1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libs/assimp/LWSLoader.cpp	Sat Feb 01 19:58:19 2014 +0200
     1.3 @@ -0,0 +1,924 @@
     1.4 +/*
     1.5 +---------------------------------------------------------------------------
     1.6 +Open Asset Import Library (assimp)
     1.7 +---------------------------------------------------------------------------
     1.8 +
     1.9 +Copyright (c) 2006-2012, assimp team
    1.10 +
    1.11 +All rights reserved.
    1.12 +
    1.13 +Redistribution and use of this software in source and binary forms, 
    1.14 +with or without modification, are permitted provided that the following 
    1.15 +conditions are met:
    1.16 +
    1.17 +* Redistributions of source code must retain the above
    1.18 +  copyright notice, this list of conditions and the
    1.19 +  following disclaimer.
    1.20 +
    1.21 +* Redistributions in binary form must reproduce the above
    1.22 +  copyright notice, this list of conditions and the
    1.23 +  following disclaimer in the documentation and/or other
    1.24 +  materials provided with the distribution.
    1.25 +
    1.26 +* Neither the name of the assimp team, nor the names of its
    1.27 +  contributors may be used to endorse or promote products
    1.28 +  derived from this software without specific prior
    1.29 +  written permission of the assimp team.
    1.30 +
    1.31 +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
    1.32 +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
    1.33 +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    1.34 +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
    1.35 +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    1.36 +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
    1.37 +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    1.38 +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
    1.39 +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
    1.40 +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
    1.41 +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    1.42 +---------------------------------------------------------------------------
    1.43 +*/
    1.44 +
    1.45 +/** @file  LWSLoader.cpp
    1.46 + *  @brief Implementation of the LWS importer class 
    1.47 + */
    1.48 +
    1.49 +#include "AssimpPCH.h"
    1.50 +#ifndef ASSIMP_BUILD_NO_LWS_IMPORTER
    1.51 +
    1.52 +#include "LWSLoader.h"
    1.53 +#include "ParsingUtils.h"
    1.54 +#include "fast_atof.h"
    1.55 +
    1.56 +#include "SceneCombiner.h"
    1.57 +#include "GenericProperty.h"
    1.58 +#include "SkeletonMeshBuilder.h"
    1.59 +#include "ConvertToLHProcess.h"
    1.60 +#include "Importer.h"
    1.61 +
    1.62 +using namespace Assimp;
    1.63 +
    1.64 +static const aiImporterDesc desc = {
    1.65 +	"LightWave Scene Importer",
    1.66 +	"",
    1.67 +	"",
    1.68 +	"http://www.newtek.com/lightwave.html=",
    1.69 +	aiImporterFlags_SupportTextFlavour,
    1.70 +	0,
    1.71 +	0,
    1.72 +	0,
    1.73 +	0,
    1.74 +	"lws mot" 
    1.75 +};
    1.76 +
    1.77 +// ------------------------------------------------------------------------------------------------
    1.78 +// Recursive parsing of LWS files
    1.79 +void LWS::Element::Parse (const char*& buffer)
    1.80 +{
    1.81 +	for (;SkipSpacesAndLineEnd(&buffer);SkipLine(&buffer)) {
    1.82 +	
    1.83 +		// begin of a new element with children
    1.84 +		bool sub = false;
    1.85 +		if (*buffer == '{') {
    1.86 +			++buffer;
    1.87 +			SkipSpaces(&buffer);
    1.88 +			sub = true;
    1.89 +		}
    1.90 +		else if (*buffer == '}')
    1.91 +			return;
    1.92 +
    1.93 +		children.push_back(Element());
    1.94 +
    1.95 +		// copy data line - read token per token
    1.96 +
    1.97 +		const char* cur = buffer;
    1.98 +		while (!IsSpaceOrNewLine(*buffer)) ++buffer;
    1.99 +		children.back().tokens[0] = std::string(cur,(size_t) (buffer-cur));
   1.100 +		SkipSpaces(&buffer);
   1.101 +
   1.102 +		if (children.back().tokens[0] == "Plugin") 
   1.103 +		{
   1.104 +			DefaultLogger::get()->debug("LWS: Skipping over plugin-specific data");
   1.105 +
   1.106 +			// strange stuff inside Plugin/Endplugin blocks. Needn't
   1.107 +			// follow LWS syntax, so we skip over it
   1.108 +			for (;SkipSpacesAndLineEnd(&buffer);SkipLine(&buffer)) {
   1.109 +				if (!::strncmp(buffer,"EndPlugin",9)) {
   1.110 +					//SkipLine(&buffer);
   1.111 +					break;
   1.112 +				}
   1.113 +			}
   1.114 +			continue;
   1.115 +		}
   1.116 +
   1.117 +		cur = buffer;
   1.118 +		while (!IsLineEnd(*buffer)) ++buffer;
   1.119 +		children.back().tokens[1] = std::string(cur,(size_t) (buffer-cur));
   1.120 +
   1.121 +		// parse more elements recursively
   1.122 +		if (sub)
   1.123 +			children.back().Parse(buffer);
   1.124 +	}
   1.125 +}
   1.126 +
   1.127 +// ------------------------------------------------------------------------------------------------
   1.128 +// Constructor to be privately used by Importer
   1.129 +LWSImporter::LWSImporter()
   1.130 +: noSkeletonMesh()
   1.131 +{
   1.132 +	// nothing to do here
   1.133 +}
   1.134 +
   1.135 +// ------------------------------------------------------------------------------------------------
   1.136 +// Destructor, private as well 
   1.137 +LWSImporter::~LWSImporter()
   1.138 +{
   1.139 +	// nothing to do here
   1.140 +}
   1.141 +
   1.142 +// ------------------------------------------------------------------------------------------------
   1.143 +// Returns whether the class can handle the format of the given file. 
