Merging r5975 through r6036 from trunk to ogl-es branch.
GLES drivers adapted, but only did make compile-tests. git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6038 dfc29bdd-3216-0410-991c-e03cc46cb475
This commit is contained in:
cutealien
974
source/Irrlicht/COBJMeshFileLoader.cpp
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974
source/Irrlicht/COBJMeshFileLoader.cpp
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@ -0,0 +1,974 @@
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// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "IrrCompileConfig.h"
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#ifdef _IRR_COMPILE_WITH_OBJ_LOADER_
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#include "COBJMeshFileLoader.h"
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#include "CMeshTextureLoader.h"
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#include "IMeshManipulator.h"
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#include "IVideoDriver.h"
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#include "SMesh.h"
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#include "SMeshBuffer.h"
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#include "SAnimatedMesh.h"
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#include "IReadFile.h"
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#include "IAttributes.h"
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#include "fast_atof.h"
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#include "coreutil.h"
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#include "os.h"
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namespace irr
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{
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namespace scene
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{
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#ifdef _DEBUG
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#define _IRR_DEBUG_OBJ_LOADER_
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#endif
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static const u32 WORD_BUFFER_LENGTH = 512;
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//! Constructor
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COBJMeshFileLoader::COBJMeshFileLoader(scene::ISceneManager* smgr, io::IFileSystem* fs)
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: SceneManager(smgr), FileSystem(fs)
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{
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#ifdef _DEBUG
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setDebugName("COBJMeshFileLoader");
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#endif
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if (FileSystem)
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FileSystem->grab();
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TextureLoader = new CMeshTextureLoader( FileSystem, SceneManager->getVideoDriver() );
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}
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//! destructor
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COBJMeshFileLoader::~COBJMeshFileLoader()
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{
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if (FileSystem)
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FileSystem->drop();
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}
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//! returns true if the file maybe is able to be loaded by this class
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//! based on the file extension (e.g. ".bsp")
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bool COBJMeshFileLoader::isALoadableFileExtension(const io::path& filename) const
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{
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return core::hasFileExtension ( filename, "obj" );
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}
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//! creates/loads an animated mesh from the file.
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//! \return Pointer to the created mesh. Returns 0 if loading failed.
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//! If you no longer need the mesh, you should call IAnimatedMesh::drop().
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//! See IReferenceCounted::drop() for more information.
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IAnimatedMesh* COBJMeshFileLoader::createMesh(io::IReadFile* file)
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{
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if (!file)
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return 0;
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if ( getMeshTextureLoader() )
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getMeshTextureLoader()->setMeshFile(file);
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const long filesize = file->getSize();
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if (!filesize)
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return 0;
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const u32 WORD_BUFFER_LENGTH = 512;
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core::array<core::vector3df, core::irrAllocatorFast<core::vector3df> > vertexBuffer(1000);
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core::array<core::vector3df, core::irrAllocatorFast<core::vector3df> > normalsBuffer(1000);
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core::array<core::vector2df, core::irrAllocatorFast<core::vector2df> > textureCoordBuffer(1000);
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SObjMtl * currMtl = new SObjMtl();
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Materials.push_back(currMtl);
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u32 smoothingGroup=0;
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const io::path fullName = file->getFileName();
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const io::path relPath = FileSystem->getFileDir(fullName)+"/";
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c8* buf = new c8[filesize];
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memset(buf, 0, filesize);
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file->read((void*)buf, filesize);
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const c8* const bufEnd = buf+filesize;
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// Process obj information
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const c8* bufPtr = buf;
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core::stringc grpName, mtlName;
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bool mtlChanged=false;
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bool useGroups = !SceneManager->getParameters()->getAttributeAsBool(OBJ_LOADER_IGNORE_GROUPS);
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bool useMaterials = !SceneManager->getParameters()->getAttributeAsBool(OBJ_LOADER_IGNORE_MATERIAL_FILES);
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irr::u32 lineNr = 1; // only counts non-empty lines, still useful in debugging to locate errors
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core::array<int> faceCorners;
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faceCorners.reallocate(32); // should be large enough
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const core::stringc TAG_OFF = "off";
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irr::u32 degeneratedFaces = 0;
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while(bufPtr != bufEnd)
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{
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switch(bufPtr[0])
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{
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case 'm': // mtllib (material)
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{
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if (useMaterials)
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{
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c8 name[WORD_BUFFER_LENGTH];
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bufPtr = goAndCopyNextWord(name, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
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#ifdef _IRR_DEBUG_OBJ_LOADER_
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os::Printer::log("Reading material file",name);
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#endif
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readMTL(name, relPath);
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}
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}
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break;
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case 'v': // v, vn, vt
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switch(bufPtr[1])
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{
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case ' ': // vertex
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{
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core::vector3df vec;
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bufPtr = readVec3(bufPtr, vec, bufEnd);
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vertexBuffer.push_back(vec);
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}
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break;
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case 'n': // normal
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{
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core::vector3df vec;
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bufPtr = readVec3(bufPtr, vec, bufEnd);
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normalsBuffer.push_back(vec);
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}
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break;
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case 't': // texcoord
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{
