【转帖】学习arx,编个初组的命令,呵呵
 

学习arx,编个初组的命令,呵呵
三点画弧arx源代码:
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59acdbblocktablerecord *getmodelspace(acdb::openmode mode){
acdbdatabase *pdwg = acdbhostapplicationservices()->workingdatabase();
acdbblocktable *pblocktable;
acdbblocktablerecord *pmodelspace;
pdwg->getsymboltable(pblocktable, acdb::kforread);
pblocktable->getat(acdb_model_space, pmodelspace, mode);
pblocktable->close();
return pmodelspace;
}
//功能:三点画弧
//编程:包达勇
//时间:
我也发发,最简单的jig
class crectjig :public acedjig
{
public:
crectjig()
{
pline = 0;
ncolor = 1;
}
~crectjig()
{
if (pline)
{
delete pline;
pline = 0;
}
}
void setcolor(int color){ncolor = color;}
bool doit()
{
if(!pline)
pline = new acdbpolyline;

ads_point pt1;

if(ads_getpoint(null,str,pt1)!=rtnorm)
{
return false;
}
pts = transucs2wcs(aspnt3d(pt1),false);
pte = acgepoint3d(pts.x+1,pts.y+1,0);
pline->addvertexat(0,acgepoint2d(pts.x,pts.y));
pline->addvertexat(1,acgepoint2d(pts.x,pte.y));
pline->addvertexat(2,acgepoint2d(pte.x,pte.y));
pline->addvertexat(3,acgepoint2d(pte.x,pts.y));
pline->setclosed(adesk::ktrue);
pline->setcolorindex(ncolor);
setdispprompt("一些描述");
acedjig::dragstatus stat = drag();
if (stat != acedjig::knormal)
return false;
return true;
}
dragstatus sampler()
{
dragstatus stat;
setuserinputcontrols((userinputcontrols)
(acedjig::kaccept3dcoordinates
| acedjig::knonegativeresponseaccepted
| acedjig::knozeroresponseaccepted));
acgepoint3d pt;
stat = acquirepoint(pt);
if (!pt.isequalto(pte))
pte = pt;
else if (stat == acedjig::knormal)
return acedjig::knochange;
return stat;
}
adesk::boolean update()
{
pline->setpointat(0,acgepoint2d(pts.x,pts.y));
pline->setpointat(1,acgepoint2d(pts.x,pte.y));
pline->setpointat(2,acgepoint2d(pte.x,pte.y));
pline->setpointat(3,acgepoint2d(pte.x,pts.y));
return adesk::ktrue;
}
acdbentity* entity() const
{
return pline;
}
public:
acdbpolyline * pline;
acgepoint3d pts,pte;
int ncolor;
};
transucs2wcs()是一个函数转换点的,ucs到世界坐标的