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objectARX常用代碼2

設置當前的layer和textstyle

// ?Function?name????:?SetCurTextStyle

// ?Description????????:?設置當前TextStyle

// ?Return?type????????:?Acad::ErrorStatus?

// ?Argument?????????:?const?char*?lpStyleName

// ?Argument?????????:?AcDbDatabase*?pDb/*?=?NULL?*/

Acad::ErrorStatus?SetCurTextStyle( const ? char * ?lpStyleName,?AcDbDatabase * ?pDb /* ?=?NULL? */ )

{

????AcDbDatabase * ?pCurDb? = ?pDb;

???? if ?(pCurDb? == ?NULL)

????????pCurDb? = ?acdbHostApplicationServices() -> workingDatabase();

????AcDbTextStyleTableRecordPointer?spRecord(lpStyleName,?pCurDb,?AcDb::kForRead);

????Acad::ErrorStatus?es? = ?spRecord.openStatus();

???? if ?(es? == ?Acad::eOk)

???? {

????????es? = ??pCurDb -> setTextstyle(spRecord -> objectId());

????}

???? return ?es;

}

// ?Function?name????:?SetCurLayer

// ?Description????????:?設置當前層

// ?Return?type????????:?Acad::ErrorStatus?

// ?Argument?????????:?const?char*?lpLayerName

// ?Argument?????????:?AcDbDatabase*?pDb/*?=?NULL?*/

Acad::ErrorStatus?SetCurLayer( const ? char * ?lpLayerName,?AcDbDatabase * ?pDb /* ?=?NULL? */ )

{

????AcDbDatabase * ?pCurDb? = ?pDb;

???? if ?(pCurDb? == ?NULL)

????????pCurDb? = ?acdbHostApplicationServices() -> workingDatabase();

????AcDbLayerTableRecordPointer?spRecord(lpLayerName,?pCurDb,?AcDb::kForRead);

????Acad::ErrorStatus?es? = ?spRecord.openStatus();

???? if ?(es? == ?Acad::eOk)

???? {

????????es? = ??pCurDb -> setClayer(spRecord -> objectId());

????}

???? return ?es;

}

//功能描述:選擇指定圖層上的所有實體！

// ************************************************************************

// 函數名稱:selectEntityInLayer

// 函數類型:Acad::ErrorStatus?

// 返回值:??正常：Acad::eOk

// 功能描述:選擇指定圖層上的所有實體！

// 函數作者:Darcy

// 創建日期:200X-XX-XX

// 參數列表:

// 變量名:nLayerName?????變量類型:const?char*???????????變量說明:(輸入)圖層名

// 變量名:nIDs???????????變量類型:AcDbObjectIdArray&????變量說明:(輸出)圖層中實體的對象標識符集合

// ************************************************************************

Acad::ErrorStatus?selectEntityInLayer( const ? char * ?nLayerName,AcDbObjectIdArray & ?nIDs)

{

????Acad::ErrorStatus?es? = ?Acad::eOk;

????ads_name?ents;

???? struct ?resbuf? * rb;

????rb = acutNewRb(AcDb::kDxfLayerName);

????rb -> restype = 8 ;

????rb -> resval.rstring = ( char * )nLayerName;

????rb -> rbnext = NULL;

????acedSSGet( " X " ,NULL,NULL,rb,ents);

???? long ?entNums = 0 ;

????acedSSLength(ents, & entNums);

???? if ?(entNums? == ? 0 )

????????es? = ?Acad::eInvalidInput;

???? else

???? {

???????? for ?( long ?a? = ? 0 ;?a? < ?entNums?;?a? ++ )

???????? {

????????????AcDbObjectId??objId;

????????????ads_name??????ent;

????????????acedSSName(ents,a,ent);

????????????acdbGetObjectId(objId,?ent);

????????????nIDs.append(objId);

????????}

????}

????acedSSFree(ents);

????acutRelRb(rb);

???? return ?es;

}

另一種實現

//************************************************************************

//函數名稱:selectEntityInLayer

//函數類型:Acad::ErrorStatus?

//返回值:

//功能描述:選擇指定層上的實體，得到其對象屬性標識符！

//函數作者:Darcy

//創建日期:200X-XX-XX

//參數列表:

//變量名:nLayerName??????變量類型:CString???????????????變量說明:

//變量名:nIDs????????????變量類型:AcDbObjectIdArray&????變量說明:

//變量名:nModelSpace?????變量類型:bool??????????????????變量說明:

//************************************************************************

Acad::ErrorStatus????selectEntityInLayer(

?????????????????????????????????????????CString?nLayerName,

?????????????????????????????????????????AcDbObjectIdArray&?nIDs,

?????????????????????????????????????????bool?nModelSpace

?????????????????????????????????????????)

