C++ FRichCurve::SetKeyInterpMode方法代码示例

TArray<FString> UCurveBase::CreateCurveFromCSVString(const FString& InString)
{
	// Array used to store problems about curve import
	TArray<FString> OutProblems;

	TArray<FRichCurveEditInfo> Curves = GetCurves();
	const int32 NumCurves = Curves.Num();

	const FCsvParser Parser(InString);
	const FCsvParser::FRows& Rows = Parser.GetRows();

	if(Rows.Num() == 0)
	{
		OutProblems.Add(FString(TEXT("No data.")));
		return OutProblems;
	}

	// First clear out old data.
	ResetCurve();

	// Each row represents a point
	for(int32 RowIdx=0; RowIdx<Rows.Num(); RowIdx++)
	{
		const TArray<const TCHAR*>& Cells = Rows[RowIdx];
		const int32 NumCells = Cells.Num();

		// Need at least two cell, Time and one Value
		if(NumCells < 2)
		{
			OutProblems.Add(FString::Printf(TEXT("Row '%d' has less than 2 cells."), RowIdx));
			continue;
		}

		float Time = FCString::Atof(Cells[0]);
		for(int32 CellIdx=1; CellIdx<NumCells && CellIdx<(NumCurves+1); CellIdx++)
		{
			FRichCurve* Curve = Curves[CellIdx-1].CurveToEdit;
			if(Curve != NULL)
			{
				FKeyHandle KeyHandle = Curve->AddKey(Time, FCString::Atof(Cells[CellIdx]));
				Curve->SetKeyInterpMode(KeyHandle, RCIM_Linear);
			}
		}

		// If we get more cells than curves (+1 for time cell)
		if(NumCells > (NumCurves + 1))
		{
			OutProblems.Add(FString::Printf(TEXT("Row '%d' has too many cells for the curve(s)."), RowIdx));
		}
		// If we got too few cells
		else if(NumCells < (NumCurves + 1))
		{
			OutProblems.Add(FString::Printf(TEXT("Row '%d' has too few cells for the curve(s)."), RowIdx));
		}
	}

	Modify(true);

	return OutProblems;
}

TArray<FString> UCurveTable::CreateTableFromJSONString(const FString& InString, ERichCurveInterpMode InterpMode)
{
	// Array used to store problems about table creation
	TArray<FString> OutProblems;

	if (InString.IsEmpty())
	{
		OutProblems.Add(TEXT("Input data is empty."));
		return OutProblems;
	}

	TArray< TSharedPtr<FJsonValue> > ParsedTableRows;
	{
		const TSharedRef< TJsonReader<TCHAR> > JsonReader = TJsonReaderFactory<TCHAR>::Create(InString);
		if (!FJsonSerializer::Deserialize(JsonReader, ParsedTableRows) || ParsedTableRows.Num() == 0)
		{
			OutProblems.Add(FString::Printf(TEXT("Failed to parse the JSON data. Error: %s"), *JsonReader->GetErrorMessage()));
			return OutProblems;
		}
	}

	// Empty existing data
	EmptyTable();

	// Iterate over rows
	for (int32 RowIdx = 0; RowIdx < ParsedTableRows.Num(); ++RowIdx)
	{
		const TSharedPtr<FJsonValue>& ParsedTableRowValue = ParsedTableRows[RowIdx];
		TSharedPtr<FJsonObject> ParsedTableRowObject = ParsedTableRowValue->AsObject();
		if (!ParsedTableRowObject.IsValid())
		{
			OutProblems.Add(FString::Printf(TEXT("Row '%d' is not a valid JSON object."), RowIdx));
			continue;
		}

		// Get row name
		static const FString RowNameJsonKey = TEXT("Name");
		const FName RowName = MakeValidName(ParsedTableRowObject->GetStringField(RowNameJsonKey));

		// Check its not 'none'
		if (RowName == NAME_None)
		{
			OutProblems.Add(FString::Printf(TEXT("Row '%d' missing a name."), RowIdx));
			continue;
		}

