C 语言直接写 DWG 图形文件接口Word格式文档下载.docx
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运行该程序后，程序读取数据文件DEMO.DAT文件，
经处理后，利用INT_DWG接口程序自动生成图形
文件DEMO.DWG。
DEMO.DAT实例用的原始数据文件
DEMO.DWG实例产生的DWG结果文件
CreateDate:
1993.3.29304
LastUpdate:
1994.1.16320
17Dpbgn/Dpvert/Dpend（）352
26Dvtext（）384
WrittedbyJYC.
-----------------------------------------------------------------------*/
#include
#defineDISTANCEdouble
#defineLENGTHdouble
#defineANGLEdouble
#defineHEIGHTdouble
#defineWIDTHdouble
#defineSCALEdouble
#defineRADIUSdouble
#defineNUMBERint
#defineMAXANGMAXFLOAT
#definediz（a,b,c,d）（（a）*（d）-（b）*（c））
#definesqr（x）（x）*（x）
#definePolar（p,p1,a,l）（p）.x=（p1）.x+（l）*cos（a）;
（p）.y=（p1）.y+（l）*sin（a）
#defineDistance（p,p2）sqrt（sqr（（p2）.x-（p）.x）+sqr（（p2）.y-（p）.y））
#defineMidpt（pt,pt1,pt2）pt-x=（pt1-x+pt2-x）/2;
pt-y=（pt1-y+pt2-y）/2
#defineSetLayer（x）D_Layer=x
#defineSetWidth（x）D_Width=x
#defineSetTexts（st,ht）D_Tstyle=st;
D_Theight=ht
#defineSetPoint（pt,u,v）pt.x=u;
pt.y=v
#defineSetQpt（pt,p1）memcpy（&
pt,&
p1,sizeof（pt））
#defineSetptxy（p,p1,x,y）（p）.x=（p1）.x+x;
（p）.y=（p1）.y+y
typedefstruct{doublex,y;
}
POINT;
typedefenum{FALSE,TRUE}
BOOL;
voidOpenDwg（char*dwgn）;
voidCloseDwg（void）;
voidSetPts（NUMBERptn,POINT*pts,...）;
voidDline（POINTpt1,POINTpt2）;
voidDpline（NUMBERptn,POINT*pts）;
voidDppts（NUMBERptn,...）;
voidDpbgn（BOOLclosed）;
voidDpvert（POINTpt）;
voidDpvertxy（doublex,doubley）;
voidDpend（void）;
voidDcircle（POINTpt1,DISTANCEr）;
voidDarc（POINTpt1,RADIUSr,ANGLEsa,ANGLEse）;
voidDtext（POINTpt1,ANGLEang,char*txt）;
voidDvtext（POINTpt1,char*txt）;
voidDinsert（NUMBERbn,POINTpt1,SCALEsx,SCALEsy,ANGLEang）;
voidDprintf（POINTpt1,ANGLEang,char*format,...）;
voidaxbyc（POINT*pt1,POINT*pt2,float*a,float*b,float*c）;
BOOLintspt（POINT*pt,POINT*p11,POINT*p12,POINT*p21,POINT*p22）;
ANGLEangle（POINT*pt1,POINT*pt2）;
DISTANCEperdist（POINT*pt,POINT*p1,POINT*p2）;
staticvoidfilcpy（longlen）;
staticlongfilpcp（longdt）;
staticvoidfilecp（void）;
staticFILE*dwgh,*dwgf,*dwgt;
staticlongent_p,pln_p;
NUMBERD_Layer=0;
NUMBERD_Tstyle=0;
NUMBERD_Tjustify=0;
HEIGHTD_Theight=1.0;
WIDTHD_Width=0.0;
voidOpenDwg（char*dwgn）
{
charfn[20];
strcpy（fn,dwgn）;
strcat（fn,"
.dwg"
）;
dwgh=fopen（"
dwg.hed"
"
rb"
dwgf=fopen（fn,"
wb"
dwgt=fopen（"
dwg.tmp"
fseek（dwgh,0,SEEK_SET）;
filcpy（0x14）;
/*Head14h*/
ent_p=filpcp（0）;
/*ent_p*/
}
voidCloseDwg（void）
longent_l,
tab_p,
blk_t_p,
lay_t_p,
sty_t_p,
ltp_t_p,
viw_t_p,
blk_p,
dwg_l;
FILE*tmpf;
fclose（dwgt）;
ent_l=filelength（fileno（dwgt））-0x28;
fseek（dwgh,0x18,SEEK_SET）;
filpcp（ent_l）;
/*tab_p*/
/*blk_d_p*/
filpcp（0）;
/*unknown*/
