diff options
Diffstat (limited to 'libs/assimp/code/AssetLib/DXF/DXFHelper.h')
| -rw-r--r-- | libs/assimp/code/AssetLib/DXF/DXFHelper.h | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/libs/assimp/code/AssetLib/DXF/DXFHelper.h b/libs/assimp/code/AssetLib/DXF/DXFHelper.h new file mode 100644 index 0000000..e50c471 --- /dev/null +++ b/libs/assimp/code/AssetLib/DXF/DXFHelper.h @@ -0,0 +1,222 @@ +/* +Open Asset Import Library (assimp) +---------------------------------------------------------------------- + +Copyright (c) 2006-2022, assimp 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 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 DXFHelper.h + * @brief Internal utilities for the DXF loader. + */ + +#ifndef INCLUDED_DXFHELPER_H +#define INCLUDED_DXFHELPER_H + +#include <assimp/LineSplitter.h> +#include <assimp/TinyFormatter.h> +#include <assimp/StreamReader.h> +#include <assimp/fast_atof.h> +#include <vector> +#include <assimp/DefaultLogger.hpp> + +namespace Assimp { +namespace DXF { + +// read pairs of lines, parse group code and value and provide utilities +// to convert the data to the target data type. +// do NOT skip empty lines. In DXF files, they count as valid data. +class LineReader { +public: + LineReader(StreamReaderLE& reader) + : splitter(reader,false,true) + , groupcode( 0 ) + , value() + , end() { + // empty + } + + // ----------------------------------------- + bool Is(int gc, const char* what) const { + return groupcode == gc && !strcmp(what,value.c_str()); + } + + // ----------------------------------------- + bool Is(int gc) const { + return groupcode == gc; + } + + // ----------------------------------------- + int GroupCode() const { + return groupcode; + } + + // ----------------------------------------- + const std::string& Value() const { + return value; + } + + // ----------------------------------------- + bool End() const { + return !((bool)*this); + } + + // ----------------------------------------- + unsigned int ValueAsUnsignedInt() const { + return strtoul10(value.c_str()); + } + + // ----------------------------------------- + int ValueAsSignedInt() const { + return strtol10(value.c_str()); + } + + // ----------------------------------------- + float ValueAsFloat() const { + return fast_atof(value.c_str()); + } + + // ----------------------------------------- + /** pseudo-iterator increment to advance to the next (groupcode/value) pair */ + LineReader& operator++() { + if (end) { + if (end == 1) { + ++end; + } + return *this; + } + + try { + groupcode = strtol10(splitter->c_str()); + splitter++; + + value = *splitter; + splitter++; + + // automatically skip over {} meta blocks (these are for application use + // and currently not relevant for Assimp). + if (value.length() && value[0] == '{') { + + size_t cnt = 0; + for(;splitter->length() && splitter->at(0) != '}'; splitter++, cnt++); + + splitter++; + ASSIMP_LOG_VERBOSE_DEBUG("DXF: skipped over control group (",cnt," lines)"); + } + } catch(std::logic_error&) { + ai_assert(!splitter); + } + if (!splitter) { + end = 1; + } + return *this; + } + + // ----------------------------------------- + LineReader& operator++(int) { + return ++(*this); + } + + + // ----------------------------------------- + operator bool() const { + return end <= 1; + } + +private: + LineSplitter splitter; + int groupcode; + std::string value; + int end; +}; + +// represents a POLYLINE or a LWPOLYLINE. or even a 3DFACE The data is converted as needed. +struct PolyLine { + PolyLine() + : flags() { + // empty + } + + std::vector<aiVector3D> positions; + std::vector<aiColor4D> colors; + std::vector<unsigned int> indices; + std::vector<unsigned int> counts; + unsigned int flags; + + std::string layer; + std::string desc; +}; + +// reference to a BLOCK. Specifies its own coordinate system. +struct InsertBlock { + InsertBlock() + : pos() + , scale(1.f,1.f,1.f) + , angle() + , name() { + // empty + } + + aiVector3D pos; + aiVector3D scale; + float angle; + + std::string name; +}; + + +// keeps track of all geometry in a single BLOCK. +struct Block +{ + std::vector< std::shared_ptr<PolyLine> > lines; + std::vector<InsertBlock> insertions; + + std::string name; + aiVector3D base; +}; + + +struct FileData +{ + // note: the LAST block always contains the stuff from ENTITIES. + std::vector<Block> blocks; +}; + +} +} // Namespace Assimp + +#endif |