1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libs/assimp/DXFHelper.h	Sat Feb 01 19:58:19 2014 +0200
     1.3 @@ -0,0 +1,230 @@
     1.4 +/*
     1.5 +Open Asset Import Library (assimp)
     1.6 +----------------------------------------------------------------------
     1.7 +
     1.8 +Copyright (c) 2006-2012, assimp team
     1.9 +All rights reserved.
    1.10 +
    1.11 +Redistribution and use of this software in source and binary forms, 
    1.12 +with or without modification, are permitted provided that the 
    1.13 +following conditions are met:
    1.14 +
    1.15 +* Redistributions of source code must retain the above
    1.16 +  copyright notice, this list of conditions and the
    1.17 +  following disclaimer.
    1.18 +
    1.19 +* Redistributions in binary form must reproduce the above
    1.20 +  copyright notice, this list of conditions and the
    1.21 +  following disclaimer in the documentation and/or other
    1.22 +  materials provided with the distribution.
    1.23 +
    1.24 +* Neither the name of the assimp team, nor the names of its
    1.25 +  contributors may be used to endorse or promote products
    1.26 +  derived from this software without specific prior
    1.27 +  written permission of the assimp team.
    1.28 +
    1.29 +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
    1.30 +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
    1.31 +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    1.32 +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
    1.33 +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    1.34 +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
    1.35 +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    1.36 +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
    1.37 +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
    1.38 +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
    1.39 +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    1.40 +
    1.41 +----------------------------------------------------------------------
    1.42 +*/
    1.43 +
    1.44 +/** @file  DXFHelper.h 
    1.45 + *  @brief Internal utilities for the DXF loader.
    1.46 + */
    1.47 +
    1.48 +#ifndef INCLUDED_DXFHELPER_H
    1.49 +#define INCLUDED_DXFHELPER_H
    1.50 +
    1.51 +#include "LineSplitter.h"
    1.52 +#include "TinyFormatter.h"
    1.53 +#include "StreamReader.h"
    1.54 +
    1.55 +namespace Assimp {
    1.56 +	namespace DXF {
    1.57 +
    1.58 +
    1.59 +// read pairs of lines, parse group code and value and provide utilities
    1.60 +// to convert the data to the target data type.
    1.61 +class LineReader
    1.62 +{
    1.63 +
    1.64 +public:
    1.65 +
    1.66 +	LineReader(StreamReaderLE& reader)
    1.67 +		 // do NOT skip empty lines. In DXF files, they count as valid data.
    1.68 +		: splitter(reader,false,true)
    1.69 +		, end()
    1.70 +	{
    1.71 +	}
    1.72 +
    1.73 +public:
    1.74 +
    1.75 +
    1.76 +	// -----------------------------------------
    1.77 +	bool Is(int gc, const char* what) const {
    1.78 +		return groupcode == gc && !strcmp(what,value.c_str());
    1.79 +	}
    1.80 +
    1.81 +	// -----------------------------------------
    1.82 +	bool Is(int gc) const {
    1.83 +		return groupcode == gc;
    1.84 +	}
    1.85 +
    1.86 +	// -----------------------------------------
    1.87 +	int GroupCode() const {
    1.88 +		return groupcode;
    1.89 +	}
    1.90 +
    1.91 +	// -----------------------------------------
    1.92 +	const std::string& Value() const {
    1.93 +		return value;
    1.94 +	}
    1.95 +
    1.96 +	// -----------------------------------------
    1.97 +	bool End() const {
    1.98 +		return !((bool)*this);
    1.99 +	}
   1.100 +
   1.101 +public:
   1.102 +
   1.103 +	// -----------------------------------------
   1.104 +	unsigned int ValueAsUnsignedInt() const {
   1.105 +		return strtoul10(value.c_str());
   1.106 +	}
   1.107 +
   1.108 +	// -----------------------------------------
   1.109 +	int ValueAsSignedInt() const {
   1.110 +		return strtol10(value.c_str());
   1.111 +	}
   1.112 +
   1.113 +	// -----------------------------------------
   1.114 +	float ValueAsFloat() const {
   1.115 +		return fast_atof(value.c_str());
   1.116 +	}
   1.117 +
   1.118 +public:
   1.119 +
   1.120 +	// -----------------------------------------
   1.121 +	/** pseudo-iterator increment to advance to the next (groupcode/value) pair */
   1.122 +	LineReader& operator++() {
   1.123 +		if (end) {
   1.124 +			if (end == 1) {
   1.125 +				++end;
   1.126 +			}
   1.127 +			return *this;
   1.128 +		}
   1.129 +
   1.130 +		try {
   1.131 +			groupcode = strtol10(splitter->c_str());
   1.132 +			splitter++;
   1.133 +
   1.134 +			value = *splitter;
   1.135 +			splitter++;
   1.136 +
   1.137 +			// automatically skip over {} meta blocks (these are for application use
   1.138 +			// and currently not relevant for Assimp).
