assimp/code/PlyParser.cpp

/*
---------------------------------------------------------------------------
Open Asset Import Library (assimp)
---------------------------------------------------------------------------

Copyright (c) 2006-2012, assimp team

All rights reserved.

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with or without modification, are permitted provided that the following 
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  following disclaimer.

* Redistributions in binary form must reproduce the above
  copyright notice, this list of conditions and the
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  derived from this software without specific prior
  written permission of the assimp team.

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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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*/

/** @file Implementation of the PLY parser class */

#include "AssimpPCH.h"
#ifndef ASSIMP_BUILD_NO_PLY_IMPORTER

#include "PlyLoader.h"
#include "fast_atof.h"

using namespace Assimp;

// ------------------------------------------------------------------------------------------------
PLY::EDataType PLY::Property::ParseDataType(const char* pCur,const char** pCurOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut);
	PLY::EDataType eOut = PLY::EDT_INVALID;

	if (TokenMatch(pCur,"char",4) ||
		TokenMatch(pCur,"int8",4))
	{
		eOut = PLY::EDT_Char;
	}
	else if (TokenMatch(pCur,"uchar",5) ||
			 TokenMatch(pCur,"uint8",5))
	{
		eOut = PLY::EDT_UChar;
	}
	else if (TokenMatch(pCur,"short",5) ||
			 TokenMatch(pCur,"int16",5))
	{
		eOut = PLY::EDT_Short;
	}
	else if (TokenMatch(pCur,"ushort",6) ||
			 TokenMatch(pCur,"uint16",6))
	{
		eOut = PLY::EDT_UShort;
	}
	else if (TokenMatch(pCur,"int32",5) || TokenMatch(pCur,"int",3))
	{
		eOut = PLY::EDT_Int;
	}
	else if (TokenMatch(pCur,"uint32",6) || TokenMatch(pCur,"uint",4))
	{
		eOut = PLY::EDT_UInt;
	}
	else if (TokenMatch(pCur,"float",5) || TokenMatch(pCur,"float32",7))
	{
		eOut = PLY::EDT_Float;
	}
	else if (TokenMatch(pCur,"double64",8) || TokenMatch(pCur,"double",6) ||
		     TokenMatch(pCur,"float64",7))
	{
		eOut = PLY::EDT_Double;
	}
	if (PLY::EDT_INVALID == eOut)
	{
		DefaultLogger::get()->info("Found unknown data type in PLY file. This is OK");
	}
	*pCurOut = pCur;
	return eOut;
}

// ------------------------------------------------------------------------------------------------
PLY::ESemantic PLY::Property::ParseSemantic(const char* pCur,const char** pCurOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut);

