基于dxflib读取DXF文件

// DXF_test.cpp : 定义控制台应用程序的入口点。

#include "stdafx.h"

#include <iostream> #include <stdlib.h> #include <stdio.h>

#include "dl_dxf.h" #include "dl_creationadapter.h"

#include "test_creationclass.h"

void usage(); void testReading(char* file); void testWriting();

int main(int argc, char** argv) {

    char *filepath=".\\demo.dxf";     testReading(filepath);

    testWriting();

    return 0; }

/* * @brief Prints error message if file name not specified as command * line argument. */ void usage() {     std::cout << "\nUsage: test <DXF file>\n\n"; }

void testReading(char* file) {     // Load DXF file into memory:     std::cout << "Reading file " << file << "...\n";     Test_CreationClass* creationClass = new Test_CreationClass();     DL_Dxf* dxf = new DL_Dxf();     if (!dxf->in(file, creationClass)) { // if file open failed         std::cerr << file << " could not be opened.\n";         return;     }

    std::cout << std::endl << "reading finish..." << std::endl;     delete dxf;     delete creationClass; }

void testWriting() {     DL_Dxf* dxf = new DL_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     }

    dxf->writeHeader(*dw);     dw->sectionEnd();     dw->sectionTables();     dxf->writeVPort(*dw);

    dw->tableLinetypes(3);     dxf->writeLinetype(*dw, DL_LinetypeData("BYBLOCK", "BYBLOCK", 0, 0, 0.0));     dxf->writeLinetype(*dw, DL_LinetypeData("BYLAYER", "BYLAYER", 0, 0, 0.0));     dxf->writeLinetype(*dw, DL_LinetypeData("CONTINUOUS", "Continuous", 0, 0, 0.0));     dw->tableEnd();

    int numberOfLayers = 3;     dw->tableLayers(numberOfLayers);

    dxf->writeLayer(*dw,         DL_LayerData("0", 0),         DL_Attributes(             std::string(""),      // leave empty             DL_Codes::black,        // default color             100,                  // default width             "CONTINUOUS", 1.0));       // default line style

    dxf->writeLayer(*dw,         DL_LayerData("mainlayer", 0),         DL_Attributes(             std::string(""),             DL_Codes::red,             100,             "CONTINUOUS", 1.0));

    dxf->writeLayer(*dw,         DL_LayerData("anotherlayer", 0),         DL_Attributes(             std::string(""),             DL_Codes::black,             100,             "CONTINUOUS", 1.0));

    dw->tableEnd();

    dw->tableStyle(1);     dxf->writeStyle(*dw, DL_StyleData("standard", 0, 2.5, 1.0, 0.0, 0, 2.5, "txt", ""));     dw->tableEnd();

    dxf->writeView(*dw);     dxf->writeUcs(*dw);

    dw->tableAppid(1);     dxf->writeAppid(*dw, "ACAD");     dw->tableEnd();

    dxf->writeDimStyle(*dw, 1, 1, 1, 1, 1);

    dxf->writeBlockRecord(*dw);     dxf->writeBlockRecord(*dw, "myblock1");     dxf->writeBlockRecord(*dw, "myblock2");     dw->tableEnd();

    dw->sectionEnd();

    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();     dw->sectionEntities();

    // write all entities in model space:     dxf->writePoint(         *dw,         DL_PointData(10.0,             45.0,             0.0),         DL_Attributes("mainlayer", 256, -1, "BYLAYER", 1.0));

    dxf->writeLine(         *dw,         DL_LineData(25.0,   // start point             30.0,             0.0,             100.0,   // end point             120.0,             0.0),         DL_Attributes("mainlayer", 256, -1, "BYLAYER", 1.0));

    dw->sectionEnd();

    dxf->writeObjects(*dw);     dxf->writeObjectsEnd(*dw);

    dw->dxfEOF();     dw->close();

    std::cout << "writting finish..." << std::endl;

    delete dw;     delete dxf; }

（1）官网下载dxflib源码文件

（2）src文件夹下的所有文件加入到工程项目下

（3）编译报sprintf错误：

解决方法：右键工程名-->属性-->C/C++-->预处理器-->预处理器定义，编辑右边输入框加入：

_CRT_SECURE_NO_WARNINGS

保存。

（4）编译提示缺少stdafx.h头文件：

解决方法：在每个加入的cpp文件最前面加上#include "stdafx.h"

(5)编译无错误无警告。

（6）添加下载的文件下example下readwrite文件夹下的test_creationclass.cpp和test_creationclass.h文件到项目中。

（7）把工程的main函数所在文件替换成以上代码。上述代码会读取当前目录下的demo.dxf，然后写myfile.dxf文件。

 

完整工程下载地址：https://download.csdn.net/download/qq_33628827/11205279