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win32prog

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注册时间： 2019-11-28

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用一用 dxflib 读/写 dxf 文件

dxflib官网: https://www.ribbonsoft.com/

使用手册: https://www.ribbonsoft.com/doc/dxflib/2.5/reference/dxflib-reference-manual.pdf

qcad&dxflib: https://qcad.org/en/90-dxflib

win32prog

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注册时间： 2019-11-28

已发帖子： 138

积分： 138

Re: 用一用 dxflib 读/写 dxf 文件

找到的第一份代码 https://github.com/Luckyxcj/dxflib

是一个调用 dxflib 库写 dxf 文件,

#include <QCoreApplication>
#include <QDebug>
#include "src/dl_dxf.h"
#include "src/dl_creationadapter.h"
#include "src/dl_attributes.h"
#include "src/dl_codes.h"
#include "src/dl_entities.h"
#include "src/dl_exception.h"
#include "src/dl_global.h"
#include "src/dl_writer.h"
#include "src/dl_writer_ascii.h"
#include <QList>
#include <QString>
#include <QFile>



int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    QFile file("myfile.dxf");
    if(file.exists())
    {
        file.remove();
        qDebug()<<"DEL dxf";
    }


#if 1

    DL_Dxf dxf;
    DL_Codes::version exportVersion = DL_Codes::AC1015;
    DL_WriterA* dw = dxf.out("myfile.dxf", exportVersion);
    if (dw==NULL)
    {
        printf("Cannot open file 'myfile.dxf' \
            for writing.");
        // abort function e.g. with return
    }

#if 1
    // int variable:
    //单位
    dw->dxfString(9, "$INSUNITS");
    dw->dxfInt(70, 4);
    // real (double, float) variable:
    dw->dxfString(9, "$DIMEXE");
    dw->dxfReal(40, 1.25);
    // string variable:
    dw->dxfString(9, "$TEXTSTYLE");
    dw->dxfString(7, "Standard");
    // vector variable:
    dw->dxfString(9, "$LIMMIN");
    dw->dxfReal(10, 0.0);
    dw->dxfReal(20, 0.0);
#endif
    //关闭header
    dw->sectionEnd();

    //写tablesection
    //.1 打开tables section
    dw->sectionTables();
    //.2 写viewports
    dxf.writeVPort(*dw);
    //.3写linetypes
    dw->tableLinetypes(25);

    dxf.writeLinetype(*dw, DL_LinetypeData("BYBLOCK","",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("BYLAYER","",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("CONTINUOUS","",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("ACAD_ISO02W100", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("ACAD_ISO03W100", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("ACAD_ISO04W100", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("ACAD_ISO05W100", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("BORDER", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("BORDER2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("BORDERX2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("CENTER", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("CENTER2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("CENTERX2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DASHDOT", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DASHDOT2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DASHDOTX2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DASHED", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DASHED2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DASHEDX2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DIVIDE", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DIVIDE2", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DIVIDEX2","",0,0, 0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DOT", "",0,0,0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DOT2","",0,0, 0));
    dxf.writeLinetype(*dw, DL_LinetypeData("DOTX2", "",0,0,0));

    dw->tableEnd();

    //.4写layers 0不可以省略
    int numberOfLayers = 3;

    dw->tableLayers(numberOfLayers);

    dxf.writeLayer(*dw,
        DL_LayerData("0", 0),
        DL_Attributes( std::string(""),
                       DL_Codes::red,
                       -1,
                       100,
                       "BYLAYER"
                       ));     // default line style

    dxf.writeLayer(*dw,
        DL_LayerData("mainlayer", 0),
        DL_Attributes());//CONTINUOUS

    dxf.writeLayer(*dw,
        DL_LayerData("anotherlayer", 0),
        DL_Attributes());

    dw->tableEnd();
    //.5其他tables 不必要
  //  dxf.writeStyle(*dw,DL_StyleData());

    //。6写dimension styles
    dxf.writeDimStyle(*dw,
                      1,
                      1,
                      1,
                      1,
                      1);

    dxf.writeBlockRecord(*dw);
#if 1
    dxf.writeBlockRecord(*dw, "myblock1");
    dxf.writeBlockRecord(*dw, "myblock2");
#endif
    dw->tableEnd();
    //.7结束tables section
    dw->sectionEnd();
    //写blocks section
    dw->sectionBlocks();

    dxf.writeBlock(*dw,
        DL_BlockData("*Model_Space", 0, 0.0, 0.0, 0.0));
    dxf.writeEndBlock(*dw, "*Model_Space");

    dxf.writeBlock(*dw,
        DL_BlockData("*Paper_Space", 0, 0.0, 0.0, 0.0));
    dxf.writeEndBlock(*dw, "*Paper_Space");

    dxf.writeBlock(*dw,
        DL_BlockData("*Paper_Space0", 0, 0.0, 0.0, 0.0));
    dxf.writeEndBlock(*dw, "*Paper_Space0");

    dxf.writeBlock(*dw,
        DL_BlockData("myblock1", 0, 0.0, 0.0, 0.0));

    // ...
    // write block entities e.g. with dxf.writeLine(), ..
    // ...
    dxf.writeEndBlock(*dw, "myblock1");

    dxf.writeBlock(*dw,
        DL_BlockData("myblock2", 0, 0.0, 0.0, 0.0));

    // ...
    // write block entities e.g. with dxf.writeLine(), ..
    // ...
    dxf.writeEndBlock(*dw, "myblock2");

    dw->sectionEnd();

    //写entities section
    dw->sectionEntities();

    // write all your entities..

    dxf.writePoint(*dw,
        DL_PointData(10.0, 45.0, 0.0),
        DL_Attributes());//"mainlayer", 256, -1, "BYLAYER"

    dxf.writeLine(*dw,
        DL_LineData(25.0, 30.0, 0.0,   // start point
                 100.0, 120.0, 0.0),   // end point
        //DL_Attributes("mainlayer", 256, -1, "BYLAYER"));
                  DL_Attributes());
    dxf.writeArc(*dw,
                 DL_ArcData(50.0,50.0,0.0,
                            20,0.0,20),
                 DL_Attributes(std::string(""),
                               DL_Codes::red,
                               -1,
                               100,
                               "BYLAYER"
                               ));

    dxf.writeCircle(*dw,DL_CircleData(50.0,50.0,5.0,20.0),
                    DL_Attributes(std::string(""),
                                  DL_Codes::red,
                                  -1,
                                  1,
                                  "BYLAYER"
                                  ));

    dw->sectionEnd();
    //写objects section
    dxf.writeObjects(*dw);
    dxf.writeObjectsEnd(*dw);
    //结束
    dw->dxfEOF();
    dw->close();
    delete dw;
#endif
    qDebug()<< "end"<<endl;
    return a.exec();
}

win32prog

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注册时间： 2019-11-28

已发帖子： 138

积分： 138

Re: 用一用 dxflib 读/写 dxf 文件

公司用的 dxf 解析库各种问题， 发现 qcad 用的就是 dxflib 相当完善， 所以打算强怼 dxflib 了。