/*dwg_l*/
filcpy（6）;
/*blk_t_p*/
/*lay_t_p*/
/*sty_t_p*/
/*ltp_t_p*/
/*vie_t_p*/
filcpy（0x4AE）;
/*SystemVariable*/
tmpf=dwgh;
dwgh=dwgt;
filcpy（ent_l+0x28）;
dwgh=tmpf;
fseek（dwgh,0x28,SEEK_CUR）;
filecp（）;
fclose（dwgh）;
fclose（tmpf）;
fclose（dwgf）;
/*unlink（"
*/
voidDline（POINTpt1,POINTpt2）
charstr[8]={0x01,0x04,0x28,0,0,0,0,0};
str[4]=D_Layer;
fwrite（str,8,1,dwgt）;
fwrite（&
pt1,16,1,dwgt）;
pt2,16,1,dwgt）;
voidDpline（NUMBERptn,POINT*pts）
charstr[8]={0x13,0x80,0x18,0,0,0,6,0},
stc[9]={0x13,0x80,0x19,0,0,0,7,0,1},
sti[8]={0x14,0x00,0x18,0,0,0,0,0},
stn[8]={0x11,0x00,0x0C,0,0,0,0,0};
NUMBERi;
stc[4]=D_Layer;
sti[4]=D_Layer;
stn[4]=D_Layer;
pln_p=ftell（dwgt）+ent_p;
if（ptn0）
else
fwrite（stc,9,1,dwgt）;
D_Width,8,1,dwgt）;
for（i=0;
i
/*------------------------------------------------------------------------
INT_DWG.H:
InterfaceToAutoCADDWGfileModule.
History:
1992.4.12FCGEOM
1992.11.3INT_DWG
1994.1.17Dpbgn/Dpvert/Dpend
1993.3.27ByJYCCo.
----------------------------------------------------------------------*/
#definedxy（x,y）（double）（x）,（double）（y）
pt.y=v
#defineDistance（p1,p2）sqrt（sqr（（p2）.x-（p1）.x）+sqr（（p2）.y-（p1）.y））
#defineMidpt（p,p1,p2）p.x=（p1.x+p2.x）/2;
p.y=（p1.y+p2.y）/2
#defineAngle（p1,p2）angle（&
p1,&
p2）
#defineIntspt（p,s,q,u,v）intspt（&
p,&
s,&
q,&
u,&
v）
#definePerdist（p,p1,p2）perdist（&
externvoidOpenDwg（char*dwgn）;
externvoidCloseDwg（void）;
externvoidSetPts（NUMBERptn,POINT*pts,...）;
externvoidDline（POINTpt1,POINTpt2）;
externvoidDpline（NUMBERptn,POINT*pts）;
externvoidDppts（NUMBERptn,...）;
externvoidDpbgn（BOOLclosed）;
externvoidDpvert（POINTpt）;
externvoidDpvertxy（doublex,doubley）;
externvoidDpend（void）;
externvoidDcircle（POINTpt1,DISTANCEr）;
externvoidDarc（POINTpt1,RADIUSr,ANGLEsa,ANGLEse）;
externvoidDtext（POINTpt1,ANGLEang,char*txt）;
externvoidDvtext（POINTpt1,char*txt）;
externvoidDinsert（NUMBERbn,POINTpt1,SCALEsx,SCALEsy,ANGLEang）;
externvoidDprintf（POINTpt1,ANGLEang,char*format,...）;
externvoidintspt（POINT*p,POINT*p1,POINT*p2,POINT*p3,POINT*p4）;
externvoidaxbyc（POINT*p1,POINT*p2,float*a,float*b,float*c）;
externDISTANCEperdist（POINT*p,POINT*p1,POINT*p2）;
externANGLEangle（POINT*p1,POINT*p2）;
externNUMBERD_Layer;
externWIDTHD_Width;
externHEIGHTD_Theight;
externNUMBERD_Tstyle;
externNUMBERD_Tjustify;
--------------------------------------------------------------------------------
DEMO.C
MicroWaveApplication:
1994.1.25Copyfromdemo.c105
26MWhead/topo/build
Dborder/globe/dthtp/name/symbol
ah[3]={0,ah,ah2}paralleloperate
27LAY_BORD/TOPO/BUILD_0/1/2304
#defineparameters312proj314
WrittenbyJYC.