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core::vector2df vec;
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bufPtr = readUV(bufPtr, vec, bufEnd);
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textureCoordBuffer.push_back(vec);
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}
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break;
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}
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break;
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case 'g': // group name
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{
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c8 grp[WORD_BUFFER_LENGTH];
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bufPtr = goAndCopyNextWord(grp, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
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#ifdef _IRR_DEBUG_OBJ_LOADER_
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os::Printer::log("Loaded group start",grp, ELL_DEBUG);
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#endif
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if (useGroups)
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{
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if (0 != grp[0])
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grpName = grp;
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else
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grpName = "default";
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}
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mtlChanged=true;
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}
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break;
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case 's': // smoothing can be a group or off (equiv. to 0)
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{
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c8 smooth[WORD_BUFFER_LENGTH];
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bufPtr = goAndCopyNextWord(smooth, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
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#ifdef _IRR_DEBUG_OBJ_LOADER_
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os::Printer::log("Loaded smoothing group start",smooth, ELL_DEBUG);
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#endif
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if (TAG_OFF==smooth)
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smoothingGroup=0;
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else
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smoothingGroup=core::strtoul10(smooth);
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}
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break;
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case 'u': // usemtl
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// get name of material
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{
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c8 matName[WORD_BUFFER_LENGTH];
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bufPtr = goAndCopyNextWord(matName, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
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#ifdef _IRR_DEBUG_OBJ_LOADER_
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os::Printer::log("Loaded material start",matName, ELL_DEBUG);
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#endif
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mtlName=matName;
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mtlChanged=true;
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}
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break;
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case 'f': // face
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{
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c8 vertexWord[WORD_BUFFER_LENGTH]; // for retrieving vertex data
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video::S3DVertex v;
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// Assign vertex color from currently active material's diffuse color
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if (mtlChanged)
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{
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// retrieve the material
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SObjMtl *useMtl = findMtl(mtlName, grpName);
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// only change material if we found it
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if (useMtl)
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currMtl = useMtl;
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mtlChanged=false;
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}
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if (currMtl)
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v.Color = currMtl->Meshbuffer->Material.DiffuseColor;
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// get all vertices data in this face (current line of obj file)
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const core::stringc wordBuffer = copyLine(bufPtr, bufEnd);
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const c8* linePtr = wordBuffer.c_str();
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const c8* const endPtr = linePtr+wordBuffer.size();
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faceCorners.set_used(0); // fast clear
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// read in all vertices
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linePtr = goNextWord(linePtr, endPtr);
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while (0 != linePtr[0])
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{
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// Array to communicate with retrieveVertexIndices()
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// sends the buffer sizes and gets the actual indices
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// if index not set returns -1
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s32 Idx[3];
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Idx[0] = Idx[1] = Idx[2] = -1;
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// read in next vertex's data
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u32 wlength = copyWord(vertexWord, linePtr, WORD_BUFFER_LENGTH, endPtr);
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// this function will also convert obj's 1-based index to c++'s 0-based index
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retrieveVertexIndices(vertexWord, Idx, vertexWord+wlength+1, vertexBuffer.size(), textureCoordBuffer.size(), normalsBuffer.size());
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if ( -1 != Idx[0] && Idx[0] < (irr::s32)vertexBuffer.size() )
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v.Pos = vertexBuffer[Idx[0]];
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else
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{
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os::Printer::log("Invalid vertex index in this line:", wordBuffer.c_str(), ELL_ERROR);
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delete [] buf;
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return 0;
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}
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if ( -1 != Idx[1] && Idx[1] < (irr::s32)textureCoordBuffer.size() )
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v.TCoords = textureCoordBuffer[Idx[1]];
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else
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v.TCoords.set(0.0f,0.0f);
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if ( -1 != Idx[2] && Idx[2] < (irr::s32)normalsBuffer.size() )
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v.Normal = normalsBuffer[Idx[2]];
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else
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{
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v.Normal.set(0.0f,0.0f,0.0f);
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currMtl->RecalculateNormals=true;
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}
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int vertLocation;
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core::map<video::S3DVertex, int>::Node* n = currMtl->VertMap.find(v);
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if (n)
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{
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vertLocation = n->getValue();
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}
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else
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{
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currMtl->Meshbuffer->Vertices.push_back(v);
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vertLocation = currMtl->Meshbuffer->Vertices.size() -1;
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currMtl->VertMap.insert(v, vertLocation);
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}
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faceCorners.push_back(vertLocation);
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// go to next vertex
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linePtr = goNextWord(linePtr, endPtr);
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}
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// triangulate the face
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const int c = faceCorners[0];
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for ( u32 i = 1; i < faceCorners.size() - 1; ++i )
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{
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// Add a triangle
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const int a = faceCorners[i + 1];
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const int b = faceCorners[i];
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if (a != b && a != c && b != c) // ignore degenerated faces. We can get them when we merge vertices above in the VertMap.
