A selector function for use within the visual shader graph. Returns an associated value of the [code]op_type[/code] type if the provided boolean value is [code]true[/code] or [code]false[/code]. A type of operands and returned value. A floating-point scalar. An integer scalar. An unsigned integer scalar. A 2D vector type. A 3D vector type. A 4D vector type. A boolean type. A transform type. Represents the size of the [enum OpType] enum.