   1.144 +bool LWSImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler,bool checkSig) const
   1.145 +{
   1.146 +	const std::string extension = GetExtension(pFile);
   1.147 +	if (extension == "lws" || extension == "mot")
   1.148 +		return true;
   1.149 +
   1.150 +	// if check for extension is not enough, check for the magic tokens LWSC and LWMO
   1.151 +	if (!extension.length() || checkSig) {
   1.152 +		uint32_t tokens[2]; 
   1.153 +		tokens[0] = AI_MAKE_MAGIC("LWSC");
   1.154 +		tokens[1] = AI_MAKE_MAGIC("LWMO");
   1.155 +		return CheckMagicToken(pIOHandler,pFile,tokens,2);
   1.156 +	}
   1.157 +	return false;
   1.158 +}
   1.159 +
   1.160 +// ------------------------------------------------------------------------------------------------
   1.161 +// Get list of file extensions
   1.162 +const aiImporterDesc* LWSImporter::GetInfo () const
   1.163 +{
   1.164 +	return &desc;
   1.165 +}
   1.166 +
   1.167 +// ------------------------------------------------------------------------------------------------
   1.168 +// Setup configuration properties
   1.169 +void LWSImporter::SetupProperties(const Importer* pImp)
   1.170 +{
   1.171 +	// AI_CONFIG_FAVOUR_SPEED
   1.172 +	configSpeedFlag = (0 != pImp->GetPropertyInteger(AI_CONFIG_FAVOUR_SPEED,0));
   1.173 +
   1.174 +	// AI_CONFIG_IMPORT_LWS_ANIM_START
   1.175 +	first = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_LWS_ANIM_START,
   1.176 +		150392 /* magic hack */);
   1.177 +
   1.178 +	// AI_CONFIG_IMPORT_LWS_ANIM_END
   1.179 +	last = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_LWS_ANIM_END,
   1.180 +		150392 /* magic hack */);
   1.181 +
   1.182 +	if (last < first) {
   1.183 +		std::swap(last,first);
   1.184 +	}
   1.185 +
   1.186 +	noSkeletonMesh = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_NO_SKELETON_MESHES,0) != 0;
   1.187 +}
   1.188 +
   1.189 +// ------------------------------------------------------------------------------------------------
   1.190 +// Read an envelope description
   1.191 +void LWSImporter::ReadEnvelope(const LWS::Element& dad, LWO::Envelope& fill )
   1.192 +{
   1.193 +	if (dad.children.empty()) {
   1.194 +		DefaultLogger::get()->error("LWS: Envelope descriptions must not be empty");	
   1.195 +		return;
   1.196 +	}
   1.197 +
   1.198 +	// reserve enough storage
   1.199 +	std::list< LWS::Element >::const_iterator it = dad.children.begin();;
   1.200 +	fill.keys.reserve(strtoul10(it->tokens[1].c_str()));
   1.201 +
   1.202 +	for (++it; it != dad.children.end(); ++it) {
   1.203 +		const char* c = (*it).tokens[1].c_str();
   1.204 +
   1.205 +		if ((*it).tokens[0] == "Key") {
   1.206 +			fill.keys.push_back(LWO::Key());
   1.207 +			LWO::Key& key = fill.keys.back();
   1.208 +
   1.209 +			float f;
   1.210 +			SkipSpaces(&c);
   1.211 +			c = fast_atoreal_move<float>(c,key.value);
   1.212 +			SkipSpaces(&c);
   1.213 +			c = fast_atoreal_move<float>(c,f);
   1.214 +
   1.215 +			key.time = f;
   1.216 +
   1.217 +			unsigned int span = strtoul10(c,&c), num = 0;
   1.218 +			switch (span) {
   1.219 +			
   1.220 +				case 0:
   1.221 +					key.inter = LWO::IT_TCB;
   1.222 +					num = 5;
   1.223 +					break;
   1.224 +				case 1:
   1.225 +				case 2:
   1.226 +					key.inter = LWO::IT_HERM;
   1.227 +					num = 5;
   1.228 +					break;
   1.229 +				case 3:
   1.230 +					key.inter = LWO::IT_LINE;
   1.231 +					num = 0;
   1.232 +					break;
   1.233 +				case 4:
   1.234 +					key.inter = LWO::IT_STEP;
   1.235 +					num = 0;
   1.236 +					break;
   1.237 +				case 5:
   1.238 +					key.inter = LWO::IT_BEZ2;
   1.239 +					num = 4;
   1.240 +					break;
   1.241 +				default:
   1.242 +					DefaultLogger::get()->error("LWS: Unknown span type");
   1.243 +			}
   1.244 +			for (unsigned int i = 0; i < num;++i) {
   1.245 +				SkipSpaces(&c);
   1.246 +				c = fast_atoreal_move<float>(c,key.params[i]);
   1.247 +			}
   1.248 +		}
   1.249 +		else if ((*it).tokens[0] == "Behaviors") {
   1.250 +			SkipSpaces(&c);
   1.251 +			fill.pre = (LWO::PrePostBehaviour) strtoul10(c,&c);
   1.252 +			SkipSpaces(&c);
   1.253 +			fill.post = (LWO::PrePostBehaviour) strtoul10(c,&c);
   1.254 +		}
   1.255 +	}
   1.256 +}
   1.257 +
   1.258 +// ------------------------------------------------------------------------------------------------
   1.259 +// Read animation channels in the old LightWave animation format
   1.260 +void LWSImporter::ReadEnvelope_Old(
   1.261 +	std::list< LWS::Element >::const_iterator& it, 
   1.262 +	const std::list< LWS::Element >::const_iterator& end,
   1.263 +	LWS::NodeDesc& nodes,
   1.264 +	unsigned int /*version*/)
   1.265 +{
   1.266 +	unsigned int num,sub_num;
   1.267 +	if (++it == end)goto unexpected_end;
   1.268 +
   1.269 +	num = strtoul10((*it).tokens[0].c_str());
   1.270 +	for (unsigned int i = 0; i < num; ++i) {
   1.271 +	
   1.272 +		nodes.channels.push_back(LWO::Envelope());
   1.273 +		LWO::Envelope& envl = nodes.channels.back();
   1.274 +
   1.275 +		envl.index = i;
   1.276 +		envl.type  = (LWO::EnvelopeType)(i+1);
   1.277 +	
   1.278 +		if (++it == end)goto unexpected_end;
   1.279 +		sub_num = strtoul10((*it).tokens[0].c_str());
   1.280 +
   1.281 +		for (unsigned int n = 0; n < sub_num;++n) {
   1.282 +
   1.283 +			if (++it == end)goto unexpected_end;
   1.284 +
   1.285 +			// parse value and time, skip the rest for the moment.