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{
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currMtl->Meshbuffer->Indices.push_back(a);
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currMtl->Meshbuffer->Indices.push_back(b);
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currMtl->Meshbuffer->Indices.push_back(c);
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}
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else
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{
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++degeneratedFaces;
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}
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}
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}
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break;
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case '#': // comment
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default:
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break;
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} // end switch(bufPtr[0])
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// eat up rest of line
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bufPtr = goNextLine(bufPtr, bufEnd);
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++lineNr;
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} // end while(bufPtr && (bufPtr-buf<filesize))
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if ( degeneratedFaces > 0 )
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{
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irr::core::stringc log(degeneratedFaces);
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log += " degenerated faces removed in ";
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log += irr::core::stringc(fullName);
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os::Printer::log(log.c_str(), ELL_INFORMATION);
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}
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SMesh* mesh = new SMesh();
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// Combine all the groups (meshbuffers) into the mesh
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for ( u32 m = 0; m < Materials.size(); ++m )
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{
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if ( Materials[m]->Meshbuffer->getIndexCount() > 0 )
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{
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Materials[m]->Meshbuffer->recalculateBoundingBox();
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if (Materials[m]->RecalculateNormals)
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SceneManager->getMeshManipulator()->recalculateNormals(Materials[m]->Meshbuffer);
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if (Materials[m]->Meshbuffer->Material.MaterialType == video::EMT_PARALLAX_MAP_SOLID)
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{
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SMesh tmp;
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tmp.addMeshBuffer(Materials[m]->Meshbuffer);
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IMesh* tangentMesh = SceneManager->getMeshManipulator()->createMeshWithTangents(&tmp);
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mesh->addMeshBuffer(tangentMesh->getMeshBuffer(0));
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tangentMesh->drop();
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}
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else
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mesh->addMeshBuffer( Materials[m]->Meshbuffer );
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}
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}
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// Create the Animated mesh if there's anything in the mesh
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SAnimatedMesh* animMesh = 0;
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if ( 0 != mesh->getMeshBufferCount() )
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{
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mesh->recalculateBoundingBox();
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animMesh = new SAnimatedMesh();
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animMesh->Type = EAMT_OBJ;
|
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animMesh->addMesh(mesh);
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animMesh->recalculateBoundingBox();
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}
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// Clean up the allocate obj file contents
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delete [] buf;
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// more cleaning up
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cleanUp();
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mesh->drop();
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return animMesh;
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}
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const c8* COBJMeshFileLoader::readTextures(const c8* bufPtr, const c8* const bufEnd, SObjMtl* currMaterial, const io::path& relPath)
|
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{
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u8 type=0; // map_Kd - diffuse color texture map
|
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// map_Ks - specular color texture map
|
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// map_Ka - ambient color texture map
|
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// map_Ns - shininess texture map
|
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if ((!strncmp(bufPtr,"map_bump",8)) || (!strncmp(bufPtr,"bump",4)))
|
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type=1; // normal map
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else if ((!strncmp(bufPtr,"map_d",5)) || (!strncmp(bufPtr,"map_opacity",11)))