----------------------------------------------------------------------*/
#include"
int_dwg.h"
#definelnwid15.0
#definelmargin65.0
#definelspace5.0
#definermargin35.0
enum{LAY_BORD,LAY_TOPO_0,LAY_BUILD_0,
LAY_TOPO_1,LAY_BUILD_1,
LAY_TOPO_2,LAY_BUILD_2};
enum{BLK_ROAD,BLK_PIVOT};
voidMWhead（void）;
voidMWtopo（void）;
voidMWbuild（void）;
voidMWend（void）;
voidDborder（floatx,floaty）;
voidDglobe（void）;
voidDtopvt（DISTANCEdt,DISTANCEht）;
voidDdthtp（floatdt,floatht,charsw）;
voidDname（floatdt,char*txt）;
voidDvilage（floatdt,floatht,floatvw,floatvh）;
voidDsymbol（floatdt,floatht,intbn）;
floatchord（floatAh,floatx）;
charproj[80];
FILE*fi;
DISTANCEal,ah[3],bh,step;
SCALEsx,sy;
POINTmwbp;
voidmain（void）
clrscr（）;
OpenDwg（"
demo"
MWhead（）;
MWtopo（）;
MWbuild（）;
MWend（）;
CloseDwg（）;
printf（"
\nGoodLucky!
"
getch（）;
voidMWhead（void）
chartxt[80];
fi=fopen（"
mwave.dat"
rt"
while（fscanf（fi,"
%s"
txt））{
if（*txt=='
*'
）
fgets（txt,80,fi）;
break;
strcpy（proj,txt）;
fscanf（fi,"
%lf%lf%lf%lf%lf%lf%lf\n\r"
&
al,&
bh,&
sx,&
sy,&
（ah[1]）,&
（ah[2]）,&
step）;
ah[0]=0;
%s\n\r%lf,%lf,%lf,%lf,%lf,%lf,%lf\n\r"
proj,al,ah[1],ah[2],bh,sx,sy,step）;
sx/=1000;
sy/=1000;
Dborder（0,0）;
Dglobe（）;
voidMWtopo（void）
BOOLsta=FALSE;
DISTANCEdt,ht;
）{
if（sta）break;
else{
if（!
sta）sta=TRUE;
sscanf（txt,"
%lf"
&
dt）;
%lf\n\r"
ht）;
（%8.2lf,%8.2lf）\n\r"
dt,ht）;
Dtopvt（dt,ht）;
voidMWbuild（void）
charsw,txt[80];
DISTANCEdt,ht,vw,vh;
sw=*txt;
%lf%lf"
dt,&
%c（%8.2lf,%8.2lf）"
sw,dt,ht）;
Ddthtp（dt,ht,sw）;
switch（sw）{
case'
V'
:
%s%lf%lf\n\r"
txt,&
vw,&
vh）;
（%8.2lf,%8.2lf）%s\n\r"
vw,vh,txt）;
Dvilage（dt,ht,vw,vh）;
Dname（dt,txt）;
S'
E'
%s\n\r"
txt）;
R'
\n\r"
Dsymbol（dt,ht,BLK_ROAD）;
P'
Dsymbol（dt,ht,BLK_PIVOT）;
defa
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