Class cocos.actions.grid3d_actions.Twirl

             object --+                
                      |                
    base_actions.Action --+            
                          |            
base_actions.IntervalAction --+        
                              |        
basegrid_actions.GridBaseAction --+    
                                  |    
      basegrid_actions.Grid3DAction --+
                                      |
                                     Twirl

Simulates a twirl effect modifying the x and y coordinates. The z coordinate is not modified.

Example:

scene.do( Twirl( center=(320,240), twirls=5, amplitude=1, grid=(16,12), duration=10) )

Methods

	init(self, center=(-1,-1), twirls=4, amplitude=1, args, *kw) Initialize the Grid Action
	update(self, t) Gets called on every frame.
Inherited from `basegrid_actions.Grid3DAction`: `get_grid`, `get_original_vertex`, `get_vertex`, `set_vertex` Inherited from `basegrid_actions.GridBaseAction`: `__reversed__`, `start` Inherited from `base_actions.IntervalAction`: `done` Inherited from `base_actions.Action`: `__add__`, `__init__`, `__mul__`, `__or__`, `step`, `stop` Inherited from `object`: `__delattr__`, `__getattribute__`, `__hash__`, `__new__`, `__reduce__`, `__reduce_ex__`, `__repr__`, `__setattr__`, `__str__`

Properties

Inherited from object: __class__

Instance Variables

	position position of the center of the Twril.
	twirls total number of twirls
	amplitude amplitude of the twirls
	amplitude_rate amplitude rate.
Inherited from `base_actions.Action`: `target`

Method Details

init

init(self, center=(-1,-1), twirls=4, amplitude=1, *args, **kw)

Initialize the Grid Action

Parameters:

twirls : int: Number of twirls (2 * pi) that the action will perform. Default is 4
amplitude : flaot: Twirl amplitude. Default is 1
center : (int,int): Center of the twirl in x,y coordinates. Default: center of the screen

Overrides:

basegrid_actions.GridBaseAction.init

update

update(self, t)

Gets called on every frame. t is in [0,1] If this action takes 5 seconds to execute, t will be equal to 0 at 0 seconds. t will be 0.5 at 2.5 seconds and t will be 1 at 5sec.

Overrides:: base_actions.IntervalAction.update

Instance Variable Details

position

position of the center of the Twril. Type: (int,int). This value can be modified by other actions, like JumpBy to simulate a jumping Twirl

amplitude_rate

amplitude rate. Default: 1.0. This value is modified by other actions like AccelAmplitude.