|
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type=2; // opacity map
|
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else if (!strncmp(bufPtr,"map_refl",8))
|
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type=3; // reflection map
|
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// extract new material's name
|
||||
c8 textureNameBuf[WORD_BUFFER_LENGTH];
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
|
||||
f32 bumpiness = 6.0f;
|
||||
bool clamp = false;
|
||||
core::vector3df tscale(1.f); //For map_Kd texture scaling
|
||||
core::vector3df tpos(0.f); //For map_Kd texture translation
|
||||
// handle options
|
||||
while (textureNameBuf[0]=='-')
|
||||
{
|
||||
if (!strncmp(bufPtr,"-bm",3))
|
||||
{
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
currMaterial->Meshbuffer->Material.MaterialTypeParam=core::fast_atof(textureNameBuf);
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
continue;
|
||||
}
|
||||
else
|
||||
if (!strncmp(bufPtr,"-blendu",7))
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
else
|
||||
if (!strncmp(bufPtr,"-blendv",7))
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
else
|
||||
if (!strncmp(bufPtr,"-cc",3))
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
else
|
||||
if (!strncmp(bufPtr,"-clamp",6))
|
||||
bufPtr = readBool(bufPtr, clamp, bufEnd);
|
||||
else
|
||||
if (!strncmp(bufPtr,"-texres",7))
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
else
|
||||
if (!strncmp(bufPtr,"-type",5))
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
else
|
||||
if (!strncmp(bufPtr,"-mm",3))
|
||||
{
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
}
|
||||
else
|
||||
if (!strncmp(bufPtr,"-o",2)) // texture coord translation
|
||||
{
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
if (core::isdigit(textureNameBuf[0]) || (textureNameBuf[0] == '-' && core::isdigit(textureNameBuf[1])))
|
||||
tpos.X = core::fast_atof(textureNameBuf);
|
||||
|
||||
// next parameters are optional, so skip rest of loop if no number is found
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
if (!(core::isdigit(textureNameBuf[0]) || (textureNameBuf[0] == '-' && core::isdigit(textureNameBuf[1]))))
|
||||
continue;
|
||||
tpos.Y = core::fast_atof(textureNameBuf);
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
if (!(core::isdigit(textureNameBuf[0]) || (textureNameBuf[0] == '-' && core::isdigit(textureNameBuf[1]))))
|
||||
continue;
|
||||
tpos.Z = core::fast_atof(textureNameBuf);
|
||||
}
|
||||
else
|
||||
if (!strncmp(bufPtr,"-s",2)) // texture coord scale
|
||||
{
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
if (core::isdigit(textureNameBuf[0]) || (textureNameBuf[0] == '-' && core::isdigit(textureNameBuf[1])))
|
||||
tscale.X = core::fast_atof(textureNameBuf);
|
||||
|
||||
// next parameters are optional, so skip rest of loop if no number is found
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
if (!(core::isdigit(textureNameBuf[0]) || (textureNameBuf[0] == '-' && core::isdigit(textureNameBuf[1]))))
|
||||
continue;
|
||||
tscale.Y = core::fast_atof(textureNameBuf);
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
if (!(core::isdigit(textureNameBuf[0]) || (textureNameBuf[0] == '-' && core::isdigit(textureNameBuf[1]))))
|
||||
continue;
|
||||
tscale.Z = core::fast_atof(textureNameBuf);
|
||||
}
|
||||
else
|
||||
if (!strncmp(bufPtr,"-t",2))
|
||||
{
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
// next parameters are optional, so skip rest of loop if no number is found
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
if (!(core::isdigit(textureNameBuf[0]) || (textureNameBuf[0] == '-' && core::isdigit(textureNameBuf[1]))))
|
||||
continue;
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
if (!(core::isdigit(textureNameBuf[0]) || (textureNameBuf[0] == '-' && core::isdigit(textureNameBuf[1]))))
|
||||
continue;
|
||||
}
|
||||
// get next word
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
}
|
||||
|
||||
if ((type==1) && (core::isdigit(textureNameBuf[0])))
|
||||
{
|
||||
currMaterial->Meshbuffer->Material.MaterialTypeParam=core::fast_atof(textureNameBuf);
|
||||
bufPtr = goAndCopyNextWord(textureNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
}
|
||||
if (clamp)
|
||||
currMaterial->Meshbuffer->Material.setFlag(video::EMF_TEXTURE_WRAP, video::ETC_CLAMP);
|
||||
|
||||
io::path texname(textureNameBuf);
|
||||
if (texname.size() && getMeshTextureLoader())
|
||||
{
|
||||
video::ITexture * texture = getMeshTextureLoader()->getTexture(texname);
|
||||
if ( texture )
|
||||
{
|
||||
if (type==0)
|
||||
{
|
||||
currMaterial->Meshbuffer->Material.setTexture(0, texture);
|
||||
bool needsTextureMatrix = tscale != core::vector3df(1.f) || tpos != core::vector3df(0.f);
|
||||
if (needsTextureMatrix)
|
||||
{
|
||||
currMaterial->Meshbuffer->Material.getTextureMatrix(0).setTextureScale(tscale.X, tscale.Y);
|
||||
currMaterial->Meshbuffer->Material.getTextureMatrix(0).setTextureTranslate(tpos.X, tpos.Y);
|
||||
}
|
||||
}
|
||||
else if (type==1)
|
||||
{
|
||||
if ( texture->getSource() == video::ETS_FROM_FILE)
|
||||
SceneManager->getVideoDriver()->makeNormalMapTexture(texture, bumpiness);
|
||||
currMaterial->Meshbuffer->Material.setTexture(1, texture);
|
||||
currMaterial->Meshbuffer->Material.MaterialType=video::EMT_PARALLAX_MAP_SOLID;
|
||||
currMaterial->Meshbuffer->Material.MaterialTypeParam=0.035f;
|
||||
}
|
||||
else if (type==2)
|
||||
{
|
||||
currMaterial->Meshbuffer->Material.setTexture(0, texture);
|
||||
currMaterial->Meshbuffer->Material.MaterialType=video::EMT_TRANSPARENT_ADD_COLOR;
|
||||
}
|
||||
else if (type==3)
|
||||
{
|
||||
// currMaterial->Meshbuffer->Material.Textures[1] = texture;
|
||||
// currMaterial->Meshbuffer->Material.MaterialType=video::EMT_REFLECTION_2_LAYER;
|
||||
}
|
||||
// Set diffuse material color to white so as not to affect texture color
|
||||
// Because Maya set diffuse color Kd to black when you use a diffuse color map
|
||||
// But is this the right thing to do?
