Mercurial > code > home > repos > light9
comparison Op.py @ 0:45b12307c695
Initial revision
| author | drewp |
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| date | Wed, 03 Jul 2002 09:37:57 +0000 |
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| children |
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| -1:000000000000 | 0:45b12307c695 |
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| 1 """each node type has an Op within it""" | |
| 2 | |
| 3 class Op: | |
| 4 """nodes can have several versions of their operation function. | |
| 5 | |
| 6 ops don't return anything! | |
| 7 """ | |
| 8 def __init__(self): | |
| 9 """This should not be overridden without being called.""" | |
| 10 pass | |
| 11 | |
| 12 def inputschanged(self, input, output, stateaccess): | |
| 13 """If you only define one op function body, make it this one. """ | |
| 14 pass | |
| 15 | |
| 16 def created(self, input, output, stateaccess): | |
| 17 """This is called one time when the node is newly created. It's | |
| 18 not called when the node instance is pickled/unpickled. Use this | |
| 19 version to initialize state.""" | |
| 20 # an extra call to changed() should help the outputs get set | |
| 21 # correctly before any real inputs-changed events come around | |
| 22 # (assuming this method doesn't get overridden with a | |
| 23 # specialized version) | |
| 24 self.inputschanged(input, output, stateaccess) | |
| 25 | |
| 26 def statechanged(self, input, output, stateaccess): | |
| 27 '''State might have been changed by a user dragging a parameter or by | |
| 28 a state being hcanged otherwise.''' | |
| 29 self.inputschanged(input, output, stateaccess) | |
| 30 | |
| 31 def clocked(self, input, output, stateaccess): | |
| 32 self.inputschanged(input, output, stateaccess) |