   1.286 +			LWO::Key key;
   1.287 +			const char* c = fast_atoreal_move<float>((*it).tokens[0].c_str(),key.value);
   1.288 +			SkipSpaces(&c);
   1.289 +			float f;
   1.290 +			fast_atoreal_move<float>((*it).tokens[0].c_str(),f);
   1.291 +			key.time = f;
   1.292 +
   1.293 +			envl.keys.push_back(key);
   1.294 +		}
   1.295 +	}
   1.296 +	return;
   1.297 +
   1.298 +unexpected_end:
   1.299 +	DefaultLogger::get()->error("LWS: Encountered unexpected end of file while parsing object motion");
   1.300 +}
   1.301 +
   1.302 +// ------------------------------------------------------------------------------------------------
   1.303 +// Setup a nice name for a node 
   1.304 +void LWSImporter::SetupNodeName(aiNode* nd, LWS::NodeDesc& src)
   1.305 +{
   1.306 +	const unsigned int combined = src.number | ((unsigned int)src.type) << 28u;
   1.307 +
   1.308 +	// the name depends on the type. We break LWS's strange naming convention
   1.309 +	// and return human-readable, but still machine-parsable and unique, strings.
   1.310 +	if (src.type == LWS::NodeDesc::OBJECT)	{
   1.311 +
   1.312 +		if (src.path.length()) {
   1.313 +			std::string::size_type s = src.path.find_last_of("\\/");
   1.314 +			if (s == std::string::npos)
   1.315 +				s = 0;
   1.316 +			else ++s;
   1.317 +            std::string::size_type t = src.path.substr(s).find_last_of(".");
   1.318 +			
   1.319 +			nd->mName.length = ::sprintf(nd->mName.data,"%s_(%08X)",src.path.substr(s).substr(0,t).c_str(),combined);
   1.320 +			return;
   1.321 +		}
   1.322 +	}
   1.323 +	nd->mName.length = ::sprintf(nd->mName.data,"%s_(%08X)",src.name,combined);
   1.324 +}
   1.325 +
   1.326 +// ------------------------------------------------------------------------------------------------
   1.327 +// Recursively build the scenegraph
   1.328 +void LWSImporter::BuildGraph(aiNode* nd, LWS::NodeDesc& src, std::vector<AttachmentInfo>& attach,
   1.329 +	BatchLoader& batch,
   1.330 +	aiCamera**& camOut,
   1.331 +	aiLight**& lightOut, 
   1.332 +	std::vector<aiNodeAnim*>& animOut)
   1.333 +{
   1.334 +	// Setup a very cryptic name for the node, we want the user to be happy
   1.335 +	SetupNodeName(nd,src);
   1.336 +    aiNode* ndAnim = nd;
   1.337 +
   1.338 +	// If the node is an object
   1.339 +	if (src.type == LWS::NodeDesc::OBJECT) {
   1.340 +
   1.341 +		// If the object is from an external file, get it
   1.342 +		aiScene* obj = NULL;
   1.343 +        if (src.path.length() ) {
   1.344 +            obj = batch.GetImport(src.id);
   1.345 +            if (!obj) {
   1.346 +                DefaultLogger::get()->error("LWS: Failed to read external file " + src.path);
   1.347 +            }
   1.348 +            else {
   1.349 +                if (obj->mRootNode->mNumChildren == 1) {
   1.350 +					
   1.351 +                    //If the pivot is not set for this layer, get it from the external object
   1.352 +                    if (!src.isPivotSet) {
   1.353 +                        src.pivotPos.x = +obj->mRootNode->mTransformation.a4;
   1.354 +                        src.pivotPos.y = +obj->mRootNode->mTransformation.b4;
   1.355 +                        src.pivotPos.z = -obj->mRootNode->mTransformation.c4; //The sign is the RH to LH back conversion
   1.356 +                    }
   1.357 +					
   1.358 +                    //Remove first node from obj (the old pivot), reset transform of second node (the mesh node)
   1.359 +                    aiNode* newRootNode = obj->mRootNode->mChildren[0];
   1.360 +					obj->mRootNode->mChildren[0] = NULL;
   1.361 +					delete obj->mRootNode;
   1.362 +
   1.363 +                    obj->mRootNode = newRootNode;
   1.364 +                    obj->mRootNode->mTransformation.a4 = 0.0;
   1.365 +                    obj->mRootNode->mTransformation.b4 = 0.0;
   1.366 +                    obj->mRootNode->mTransformation.c4 = 0.0;
   1.367 +                }
   1.368 +            }
   1.369 +        }
   1.370 +		
   1.371 +		//Setup the pivot node (also the animation node), the one we received
   1.372 +        nd->mName = std::string("Pivot:") + nd->mName.data;
   1.373 +		ndAnim = nd;
   1.374 +		
   1.375 +        //Add the attachment node to it
   1.376 +        nd->mNumChildren = 1;
   1.377 +        nd->mChildren = new aiNode*[1];
   1.378 +        nd->mChildren[0] = new aiNode();
