/* --------------------------------------------------------------------------- Open Asset Import Library (ASSIMP) --------------------------------------------------------------------------- Copyright (c) 2006-2008, ASSIMP Development Team All rights reserved. Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * 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 written permission of the ASSIMP Development Team. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 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, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --------------------------------------------------------------------------- */ /** @file Implementation of the material oart of the LWO importer class */ // internal headers #include "LWOLoader.h" #include "MaterialSystem.h" #include "ByteSwap.h" // public assimp headers #include "../include/IOStream.h" #include "../include/IOSystem.h" #include "../include/aiScene.h" #include "../include/aiAssert.h" #include "../include/DefaultLogger.h" // boost headers #include using namespace Assimp; // ------------------------------------------------------------------------------------------------ void LWOImporter::ConvertMaterial(const LWO::Surface& surf,MaterialHelper* pcMat) { // copy the name of the surface aiString st; st.Set(surf.mName); pcMat->AddProperty(&st,AI_MATKEY_NAME); int i = surf.bDoubleSided ? 1 : 0; pcMat->AddProperty(&i,1,AI_MATKEY_TWOSIDED); if (surf.mSpecularValue && surf.mGlossiness) { // this is only an assumption, needs to be confirmed. // the values have been tweaked by hand and seem to be correct. float fGloss; if (mIsLWO2)fGloss = surf.mGlossiness * 0.8f; else { if (16.0f >= surf.mGlossiness)fGloss = 6.0f; else if (64.0f >= surf.mGlossiness)fGloss = 20.0f; else if (256.0f >= surf.mGlossiness)fGloss = 50.0f; else fGloss = 80.0f; } pcMat->AddProperty(&surf.mSpecularValue,1,AI_MATKEY_SHININESS_STRENGTH); pcMat->AddProperty(&fGloss,1,AI_MATKEY_SHININESS); } // (the diffuse value is just a scaling factor) aiColor3D clr = surf.mColor; clr.r *= surf.mDiffuseValue; clr.g *= surf.mDiffuseValue; clr.b *= surf.mDiffuseValue; pcMat->AddProperty(&clr,1,AI_MATKEY_COLOR_DIFFUSE); // specular color clr.b = clr.g = clr.r = surf.mSpecularValue; pcMat->AddProperty(&clr,1,AI_MATKEY_COLOR_SPECULAR); // emissive color // (luminosity is not really the same but it affects the surface in // a similar way. However, some scalings seems to be necessary) clr.g = clr.b = clr.r = surf.mLuminosity*0.8f; pcMat->AddProperty(&clr,1,AI_MATKEY_COLOR_EMISSIVE); // opacity float f = 1.0f-surf.mTransparency; pcMat->AddProperty(&f,1,AI_MATKEY_OPACITY); // now handle all textures ... // TODO } // ------------------------------------------------------------------------------------------------ void LWOImporter::LoadLWOBSurface(unsigned int size) { LE_NCONST uint8_t* const end = mFileBuffer + size; uint32_t iCursor = 0; mSurfaces->push_back( LWO::Surface () ); LWO::Surface& surf = mSurfaces->back(); LWO::Texture* pTex = NULL; ParseString(surf.mName,size); mFileBuffer+=surf.mName.length()+1; // skip one byte if the length of the surface name is odd if (!(surf.mName.length() & 1))++mFileBuffer; while (true) { if (mFileBuffer + 6 > end)break; // no proper IFF header here - the chunk length is specified as int16 uint32_t head_type = *((LE_NCONST uint32_t*)mFileBuffer);mFileBuffer+=4; uint16_t head_length = *((LE_NCONST uint16_t*)mFileBuffer);mFileBuffer+=2; AI_LSWAP4(head_type); AI_LSWAP2(head_length); if (mFileBuffer + head_length > end) { throw new ImportErrorException("LWOB: Invalid file, the size attribute of " "a surface sub chunk points behind the end of the file"); } LE_NCONST uint8_t* const next = mFileBuffer+head_length; switch (head_type) { // diffuse color case AI_LWO_COLR: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,COLR,3); surf.mColor.r = *mFileBuffer++ / 255.0f; surf.mColor.g = *mFileBuffer++ / 255.0f; surf.mColor.b = *mFileBuffer / 255.0f; break; } // diffuse strength ... case AI_LWO_DIFF: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,DIFF,2); AI_LSWAP2P(mFileBuffer); surf.mDiffuseValue = *((int16_t*)mFileBuffer) / 255.0f; break; } // specular strength ... case AI_LWO_SPEC: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,SPEC,2); AI_LSWAP2P(mFileBuffer); surf.mSpecularValue = *((int16_t*)mFileBuffer) / 255.0f; break; } // luminosity ... case AI_LWO_LUMI: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,LUMI,2); AI_LSWAP2P(mFileBuffer); surf.mLuminosity = *((int16_t*)mFileBuffer) / 255.0f; break; } // transparency case AI_LWO_TRAN: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,TRAN,2); AI_LSWAP2P(mFileBuffer); surf.mTransparency = *((int16_t*)mFileBuffer) / 255.0f; break; } // glossiness case AI_LWO_GLOS: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,GLOS,2); AI_LSWAP2P(mFileBuffer); surf.mGlossiness = float(*((int16_t*)mFileBuffer)); break; } // color texture case AI_LWO_CTEX: { pTex = &surf.mColorTexture; break; } // diffuse