C++ (Cpp) CSG_Shapes::Fmt_Nameの例

コード例 #1

ファイル: line_dissolve.cpp プロジェクト: johanvdw/SAGA-GIS-git-mirror

//---------------------------------------------------------
bool CLine_Dissolve::On_Execute(void)
{
	CSG_Shapes	*pLines	= Parameters("LINES")->asShapes();

	if(	!pLines->is_Valid() || pLines->Get_Count() < 2 )
	{
		Error_Set(_TL("invalid or empty lines layer"));

		return( false );
	}

	//-----------------------------------------------------
	CSG_Shapes	*pDissolved	= Parameters("DISSOLVED")->asShapes();

	pDissolved->Create(SHAPE_TYPE_Line);

	CSG_Parameter_Table_Fields	&Fields	= *Parameters("FIELDS")->asTableFields();

	CSG_Table	Dissolve;

	//-----------------------------------------------------
	if( Fields.Get_Count() == 0 )
	{
		pDissolved->Fmt_Name("%s [%s]", pLines->Get_Name(), _TL("Dissolved"));
	}
	else
	{
		Dissolve.Add_Field("INDEX", SG_DATATYPE_Int   );
		Dissolve.Add_Field("VALUE", SG_DATATYPE_String);

		Dissolve.Set_Record_Count(pLines->Get_Count());

		for(int i=0; i<pLines->Get_Count() && Set_Progress(i, pLines->Get_Count()); i++)
		{
			CSG_Shape	*pLine	= pLines->Get_Shape(i);

			CSG_String	Value;

			for(int iField=0; iField<Fields.Get_Count(); iField++)
			{
				Value	+= pLine->asString(Fields.Get_Index(iField));
			}

			Dissolve[i].Set_Value(0, i);
			Dissolve[i].Set_Value(1, Value);
		}

		Dissolve.Set_Index(1, TABLE_INDEX_Ascending);

		//-------------------------------------------------
		CSG_String	Name;

		for(int iField=0; iField<Fields.Get_Count(); iField++)
		{
			if( iField > 0 )
			{
				Name	+= "; ";
			}

			Name	+= pLines->Get_Field_Name(Fields.Get_Index(iField));

			pDissolved->Add_Field(
				pLines->Get_Field_Name(Fields.Get_Index(iField)),
				pLines->Get_Field_Type(Fields.Get_Index(iField))
			);
		}

		pDissolved->Fmt_Name("%s [%s: %s]", pLines->Get_Name(), _TL("Dissolved"), Name.c_str());
	}

	//-----------------------------------------------------
	Statistics_Initialize(pDissolved, pLines);

	//-----------------------------------------------------
	CSG_String	Value;	CSG_Shape	*pDissolve	= NULL;

	for(int i=0; i<pLines->Get_Count() && Set_Progress(i, pLines->Get_Count()); i++)
	{
		CSG_Shape	*pLine	= pLines->Get_Shape(!Dissolve.Get_Count() ? i : Dissolve[i].asInt(0));

		if( !pDissolve || (Dissolve.Get_Count() && Value.Cmp(Dissolve[i].asString(1))) )
		{
			if( Dissolve.Get_Count() )
			{
				Value	= Dissolve[i].asString(1);
			}

			pDissolve	= pDissolved->Add_Shape(pLine, SHAPE_COPY_GEOM);

			for(int iField=0; iField<Fields.Get_Count(); iField++)
			{
				*pDissolve->Get_Value(iField)	= *pLine->Get_Value(Fields.Get_Index(iField));
			}

			Statistics_Add(pDissolve, pLine, true);
		}
		else
		{
			Add_Line(pDissolve, pLine);

			Statistics_Add(pDissolve, pLine, false);
		}
	}

	//-----------------------------------------------------
	return( pDissolved->is_Valid() );
}