https://forums.autodesk.com/t5/maya-programming-forum/api-is-it-possible-to-make-a-dependent-node-without-any-input/m-p/11181990#M2497 <P>Is it possible to make a dependent node without any input ports to get information directly from Maya?<BR />like getting the timeline length from Maya. if the length is changed, the node can be updated automatically.</P><P>&nbsp;</P><P>I make some changes to my custom convert data node. however, the compute() part doesn't seem to be running.</P><LI-CODE lang="python">class GetTimelineRangeNode(om.MPxNode): TYPE_NAME = "GetTimelineRange" TYPE_ID = om.MTypeId(0x0007F7FB) start_frame = None # timeline range start end_frame = None def __init__(self): super().__init__() def compute(self, plug, data): if plug == GetTimelineRangeNode.start_frame or plug == GetTimelineRangeNode.end_frame: max_data_handle = data.outputValue(GetTimelineRangeNode.end_frame) max_data_handle.setFloat(oma.MAnimControl.maxTime().value) # getting timeline range, return MTime. min_data_handle = data.outputValue(GetTimelineRangeNode.start_frame) min_data_handle.setFloat(oma.MAnimControl.minTime().value) data.setClean(plug)</LI-CODE><P>&nbsp;</P> Fri, 20 May 2022 09:29:18 GMT g2m.agent 2022-05-20T09:29:18Z https://forums.autodesk.com/t5/maya-programming-forum/api-is-it-possible-to-make-a-dependent-node-without-any-input/m-p/11181990#M2497 <P>Is it possible to make a dependent node without any input ports to get information directly from Maya?<BR />like getting the timeline length from Maya. if the length is changed, the node can be updated automatically.</P><P>&nbsp;</P><P>I make some changes to my custom convert data node. however, the compute() part doesn't seem to be running.</P><LI-CODE lang="python">class GetTimelineRangeNode(om.MPxNode): TYPE_NAME = "GetTimelineRange" TYPE_ID = om.MTypeId(0x0007F7FB) start_frame = None # timeline range start end_frame = None def __init__(self): super().__init__() def compute(self, plug, data): if plug == GetTimelineRangeNode.start_frame or plug == GetTimelineRangeNode.end_frame: max_data_handle = data.outputValue(GetTimelineRangeNode.end_frame) max_data_handle.setFloat(oma.MAnimControl.maxTime().value) # getting timeline range, return MTime. min_data_handle = data.outputValue(GetTimelineRangeNode.start_frame) min_data_handle.setFloat(oma.MAnimControl.minTime().value) data.setClean(plug)</LI-CODE><P>&nbsp;</P> Fri, 20 May 2022 09:29:18 GMT https://forums.autodesk.com/t5/maya-programming-forum/api-is-it-possible-to-make-a-dependent-node-without-any-input/m-p/11181990#M2497 g2m.agent 2022-05-20T09:29:18Z https://forums.autodesk.com/t5/maya-programming-forum/api-is-it-possible-to-make-a-dependent-node-without-any-input/m-p/11182128#M2498 <P>If you just want the playback range you can use the scriptJob command to be notifed of that. (using the&nbsp;playbackRangeChanged event)<BR /><BR /><A href="https://help.autodesk.com/cloudhelp/2023/ENU/Maya-Tech-Docs/Commands/scriptJob.html" target="_blank">https://help.autodesk.com/cloudhelp/2023/ENU/Maya-Tech-Docs/Commands/scriptJob.html</A></P> Fri, 20 May 2022 10:23:21 GMT https://forums.autodesk.com/t5/maya-programming-forum/api-is-it-possible-to-make-a-dependent-node-without-any-input/m-p/11182128#M2498 brentmc 2022-05-20T10:23:21Z