   1.379 +        nd->mChildren[0]->mParent = nd;
   1.380 +        nd->mChildren[0]->mTransformation.a4 = -src.pivotPos.x;
   1.381 +        nd->mChildren[0]->mTransformation.b4 = -src.pivotPos.y;
   1.382 +        nd->mChildren[0]->mTransformation.c4 = -src.pivotPos.z;
   1.383 +		SetupNodeName(nd->mChildren[0], src);
   1.384 +		
   1.385 +		//Update the attachment node
   1.386 +		nd = nd->mChildren[0];
   1.387 +		
   1.388 +        //Push attachment, if the object came from an external file
   1.389 +        if (obj) {
   1.390 +            attach.push_back(AttachmentInfo(obj,nd));
   1.391 +        }
   1.392 +    }
   1.393 +
   1.394 +	// If object is a light source - setup a corresponding ai structure
   1.395 +	else if (src.type == LWS::NodeDesc::LIGHT) {
   1.396 +		aiLight* lit = *lightOut++ = new aiLight();
   1.397 +
   1.398 +		// compute final light color
   1.399 +		lit->mColorDiffuse = lit->mColorSpecular = src.lightColor*src.lightIntensity;
   1.400 +
   1.401 +		// name to attach light to node -> unique due to LWs indexing system
   1.402 +		lit->mName = nd->mName;
   1.403 +
   1.404 +		// detemine light type and setup additional members
   1.405 +		if (src.lightType == 2) { /* spot light */
   1.406 +
   1.407 +			lit->mType = aiLightSource_SPOT;
   1.408 +			lit->mAngleInnerCone = (float)AI_DEG_TO_RAD( src.lightConeAngle );
   1.409 +			lit->mAngleOuterCone = lit->mAngleInnerCone+(float)AI_DEG_TO_RAD( src.lightEdgeAngle );
   1.410 +
   1.411 +		}
   1.412 +		else if (src.lightType == 1) { /* directional light source */
   1.413 +			lit->mType = aiLightSource_DIRECTIONAL;
   1.414 +		}
   1.415 +		else lit->mType = aiLightSource_POINT;
   1.416 +
   1.417 +		// fixme: no proper handling of light falloffs yet
   1.418 +		if (src.lightFalloffType == 1)
   1.419 +			lit->mAttenuationConstant = 1.f;
   1.420 +		else if (src.lightFalloffType == 1)
   1.421 +			lit->mAttenuationLinear = 1.f;
   1.422 +		else 
   1.423 +			lit->mAttenuationQuadratic = 1.f;
   1.424 +	}
   1.425 +
   1.426 +	// If object is a camera - setup a corresponding ai structure
   1.427 +	else if (src.type == LWS::NodeDesc::CAMERA) {
   1.428 +		aiCamera* cam = *camOut++ = new aiCamera();
   1.429 +
   1.430 +		// name to attach cam to node -> unique due to LWs indexing system
   1.431 +		cam->mName = nd->mName;
   1.432 +	}
   1.433 +
   1.434 +	// Get the node transformation from the LWO key
   1.435 +	LWO::AnimResolver resolver(src.channels,fps);
   1.436 +	resolver.ExtractBindPose(ndAnim->mTransformation);
   1.437 +
   1.438 +	// .. and construct animation channels
   1.439 +	aiNodeAnim* anim = NULL;
   1.440 +
   1.441 +	if (first != last) {
   1.442 +		resolver.SetAnimationRange(first,last);
   1.443 +		resolver.ExtractAnimChannel(&anim,AI_LWO_ANIM_FLAG_SAMPLE_ANIMS|AI_LWO_ANIM_FLAG_START_AT_ZERO);
   1.444 +		if (anim) {
   1.445 +			anim->mNodeName = ndAnim->mName;
   1.446 +			animOut.push_back(anim);
   1.447 +		}
   1.448 +	}
   1.449 +
   1.450 +	// Add children
   1.451 +	if (src.children.size()) {
   1.452 +		nd->mChildren = new aiNode*[src.children.size()];
   1.453 +		for (std::list<LWS::NodeDesc*>::iterator it = src.children.begin(); it != src.children.end(); ++it) {
   1.454 +			aiNode* ndd = nd->mChildren[nd->mNumChildren++] = new aiNode();
   1.455 +			ndd->mParent = nd;
   1.456 +
   1.457 +			BuildGraph(ndd,**it,attach,batch,camOut,lightOut,animOut);
   1.458 +		}
   1.459 +	}
   1.460 +}
   1.461 +
   1.462 +// ------------------------------------------------------------------------------------------------
   1.463 +// Determine the exact location of a LWO file
   1.464 +std::string LWSImporter::FindLWOFile(const std::string& in)
   1.465 +{
   1.466 +	// insert missing directory seperator if necessary
   1.467 +	std::string tmp;
   1.468 +	if (in.length() > 3 && in[1] == ':'&& in[2] != '\\' && in[2] != '/')
   1.469 +	{
   1.470 +		tmp = in[0] + (":\\" + in.substr(2));
   1.471 +	}
   1.472 +	else tmp = in;
   1.473 +
   1.474 +	if (io->Exists(tmp)) {
   1.475 +		return in;
   1.476 +	}
   1.477 +
   1.478 +	// file is not accessible for us ... maybe it's packed by 
   1.479 +	// LightWave's 'Package Scene' command?
   1.480 +
   1.481 +	// Relevant for us are the following two directories:
   1.482 +	// <folder>\Objects\<hh>\<*>.lwo
   1.483 +	// <folder>\Scenes\<hh>\<*>.lws
   1.484 +	// where <hh> is optional.
