C++ (Cpp) SG_Color_Get_Random Examples

Example #1

//---------------------------------------------------------
void CGrid_Cluster_Analysis::Save_LUT(CSG_Grid *pCluster)
{
	CSG_Parameter	*pLUT	= DataObject_Get_Parameter(pCluster, "LUT");

	if( pLUT && pLUT->asTable() )
	{
		CSG_Parameter_Grid_List	*pGrids	= Parameters("GRIDS")->asGridList();

		CSG_Table	&Statistics	= *Parameters("STATISTICS")->asTable();

		bool	bRGB	= pGrids->Get_Count() >= 3 && Parameters("RGB_COLORS")->asBool();

		for(int iCluster=0; iCluster<Statistics.Get_Count(); iCluster++)
		{
			CSG_Table_Record	*pClass	= pLUT->asTable()->Get_Record(iCluster);

			if( !pClass )
			{
				(pClass	= pLUT->asTable()->Add_Record())->Set_Value(0, SG_Color_Get_Random());
			}

			pClass->Set_Value(1, CSG_String::Format("%s %d", _TL("Cluster"), iCluster + 1));
			pClass->Set_Value(2, "");
			pClass->Set_Value(3, iCluster + 1);
			pClass->Set_Value(4, iCluster + 1);

			if( bRGB )
			{
				#define SET_COLOR_COMPONENT(c, i)	c = (int)(127 + (Statistics[iCluster].asDouble(3 + i) - pGrids->asGrid(i)->Get_Mean()) * 127 / pGrids->asGrid(i)->Get_StdDev()); if( c < 0 ) c = 0; else if( c > 255 ) c = 255;

				int	r; SET_COLOR_COMPONENT(r, 2);
				int	g; SET_COLOR_COMPONENT(g, 1);
				int	b; SET_COLOR_COMPONENT(b, 0);

				pClass->Set_Value(0, SG_GET_RGB(r, g, b));
			}
		}

		pLUT->asTable()->Set_Record_Count(Statistics.Get_Count());

		DataObject_Set_Parameter(pCluster, pLUT);
		DataObject_Set_Parameter(pCluster, "COLORS_TYPE", 1);	// Color Classification Type: Lookup Table
	}
}

Example #2

File: classify_supervised.cpp Project: Fooway/SAGA-GIS-git-mirror

//---------------------------------------------------------
bool CGrid_Classify_Supervised::Set_Classification(CSG_Classifier_Supervised &Classifier)
{
	//-----------------------------------------------------
	CSG_Grid	*pClasses	= Parameters("CLASSES")->asGrid();

	//-----------------------------------------------------
	CSG_Parameter	*pLUT	= DataObject_Get_Parameter(pClasses, "LUT");

	if( pLUT && pLUT->asTable() )
	{
		CSG_Parameter_Grid_List	*pGrids	= Parameters("GRIDS")->asGridList();

		bool	bRGB	= pGrids->Get_Count() >= 3 && Parameters("RGB_COLORS")->asBool();

		for(int iClass=0; iClass<Classifier.Get_Class_Count(); iClass++)
		{
			CSG_Table_Record	*pClass	= pLUT->asTable()->Get_Record(iClass);

			if( !pClass )
			{
				(pClass	= pLUT->asTable()->Add_Record())->Set_Value(0, SG_Color_Get_Random());
			}

			pClass->Set_Value(1, Classifier.Get_Class_ID(iClass).c_str());
			pClass->Set_Value(2, "");
			pClass->Set_Value(3, iClass + 1);
			pClass->Set_Value(4, iClass + 1);

			if( bRGB )
			{
				#define SET_COLOR_COMPONENT(c, i)	c = (int)(127 + (Classifier.Get_Class_Mean(iClass, i) - pGrids->asGrid(i)->Get_Mean()) * 127 / pGrids->asGrid(i)->Get_StdDev()); if( c < 0 ) c = 0; else if( c > 255 ) c = 255;

				int	r; SET_COLOR_COMPONENT(r, 2);
				int	g; SET_COLOR_COMPONENT(g, 1);
				int	b; SET_COLOR_COMPONENT(b, 0);

				pClass->Set_Value(0, SG_GET_RGB(r, g, b));
			}
		}

		pLUT->asTable()->Set_Record_Count(Classifier.Get_Class_Count());

		DataObject_Set_Parameter(pClasses, pLUT);
		DataObject_Set_Parameter(pClasses, "COLORS_TYPE", 1);	// Color Classification Type: Lookup Table
	}

	pClasses->Set_Name(CSG_String::Format("%s [%s]", _TL("Classification"), CSG_Classifier_Supervised::Get_Name_of_Method(Parameters("METHOD")->asInt()).c_str()));

	//-----------------------------------------------------
	CSG_Grid	*pQuality	= Parameters("QUALITY")->asGrid();

	if( pQuality )
	{
		DataObject_Set_Colors(pQuality, 11, SG_COLORS_YELLOW_GREEN);

		pQuality->Set_Name(CSG_String::Format("%s [%s]", _TL("Classification Quality"), CSG_Classifier_Supervised::Get_Name_of_Quality(Parameters("METHOD")->asInt()).c_str()));
	}

	//-----------------------------------------------------
	return( true );
}