	PLY::ESemantic eOut = PLY::EST_INVALID;
	if (TokenMatch(pCur,"red",3))
	{
		eOut = PLY::EST_Red;
	}
	else if (TokenMatch(pCur,"green",5))
	{
		eOut = PLY::EST_Green;
	}
	else if (TokenMatch(pCur,"blue",4))
	{
		eOut = PLY::EST_Blue;
	}
	else if (TokenMatch(pCur,"alpha",5))
	{
		eOut = PLY::EST_Alpha;
	}
	else if (TokenMatch(pCur,"vertex_index",12) || TokenMatch(pCur,"vertex_indices",14))
	{
		eOut = PLY::EST_VertexIndex;
	}
	else if (TokenMatch(pCur,"material_index",14))
	{
		eOut = PLY::EST_MaterialIndex;
	}
	else if (TokenMatch(pCur,"ambient_red",11))
	{
		eOut = PLY::EST_AmbientRed;
	}
	else if (TokenMatch(pCur,"ambient_green",13))
	{
		eOut = PLY::EST_AmbientGreen;
	}
	else if (TokenMatch(pCur,"ambient_blue",12))
	{
		eOut = PLY::EST_AmbientBlue;
	}
	else if (TokenMatch(pCur,"ambient_alpha",13))
	{
		eOut = PLY::EST_AmbientAlpha;
	}
	else if (TokenMatch(pCur,"diffuse_red",11))
	{
		eOut = PLY::EST_DiffuseRed;
	}
	else if (TokenMatch(pCur,"diffuse_green",13))
	{
		eOut = PLY::EST_DiffuseGreen;
	}
	else if (TokenMatch(pCur,"diffuse_blue",12))
	{
		eOut = PLY::EST_DiffuseBlue;
	}
	else if (TokenMatch(pCur,"diffuse_alpha",13))
	{
		eOut = PLY::EST_DiffuseAlpha;
	}
	else if (TokenMatch(pCur,"specular_red",12))
	{
		eOut = PLY::EST_SpecularRed;
	}
	else if (TokenMatch(pCur,"specular_green",14))
	{
		eOut = PLY::EST_SpecularGreen;
	}
	else if (TokenMatch(pCur,"specular_blue",13))
	{
		eOut = PLY::EST_SpecularBlue;
	}
	else if (TokenMatch(pCur,"specular_alpha",14))
	{
		eOut = PLY::EST_SpecularAlpha;
	}
	else if (TokenMatch(pCur,"opacity",7))
	{
		eOut = PLY::EST_Opacity;
	}
	else if (TokenMatch(pCur,"specular_power",14))
	{
		eOut = PLY::EST_PhongPower;
	}
	else if (TokenMatch(pCur,"r",1))
	{
		eOut = PLY::EST_Red;
	}
	else if (TokenMatch(pCur,"g",1))
	{
		eOut = PLY::EST_Green;
	}
	else if (TokenMatch(pCur,"b",1))
	{
		eOut = PLY::EST_Blue;
	}
	// NOTE: Blender3D exports texture coordinates as s,t tuples
	else if (TokenMatch(pCur,"u",1) ||  TokenMatch(pCur,"s",1) || TokenMatch(pCur,"tx",2))
	{
		eOut = PLY::EST_UTextureCoord;
	}
	else if (TokenMatch(pCur,"v",1) ||  TokenMatch(pCur,"t",1) || TokenMatch(pCur,"ty",2))
	{
		eOut = PLY::EST_VTextureCoord;
	}
	else if (TokenMatch(pCur,"x",1))
	{
		eOut = PLY::EST_XCoord;
	}
	else if (TokenMatch(pCur,"y",1))
	{
		eOut = PLY::EST_YCoord;
	}
	else if (TokenMatch(pCur,"z",1))
	{
		eOut = PLY::EST_ZCoord;
	}
	else if (TokenMatch(pCur,"nx",2))
	{
		eOut = PLY::EST_XNormal;
	}
	else if (TokenMatch(pCur,"ny",2))
	{
		eOut = PLY::EST_YNormal;
	}
	else if (TokenMatch(pCur,"nz",2))
	{
		eOut = PLY::EST_ZNormal;
	}
	else
	{
		DefaultLogger::get()->info("Found unknown property semantic in file. This is ok");
		SkipLine(&pCur);
	}
	*pCurOut = pCur;
	return eOut;
}

// ------------------------------------------------------------------------------------------------
bool PLY::Property::ParseProperty (const char* pCur,
	const char** pCurOut,
	PLY::Property* pOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut);

	// Forms supported:
	// "property float x"
	// "property list uchar int vertex_index"
	*pCurOut = pCur;

	// skip leading spaces
	if (!SkipSpaces(pCur,&pCur))return false;

	// skip the "property" string at the beginning
	if (!TokenMatch(pCur,"property",8))
	{
		// seems not to be a valid property entry
		return false;
	}
	// get next word
	if (!SkipSpaces(pCur,&pCur))return false;
	if (TokenMatch(pCur,"list",4))
	{
		pOut->bIsList = true;

		// seems to be a list.
		if(EDT_INVALID == (pOut->eFirstType = PLY::Property::ParseDataType(pCur, &pCur)))
		{
			// unable to parse list size data type
			SkipLine(pCur,&pCur);
			*pCurOut = pCur;
			return false;
		}
		if (!SkipSpaces(pCur,&pCur))return false;
		if(EDT_INVALID == (pOut->eType = PLY::Property::ParseDataType(pCur, &pCur)))
		{
			// unable to parse list data type
			SkipLine(pCur,&pCur);
			*pCurOut = pCur;
			return false;
		}
	}
	else
	{
		if(EDT_INVALID == (pOut->eType = PLY::Property::ParseDataType(pCur, &pCur)))
		{
			// unable to parse data type. Skip the property
			SkipLine(pCur,&pCur);
			*pCurOut = pCur;
			return false;
		}
	}
	
	if (!SkipSpaces(pCur,&pCur))return false;
	const char* szCur = pCur;
	pOut->Semantic = PLY::Property::ParseSemantic(pCur, &pCur);

	if (PLY::EST_INVALID == pOut->Semantic)
	{
		// store the name of the semantic
		uintptr_t iDiff = (uintptr_t)pCur - (uintptr_t)szCur;