   1.485 +
   1.486 +	std::string test = ".." + (io->getOsSeparator() + tmp); 
   1.487 +	if (io->Exists(test)) {
   1.488 +		return test;
   1.489 +	}
   1.490 +
   1.491 +	test = ".." + (io->getOsSeparator() + test); 
   1.492 +	if (io->Exists(test)) {
   1.493 +		return test;
   1.494 +	}
   1.495 +
   1.496 +
   1.497 +	// return original path, maybe the IOsystem knows better
   1.498 +	return tmp;
   1.499 +}
   1.500 +
   1.501 +// ------------------------------------------------------------------------------------------------
   1.502 +// Read file into given scene data structure
   1.503 +void LWSImporter::InternReadFile( const std::string& pFile, aiScene* pScene, 
   1.504 +	IOSystem* pIOHandler)
   1.505 +{
   1.506 +	io = pIOHandler;
   1.507 +	boost::scoped_ptr<IOStream> file( pIOHandler->Open( pFile, "rb"));
   1.508 +
   1.509 +	// Check whether we can read from the file
   1.510 +	if( file.get() == NULL) {
   1.511 +		throw DeadlyImportError( "Failed to open LWS file " + pFile + ".");
   1.512 +	}
   1.513 +
   1.514 +	// Allocate storage and copy the contents of the file to a memory buffer
   1.515 +	std::vector< char > mBuffer;
   1.516 +	TextFileToBuffer(file.get(),mBuffer);
   1.517 +	
   1.518 +	// Parse the file structure
   1.519 +	LWS::Element root; const char* dummy = &mBuffer[0];
   1.520 +	root.Parse(dummy);
   1.521 +
   1.522 +	// Construct a Batchimporter to read more files recursively
   1.523 +	BatchLoader batch(pIOHandler);
   1.524 +//	batch.SetBasePath(pFile);
   1.525 +
   1.526 +	// Construct an array to receive the flat output graph
   1.527 +	std::list<LWS::NodeDesc> nodes;
   1.528 +
   1.529 +	unsigned int cur_light = 0, cur_camera = 0, cur_object = 0;
   1.530 +	unsigned int num_light = 0, num_camera = 0, num_object = 0;
   1.531 +
   1.532 +	// check magic identifier, 'LWSC'
   1.533 +	bool motion_file = false;
   1.534 +	std::list< LWS::Element >::const_iterator it = root.children.begin();
   1.535 +	
   1.536 +	if ((*it).tokens[0] == "LWMO")
   1.537 +		motion_file = true;
   1.538 +
   1.539 +	if ((*it).tokens[0] != "LWSC" && !motion_file)
   1.540 +		throw DeadlyImportError("LWS: Not a LightWave scene, magic tag LWSC not found");
   1.541 +
   1.542 +	// get file format version and print to log
   1.543 +	++it;
   1.544 +	unsigned int version = strtoul10((*it).tokens[0].c_str());
   1.545 +	DefaultLogger::get()->info("LWS file format version is " + (*it).tokens[0]);
   1.546 +	first = 0.;
   1.547 +	last  = 60.;
   1.548 +	fps   = 25.; /* seems to be a good default frame rate */
   1.549 +
   1.550 +	// Now read all elements in a very straghtforward manner
   1.551 +	for (; it != root.children.end(); ++it) {
   1.552 +		const char* c = (*it).tokens[1].c_str();
   1.553 +
   1.554 +		// 'FirstFrame': begin of animation slice
   1.555 +		if ((*it).tokens[0] == "FirstFrame") {
   1.556 +			if (150392. != first           /* see SetupProperties() */)
   1.557 +				first = strtoul10(c,&c)-1.; /* we're zero-based */
   1.558 +		}
   1.559 +
   1.560 +		// 'LastFrame': end of animation slice
   1.561 +		else if ((*it).tokens[0] == "LastFrame") {
   1.562 +			if (150392. != last      /* see SetupProperties() */)
   1.563 +				last = strtoul10(c,&c)-1.; /* we're zero-based */
   1.564 +		}
   1.565 +
   1.566 +		// 'FramesPerSecond': frames per second
   1.567 +		else if ((*it).tokens[0] == "FramesPerSecond") {
   1.568 +			fps = strtoul10(c,&c);
   1.569 +		}
   1.570 +
   1.571 +		// 'LoadObjectLayer': load a layer of a specific LWO file
   1.572 +		else if ((*it).tokens[0] == "LoadObjectLayer") {
   1.573 +
   1.574 +			// get layer index
   1.575 +			const int layer = strtoul10(c,&c);
   1.576 +
   1.577 +			// setup the layer to be loaded
   1.578 +			BatchLoader::PropertyMap props;
   1.579 +			SetGenericProperty(props.ints,AI_CONFIG_IMPORT_LWO_ONE_LAYER_ONLY,layer);
   1.580 +
   1.581 +			// add node to list
   1.582 +			LWS::NodeDesc d;
   1.583 +			d.type = LWS::NodeDesc::OBJECT;
   1.584 +			if (version >= 4) { // handle LWSC 4 explicit ID
   1.585 +				SkipSpaces(&c);
   1.586 +				d.number = strtoul16(c,&c) & AI_LWS_MASK;
   1.587 +			}
   1.588 +			else d.number = cur_object++;
   1.589 +
   1.590 +			// and add the file to the import list
   1.591 +			SkipSpaces(&c);
   1.592 +			std::string path = FindLWOFile( c );
   1.593 +			d.path = path;
   1.594 +			d.id = batch.AddLoadRequest(path,0,&props);
   1.595 +
   1.596 +			nodes.push_back(d);
   1.597 +			num_object++;
   1.598 +		}
   1.599 +		// 'LoadObject': load a LWO file into the scenegraph
   1.600 +		else if ((*it).tokens[0] == "LoadObject") {
   1.601 +			
   1.602 +			// add node to list
   1.603 +			LWS::NodeDesc d;
   1.604 +			d.type = LWS::NodeDesc::OBJECT;
   1.605 +			
   1.606 +			if (version >= 4) { // handle LWSC 4 explicit ID
   1.607 +				d.number = strtoul16(c,&c) & AI_LWS_MASK;
   1.608 +				SkipSpaces(&c);
   1.609 +			}
   1.610 +			else d.number = cur_object++;