{

????Acad::ErrorStatus?es=Acad::eOk;?

????AcDbBlockTable*????????pBlockTable=NULL;

????AcDbBlockTableRecord*??pSpaceRecord=NULL;

????if?(acdbHostApplicationServices()->workingDatabase()==NULL)

????????return?Acad::eNoDatabase;

????if?((es?=?acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTable,?AcDb::kForRead))==Acad::eOk)

????{

????????char?entryName[13];

????????if?(nModelSpace)

????????????strcpy(entryName,ACDB_MODEL_SPACE);

????????else

????????????strcpy(entryName,ACDB_PAPER_SPACE);

????????//Get?the?Model?or?Paper?Space?record?and?open?it?for?read:??

????????if?((es?=?pBlockTable->getAt((const?char*)entryName,?pSpaceRecord,?AcDb::kForRead))==Acad::eOk)

????????{

????????????????AcDbBlockTableRecordIterator*?pIter;

????????????????if?(pSpaceRecord->newIterator(pIter)==Acad::eOk)

????????????????{

????????????????????for?(pIter->start();!pIter->done();pIter->step())

????????????????????{

????????????????????????char?*name=NULL;

????????????????????????AcDbEntity*?pEntity;

????????????????????????if?(pIter->getEntity(pEntity,AcDb::kForRead)==Acad::eOk)

????????????????????????{

????????????????????????????name=pEntity->layer();

????????????????????????????if?(nLayerName.CompareNoCase(name)==0)

????????????????????????????????nIDs.append(pEntity->objectId());

????????????????????????????pEntity->close();

????????????????????????????acutDelString(name);?

????????????????????????}

????????????????????}

????????????????????delete?pIter;

????????????????}????????????

????????????????pSpaceRecord->close();

????????}???

????????pBlockTable->close();

????}

????return?es;

}

生成新組

//生成新組（sGroupName）

//追加數組中所有實體到該組中

//組名字?,???Id數組

int?createGroup(CString?sGroupName,

???????????????????????????????????const?AcDbObjectIdArray?*idArr)

{

????AcDbGroup???????*pGroup?=?new?AcDbGroup((LPSTR)(LPCTSTR)sGroupName);

????AcDbObjectId?????groupObjectId;

????AcDbDictionary??*pGroupDict?=?NULL;

????acdbHostApplicationServices()->workingDatabase()

????????->getGroupDictionary(pGroupDict,?AcDb::kForWrite);

????pGroupDict->setAt(sGroupName,?pGroup,?groupObjectId);

????pGroupDict->close();

??????pGroup->close();

????acdbOpenObject(pGroup,?groupObjectId,?AcDb::kForWrite);

????for?(int?i?=?0;?i?<?idArr->length();?i++)

????{

????????groupObjectId?=?idArr->at(i);

????????pGroup->append(groupObjectId);???

????}

????pGroup->close();

????return?TRUE;

}

另一個

Acad::ErrorStatus?CDrawFunction::createGroup(CString?groupname,AcDbObjectIdArray?IdArray)

{

Acad::ErrorStatus?es=Acad::eOk;

AcDbDictionary?*pGroupDict=NULL;

AcDbGroup?*pGroup=NULL;

if((es=acdbHostApplicationServices()->workingDatabase()->getGroupDictionary(pGroupDict,AcDb::kForWrite))!=Acad::eOk)

{

return?es;

}

AcDbObjectId?groupId;

es=pGroupDict->getAt(groupname,groupId);

if(es==Acad::eInvalidKey)

{

acutPrintf("\n輸入的詞典名無效!");

pGroupDict->close();

return?es;

}

else?if(es==Acad::eKeyNotFound)

{

pGroup=new?AcDbGroup("GroupDiscription");

if((es=pGroupDict->setAt(groupname,pGroup,groupId))!=Acad::eOk)

{

pGroup->close();pGroupDict->close();return?es;

}

else?if(es==Acad::eOk?)

{

if((es=acdbOpenObject(pGroup,groupId,AcDb::kForWrite))!=Acad::eOk)

{

pGroupDict->close();return?es;

}

for(int?i=0;i?pGroup->append(IdArray[i]);

pGroup->setSelectable(FALSE);

pGroupDict->close();

pGroup->close();

return?es;

}

旋轉整個group

void?CMyDatabase::rotationGroup(CString?strGroupName?,CReiPoint?ptRotation,double?rotationAngle)?

