Same type port connections about nodegraphqt HOT 11 CLOSED

Hi @GTN0707,

In the NodeGraph class there's a set_acyclic() function you can set to True.
https://chantonic.com/NodeGraphQt/api/graphs/NodeGraph.html#NodeGraphQt.NodeGraph.set_acyclic

See also
https://chantonic.com/NodeGraphQt/api/nodes/BaseNode.html#NodeGraphQt.BaseNode.add_accept_port_type
https://chantonic.com/NodeGraphQt/api/port.html#NodeGraphQt.Port.add_accept_port_type

Cheers,
Johnny

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Thank you @jchanvfx! Your work is amazing!

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Thank you for your massive patience responding to me @jchanvfx! I really appreciate it.

I will look into those and see if I can figure out anything. Thanks again and have a wonderful day!

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just want to drop in to report that I think I did it! yay! It was a pretty convoluted snow ball of changes... like you pointed out, apply_live_connection and pipeItem class. also everything related to PortTypeEnum logic under graph, viewer, serialize, deserialize, undo, redo, connected_ports, redraw_connected_pipes...
I don't have a programming background but diving into your library definitely motivated me to learn python! Thank you so much!

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Awesome bro keep on keeping on 👍

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Awesome Thanks 😀

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I do have a follow up question:
What if all I want to constrain is the port type but want to leave port name and node type unconstrained?
{
'port_name': 'foo'
'port_type': PortTypeEnum.IN.value
'node_type': 'io.github.jchanvfx.NodeClass'
}

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You don't have to specify a port constrain type just leave the NodeGraph with acyclic set to True

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I assume you meant acyclic set to False right? So that we can have a cyclic graph?
If so yes I have done that. But I'm still not able to do same type port connections. E.g. IN to IN, OUT to OUT. I have cases where I have something like, IN01 connected to IN02 of the same node (shorting). or IN01 of node A connected to IN02 of node B. etc. and still have regular IN-OUT connections as well.
I haven't been able to trace down which part of code is preventing IN-IN, OUT-OUT connections.

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hmm... ok I think you might have to make some tweaks to the NodeViewer.apply_live_connection

https://github.com/jchanvfx/NodeGraphQt/blob/main/NodeGraphQt/widgets/viewer.py#L992

but I'm not sure if it's possible to have the same port type connections as you have to rework the PipeItem class too. 😢

https://github.com/jchanvfx/NodeGraphQt/blob/main/NodeGraphQt/qgraphics/pipe.py#L24

from nodegraphqt.

just want to drop in to report that I think I did it! yay! It was a pretty convoluted snow ball of changes... like you pointed out, apply_live_connection and pipeItem class. also everything related to PortTypeEnum logic under graph, viewer, serialize, deserialize, undo, redo, connected_ports, redraw_connected_pipes... I don't have a programming background but diving into your library definitely motivated me to learn python! Thank you so much!

Hi, any chance you publish your code ?

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