用顶点表创建REGION

// 参数AcGePoint3dArray

// 用顶点表创建REGION.

AcDbObjectId CreateRegionFromPoints(AcGePoint3dArray InPoints)

{

// 创建polyline.

AcDbObjectId polylineID = NULL;

polylineID = createPolyline(InPoints);

 

// 打开POLYLINE.

AcDbEntity* pPolyline;

AcDbObjectId regionId;

acdbOpenAcDbEntity(pPolyline, polylineID, AcDb::kForRead);

 

// 用polyline 创建REGION

AcDbVoidPtrArray polylineArray;

polylineArray.append(static_cast(pPolyline));

AcDbVoidPtrArray regions;

AcDbRegion::createFromCurves(polylineArray, regions);

AcDbRegion *pRegion = NULL;

pRegion = AcDbRegion::cast((AcRxObject*)regions[0]);

pPolyline->close();

// 添加REGION到数据库

AcDbBlockTable* pBlockTable;

acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTable, AcDb::kForRead);

 

AcDbBlockTableRecord* pBlockTableRecord;

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

pBlockTable->close();

 

 AcDbRegion* regionObj = static_cast(regions[0]);

pBlockTableRecord->appendAcDbEntity(regionId, regionObj);

 

pBlockTableRecord->close();

regionObj->close();

 

// 返回REGION的ID.

return regionId;

}