{

????AcGePoint3d?pt;

????AcDbDictionary?*pGroupDict;

????acdbCurDwg()->getGroupDictionary(pGroupDict,AcDb::kForWrite);

????AcDbObjectId?groupId;

????AcDbGroup?*pGroup;

????pt.x=ptRotation.x;

????pt.y=ptRotation.y;

????pt.z=ptRotation.z;

????if(pGroupDict->getAt(strGroupName,groupId)==Acad::eOk)

???????acdbOpenObject(pGroup,groupId,AcDb::kForWrite);

????else

????{

????????pGroupDict->close();

????????return;

????}

????pGroupDict->close();

????AcDbGroupIterator*?pIter=pGroup->newIterator();

????AcDbEntity*?pEnt;

????AcDbObjectId?objId;

????????pIter=pGroup->newIterator();

????for(;!pIter->done();pIter->next())

????{

????????objId=pIter->objectId();

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

????????rotationEntity(pEnt,pt,rotationAngle);

????????pEnt->close();

????}

????delete?pIter;

????pGroup->close();

}

新建一個圖層

//==========================================================

功能：新建一個圖層

參數：LayerName?--?圖層名，LayerColor?--?顏色名

返回：圖層ID

//==========================================================

AcDbObjectId?CreateNewLayer(CString?LayerName,?AcCmColor?LayerColor)

{

????//?獲得當前圖形數據庫的符號表

????AcDbLayerTable?*pLayerTable;

????acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pLayerTable,

????????AcDb::kForWrite);

????//?生成新的圖層表記錄

????AcDbLayerTableRecord?*pLayerTableRecord?=?new?AcDbLayerTableRecord;

????pLayerTableRecord->setName(LayerName);????????//?設置圖層名

????pLayerTableRecord->setColor(LayerColor);????//?設置圖層顏色

????AcDbObjectId?layerId;

????pLayerTable->add(layerId,pLayerTableRecord);

????//?關閉圖層表和圖層表記錄

????pLayerTable->close();

????pLayerTableRecord->close();

????return?layerId;

}

//==========================================================

功能：在指定圖層上新建一條直線

參數：見注釋

返回：直線ID

//==========================================================

AcDbObjectId?CreateLine(?double?x1,double?y1,double?z1,??//?起點坐標

?????????????????????double?x2,double?y2,double?z2,??//?終點坐標

?????????????????????AcDbObjectId?layer)???????????????????//?直線所在圖層

{

????AcGePoint3d?StartPt(x1,y1,z1);????//?起點

????AcGePoint3d?EndPt(x2,y2,z2);????//?終點

????AcDbLine?*pLine?=?new?AcDbLine(StartPt,EndPt);

????//?獲得當前圖形數據庫的符號表

????AcDbBlockTable?*pBlockTable;

????acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pBlockTable,

????????AcDb::kForRead);

????//?獲得符號表中的模型空間塊表記錄指針，用于添加對象

????AcDbBlockTableRecord?*pBlockTableRecord;

????pBlockTable->getAt(ACDB_MODEL_SPACE,pBlockTableRecord,AcDb::kForWrite);

????pBlockTable->close();

????//?將直線添加到模型空間塊表記錄中

????AcDbObjectId?lineId;

????pLine->setLayer(layer,Adesk::kTrue);????//?設置直線所在圖層

????pBlockTableRecord->appendAcDbEntity(lineId,pLine);

????//?關閉塊表記錄指針和直線指針

????pBlockTableRecord->close();

????pLine->close();

????//?返回直線ID號

????return?lineId;

}

不太常用的啊

已知一段弧的起點和終點以及其凸度,求其圓心?

int?getCenter(ads_point?startPoint,ads_point?endPoint,double?bulge,ads_point&?center)

{

if?(bulge==0.0)

{

ads_point_set(startPoint,center);

return?0;

}

ads_point?startPt,endPt;

if?(bulge<0.0)

{

ads_point_set(endPoint,startPt);

ads_point_set(startPoint,endPt);

bulge=bulge*(-1.0);

}

else

{

ads_point_set(startPoint,startPt);

ads_point_set(endPoint,endPt);

}

double?distStartToEnd,distX,distY,radius;

distStartToEnd=ads_distance(startPt,endPt);

distX=distStartToEnd/2.0;

distY=bulge*distX;

radius=((distX*distX)+(distY*distY))/(2.0*distY);

double?tmpAng;

ads_point?tmpPt;

tmpAng=ads_angle(startPt,endPt);

ads_polar(startPt,tmpAng,distX,tmpPt);

ads_polar(tmpPt,(tmpAng+(_PI/2.0)),(radius-distY),center);

return?1;

};?

create hatch的

AcDbObjectId?CreateHatch(

AcDbObjectId?dbOId,

char?cLayer[],?

char?cPattern[]?=?"SOLID",?

int?nColor?=?256,?

double?dAngle?=?0.0,?

double?dScale?=?1.0,?