|
||||
currMaterial->Meshbuffer->Material.DiffuseColor.set(
|
||||
currMaterial->Meshbuffer->Material.DiffuseColor.getAlpha(), 255, 255, 255 );
|
||||
}
|
||||
}
|
||||
return bufPtr;
|
||||
}
|
||||
|
||||
|
||||
void COBJMeshFileLoader::readMTL(const c8* fileName, const io::path& relPath)
|
||||
{
|
||||
const io::path realFile(fileName);
|
||||
io::IReadFile * mtlReader;
|
||||
|
||||
if (FileSystem->existFile(realFile))
|
||||
mtlReader = FileSystem->createAndOpenFile(realFile);
|
||||
else if (FileSystem->existFile(relPath + realFile))
|
||||
mtlReader = FileSystem->createAndOpenFile(relPath + realFile);
|
||||
else if (FileSystem->existFile(FileSystem->getFileBasename(realFile)))
|
||||
mtlReader = FileSystem->createAndOpenFile(FileSystem->getFileBasename(realFile));
|
||||
else
|
||||
mtlReader = FileSystem->createAndOpenFile(relPath + FileSystem->getFileBasename(realFile));
|
||||
if (!mtlReader) // fail to open and read file
|
||||
{
|
||||
os::Printer::log("Could not open material file", realFile, ELL_WARNING);
|
||||
return;
|
||||
}
|
||||
|
||||
if ( getMeshTextureLoader() )
|
||||
{
|
||||
getMeshTextureLoader()->setMaterialFile(mtlReader);
|
||||
if ( SceneManager->getParameters()->existsAttribute(OBJ_TEXTURE_PATH) )
|
||||
getMeshTextureLoader()->setTexturePath(SceneManager->getParameters()->getAttributeAsString(OBJ_TEXTURE_PATH));
|
||||
}
|
||||
|
||||
const long filesize = mtlReader->getSize();
|
||||
if (!filesize)
|
||||
{
|
||||
os::Printer::log("Skipping empty material file", realFile, ELL_WARNING);
|
||||
mtlReader->drop();
|
||||
return;
|
||||
}
|
||||
|
||||
c8* buf = new c8[filesize];
|
||||
mtlReader->read((void*)buf, filesize);
|
||||
const c8* bufEnd = buf+filesize;
|
||||
|
||||
SObjMtl* currMaterial = 0;
|
||||
|
||||
const c8* bufPtr = buf;
|
||||
while(bufPtr != bufEnd)
|
||||
{
|
||||
switch(*bufPtr)
|
||||
{
|
||||
case 'n': // newmtl
|
||||
{
|
||||
// if there's an existing material, store it first
|
||||
if ( currMaterial )
|
||||
Materials.push_back( currMaterial );
|
||||
|
||||
// extract new material's name
|
||||
c8 mtlNameBuf[WORD_BUFFER_LENGTH];
|
||||
bufPtr = goAndCopyNextWord(mtlNameBuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
|
||||
currMaterial = new SObjMtl;
|
||||
currMaterial->Name = mtlNameBuf;
|
||||
}
|
||||
break;
|
||||
case 'i': // illum - illumination
|
||||
if ( currMaterial )
|
||||
{
|
||||
const u32 COLOR_BUFFER_LENGTH = 16;
|
||||
c8 illumStr[COLOR_BUFFER_LENGTH];
|
||||
|
||||
bufPtr = goAndCopyNextWord(illumStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
currMaterial->Illumination = (c8)atol(illumStr);
|
||||
}
|
||||
break;
|
||||
case 'N':
|
||||
if ( currMaterial )
|
||||
{
|
||||
switch(bufPtr[1])
|
||||
{
|
||||
case 's': // Ns - shininess
|
||||
{
|
||||
const u32 COLOR_BUFFER_LENGTH = 16;
|
||||
c8 nsStr[COLOR_BUFFER_LENGTH];
|
||||
|
||||
bufPtr = goAndCopyNextWord(nsStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
f32 shininessValue = core::fast_atof(nsStr);
|
||||
|
||||
// wavefront shininess is from [0, 1000], so scale for OpenGL
|
||||
shininessValue *= 0.128f;
|
||||
currMaterial->Meshbuffer->Material.Shininess = shininessValue;
|
||||
}
|
||||
break;
|
||||
case 'i': // Ni - refraction index
|
||||
{
|
||||
c8 tmpbuf[WORD_BUFFER_LENGTH];
|
||||
bufPtr = goAndCopyNextWord(tmpbuf, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 'K':
|
||||
if ( currMaterial )
|
||||
{
|
||||
switch(bufPtr[1])
|
||||
{
|
||||
case 'd': // Kd = diffuse
|
||||
{
|
||||
bufPtr = readColor(bufPtr, currMaterial->Meshbuffer->Material.DiffuseColor, bufEnd);
|
||||
|
||||
}
|
||||
break;
|
||||
|
||||
case 's': // Ks = specular
|
||||
{
|
||||
bufPtr = readColor(bufPtr, currMaterial->Meshbuffer->Material.SpecularColor, bufEnd);
|
||||
}
|
||||
break;
|
||||
|
||||
case 'a': // Ka = ambience
|
||||
{
|
||||
bufPtr=readColor(bufPtr, currMaterial->Meshbuffer->Material.AmbientColor, bufEnd);
|
||||
}
|
||||
break;
|
||||
case 'e': // Ke = emissive
|
||||
{
|
||||
currMaterial->Meshbuffer->Material.EmissiveColor.setAlpha(255);
|
||||
bufPtr=readColor(bufPtr, currMaterial->Meshbuffer->Material.EmissiveColor, bufEnd);
|
||||
}
|
||||
break;
|
||||
} // end switch(bufPtr[1])
|
||||
} // end case 'K': if ( 0 != currMaterial )...
