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data_writer(visage) Visage data_writer(visage)

NAME

data_writer - abstract class for objects that write visualization data

DESCRIPTION

Data_writer is an abstract class that provides instance variables and methods for subclasses that write visualization related data. Data_writer is never instantiated.

SUPERCLASS

object

INSTANCE VARIABLES

data_in data or filter object that represents the data to write.

filename name of file to write.

clobber boolean to indicate whether or not file can be overwritten.

MESSAGES

data_in=object_name set the name of the object representing data.

data_in? get the name of the object representing data.

filename=filename set the filename to write.

filename? get the filename to write.

clobber_on!/clobber_off! turn file clobber on/off.

clobber=value set file clobbering: != 0 means file clobbering is on.

clobber? get the value of the file clobbering instance variable.

write_data! cause data_writer object to send write! to itself.

Note: write! must be implemented by subclass.