AcDbDatabase?*?pDbDatab?=?acdbHostApplicationServices()->workingDatabase())

{

AcCmColor?CmC;

AcDbObjectId?DbOId;

AcDbObjectIdArray?DbOIdA(0,?2);

AcDbBlockTable?*?pDbBT;

AcDbBlockTableRecord?*?pDbBTR;

AcGeVector3d?normal(0.0,?0.0,?1.0);

DbOIdA.append(dbOId);

AcDbHatch*?pDbHat?=?new?AcDbHatch();

pDbHat->setDatabaseDefaults();

pDbHat->setAssociative(Adesk::kTrue);?//?BUG:?doesn't?do?squat!?have?to?set?the?reactor?yourself?to?get?associativity!

pDbHat->appendLoop(AcDbHatch::kExternal,?DbOIdA);

pDbHat->setPatternScale(dScale);

pDbHat->setPatternAngle(dAngle);

pDbHat->setPattern(AcDbHatch::kPreDefined,?cPattern);

pDbHat->setNormal(normal);

pDbHat->evaluateHatch();?//?crucial?call?or?nothing?gets?displayed!

pDbDatab->getSymbolTable(pDbBT,?AcDb::kForRead);

pDbBT->getAt(ACDB_MODEL_SPACE,?pDbBTR,?AcDb::kForWrite);

pDbBTR->appendAcDbEntity(DbOId,?pDbHat);

pDbHat->setLayer(cLayer);

CmC.setColorIndex(nColor);

((AcDbEntity?*)pDbHat)->setColor(CmC);

pDbBT->close();

pDbBTR->close();

pDbHat->close();

return?DbOId;

}

前陣困擾我的問題解決了，現在共享給大家：

//************************************************************************

//函數名稱:getPointAtDistInGeCurve

//函數類型:Acad::ErrorStatus?

//返回值:

//功能描述:返回曲線上距起點某距離值處的點。

//函數作者:Darcy

//創建日期:2003-XX-XX

//參數列表:

//變量名:pGeCurve?變量類型:const?AcGeCurve3d?*?變量說明:

//變量名:dist?變量類型:double?變量說明:

//變量名:point?變量類型:AcGePoint3d&?變量說明:

//備?注:

//************************************************************************

Acad::ErrorStatus?getPointAtDistInGeCurve(const?AcGeCurve3d?*?pGeCurve,double?dist,AcGePoint3d&?point)

{

Acad::ErrorStatus?es?=?Acad::eOk;

if?(?pGeCurve?!=?NULL?)

{

AcGePoint3d?spt;

double?pa=0.,datumParam=0.;

//距離從起點起算！

Adesk::Boolean?posParamDir=Adesk::kTrue;

pGeCurve->hasStartPoint(spt);?

datumParam?=?pGeCurve->paramOf(spt);;

pa?=?pGeCurve->paramAtLength(

datumParam,

dist,

posParamDir

);

point=pGeCurve->evalPoint(pa);

}

else

es?=?Acad::eInvalidInput;

return?es;

判斷點是否在圓弧上

/*****************************************************/

BOOL

IsAtArc(CAD_POINT?firstPt,CAD_POINT?secondPt,

double?radius,double?direct,int?More,CAD_POINT?thePt)

/*?判斷某點是否在圓弧上

firstPt?圓弧起點

secondPt?圓弧終點?

radius?半徑

direct?偏向(?>=0__左偏?<0__右偏?)

More?(More<0__小圓弧,More>0__大圓弧)

thePt?判斷點

返回：TRUE__在圓弧上?FALSE__不在圓弧上

{

CAD_POINT?centerPt,sectionPt;

CAD_POINT?startPt,endPt;

double?startAngle,endAngle,chordAngle,vertAngle;

double?intLine,chordLine;

/*?centerPt?圓弧圓心

sectionPt?弦線中心點

startAngle?圓弧起點切線角度（弧度）

endAngle?圓弧終點切線角度（弧度）

chordAngle?弦線角度（弧度）

vertAngle?與弦線垂直的垂線角度（弧度）

intLine?弦線中心至圓心距離

chordLine?弦線長度

*/?