|
||||
break;
|
||||
case 'b': // bump
|
||||
case 'm': // texture maps
|
||||
if (currMaterial)
|
||||
{
|
||||
bufPtr=readTextures(bufPtr, bufEnd, currMaterial, relPath);
|
||||
}
|
||||
break;
|
||||
case 'd': // d - transparency
|
||||
if ( currMaterial )
|
||||
{
|
||||
const u32 COLOR_BUFFER_LENGTH = 16;
|
||||
c8 dStr[COLOR_BUFFER_LENGTH];
|
||||
|
||||
bufPtr = goAndCopyNextWord(dStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
f32 dValue = core::fast_atof(dStr);
|
||||
|
||||
currMaterial->Meshbuffer->Material.DiffuseColor.setAlpha( (s32)(dValue * 255) );
|
||||
if (dValue<1.0f)
|
||||
currMaterial->Meshbuffer->Material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
|
||||
}
|
||||
break;
|
||||
case 'T':
|
||||
if ( currMaterial )
|
||||
{
|
||||
switch ( bufPtr[1] )
|
||||
{
|
||||
case 'f': // Tf - Transmitivity
|
||||
const u32 COLOR_BUFFER_LENGTH = 16;
|
||||
c8 redStr[COLOR_BUFFER_LENGTH];
|
||||
c8 greenStr[COLOR_BUFFER_LENGTH];
|
||||
c8 blueStr[COLOR_BUFFER_LENGTH];
|
||||
|
||||
bufPtr = goAndCopyNextWord(redStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
bufPtr = goAndCopyNextWord(greenStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
bufPtr = goAndCopyNextWord(blueStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
|
||||
f32 transparency = ( core::fast_atof(redStr) + core::fast_atof(greenStr) + core::fast_atof(blueStr) ) / 3;
|
||||
|
||||
currMaterial->Meshbuffer->Material.DiffuseColor.setAlpha( (s32)(transparency * 255) );
|
||||
if (transparency < 1.0f)
|
||||
currMaterial->Meshbuffer->Material.MaterialType = video::EMT_TRANSPARENT_VERTEX_ALPHA;
|
||||
}
|
||||
}
|
||||
break;
|
||||
default: // comments or not recognised
|
||||
break;
|
||||
} // end switch(bufPtr[0])
|
||||
// go to next line
|
||||
bufPtr = goNextLine(bufPtr, bufEnd);
|
||||
} // end while (bufPtr)
|
||||
|
||||
// end of file. if there's an existing material, store it
|
||||
if ( currMaterial )
|
||||
Materials.push_back( currMaterial );
|
||||
|
||||
delete [] buf;
|
||||
mtlReader->drop();
|
||||
}
|
||||
|
||||
|
||||
//! Read RGB color
|
||||
const c8* COBJMeshFileLoader::readColor(const c8* bufPtr, video::SColor& color, const c8* const bufEnd)
|
||||
{
|
||||
const u32 COLOR_BUFFER_LENGTH = 16;
|
||||
c8 colStr[COLOR_BUFFER_LENGTH];
|
||||
|
||||
bufPtr = goAndCopyNextWord(colStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
color.setRed((s32)(core::fast_atof(colStr) * 255.0f));
|
||||
bufPtr = goAndCopyNextWord(colStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
color.setGreen((s32)(core::fast_atof(colStr) * 255.0f));
|
||||
bufPtr = goAndCopyNextWord(colStr, bufPtr, COLOR_BUFFER_LENGTH, bufEnd);
|
||||
color.setBlue((s32)(core::fast_atof(colStr) * 255.0f));
|
||||
return bufPtr;
|
||||
}
|
||||
|
||||
|
||||
//! Read 3d vector of floats
|
||||
const c8* COBJMeshFileLoader::readVec3(const c8* bufPtr, core::vector3df& vec, const c8* const bufEnd)
|
||||
{
|
||||
const u32 WORD_BUFFER_LENGTH = 256;
|
||||
c8 wordBuffer[WORD_BUFFER_LENGTH];
|
||||
|
||||
bufPtr = goAndCopyNextWord(wordBuffer, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
vec.X=-core::fast_atof(wordBuffer); // change handedness
|
||||
bufPtr = goAndCopyNextWord(wordBuffer, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
vec.Y=core::fast_atof(wordBuffer);
|
||||
