objectARX说明函数

ARX函数

选择指定图层上的所有实体

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(\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; }

设置当前层

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; } 生成新组

//生成新组(sGroupName) //追加数组中所有实体到该组中 //组名字 , Id数组

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; }

建立文本格式表函数

AcDbObjectId CreateNewTextStyle() {

AcDbTextStyleTable *pTextStyleTable;

AcDbTextStyleTableRecord *pTextStyleTableRcd AcDbObjectId textId;

acdbHostApplicationServices()->workingDatabase()->getSymbolTable (pTextStyleTable,AcDb::kForWrite); if (!pTextStyleTable->has(StyleName) {

AcDbTextStyleTableRecord *pTSTblRcd= new AcDbTextStyleTableRecord; pTSTblRcd->setName(StyleName); pTSTblRcd->setFileName(fontName);

pTSTblRcd->setBigFontFileName(bigfontName); pTSTblRcd->setTextSize(textSize); pTSTblRcd->setXScale(xScale);

pTSTblRcd->setObliquingAngle(obliqueAngle); pTSTblRcd->setPriorSize(trPercent);

pTextStyleTable->add(textId,pTextStyleTableRcd); pTSTblRcd->close(); }

pTextStyleTable->close(); return textId; }

区域在区域内

// Function name : RgnInRgn // Descrīption : is Region1 in Region2? // Return type : bool

// Argument : const AcDbRegion* pRegion1 // Argument : const AcDbRegion* pRegion2

bool RgnInRgn(const AcDbRegion* pRegion1,const AcDbRegion* pRegion2) {

if (pRegion1==NULL||pRegion2==NULL) return false; AcDbObjectPointer< AcDbRegion > spRegion1; AcDbObjectPointer< AcDbRegion > spRegion2; if (spRegion1.create()!=Acad::eOk)

{

acdbFail(\内存不足\return false; }

if (spRegion2.create()!=Acad::eOk) {

acdbFail(\内存不足\return false; }

if ((spRegion1->copyFrom(pRegion1)!= Acad::eOk)|| (spRegion2->copyFrom(pRegion2)!= Acad::eOk)) {

acdbFail(\无法复制对象\return false; }

bool bResult=false;

if(spRegion1->booleanOper(AcDb::kBoolIntersect, spRegion2.object()) == Acad::eOk) {

if ((spRegion2->isNull()==Adesk::kTrue)&&(spRegion1->isNull()!=Adesk::kTrue)){ double area1,area0; spRegion1->getArea(area1); pRegion1->getArea(area0);

if ((area0 - area1) < AcGeContext::gTol.equalPoint()) bResult=true; } }

return bResult; } 组旋转

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()) {

ōbjId=pIter->objectId();

acdbOpenAcDbEntity(pEnt,objId,AcDb::kForWrite); rotationEntity(pEnt,pt,rotationAngle); pEnt->close(); }

delete pIter; pGroup->close(); }

点在区域内

功能：判断点 pt 是否在区域 ptArr 内

实现：根据射线法求交点个数，偶数－区域外，奇数－区域内 变量：pt 指定点 ptArr 判断区域 返回：在区域 TRUE 不在 FALSE

code: BOOL BaseHandle::PointIsInPolygon(AcGePoint3d pt, AcGePoint3dArray ptArr) {