		DefaultLogger::get()->info("Found unknown semantic in PLY file. This is OK");
		pOut->szName = std::string(szCur,iDiff);
	}

	SkipSpacesAndLineEnd(pCur,&pCur);
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
PLY::EElementSemantic PLY::Element::ParseSemantic(const char* pCur,
	const char** pCurOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut);
	PLY::EElementSemantic eOut = PLY::EEST_INVALID;
	if (TokenMatch(pCur,"vertex",6))
	{
		eOut = PLY::EEST_Vertex;
	}
	else if (TokenMatch(pCur,"face",4))
	{
		eOut = PLY::EEST_Face;
	}
#if 0
	// TODO: maybe implement this?
	else if (TokenMatch(pCur,"range_grid",10))
	{
		eOut = PLY::EEST_Face;
	}
#endif
	else if (TokenMatch(pCur,"tristrips",9))
	{
		eOut = PLY::EEST_TriStrip;
	}
	else if (TokenMatch(pCur,"edge",4))
	{
		eOut = PLY::EEST_Edge;
	}
	else if (TokenMatch(pCur,"material",8))
	{
		eOut = PLY::EEST_Material;
	}
	*pCurOut = pCur;
	return eOut;
}

// ------------------------------------------------------------------------------------------------
bool PLY::Element::ParseElement (const char* pCur, 
	const char** pCurOut,
	PLY::Element* pOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL != pOut);

	// Example format: "element vertex 8"
	*pCurOut = pCur;

	// skip leading spaces
	if (!SkipSpaces(&pCur))return false;

	// skip the "element" string at the beginning
	if (!TokenMatch(pCur,"element",7))
	{
		// seems not to be a valid property entry
		return false;
	}
	// get next word
	if (!SkipSpaces(&pCur))return false;

	// parse the semantic of the element
	const char* szCur = pCur;
	pOut->eSemantic = PLY::Element::ParseSemantic(pCur,&pCur);
	if (PLY::EEST_INVALID == pOut->eSemantic)
	{
		// if the exact semantic can't be determined, just store
		// the original string identifier
		uintptr_t iDiff = (uintptr_t)pCur - (uintptr_t)szCur;
		pOut->szName = std::string(szCur,iDiff);
	}

	if (!SkipSpaces(&pCur))return false;
	
	//parse the number of occurences of this element
	pOut->NumOccur = strtoul10(pCur,&pCur);

	// go to the next line
	SkipSpacesAndLineEnd(pCur,&pCur);

	// now parse all properties of the element
	while(true)
	{
		// skip all comments
		PLY::DOM::SkipComments(pCur,&pCur);

		PLY::Property prop;
		if(!PLY::Property::ParseProperty(pCur,&pCur,&prop))break;
		pOut->alProperties.push_back(prop);
	}
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::DOM::SkipComments (const char* pCur,
	const char** pCurOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut);
	*pCurOut = pCur;

	// skip spaces
	if (!SkipSpaces(pCur,&pCur))return false;

	if (TokenMatch(pCur,"comment",7))
	{
		SkipLine(pCur,&pCur);
		SkipComments(pCur,&pCur);
		*pCurOut = pCur;
		return true;
	}
	*pCurOut = pCur;
	return false;
}

// ------------------------------------------------------------------------------------------------
bool PLY::DOM::ParseHeader (const char* pCur,const char** pCurOut,bool isBinary)
{
	ai_assert(NULL != pCur && NULL != pCurOut);
	DefaultLogger::get()->debug("PLY::DOM::ParseHeader() begin");

	// after ply and format line
	*pCurOut = pCur;

	// parse all elements
	while ((*pCur) != '\0')
	{
		// skip all comments
		PLY::DOM::SkipComments(pCur,&pCur);

		PLY::Element out;
		if(PLY::Element::ParseElement(pCur,&pCur,&out))
		{
			// add the element to the list of elements
			alElements.push_back(out);
		}
		else if (TokenMatch(pCur,"end_header",10))
		{
			// we have reached the end of the header
			break;
		}
		else
		{
			// ignore unknown header elements
			SkipLine(&pCur);
		}
	}
	if(!isBinary)
	{ // it would occur an error, if binary data start with values as space or line end.
		SkipSpacesAndLineEnd(pCur,&pCur);
	}
	*pCurOut = pCur;

	DefaultLogger::get()->debug("PLY::DOM::ParseHeader() succeeded");
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::DOM::ParseElementInstanceLists (
	const char* pCur,
	const char** pCurOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut);