bufPtr = goAndCopyNextWord(wordBuffer, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
vec.Z=core::fast_atof(wordBuffer);
|
||||
return bufPtr;
|
||||
}
|
||||
|
||||
|
||||
//! Read 2d vector of floats
|
||||
const c8* COBJMeshFileLoader::readUV(const c8* bufPtr, core::vector2df& vec, const c8* const bufEnd)
|
||||
{
|
||||
const u32 WORD_BUFFER_LENGTH = 256;
|
||||
c8 wordBuffer[WORD_BUFFER_LENGTH];
|
||||
|
||||
bufPtr = goAndCopyNextWord(wordBuffer, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
vec.X=core::fast_atof(wordBuffer);
|
||||
bufPtr = goAndCopyNextWord(wordBuffer, bufPtr, WORD_BUFFER_LENGTH, bufEnd);
|
||||
vec.Y=1-core::fast_atof(wordBuffer); // change handedness
|
||||
return bufPtr;
|
||||
}
|
||||
|
||||
|
||||
//! Read boolean value represented as 'on' or 'off'
|
||||
const c8* COBJMeshFileLoader::readBool(const c8* bufPtr, bool& tf, const c8* const bufEnd)
|
||||
{
|
||||
const u32 BUFFER_LENGTH = 8;
|
||||
c8 tfStr[BUFFER_LENGTH];
|
||||
|
||||
bufPtr = goAndCopyNextWord(tfStr, bufPtr, BUFFER_LENGTH, bufEnd);
|
||||
tf = strcmp(tfStr, "off") != 0;
|
||||
return bufPtr;
|
||||
}
|
||||
|
||||
|
||||
COBJMeshFileLoader::SObjMtl* COBJMeshFileLoader::findMtl(const core::stringc& mtlName, const core::stringc& grpName)
|
||||
{
|
||||
COBJMeshFileLoader::SObjMtl* defMaterial = 0;
|
||||
// search existing Materials for best match
|
||||
// exact match does return immediately, only name match means a new group
|
||||
for (u32 i = 0; i < Materials.size(); ++i)
|
||||
{
|
||||
if ( Materials[i]->Name == mtlName )
|
||||
{
|
||||
if ( Materials[i]->Group == grpName )
|
||||
return Materials[i];
|
||||
else
|
||||
defMaterial = Materials[i];
|
||||
}
|
||||
}
|
||||
// we found a partial match
|
||||
if (defMaterial)
|
||||
{
|
||||
Materials.push_back(new SObjMtl(*defMaterial));
|
||||
Materials.getLast()->Group = grpName;
|
||||
return Materials.getLast();
|
||||
}
|
||||
// we found a new group for a non-existant material
|
||||
else if (grpName.size())
|
||||
{
|
||||
Materials.push_back(new SObjMtl(*Materials[0]));
|
||||
Materials.getLast()->Group = grpName;
|
||||
return Materials.getLast();
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
//! skip space characters and stop on first non-space
|
||||
const c8* COBJMeshFileLoader::goFirstWord(const c8* buf, const c8* const bufEnd, bool acrossNewlines)
|
||||
{
|
||||
// skip space characters
|
||||
if (acrossNewlines)
|
||||
while((buf != bufEnd) && core::isspace(*buf))
|
||||
++buf;
|
||||
else
|
||||
while((buf != bufEnd) && core::isspace(*buf) && (*buf != '\n'))
|
||||
++buf;
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
|
||||
//! skip current word and stop at beginning of next one
|
||||
const c8* COBJMeshFileLoader::goNextWord(const c8* buf, const c8* const bufEnd, bool acrossNewlines)
|
||||
{
|
||||
// skip current word
|
||||
while(( buf != bufEnd ) && !core::isspace(*buf))
|
||||
++buf;
|
||||
|
||||
return goFirstWord(buf, bufEnd, acrossNewlines);
|
||||
}
|
||||
|
||||
|
||||
//! Read until line break is reached and stop at the next non-space character
|
||||
const c8* COBJMeshFileLoader::goNextLine(const c8* buf, const c8* const bufEnd)
|
||||
{
|
||||
// look for newline characters
|
||||
while(buf != bufEnd)
|
||||
{
|
||||
// found it, so leave
|
||||
if (*buf=='\n' || *buf=='\r')
|
||||
break;
|
||||
++buf;
|
||||
}
|
||||
return goFirstWord(buf, bufEnd);
