用C语言生成DXF文件.doc

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1、（1）用C语言生成DXF文件#include"stdio.h"#include"conio.h"FILE*fp;voidhsec(),endsec();voidline();voidarc();voidtext();main(){chara[8]="KEY40";clrscr();fp=fopen("d:\key.dxf","w");if(fp==NULL){printf("can'topen");exit(1);}hsec(fp);line(fp,20.0,20.0,50.0,20.0);line(fp,20.0,30.0,50.0,30.0);arc(fp,20.0,25.

2、0,5.0,90.0,270.0);arc(fp,50.0,25.0,5.0,-90.0,90.0);text(fp,30.0,45.0,3.5,0.0,0.0,a);endsec(fp);fclose(fp);}////////////接口子程序///////////////voidhsec(FILE*fp){fprintf(fp,"0SECTION2ENTITIES");/***为换行符***/}voidline(FILE*fp,doublex1,doubley1,doublex2,doubley2){fprintf(fp,"0line8A10

3、");//A为层名fprintf(fp,"%9.4f",x1);fprintf(fp,"20");fprintf(fp,"%9.4f",y1);fprintf(fp,"11");fprintf(fp,"%9.4f",x2);fprintf(fp,"21");fprintf(fp,"%9.4f",y2);}voidarc(FILE*fp,doublex,doubley,doubler,doublesang,doubleeang){fprintf(fp,"0arc8A10");//A为层名fprintf(fp,"%9.4f",x);

4、fprintf(fp,"20");fprintf(fp,"%9.4f",y);fprintf(fp,"40");fprintf(fp,"%9.4f",r);fprintf(fp,"50");fprintf(fp,"%9.4f",sang);fprintf(fp,"51");fprintf(fp,"%9.4f",eang);}voidcirlce(FILE*fp,doublex,doubley,doubler){fprintf(fp,"0circle8A10");//A为层名fprintf(fp,"%9.4f",x);fprint

5、f(fp,"20");fprintf(fp,"%9.4f",y);fprintf(fp,"40");fprintf(fp,"%9.4f",r);}voidtext(FILE*fp,doublex,doubley,doubleh,doublerota,doubleang,char*tex){fprintf(fp,"0text8A10");//A为层名fprintf(fp,"%9.4f",x);fprintf(fp,"20");fprintf(fp,"%9.4f",y);fprintf(fp,"40");fprintf(fp,"%9.4

6、f",h);fprintf(fp,"1");fprintf(fp,"%s",tex);fprintf(fp,"50");fprintf(fp,"%9.4f",rota);fprintf(fp,"51");fprintf(fp,"%9.4f",ang);}voidendsec(FILE*fp){fprintf(fp,"0ENDSEC0EOF");}