	DefaultLogger::get()->debug("PLY::DOM::ParseElementInstanceLists() begin");
	*pCurOut = pCur;

	alElementData.resize(alElements.size());

	std::vector<PLY::Element>::const_iterator i = alElements.begin();
	std::vector<PLY::ElementInstanceList>::iterator a = alElementData.begin();

	// parse all element instances
	for (;i != alElements.end();++i,++a)
	{
		(*a).alInstances.resize((*i).NumOccur);
		PLY::ElementInstanceList::ParseInstanceList(pCur,&pCur,&(*i),&(*a));
	}

	DefaultLogger::get()->debug("PLY::DOM::ParseElementInstanceLists() succeeded");
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::DOM::ParseElementInstanceListsBinary (
	const char* pCur,
	const char** pCurOut,
	bool p_bBE)
{
	ai_assert(NULL != pCur && NULL != pCurOut);

	DefaultLogger::get()->debug("PLY::DOM::ParseElementInstanceListsBinary() begin");
	*pCurOut = pCur;
	
	alElementData.resize(alElements.size());

	std::vector<PLY::Element>::const_iterator i = alElements.begin();
	std::vector<PLY::ElementInstanceList>::iterator a = alElementData.begin();

	// parse all element instances
	for (;i != alElements.end();++i,++a)
	{
		(*a).alInstances.resize((*i).NumOccur);
		PLY::ElementInstanceList::ParseInstanceListBinary(pCur,&pCur,&(*i),&(*a),p_bBE);
	}

	DefaultLogger::get()->debug("PLY::DOM::ParseElementInstanceListsBinary() succeeded");
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::DOM::ParseInstanceBinary (const char* pCur,DOM* p_pcOut,bool p_bBE)
{
	ai_assert(NULL != pCur && NULL != p_pcOut);

	DefaultLogger::get()->debug("PLY::DOM::ParseInstanceBinary() begin");

	if(!p_pcOut->ParseHeader(pCur,&pCur,true))
	{
		DefaultLogger::get()->debug("PLY::DOM::ParseInstanceBinary() failure");
		return false;
	}
	if(!p_pcOut->ParseElementInstanceListsBinary(pCur,&pCur,p_bBE))
	{
		DefaultLogger::get()->debug("PLY::DOM::ParseInstanceBinary() failure");
		return false;
	}
	DefaultLogger::get()->debug("PLY::DOM::ParseInstanceBinary() succeeded");
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::DOM::ParseInstance (const char* pCur,DOM* p_pcOut)
{
	ai_assert(NULL != pCur);
	ai_assert(NULL != p_pcOut);

	DefaultLogger::get()->debug("PLY::DOM::ParseInstance() begin");


	if(!p_pcOut->ParseHeader(pCur,&pCur,false))
	{
		DefaultLogger::get()->debug("PLY::DOM::ParseInstance() failure");
		return false;
	}
	if(!p_pcOut->ParseElementInstanceLists(pCur,&pCur))
	{
		DefaultLogger::get()->debug("PLY::DOM::ParseInstance() failure");
		return false;
	}
	DefaultLogger::get()->debug("PLY::DOM::ParseInstance() succeeded");
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::ElementInstanceList::ParseInstanceList (
	const char* pCur,
	const char** pCurOut,
	const PLY::Element* pcElement, 
	PLY::ElementInstanceList* p_pcOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL != pcElement && NULL != p_pcOut);

	if (EEST_INVALID == pcElement->eSemantic || pcElement->alProperties.empty())
	{
		// if the element has an unknown semantic we can skip all lines
		// However, there could be comments
		for (unsigned int i = 0; i < pcElement->NumOccur;++i)
		{
			PLY::DOM::SkipComments(pCur,&pCur);
			SkipLine(pCur,&pCur);
		}
	}
	else
	{
		// be sure to have enough storage
		for (unsigned int i = 0; i < pcElement->NumOccur;++i)
		{
			PLY::DOM::SkipComments(pCur,&pCur);
			PLY::ElementInstance::ParseInstance(pCur, &pCur,pcElement,
				&p_pcOut->alInstances[i]);
		}
	}
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::ElementInstanceList::ParseInstanceListBinary (
	const char* pCur,
	const char** pCurOut,
	const PLY::Element* pcElement,
	PLY::ElementInstanceList* p_pcOut,
	bool p_bBE /* = false */)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL != pcElement && NULL != p_pcOut);

