VisionEgg.FlowControl.EvalStringController

Package VisionEgg :: Module FlowControl :: Class EvalStringController

Class EvalStringController

object --+    
         |    
Controller --+
             |
            EvalStringController

Known Subclasses:: PyroEvalStringController

Set parameters using dynamically interpreted Python string.

The string, when evaluated as Python code, becomes the value used.
For example, the string "1.0" would set parameter values to 1.0.

To increase speed, the string is compiled to Python's bytecode
format.

The string can make use of temporal variables, which are made
available depending on the controller's temporal_variables
attribute. Note that only the absolute temporal variables are
available when the go loop is not running.

flag(s) present    variable  description

TIME_SEC_ABSOLUTE  t_abs     seconds, continuously increasing
TIME_SEC_SINCE_GO  t         seconds, reset to 0.0 each go loop
FRAMES_ABSOLUTE    f_abs     frames, continuously increasing
FRAMES_SINCE_GO    f         frames, reset to 0 each go loop

Method Summary
	`__init__(self, during_go_eval_string, between_go_eval_string, **kw)`
	`between_go_eval(self)` Called by Presentation.
	`during_go_eval(self)` Called by Presentation.
	`get_between_go_eval_string(self)`
	`get_during_go_eval_string(self)`
	`set_between_go_eval_string(self, between_go_eval_string)`
	`set_during_go_eval_string(self, during_go_eval_string)`
Inherited from Controller
	`evaluate_now(self)` Call this after updating the values of a controller if it's not evaluated EVERY_FRAME.
	`returns_type(self)` Called by Presentation.
	`set_eval_frequency(self, eval_frequency)`
Inherited from object
	`__delattr__(...)` x.__delattr__('name') <==> del x.name...
	`__getattribute__(...)` x.__getattribute__('name') <==> x.name...
	`__hash__(x)` x.__hash__() <==> hash(x)...
	`__reduce__(...)` helper for pickle...
	`__reduce_ex__(...)` helper for pickle...
	`__repr__(x)` x.__repr__() <==> repr(x)...
	`__setattr__(...)` x.__setattr__('name', value) <==> x.name = value...
	`__str__(x)` x.__str__() <==> str(x)...
Inherited from type
	`__new__(T, S, ...)` T.__new__(S, ...) -> a new object with type S, a subtype of T...

Class Variable Summary
Inherited from Controller
`int`	`EVERY_FRAME` = 1
`dict`	`flag_dictionary` = `{'EVERY_FRAME': 1, 'NOT_BETWEEN_GO': 1...`
`int`	`FRAMES_ABSOLUTE` = 4
`int`	`FRAMES_SINCE_GO` = 8
`int`	`NEVER` = 0
`int`	`NOT_BETWEEN_GO` = 16
`int`	`NOT_DURING_GO` = 8
`int`	`ONCE` = 4
`int`	`TIME_INDEPENDENT` = 0
`int`	`TIME_SEC_ABSOLUTE` = 1
`int`	`TIME_SEC_SINCE_GO` = 2
`int`	`TRANSITIONS` = 2

Method Details

between_go_eval(self)

Called by Presentation. Overrides method in Controller base class.

Overrides:: VisionEgg.FlowControl.Controller.between_go_eval

during_go_eval(self)

Called by Presentation. Overrides method in Controller base class.

Overrides:: VisionEgg.FlowControl.Controller.during_go_eval

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