   1.611 +			std::string path = FindLWOFile( c );
   1.612 +			d.id = batch.AddLoadRequest(path,0,NULL);
   1.613 +
   1.614 +			d.path = path;
   1.615 +			nodes.push_back(d);
   1.616 +			num_object++;
   1.617 +		}
   1.618 +		// 'AddNullObject': add a dummy node to the hierarchy
   1.619 +		else if ((*it).tokens[0] == "AddNullObject") {
   1.620 +
   1.621 +			// add node to list
   1.622 +			LWS::NodeDesc d;
   1.623 +			d.type = LWS::NodeDesc::OBJECT;
   1.624 +			if (version >= 4) { // handle LWSC 4 explicit ID
   1.625 +				d.number = strtoul16(c,&c) & AI_LWS_MASK;
   1.626 +				SkipSpaces(&c);
   1.627 +			}
   1.628 +			else d.number = cur_object++;
   1.629 +            d.name = c;
   1.630 +			nodes.push_back(d);
   1.631 +
   1.632 +			num_object++;
   1.633 +		}
   1.634 +		// 'NumChannels': Number of envelope channels assigned to last layer
   1.635 +		else if ((*it).tokens[0] == "NumChannels") {
   1.636 +			// ignore for now
   1.637 +		}
   1.638 +		// 'Channel': preceedes any envelope description
   1.639 +		else if ((*it).tokens[0] == "Channel") {
   1.640 +			if (nodes.empty()) {
   1.641 +				if (motion_file) {
   1.642 +
   1.643 +					// LightWave motion file. Add dummy node
   1.644 +					LWS::NodeDesc d;
   1.645 +					d.type = LWS::NodeDesc::OBJECT;
   1.646 +					d.name = c;
   1.647 +					d.number = cur_object++;
   1.648 +					nodes.push_back(d);
   1.649 +				}
   1.650 +				else DefaultLogger::get()->error("LWS: Unexpected keyword: \'Channel\'");
   1.651 +			}
   1.652 +
   1.653 +			// important: index of channel
   1.654 +			nodes.back().channels.push_back(LWO::Envelope());
   1.655 +			LWO::Envelope& env = nodes.back().channels.back();
   1.656 +			
   1.657 +			env.index = strtoul10(c);
   1.658 +
   1.659 +			// currently we can just interpret the standard channels 0...9
   1.660 +			// (hack) assume that index-i yields the binary channel type from LWO
   1.661 +			env.type = (LWO::EnvelopeType)(env.index+1);
   1.662 +
   1.663 +		}
   1.664 +		// 'Envelope': a single animation channel
   1.665 +		else if ((*it).tokens[0] == "Envelope") {
   1.666 +			if (nodes.empty() || nodes.back().channels.empty())
   1.667 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'Envelope\'");
   1.668 +			else {
   1.669 +				ReadEnvelope((*it),nodes.back().channels.back());
   1.670 +			}
   1.671 +		}
   1.672 +		// 'ObjectMotion': animation information for older lightwave formats
   1.673 +		else if (version < 3  && ((*it).tokens[0] == "ObjectMotion" ||
   1.674 +			(*it).tokens[0] == "CameraMotion" ||
   1.675 +			(*it).tokens[0] == "LightMotion")) {
   1.676 +
   1.677 +			if (nodes.empty())
   1.678 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'<Light|Object|Camera>Motion\'");
   1.679 +			else {
   1.680 +				ReadEnvelope_Old(it,root.children.end(),nodes.back(),version);
   1.681 +			}
   1.682 +		}
   1.683 +		// 'Pre/PostBehavior': pre/post animation behaviour for LWSC 2
   1.684 +		else if (version == 2 && (*it).tokens[0] == "Pre/PostBehavior") {
   1.685 +			if (nodes.empty())
   1.686 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'Pre/PostBehavior'");
   1.687 +			else {
   1.688 +				for (std::list<LWO::Envelope>::iterator it = nodes.back().channels.begin(); it != nodes.back().channels.end(); ++it) {
   1.689 +					// two ints per envelope
   1.690 +					LWO::Envelope& env = *it;
   1.691 +					env.pre  = (LWO::PrePostBehaviour) strtoul10(c,&c); SkipSpaces(&c);
   1.692 +					env.post = (LWO::PrePostBehaviour) strtoul10(c,&c); SkipSpaces(&c);
   1.693 +				}
   1.694 +			}
   1.695 +		}
   1.696 +		// 'ParentItem': specifies the parent of the current element
   1.697 +		else if ((*it).tokens[0] == "ParentItem") {
   1.698 +			if (nodes.empty())
   1.699 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'ParentItem\'");
   1.700 +
   1.701 +			else nodes.back().parent = strtoul16(c,&c);
   1.702 +		}
   1.703 +		// 'ParentObject': deprecated one for older formats
   1.704 +		else if (version < 3 && (*it).tokens[0] == "ParentObject") {
   1.705 +			if (nodes.empty())
   1.706 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'ParentObject\'");
   1.707 +
   1.708 +			else { 
   1.709 +				nodes.back().parent = strtoul10(c,&c) | (1u << 28u);
   1.710 +			}
   1.711 +		}
   1.712 +		// 'AddCamera': add a camera to the scenegraph
   1.713 +		else if ((*it).tokens[0] == "AddCamera") {
   1.714 +
   1.715 +			// add node to list
   1.716 +			LWS::NodeDesc d;
   1.717 +			d.type = LWS::NodeDesc::CAMERA;
   1.718 +
   1.719 +			if (version >= 4) { // handle LWSC 4 explicit ID
   1.720 +				d.number = strtoul16(c,&c) & AI_LWS_MASK;
   1.721 +			}
   1.722 +			else d.number = cur_camera++;
   1.723 +			nodes.push_back(d);
   1.724 +
   1.725 +			num_camera++;
   1.726 +		}
   1.727 +		// 'CameraName': set name of currently active camera
   1.728 +		else if ((*it).tokens[0] == "CameraName") {
   1.729 +			if (nodes.empty() || nodes.back().type != LWS::NodeDesc::CAMERA)