	// we can add special handling code for unknown element semantics since
	// we can't skip it as a whole block (we don't know its exact size
	// due to the fact that lists could be contained in the property list 
	// of the unknown element)
	for (unsigned int i = 0; i < pcElement->NumOccur;++i)
	{
		PLY::ElementInstance::ParseInstanceBinary(pCur, &pCur,pcElement,
			&p_pcOut->alInstances[i], p_bBE);
	}
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::ElementInstance::ParseInstance (
	const char* pCur,
	const char** pCurOut,
	const PLY::Element* pcElement,
	PLY::ElementInstance* p_pcOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL != pcElement && NULL != p_pcOut);

	if (!SkipSpaces(pCur, &pCur))return false;

	// allocate enough storage
	p_pcOut->alProperties.resize(pcElement->alProperties.size());

	std::vector<PLY::PropertyInstance>::iterator i = p_pcOut->alProperties.begin();
	std::vector<PLY::Property>::const_iterator  a = pcElement->alProperties.begin();
	for (;i != p_pcOut->alProperties.end();++i,++a)
	{
		if(!(PLY::PropertyInstance::ParseInstance(pCur, &pCur,&(*a),&(*i))))
		{
			DefaultLogger::get()->warn("Unable to parse property instance. "
				"Skipping this element instance");

			// skip the rest of the instance
			SkipLine(pCur, &pCur);

			PLY::PropertyInstance::ValueUnion v = PLY::PropertyInstance::DefaultValue((*a).eType);
			(*i).avList.push_back(v);
		}
	}
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::ElementInstance::ParseInstanceBinary (
	const char* pCur,
	const char** pCurOut,
	const PLY::Element* pcElement,
	PLY::ElementInstance* p_pcOut,
	bool p_bBE /* = false */)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL != pcElement && NULL != p_pcOut);

	// allocate enough storage
	p_pcOut->alProperties.resize(pcElement->alProperties.size());

	std::vector<PLY::PropertyInstance>::iterator i =  p_pcOut->alProperties.begin();
	std::vector<PLY::Property>::const_iterator   a =  pcElement->alProperties.begin();
	for (;i != p_pcOut->alProperties.end();++i,++a)
	{
		if(!(PLY::PropertyInstance::ParseInstanceBinary(pCur, &pCur,&(*a),&(*i),p_bBE)))
		{
			DefaultLogger::get()->warn("Unable to parse binary property instance. "
				"Skipping this element instance");

			(*i).avList.push_back(PLY::PropertyInstance::DefaultValue((*a).eType));
		}
	}
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::PropertyInstance::ParseInstance (const char* pCur,const char** pCurOut,
	const PLY::Property* prop, PLY::PropertyInstance* p_pcOut)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL !=  prop && NULL != p_pcOut);

	*pCurOut = pCur;

	// skip spaces at the beginning
	if (!SkipSpaces(pCur, &pCur))return false;

	if (prop->bIsList)
	{
		// parse the number of elements in the list
		PLY::PropertyInstance::ValueUnion v;
		PLY::PropertyInstance::ParseValue(pCur, &pCur,prop->eFirstType,&v);

		// convert to unsigned int
		unsigned int iNum = PLY::PropertyInstance::ConvertTo<unsigned int>(v,prop->eFirstType);

		// parse all list elements
		p_pcOut->avList.resize(iNum);
		for (unsigned int i = 0; i < iNum;++i)
		{
			if (!SkipSpaces(pCur, &pCur))return false;
			PLY::PropertyInstance::ParseValue(pCur, &pCur,prop->eType,&p_pcOut->avList[i]);
		}
	}
	else
	{
		// parse the property
		PLY::PropertyInstance::ValueUnion v;

		PLY::PropertyInstance::ParseValue(pCur, &pCur,prop->eType,&v);
		p_pcOut->avList.push_back(v);
	}
	SkipSpacesAndLineEnd(pCur, &pCur);
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
bool PLY::PropertyInstance::ParseInstanceBinary (
	const char*  pCur,
	const char** pCurOut,
	const PLY::Property* prop, 
	PLY::PropertyInstance* p_pcOut,
	bool p_bBE)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL != prop && NULL != p_pcOut);

	if (prop->bIsList)
	{
		// parse the number of elements in the list
		PLY::PropertyInstance::ValueUnion v;
		PLY::PropertyInstance::ParseValueBinary(pCur, &pCur,prop->eFirstType,&v,p_bBE);