		// Check its not a duplicate
		if (RowMap.Find(RowName) != NULL)
		{
			OutProblems.Add(FString::Printf(TEXT("Duplicate row name '%s'."), *RowName.ToString()));
			continue;
		}

		// Add a key for each entry in this row
		FRichCurve* NewCurve = new FRichCurve();
		for (const auto& ParsedTableRowEntry : ParsedTableRowObject->Values)
		{
			// Skip the name entry
			if (ParsedTableRowEntry.Key == RowNameJsonKey)
			{
				continue;
			}

			// Make sure we have a valid float key
			float EntryKey = 0.0f;
			if (!LexicalConversion::TryParseString(EntryKey, *ParsedTableRowEntry.Key))
			{
				OutProblems.Add(FString::Printf(TEXT("Key '%s' on row '%s' is not a float and cannot be parsed."), *ParsedTableRowEntry.Key, *RowName.ToString()));
				continue;
			}

			// Make sure we have a valid float value
			double EntryValue = 0.0;
			if (!ParsedTableRowEntry.Value->TryGetNumber(EntryValue))
			{
				OutProblems.Add(FString::Printf(TEXT("Entry '%s' on row '%s' is not a float and cannot be parsed."), *ParsedTableRowEntry.Key, *RowName.ToString()));
				continue;
			}

			FKeyHandle KeyHandle = NewCurve->AddKey(EntryKey, static_cast<float>(EntryValue));
			NewCurve->SetKeyInterpMode(KeyHandle, InterpMode);
		}

		RowMap.Add(RowName, NewCurve);
	}

	Modify(true);
	return OutProblems;
}

TArray<FString> UCurveTable::CreateTableFromCSVString(const FString& InString, ERichCurveInterpMode InterpMode)
{
	// Array used to store problems about table creation
	TArray<FString> OutProblems;

	const FCsvParser Parser(InString);
	const FCsvParser::FRows& Rows = Parser.GetRows();

	// Must have at least 2 rows (x values + y values for at least one row)
	if(Rows.Num() <= 1)
	{
		OutProblems.Add(FString(TEXT("Too few rows.")));
		return OutProblems;
	}

	// Empty existing data
	EmptyTable();

	TArray<float> XValues;
	GetCurveValues(Rows[0], &XValues);

	// Iterate over rows
	for(int32 RowIdx = 1; RowIdx < Rows.Num(); RowIdx++)
	{
		const TArray<const TCHAR*>& Row = Rows[RowIdx];

		// Need at least 1 cells (row name)
		if(Row.Num() < 1)
		{
			OutProblems.Add(FString::Printf(TEXT("Row '%d' has too few cells."), RowIdx));
			continue;
		}

		// Get row name
		FName RowName = MakeValidName(Row[0]);

		// Check its not 'none'
		if(RowName == NAME_None)
		{
			OutProblems.Add(FString::Printf(TEXT("Row '%d' missing a name."), RowIdx));
			continue;
		}

		// Check its not a duplicate
		if(RowMap.Find(RowName) != NULL)
		{
			OutProblems.Add(FString::Printf(TEXT("Duplicate row name '%s'."), *RowName.ToString()));
			continue;
		}

		TArray<float> YValues;
		GetCurveValues(Row, &YValues);

		if(XValues.Num() != YValues.Num())
		{
			OutProblems.Add(FString::Printf(TEXT("Row '%s' does not have the right number of columns."), *RowName.ToString()));
			continue;
		}

		FRichCurve* NewCurve = new FRichCurve();
		// Now iterate over cells (skipping first cell, that was row name)
		for(int32 ColumnIdx = 0; ColumnIdx < XValues.Num(); ColumnIdx++)
		{
			FKeyHandle KeyHandle = NewCurve->AddKey(XValues[ColumnIdx], YValues[ColumnIdx]);
			NewCurve->SetKeyInterpMode(KeyHandle, InterpMode);
		}

		RowMap.Add(RowName, NewCurve);
	}

	Modify(true);
	return OutProblems;
}