Rotate3d with ObjectARX

admin1

[code]int testfunc()

{

  // make sure that geom3d.arx is loaded

  acedArxLoad(_T("geom3d.arx"));

  ads_name pieces;

  ads_point Point1, Point2;

  Point1[X] =  1.0;

  Point1[Y] =  1.0;

  Point1[Z] =  0.0;

  Point1[X] = 10.0;

  Point1[Y] = 10.0;

  Point1[Z] = 10.0;

  ads_real  Angle = 32;



  //Select the entities you want to rotate

  acedSSGet( NULL,NULL, NULL, NULL, pieces );



  resbuf* pBuf = acutBuildList(RTSTR,_T("c:rotate3d"),

    RTPICKS, pieces, RTSTR, _T(""), RT3DPOINT, Point1,

    RT3DPOINT, Point2, RTREAL, Angle, RTNONE);



  resbuf* result=NULL;

  acedInvoke(pBuf,&result);

  acutRelRb(pBuf);

  if (result!=NULL)

    acutRelRb(result);



  return RTNORM;

}

Method #2

With ObjectARX, it is recommended that AcDbEntity::transformBy() is used instead of invoking ROTATE3D. For example, for each entity (ename) with AcGePoint3d start (start) and end (end) points for the axis, and the rotation angle (angle), you can perform the following:

  double pi =  3.14159265359;

  AcDbObjectId objId;

  acdbGetObjectId(objId, ename);

  AcDbEntity* pEnt = NULL;

  acdbOpenAcDbEntity(pEnt, objId, AcDb::kForWrite);

  AcGeMatrix3d mat;

  mat.setToRotation(angle * pi / 180, end - start, start);

  pEnt->transformBy(mat);

  pEnt->close();[/code]