texture case AI_LWO_DTEX: { pTex = &surf.mDiffuseTexture; break; } // specular texture case AI_LWO_STEX: { pTex = &surf.mSpecularTexture; break; } // bump texture case AI_LWO_BTEX: { pTex = &surf.mBumpTexture; break; } // transparency texture case AI_LWO_TTEX: { pTex = &surf.mTransparencyTexture; break; } // texture path case AI_LWO_TIMG: { if (pTex) { ParseString(pTex->mFileName,head_length); AdjustTexturePath(pTex->mFileName); mFileBuffer += pTex->mFileName.length(); } else DefaultLogger::get()->warn("LWOB: TIMG tag was encuntered although " "there was no xTEX tag before"); break; } // texture strength case AI_LWO_TVAL: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,TVAL,1); if (pTex)pTex->mStrength = *mFileBuffer / 255.0f; else DefaultLogger::get()->warn("LWOB: TVAL tag was encuntered " "although there was no xTEX tag before"); break; } } mFileBuffer = next; } } // ------------------------------------------------------------------------------------------------ void LWOImporter::LoadLWO2ImageMap(unsigned int size, LWO::Texture& tex ) { LE_NCONST uint8_t* const end = mFileBuffer + size; } // ------------------------------------------------------------------------------------------------ void LWOImporter::LoadLWO2Procedural(unsigned int size, LWO::Texture& tex ) { LE_NCONST uint8_t* const end = mFileBuffer + size; } // ------------------------------------------------------------------------------------------------ void LWOImporter::LoadLWO2Gradient(unsigned int size, LWO::Texture& tex ) { LE_NCONST uint8_t* const end = mFileBuffer + size; } // ------------------------------------------------------------------------------------------------ void LWOImporter::LoadLWO2TextureHeader(unsigned int size, LWO::Texture& tex ) { LE_NCONST uint8_t* const end = mFileBuffer + size; } // ------------------------------------------------------------------------------------------------ void LWOImporter::LoadLWO2TextureBlock(uint32_t type, unsigned int size ) { LE_NCONST uint8_t* const end = mFileBuffer + size; LWO::Surface& surf = mSurfaces->back(); LWO::Texture tex; // now get the exact type of the texture } // ------------------------------------------------------------------------------------------------ void LWOImporter::LoadLWO2Surface(unsigned int size) { LE_NCONST uint8_t* const end = mFileBuffer + size; mSurfaces->push_back( LWO::Surface () ); LWO::Surface& surf = mSurfaces->back(); ParseString(surf.mName,size); mFileBuffer+=surf.mName.length()+1; // skip one byte if the length of the surface name is odd if (!(surf.mName.length() & 1))++mFileBuffer; while (true) { if (mFileBuffer + 6 > end)break; // no proper IFF header here - the chunk length is specified as int16 uint32_t head_type = *((LE_NCONST uint32_t*)mFileBuffer);mFileBuffer+=4; uint16_t head_length = *((LE_NCONST uint16_t*)mFileBuffer);mFileBuffer+=2; AI_LSWAP4(head_type); AI_LSWAP2(head_length); if (mFileBuffer + head_length > end) { throw new ImportErrorException("LWO2: Invalid file, the size attribute of " "a surface sub chunk points behind the end of the file"); } LE_NCONST uint8_t* const next = mFileBuffer+head_length; switch (head_type) { // diffuse color case AI_LWO_COLR: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,COLR,12); surf.mColor.r = ((float*)mFileBuffer)[0]; surf.mColor.g = ((float*)mFileBuffer)[1]; surf.mColor.b = ((float*)mFileBuffer)[2]; AI_LSWAP4(surf.mColor.r); AI_LSWAP4(surf.mColor.g); AI_LSWAP4(surf.mColor.b); break; } // diffuse strength ... hopefully case AI_LWO_DIFF: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,DIFF,4); surf.mDiffuseValue = *((float*)mFileBuffer); AI_LSWAP4(surf.mDiffuseValue); break; } // specular strength ... hopefully case AI_LWO_SPEC: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,SPEC,4); surf.mSpecularValue = *((float*)mFileBuffer); AI_LSWAP4(surf.mSpecularValue); break; } // transparency case AI_LWO_TRAN: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,TRAN,4); surf.mTransparency = *((float*)mFileBuffer); AI_LSWAP4(surf.mTransparency); break; } // glossiness case AI_LWO_GLOS: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,GLOS,4); surf.mGlossiness = *((float*)mFileBuffer); AI_LSWAP4(surf.mGlossiness); break; } // surface bock entry case AI_LWO_BLOK: { AI_LWO_VALIDATE_CHUNK_LENGTH(head_length,BLOK,4); uint32_t type = *((uint32_t*)mFileBuffer); AI_LSWAP4(type); switch (type) { case AI_LWO_IMAP: case AI_LWO_PROC: case AI_LWO_GRAD: mFileBuffer+=4; LoadLWO2TextureBlock(type,head_length-4); break; }; break; } } mFileBuffer = next; } } // ------------------------------------------------------------------------------------------------ bool LWOImporter::ComputeGradientTexture(LWO::GradientInfo& grad, std::vector& out) { aiTexture* tex = new aiTexture(); tex->mHeight = configGradientResY; tex->mWidth = configGradientResX; unsigned int numPixels; tex->pcData = new aiTexel[numPixels = tex->mHeight * tex->mWidth]; // to be implemented ... out.push_back(tex); return true; }