   1.730 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'CameraName\'");
   1.731 +
   1.732 +			else nodes.back().name = c;
   1.733 +		}
   1.734 +		// 'AddLight': add a light to the scenegraph
   1.735 +		else if ((*it).tokens[0] == "AddLight") {
   1.736 +
   1.737 +			// add node to list
   1.738 +			LWS::NodeDesc d;
   1.739 +			d.type = LWS::NodeDesc::LIGHT;
   1.740 +
   1.741 +			if (version >= 4) { // handle LWSC 4 explicit ID
   1.742 +				d.number = strtoul16(c,&c) & AI_LWS_MASK;
   1.743 +			}
   1.744 +			else d.number = cur_light++;
   1.745 +			nodes.push_back(d);
   1.746 +
   1.747 +			num_light++;
   1.748 +		}
   1.749 +		// 'LightName': set name of currently active light
   1.750 +		else if ((*it).tokens[0] == "LightName") {
   1.751 +			if (nodes.empty() || nodes.back().type != LWS::NodeDesc::LIGHT)
   1.752 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'LightName\'");
   1.753 +
   1.754 +			else nodes.back().name = c;
   1.755 +		}
   1.756 +		// 'LightIntensity': set intensity of currently active light
   1.757 +		else if ((*it).tokens[0] == "LightIntensity" || (*it).tokens[0] == "LgtIntensity" ) {
   1.758 +			if (nodes.empty() || nodes.back().type != LWS::NodeDesc::LIGHT)
   1.759 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'LightIntensity\'");
   1.760 +
   1.761 +			else fast_atoreal_move<float>(c, nodes.back().lightIntensity );
   1.762 +			
   1.763 +		}
   1.764 +		// 'LightType': set type of currently active light
   1.765 +		else if ((*it).tokens[0] == "LightType") {
   1.766 +			if (nodes.empty() || nodes.back().type != LWS::NodeDesc::LIGHT)
   1.767 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'LightType\'");
   1.768 +
   1.769 +			else nodes.back().lightType = strtoul10(c);
   1.770 +			
   1.771 +		}
   1.772 +		// 'LightFalloffType': set falloff type of currently active light
   1.773 +		else if ((*it).tokens[0] == "LightFalloffType") {
   1.774 +			if (nodes.empty() || nodes.back().type != LWS::NodeDesc::LIGHT)
   1.775 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'LightFalloffType\'");
   1.776 +
   1.777 +			else nodes.back().lightFalloffType = strtoul10(c);
   1.778 +			
   1.779 +		}
   1.780 +		// 'LightConeAngle': set cone angle of currently active light
   1.781 +		else if ((*it).tokens[0] == "LightConeAngle") {
   1.782 +			if (nodes.empty() || nodes.back().type != LWS::NodeDesc::LIGHT)
   1.783 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'LightConeAngle\'");
   1.784 +
   1.785 +			else nodes.back().lightConeAngle = fast_atof(c);
   1.786 +			
   1.787 +		}
   1.788 +		// 'LightEdgeAngle': set area where we're smoothing from min to max intensity
   1.789 +		else if ((*it).tokens[0] == "LightEdgeAngle") {
   1.790 +			if (nodes.empty() || nodes.back().type != LWS::NodeDesc::LIGHT)
   1.791 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'LightEdgeAngle\'");
   1.792 +
   1.793 +			else nodes.back().lightEdgeAngle = fast_atof(c);
   1.794 +			
   1.795 +		}
   1.796 +		// 'LightColor': set color of currently active light
   1.797 +		else if ((*it).tokens[0] == "LightColor") {
   1.798 +			if (nodes.empty() || nodes.back().type != LWS::NodeDesc::LIGHT)
   1.799 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'LightColor\'");
   1.800 +
   1.801 +			else {
   1.802 +				c = fast_atoreal_move<float>(c, (float&) nodes.back().lightColor.r );
   1.803 +				SkipSpaces(&c);
   1.804 +				c = fast_atoreal_move<float>(c, (float&) nodes.back().lightColor.g );
   1.805 +				SkipSpaces(&c);
   1.806 +				c = fast_atoreal_move<float>(c, (float&) nodes.back().lightColor.b );
   1.807 +			}
   1.808 +		}
   1.809 +
   1.810 +		// 'PivotPosition': position of local transformation origin
   1.811 +		else if ((*it).tokens[0] == "PivotPosition" || (*it).tokens[0] == "PivotPoint") {
   1.812 +			if (nodes.empty())
   1.813 +				DefaultLogger::get()->error("LWS: Unexpected keyword: \'PivotPosition\'");
   1.814 +			else {
   1.815 +				c = fast_atoreal_move<float>(c, (float&) nodes.back().pivotPos.x );
   1.816 +				SkipSpaces(&c);
   1.817 +				c = fast_atoreal_move<float>(c, (float&) nodes.back().pivotPos.y );
   1.818 +				SkipSpaces(&c);
   1.819 +				c = fast_atoreal_move<float>(c, (float&) nodes.back().pivotPos.z );
   1.820 +                // Mark pivotPos as set
   1.821 +                nodes.back().isPivotSet = true;
   1.822 +			}
   1.823 +		}
   1.824 +	}
   1.825 +
   1.826 +	// resolve parenting
   1.827 +	for (std::list<LWS::NodeDesc>::iterator it = nodes.begin(); it != nodes.end(); ++it) {
   1.828 +	
   1.829 +		// check whether there is another node which calls us a parent
   1.830 +		for (std::list<LWS::NodeDesc>::iterator dit = nodes.begin(); dit != nodes.end(); ++dit) {
   1.831 +			if (dit != it && *it == (*dit).parent) {
   1.832 +				if ((*dit).parent_resolved) {
   1.833 +					// fixme: it's still possible to produce an overflow due to cross references ..
