关于自定义实体

why1025

各位大师，我看了帮助文档里面的例子，这个实在搞不懂，这里的addDimData，setDimValue干啥用的，有啥效果，哪位大师帮看下

extern int gCircleDynDimSetting;
AcCircleJig::AcCircleJig(AcDbDatabase *pDb,
             AcCircle *pCircle):
mpCircle(pCircle),
mpdb(pDb)
{
mElevation = 0.0;
mNormal.set(0,0,1);
mpDimDataArray = new AcDbDimDataPtrArray;
mpDimDataArray->setLogicalLength(0);
}
AcCircleJig::~AcCircleJig()
{
if (mpDimDataArray)
{
  for (int i = 0; i < mpDimDataArray->length(); i++)
  {
   AcDbDimData *pData = (*mpDimDataArray)[i];
   delete pData;
  }
  delete mpDimDataArray;
}
}
Acad::ErrorStatus
AcCircleJig::setPlane()
{
// Acquire current UCS transformation matrix.
// We save the matrix for later use.
//
acdbUcsMatrix(mUcsToWcsMat);
mWcsToUcsMat = mUcsToWcsMat.inverse();
// Get data from user coordinate system.
//
AcGePoint3d orgPt;
AcGeVector3d xAxis, yAxis, zAxis;
mUcsToWcsMat.getCoordSystem(orgPt, xAxis, yAxis, zAxis);
// Get the current elevation w.r.t current UCS, w.r.t the current space.
//
struct resbuf rb;
ads_getvar(/*MSG0*/"CVPORT", &rb);
double elev;
if (rb.resval.rint == 1)
  elev = mpdb->pelevation();  // Paper space
else
  elev = mpdb->elevation();   // Model space
// Convert elevation from UCS to WCS.
//
orgPt += elev * zAxis;
mElevation = zAxis.dotProduct(orgPt.asVector());
mNormal = zAxis;
mHorizDir = xAxis;
return Acad::eOk;
}
//Purpose: This is the fist function that that command is
//         expected to call. This would call the other drag()
//     method classes.
void   
AcCircleJig::dragIt(void)
{
AcEdJig::DragStatus stat;
const TCHAR* pszPrompt = _T("Enter the center for the Circle");
setDispPrompt(pszPrompt);
stat =acquireDefPt();
setCircleProperties();
do
{
  const TCHAR*pszPrompt2 = _T("Enter the Radius point for the circle");
  setDispPrompt(pszPrompt2);
  addDimData();
  stat = drag();
} while (stat != AcEdJig::kNormal && stat != AcEdJig::kCancel &&
  stat != AcEdJig::kNull);

if (stat == AcEdJig::kNormal)
  append();
}
AcEdJig::DragStatus
AcCircleJig::acquireDefPt()
{
DragStatus stat;
setUserInputControls( (UserInputControls)
  (AcEdJig::kAccept3dCoordinates |
  AcEdJig::kNoNegativeResponseAccepted)
  );
AcGePoint3d pt;
stat =acquirePoint(pt);
if(mCenterPt != pt)
  mCenterPt=pt;
if(stat == AcEdJig::kNormal )
  return AcEdJig::kNoChange;
else
  return stat;
}
AcEdJig::DragStatus   
AcCircleJig::sampler(void)
{
DragStatus stat;
setUserInputControls((UserInputControls)
  (AcEdJig::kAccept3dCoordinates
  | AcEdJig::kGovernedByOrthoMode
  | AcEdJig::kAcceptOtherInputString  
  | AcEdJig::kNoNegativeResponseAccepted
  | AcEdJig::kNullResponseAccepted
  | AcEdJig::kNoZeroResponseAccepted));

AcGePoint3d pnt;
stat = acquirePoint(pnt);
if (stat == kNormal) {
  if (pnt == mRadVec){
   return AcEdJig::kNoChange;
  }
  else{
   mRadVec = pnt;
  }
}
return stat;
}

