Package VisionEgg :: Module FlowControl :: Class EvalStringController |
[frames] | no frames]

# Class EvalStringController

source code

    object --+
             |
    Controller --+
                 |
                EvalStringController

    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

Instance Methods
__init__(self, during_go_eval_string=None, between_go_eval_string=None, **kw) Create instance of Controller. | source code
set_during_go_eval_string(self, during_go_eval_string) | source code
get_during_go_eval_string(self) | source code
set_between_go_eval_string(self, between_go_eval_string) | source code
get_between_go_eval_string(self) | source code
during_go_eval(self) Called by Presentation. | source code
between_go_eval(self) Called by Presentation. | source code
Inherited from `Controller`: `evaluate_now`, `returns_type`, `set_eval_frequency` Inherited from `object`: `__delattr__`, `__getattribute__`, `__hash__`, `__new__`, `__reduce__`, `__reduce_ex__`, `__repr__`, `__setattr__`, `__str__`

Class Variables
Inherited from `Controller`: `EVERY_FRAME`, `FRAMES_ABSOLUTE`, `FRAMES_SINCE_GO`, `NEVER`, `NOT_BETWEEN_GO`, `NOT_DURING_GO`, `ONCE`, `TIME_INDEPENDENT`, `TIME_SEC_ABSOLUTE`, `TIME_SEC_SINCE_GO`, `TRANSITIONS`, `flag_dictionary`

Properties
Inherited from `object`: `__class__`

Method Details

### __init__(self, during_go_eval_string=None, between_go_eval_string=None, **kw) (Constructor) | source code
    Create instance of Controller.

    Arguments:

    eval_frequency -- Int, bitwise "or" of flags
    temporal_variables -- Int, bitwise "or" of flags
    return_type -- Set to type() of the parameter under control
Overrides: Controller.__init__ (inherited documentation)

### during_go_eval(self) | source code
    Called by Presentation. Overrides method in Controller base class.
Overrides: Controller.during_go_eval

### between_go_eval(self) | source code
    Called by Presentation. Overrides method in Controller base class.
Overrides: Controller.between_go_eval