|
||||
}
|
||||
|
||||
|
||||
u32 COBJMeshFileLoader::copyWord(c8* outBuf, const c8* const inBuf, u32 outBufLength, const c8* const bufEnd)
|
||||
{
|
||||
if (!outBufLength)
|
||||
return 0;
|
||||
if (!inBuf)
|
||||
{
|
||||
*outBuf = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
u32 i = 0;
|
||||
while(inBuf[i])
|
||||
{
|
||||
if (core::isspace(inBuf[i]) || &(inBuf[i]) == bufEnd)
|
||||
break;
|
||||
++i;
|
||||
}
|
||||
|
||||
u32 length = core::min_(i, outBufLength-1);
|
||||
for (u32 j=0; j<length; ++j)
|
||||
outBuf[j] = inBuf[j];
|
||||
|
||||
outBuf[length] = 0;
|
||||
return length;
|
||||
}
|
||||
|
||||
|
||||
core::stringc COBJMeshFileLoader::copyLine(const c8* inBuf, const c8* bufEnd)
|
||||
{
|
||||
if (!inBuf)
|
||||
return core::stringc();
|
||||
|
||||
const c8* ptr = inBuf;
|
||||
while (ptr<bufEnd)
|
||||
{
|
||||
if (*ptr=='\n' || *ptr=='\r')
|
||||
break;
|
||||
++ptr;
|
||||
}
|
||||
// we must avoid the +1 in case the array is used up
|
||||
return core::stringc(inBuf, (u32)(ptr-inBuf+((ptr < bufEnd) ? 1 : 0)));
|
||||
}
|
||||
|
||||
|
||||
const c8* COBJMeshFileLoader::goAndCopyNextWord(c8* outBuf, const c8* inBuf, u32 outBufLength, const c8* bufEnd)
|
||||
{
|
||||
inBuf = goNextWord(inBuf, bufEnd, false);
|
||||
copyWord(outBuf, inBuf, outBufLength, bufEnd);
|
||||
return inBuf;
|
||||
}
|
||||
|
||||
|
||||
bool COBJMeshFileLoader::retrieveVertexIndices(c8* vertexData, s32* idx, const c8* bufEnd, u32 vbsize, u32 vtsize, u32 vnsize)
|
||||
{
|
||||
c8 word[16] = "";
|
||||
const c8* p = goFirstWord(vertexData, bufEnd);
|
||||
u32 idxType = 0; // 0 = posIdx, 1 = texcoordIdx, 2 = normalIdx
|
||||
|
||||
u32 i = 0;
|
||||
while ( p != bufEnd )
|
||||
{
|
||||
if ( ( core::isdigit(*p)) || (*p == '-') )
|
||||
{
|
||||
// build up the number
|
||||
word[i++] = *p;
|
||||
}
|
||||
else if ( *p == '/' || *p == ' ' || *p == '\0' )
|
||||
{
|
||||
// number is completed. Convert and store it
|
||||
word[i] = '\0';
|
||||
// if no number was found index will become 0 and later on -1 by decrement
|
||||
idx[idxType] = core::strtol10(word);
|
||||
if (idx[idxType]<0)
|
||||
{
|
||||
switch (idxType)
|
||||
{
|
||||
case 0:
|
||||
idx[idxType] += vbsize;
|
||||
break;
|
||||
case 1:
|
||||
idx[idxType] += vtsize;
|
||||
break;
|
||||
case 2:
|
||||
idx[idxType] += vnsize;
|
||||
break;
|
||||
}
|
||||
}
|
||||
else
|
||||
idx[idxType]-=1;
|
||||
|
||||
// reset the word
|
||||
word[0] = '\0';
|
||||
i = 0;
|
||||
|
||||
// go to the next kind of index type
|
||||
if (*p == '/')
|
||||
{
|
||||
if ( ++idxType > 2 )
|
||||
{
|
||||
// error checking, shouldn't reach here unless file is wrong
|
||||
idxType = 0;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// set all missing values to disable (=-1)
|
||||
while (++idxType < 3)
|
||||
idx[idxType]=-1;
|
||||
++p;
|
||||
break; // while
|
||||
}
|
||||
}
|
||||
|
||||
// go to the next char
|
||||
++p;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
void COBJMeshFileLoader::cleanUp()
|
||||
{
|
||||
for (u32 i=0; i < Materials.size(); ++i )
|
||||
{
|
||||
Materials[i]->Meshbuffer->drop();
|
||||
delete Materials[i];
|
||||
}
|
||||
|
||||
Materials.clear();
|
||||
}
|
||||
|
||||
|
||||
} // end namespace scene
|
||||
} // end namespace irr
|
||||
|
||||
#endif // _IRR_COMPILE_WITH_OBJ_LOADER_
|
||||
|
||||
Reference in New Issue
Block a user