Adesk::Boolean
AcCircleJig::update()
{
AcGeVector3d radVec = mRadVec - mCenterPt;
double radius = radVec.length();
mpCircle->setRadius(radius);
//update the Dynamic Dimension
updateDimension();
return Adesk::kTrue;
}
void      
AcCircleJig::setCircleProperties()
{
mpCircle->setDatabaseDefaults();
mpCircle->setCenter(mCenterPt);
mpCircle->setNormal(mNormal);
}
bool      
AcCircleJig::updateDimension()
{
if (!mpCircle || !mpDimDataArray ||
  (mpDimDataArray->length() <= 0))
  return false;
double radius = mpCircle->radius();
AcGePoint3d cenPt = mpCircle->Center();
AcGeVector3d radVec = mRadVec - cenPt;
if (!radVec.isZeroLength())
{
  radVec.normalize();
  radVec = radius * radVec;
}
AcGePoint3d chordPt = cenPt + radVec;
AcGePoint3d farChordPt = cenPt - radVec;
for (int i = 0; i < mpDimDataArray->length(); i++)
{
  AcDbDimData *pData = (*mpDimDataArray)[i];
  int iAppData = *( static_cast<int *>(pData->appData()) );
  AcDbDimension *pDim = (AcDbDimension*)pData->dimension();
  AcDbAlignedDimension *pAlnDim = AcDbAlignedDimension::cast(pDim);
  if (pAlnDim == NULL)
   continue;
  pAlnDim->setXLine1Point(cenPt);
  pAlnDim->setXLine2Point(chordPt);
  pAlnDim->setDimLinePoint(chordPt);
}
return true;
}
AcDbDimDataPtrArray*
AcCircleJig::dimData(const double dimScale)
{
return mpDimDataArray;
}
Acad::ErrorStatus
AcCircleJig::setDimValue(const AcDbDimData *pdimData,
             const double dimValue)
{
mpCircle->setRadius(dimValue);
return Acad::eOk;
}
bool
AcCircleJig::addDimData()
{
if (mpCircle == NULL)
  return false;
if (mpDimDataArray == NULL) {
  mpDimDataArray = new AcDbDimDataPtrArray();
} else {
  for (int i = 0; i < mpDimDataArray->length(); i++) {
   AcDbDimData *pData = (*mpDimDataArray)[i];
   delete pData;
  }
  mpDimDataArray->setLogicalLength(0);
}
double radius = mpCircle->radius();
AcGePoint3d cenPt = mpCircle->Center();
AcGeVector3d normal = mpCircle->normal();
AcGeVector3d vertDir = normal.crossProduct(mHorizDir);
AcDbAlignedDimension *pAlnDim1 = new AcDbAlignedDimension();
pAlnDim1->setDatabaseDefaults();
pAlnDim1->setNormal(normal);
pAlnDim1->setElevation(mElevation);
pAlnDim1->setDimsah(true);
pAlnDim1->setDimse1(true);
pAlnDim1->setDimblk1(_T("None"));
pAlnDim1->setXLine1Point(mCenterPt);
pAlnDim1->setXLine2Point(mRadVec);
pAlnDim1->setDimLinePoint(mRadVec);
AcDbDimData *dimData1 = new AcDbDimData(pAlnDim1);
int DimIndex(1);
dimData1->setAppData(&DimIndex);
// check what the setting is for this dimension
// this is configured using the SETDYNDIMMODES command
getDynDimSettings(dimData1, (AcDbDimData::DimDataFlags)gCircleDynDimSetting);
mpDimDataArray->append(dimData1);
return true;
}

why1025

没人了啊11111111，谁知道
virtual AcDbDimDataPtrArray* dimData(const double dimScale);
bool       updateDimension();
DragStatus      acquireDefPt();
virtual Acad::ErrorStatus setDimValue(const AcDbDimData *pdimData,
            const double dimValue);
bool      addDimData();
这些最终做出的效果是什么，如何添加这些

why1025

其实我的问题是这样的，我现在自定义一个实体后，可以实现动态创建，但是现在问题是如果创建了尺寸，用acedjig有问题，不知各位大师怎么处理尺寸的动态创建拖动的

ObjectARX

你这不是自定义实体，是动态拖动，自己动手在CAD里面画标注， 看到拉动边线了吗，这个就是程序做这个的。多看下例子目录里面的代码。

why1025

是动态拖动，但现在问题是拖动的实体是尺寸，好像不能动态拖动尺寸。比如一个矩形，我标注边长以后，可以拖动这个矩形，但是尺寸不能拖，不知这个问题有什么解决方法没，我现在想知道我这个例子里的关于尺寸的那几个函数是不是处理这个问题的

ObjectARX

why1025 发表于 2017-9-9 18:52

是做DIM拖动的，你要修改代码，去设置xlinepont1,xlinepont2那些值。

why1025

youyouyou有没有例子啊，想看看，而且这个是拖动一堆实体，不是一个

why1025

大神们都干啥去了