   1.139 +			if (value.length() && value[0] == '{') {
   1.140 +
   1.141 +				size_t cnt = 0;
   1.142 +				for(;splitter->length() && splitter->at(0) != '}'; splitter++, cnt++);
   1.143 +
   1.144 +				splitter++;
   1.145 +				DefaultLogger::get()->debug((Formatter::format("DXF: skipped over control group ("),cnt," lines)"));
   1.146 +			}
   1.147 +		} catch(std::logic_error&) {
   1.148 +			ai_assert(!splitter);
   1.149 +		}
   1.150 +		if (!splitter) {
   1.151 +			end = 1;
   1.152 +		}
   1.153 +		return *this;
   1.154 +	}
   1.155 +
   1.156 +	// -----------------------------------------
   1.157 +	LineReader& operator++(int) {
   1.158 +		return ++(*this);
   1.159 +	}
   1.160 +
   1.161 +
   1.162 +	// -----------------------------------------
   1.163 +	operator bool() const {
   1.164 +		return end <= 1;
   1.165 +	}
   1.166 +
   1.167 +private:
   1.168 +
   1.169 +	LineSplitter splitter;
   1.170 +	int groupcode;
   1.171 +	std::string value;
   1.172 +	int end;
   1.173 +};
   1.174 +
   1.175 +
   1.176 +
   1.177 +// represents a POLYLINE or a LWPOLYLINE. or even a 3DFACE The data is converted as needed.
   1.178 +struct PolyLine
   1.179 +{
   1.180 +	PolyLine()
   1.181 +		: flags()
   1.182 +	{}
   1.183 +	
   1.184 +	std::vector<aiVector3D> positions;
   1.185 +	std::vector<aiColor4D>  colors;
   1.186 +	std::vector<unsigned int> indices;
   1.187 +	std::vector<unsigned int> counts;
   1.188 +	unsigned int flags;
   1.189 +
   1.190 +	std::string layer;
   1.191 +	std::string desc;
   1.192 +};
   1.193 +
   1.194 +
   1.195 +// reference to a BLOCK. Specifies its own coordinate system.
   1.196 +struct InsertBlock
   1.197 +{
   1.198 +	InsertBlock()
   1.199 +		: scale(1.f,1.f,1.f)
   1.200 +		, angle()
   1.201 +	{}
   1.202 +
   1.203 +	aiVector3D pos;
   1.204 +	aiVector3D scale;
   1.205 +	float angle;
   1.206 +
   1.207 +	std::string name;
   1.208 +};
   1.209 +
   1.210 +
   1.211 +// keeps track of all geometry in a single BLOCK.
   1.212 +struct Block
   1.213 +{
   1.214 +	std::vector< boost::shared_ptr<PolyLine> > lines;
   1.215 +	std::vector<InsertBlock> insertions;
   1.216 +
   1.217 +	std::string name;
   1.218 +	aiVector3D base;
   1.219 +};
   1.220 +
   1.221 +
   1.222 +struct FileData
   1.223 +{
   1.224 +	// note: the LAST block always contains the stuff from ENTITIES.
   1.225 +	std::vector<Block> blocks;
   1.226 +};
   1.227 +
   1.228 +
   1.229 +
   1.230 +
   1.231 +
   1.232 +}}
   1.233 +#endif