   1.834 +					DefaultLogger::get()->error("LWS: Found cross reference in scenegraph");
   1.835 +					continue;
   1.836 +				}
   1.837 +
   1.838 +				(*it).children.push_back(&*dit);
   1.839 +				(*dit).parent_resolved = &*it;
   1.840 +			}
   1.841 +		}
   1.842 +	}
   1.843 +
   1.844 +	// find out how many nodes have no parent yet
   1.845 +	unsigned int no_parent = 0;
   1.846 +	for (std::list<LWS::NodeDesc>::iterator it = nodes.begin(); it != nodes.end(); ++it) {
   1.847 +		if (!(*it).parent_resolved)
   1.848 +			++ no_parent;
   1.849 +	}
   1.850 +	if (!no_parent)
   1.851 +		throw DeadlyImportError("LWS: Unable to find scene root node");
   1.852 +
   1.853 +
   1.854 +	// Load all subsequent files
   1.855 +	batch.LoadAll();
   1.856 +
   1.857 +	// and build the final output graph by attaching the loaded external
   1.858 +	// files to ourselves. first build a master graph 
   1.859 +	aiScene* master = new aiScene();
   1.860 +	aiNode* nd = master->mRootNode = new aiNode();
   1.861 +
   1.862 +	// allocate storage for cameras&lights
   1.863 +	if (num_camera) {
   1.864 +		master->mCameras = new aiCamera*[master->mNumCameras = num_camera];
   1.865 +	}
   1.866 +	aiCamera** cams = master->mCameras;
   1.867 +	if (num_light) {
   1.868 +		master->mLights = new aiLight*[master->mNumLights = num_light];
   1.869 +	}
   1.870 +	aiLight** lights = master->mLights;
   1.871 +
   1.872 +	std::vector<AttachmentInfo> attach;
   1.873 +	std::vector<aiNodeAnim*> anims;
   1.874 +
   1.875 +	nd->mName.Set("<LWSRoot>");
   1.876 +	nd->mChildren = new aiNode*[no_parent];
   1.877 +	for (std::list<LWS::NodeDesc>::iterator it = nodes.begin(); it != nodes.end(); ++it) {
   1.878 +		if (!(*it).parent_resolved) {
   1.879 +			aiNode* ro = nd->mChildren[ nd->mNumChildren++ ] = new aiNode();
   1.880 +			ro->mParent = nd;
   1.881 +
   1.882 +			// ... and build the scene graph. If we encounter object nodes,
   1.883 +			// add then to our attachment table.
   1.884 +			BuildGraph(ro,*it, attach, batch, cams, lights, anims);
   1.885 +		}
   1.886 +	}
   1.887 +
   1.888 +	// create a master animation channel for us
   1.889 +	if (anims.size()) {
   1.890 +		master->mAnimations = new aiAnimation*[master->mNumAnimations = 1];
   1.891 +		aiAnimation* anim = master->mAnimations[0] = new aiAnimation();
   1.892 +		anim->mName.Set("LWSMasterAnim");
   1.893 +
   1.894 +		// LWS uses seconds as time units, but we convert to frames
   1.895 +		anim->mTicksPerSecond = fps;
   1.896 +		anim->mDuration = last-(first-1); /* fixme ... zero or one-based?*/
   1.897 +
   1.898 +		anim->mChannels = new aiNodeAnim*[anim->mNumChannels = anims.size()];
   1.899 +		std::copy(anims.begin(),anims.end(),anim->mChannels);
   1.900 +	}
   1.901 +
   1.902 +	// convert the master scene to RH
   1.903 +	MakeLeftHandedProcess monster_cheat;
   1.904 +	monster_cheat.Execute(master);
   1.905 +
   1.906 +	// .. ccw
   1.907 +	FlipWindingOrderProcess flipper;
   1.908 +	flipper.Execute(master);
   1.909 +
   1.910 +	// OK ... finally build the output graph
   1.911 +	SceneCombiner::MergeScenes(&pScene,master,attach,
   1.912 +		AI_INT_MERGE_SCENE_GEN_UNIQUE_NAMES    | (!configSpeedFlag ? (
   1.913 +		AI_INT_MERGE_SCENE_GEN_UNIQUE_NAMES_IF_NECESSARY | AI_INT_MERGE_SCENE_GEN_UNIQUE_MATNAMES) : 0));
   1.914 +
   1.915 +	// Check flags
   1.916 +	if (!pScene->mNumMeshes || !pScene->mNumMaterials) {
   1.917 +		pScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
   1.918 +
   1.919 +		if (pScene->mNumAnimations && !noSkeletonMesh) {
   1.920 +			// construct skeleton mesh
   1.921 +			SkeletonMeshBuilder builder(pScene);
   1.922 +		}
   1.923 +	}
   1.924 +
   1.925 +}
   1.926 +
   1.927 +#endif // !! ASSIMP_BUILD_NO_LWS_IMPORTER