sectionPt.x?=?(firstPt.x?+?secondPt.x)/2;

sectionPt.y?=?(firstPt.y?+?secondPt.y)/2;

chordLine?=?sqrt(?pow(?(secondPt.x-firstPt.x),2?)?+?pow(?(secondPt.y-firstPt.y),2?)?);

intLine?=?sqrt((radius*radius-chordLine*chordLine/4)?);

chordAngle?=?ads_angle(asDblArray(firstPt),asDblArray(secondPt));?//弦線的角度

if(direct>=0)//左偏

{

startPt=firstPt;

endPt=secondPt;

vertAngle=chordAngle+Pai/2;

}

else?if(direct<0)//右偏

{

startPt=secondPt;

endPt=firstPt;

vertAngle=chordAngle-Pai/2;

}

if(More<=0)//小圓弧

{

centerPt.x=sectionPt.x+intLine*cos(vertAngle);

centerPt.y=sectionPt.y+intLine*sin(vertAngle);

}

else//大圓弧

{

centerPt.x=sectionPt.x-intLine*cos(vertAngle);

centerPt.y=sectionPt.y-intLine*sin(vertAngle);

}

if(fabs(centerPt.distanceTo(thePt)-radius)>1.0E-8)

return?FALSE;

startAngle?=?ads_angle(asDblArray(centerPt),asDblArray(startPt));?

endAngle?=?ads_angle(asDblArray(centerPt),asDblArray(endPt));?

AcDbArc?*pArc=new?AcDbArc(centerPt,radius,startAngle,endAngle);

AcDbLine?*pLine=new?AcDbLine(centerPt,thePt);

AcGePoint3dArray?Points;

pLine->intersectWith(pArc,AcDb::kOnBothOperands,Points);

if(Points.isEmpty())?return?FALSE;

return?TRUE;

}

相object加xdata

void?affixXdata(char?*appName,?char?*xData,?AcDbObject?*pObj)

{

????//向AcDbObject添加擴展數據Xdata

????struct?resbuf?*pRb,?*pTemp;

????acdbRegApp(appName);

????pRb?=?acutNewRb(AcDb::kDxfRegAppName);

????pTemp?=?pRb;

????pTemp->resval.rstring?=?new?char[strlen(appName)+1];

????strcpy(pTemp->resval.rstring,?appName);

????pTemp->rbnext?=?acutNewRb(AcDb::kDxfXdAsciiString);

????pTemp?=?pTemp->rbnext;

????pTemp->resval.rstring?=?new?char[strlen(xData)+1];

????strcpy(pTemp->resval.rstring,?xData);

????pObj->setXData(pRb);

????acutRelRb(pRb);

}

//添加擴展數據

//實體添加擴展數據(字符串)

bool?AddXData(CString?appName,?AcDbObjectId?entId,CString?data)

{

//open?entity?for?read

AcDbEntity*pEnt;

Acad::ErrorStatus?es=acdbOpenAcDbEntity(pEnt,entId,AcDb::kForRead);

if(es!=Acad::eOk)

{

ads_printf("error?in?open?entity\n");

return?false;

}

//get?XData?buffer

struct?resbuf*pRb,*pTemp;

pRb=pEnt->xData(appName);

if(pRb!=NULL)//have?XData

{

//pTemp移到表尾

pTemp=pRb;

for(pTemp=pRb;pTemp->rbnext!=NULL;pTemp=pTemp->rbnext){;}

}

else//NOT?have?XData

{

//create?new?xData

ads_regapp(appName);

pRb=ads_newrb(AcDb::kDxfRegAppName);

pRb->resval.rstring=(char*)malloc(appName.GetLength()+1);

strcpy(pRb->resval.rstring,appName);

pTemp=pRb;

}

//fill?xData?string

pTemp->rbnext=ads_newrb(AcDb::kDxfXdAsciiString);

pTemp=pTemp->rbnext;

pTemp->resval.rstring=(char*)malloc(data.GetLength()+1);

strcpy(pTemp->resval.rstring,data);

//add?xData

es=pEnt->upgradeOpen();

if(es!=Acad::eOk)

{

ads_printf("\nError?occur?in?updateOpen.");

pEnt->close();

ads_relrb(pRb);

return?false;

}

es=pEnt->setXData(pRb);

if(es!=Acad::eOk)

{

ads_printf("\nError?occur?in?setXData.");

pEnt->close();

ads_relrb(pRb);

return?false;

}

pEnt->close();

ads_relrb(pRb);

return?true;

}

posted on 2006-06-26 16:35 夢在天涯閱讀(3859) 評論(0) 編輯收藏引用所屬分類: ARX/DBX

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