[ARX]arx计算选取的直线总长度

who_is

本人用arx编写了一个计算所选取直线总长度的程序，感觉挺不方便，大家给点意见。 void GetSelLens()
{
ads_name ent1,ssents;
long i(0),n;
char* entname;
struct resbuf *rb,*rbtmp;
double fLength(0);
AcGePoint3d *pt1,*pt2; acedSSGet(NULL,NULL,NULL,NULL,ssents);
acedSSLength(ssents,&n);
for (;i<n;i++)
{
acedSSName(ssents,i,ent1);
rb=acdbEntGet(ent1);
for (rbtmp=rb;rbtmp!=NULL;rbtmp=rbtmp->rbnext)
{
if (rbtmp->restype==0)
{
entname=rbtmp->resval.rstring;
continue;
}
if (rbtmp->restype==10)
pt1=new AcGePoint3d(rbtmp->resval.rpoint[X],rbtmp->resval.rpoint[Y],
rbtmp->resval.rpoint[Z]);
if (rbtmp->restype==11)
pt2=new AcGePoint3d(rbtmp->resval.rpoint[X],rbtmp->resval.rpoint[Y],
rbtmp->resval.rpoint[Z]);
}
if (!strcmp(entname,"LINE"))
{
fLength+=GetLineLen(pt1,pt2);
}
} acutPrintf("总长度 %f",fLength);
// return 0;
} double GetLineLen(AcGePoint3d *pt1,AcGePoint3d *pt2)
{
double len=sqrt(pow(pt1->x-pt2->x,2)+pow(pt1->y-pt2->y,2)+pow(pt1->z-pt2->z,2));
return len;
} 有人用vlisp编写了计算弧线和直线总长的程序，很简单。 (defun C:calEN (/ CURVE TLEN SS N SUMLEN)
(vl-load-com)
(setq SUMLEN 0)
(setq SS (ssget '((0 . "CIRCLE,ELLIPSE,LINE,*POLYLINE,SPLINE,ARC"))))
(setq N 0)
(repeat (sslength SS)
(setq CURVE (vlax-ename->vla-object (ssname SS N)))
(setq TLEN (vlax-curve-getdistatparam
CURVE
(vlax-curve-getendparam CURVE)
)
)
(setq SUMLEN (+ SUMLEN TLEN))
(setq N (1+ N))
)
(print (strcat "总长度: " (rtos SUMLEN 2 5)))
(princ)
)