objectARX 多线段 AcDbPolyline

AcDbPolyline 创建的是一个曲线，一个实体。

	static void MyGroupMyCommand6() {
		// Put your command code here
		acutPrintf(TEXT("\nHello world! make padding"));
		// 只读方式打开处于活动状态的图形数据库块表
		AcDbBlockTable *pTable;
		acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pTable, AcDb::kForRead);
		// 只写方式打开模型空间所在块表记录
		AcDbBlockTableRecord *pRecord;
		pTable->getAt(ACDB_MODEL_SPACE, pRecord, AcDb::kForWrite);
 
		AcGePoint3dArray points;
		points.append(AcGePoint3d(1000, 100, 0));
		points.append(AcGePoint3d(100, 1000, 0));
		points.append(AcGePoint3d(500, 500, 0));
		points.append(AcGePoint3d(1000, 100, 0));
		AcGePoint2dArray pt2ds;
		for (int i = 0; i < points.length(); i++)
			pt2ds.append(points[i].convert2d(AcGePlane::kXYPlane));
		//创建多段线
		AcDbPolyline* pPoly = new AcDbPolyline();
		for (int i = 0; i < pt2ds.length(); ++i)
			pPoly->addVertexAt(i, pt2ds[i]);
		pRecord->appendAcDbEntity(pPoly);
 
		pPoly->close();
		pRecord->close();
		pTable->close();
	}