		// convert to unsigned int
		unsigned int iNum = PLY::PropertyInstance::ConvertTo<unsigned int>(v,prop->eFirstType);

		// parse all list elements
		p_pcOut->avList.resize(iNum);
		for (unsigned int i = 0; i < iNum;++i){
			PLY::PropertyInstance::ParseValueBinary(pCur, &pCur,prop->eType,&p_pcOut->avList[i],p_bBE);
		}
	}
	else
	{
		// parse the property
		PLY::PropertyInstance::ValueUnion v;
		PLY::PropertyInstance::ParseValueBinary(pCur, &pCur,prop->eType,&v,p_bBE);
		p_pcOut->avList.push_back(v);
	}
	*pCurOut = pCur;
	return true;
}

// ------------------------------------------------------------------------------------------------
PLY::PropertyInstance::ValueUnion PLY::PropertyInstance::DefaultValue(
	PLY::EDataType eType)
{
	PLY::PropertyInstance::ValueUnion out;

	switch (eType)
	{
	case EDT_Float:
		out.fFloat = 0.f;
		return out;

	case EDT_Double:
		out.fDouble = 0.;
		return out;

	default: ;
	};
	out.iUInt = 0;
	return out;
}

// ------------------------------------------------------------------------------------------------
bool PLY::PropertyInstance::ParseValue(
	const char* pCur,
	const char** pCurOut,
	PLY::EDataType eType,
	PLY::PropertyInstance::ValueUnion* out)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL != out);

	register bool ret = true;
	*pCurOut = pCur;
	switch (eType)
	{
	case EDT_UInt:
	case EDT_UShort:
	case EDT_UChar:

		out->iUInt = (uint32_t)strtoul10(pCur, &pCur);
		break;

	case EDT_Int:
	case EDT_Short:
	case EDT_Char:

		out->iInt = (int32_t)strtol10(pCur, &pCur);
		break;

	case EDT_Float:

		pCur = fast_atoreal_move<float>(pCur,out->fFloat);
		break;

	case EDT_Double:

		float f;
		pCur = fast_atoreal_move<float>(pCur,f);
		out->fDouble = (double)f;
		break;

	default:
		ret = false;
	}
	*pCurOut = pCur;
	return ret;
}

// ------------------------------------------------------------------------------------------------
bool PLY::PropertyInstance::ParseValueBinary(
	const char* pCur,
	const char** pCurOut,
	PLY::EDataType eType,
	PLY::PropertyInstance::ValueUnion* out, 
	bool p_bBE)
{
	ai_assert(NULL != pCur && NULL != pCurOut && NULL != out);

	register bool ret = true;
	switch (eType)
	{
	case EDT_UInt:
		out->iUInt = (uint32_t)*((uint32_t*)pCur);
		pCur += 4;
		
		// Swap endianess
		if (p_bBE)ByteSwap::Swap((int32_t*)&out->iUInt);
		break;

	case EDT_UShort:
		{
		int16_t i = *((uint16_t*)pCur);

		// Swap endianess
		if (p_bBE)ByteSwap::Swap(&i);
		out->iUInt = (uint32_t)i;
		pCur += 2;
		break;
		}

	case EDT_UChar:
		{
		out->iUInt = (uint32_t)(*((uint8_t*)pCur));
		pCur ++;
		break;
		}

	case EDT_Int:
		out->iInt = *((int32_t*)pCur);
		pCur += 4;
		
		// Swap endianess
		if (p_bBE)ByteSwap::Swap(&out->iInt);
		break;

	case EDT_Short:
		{
		int16_t i = *((int16_t*)pCur);

		// Swap endianess
		if (p_bBE)ByteSwap::Swap(&i);
		out->iInt = (int32_t)i;
		pCur += 2;
		break;
		}

	case EDT_Char:
		out->iInt = (int32_t)*((int8_t*)pCur);
		pCur ++;
		break;

	case EDT_Float:
		{
		out->fFloat = *((float*)pCur);

		// Swap endianess
		if (p_bBE)ByteSwap::Swap((int32_t*)&out->fFloat);
		pCur += 4;
		break;
		}
	case EDT_Double:
		{
		out->fDouble = *((double*)pCur);

		// Swap endianess
		if (p_bBE)ByteSwap::Swap((int64_t*)&out->fDouble);
		pCur += 8;
		break;
		}
	default:
		ret = false;
	}
	*pCurOut = pCur;
	return ret;
}

#endif // !! ASSIMP_BUILD_NO_PLY_IMPORTER