Create B4W logic nodes by using Python
29 April 2016 23:43
Video https://www.youtube.com/watch?v=8tELJBf53Kc shows how to add and link Cycle nodes in Blender by using Python. Unfortunately I can't figure out how to do this for B4W logic nodes. Could somebody give me an example?
04 May 2016 11:45
Hello and welcome to our forum! ![]( "smiling")
Sorry for delayed answer, we were really busy with b4w conference stuff.
For example the next code snippet will add "move to" node to logic the tree named "B4W_LogicTree":
I can't describe all aspects of the question in one answer. So if you are interested in this topic in general you should take a look at "logic_node_tree.py" to learn about our logic nodes inner structure. This file is a part of our Blender addon.
If you have certain task or question, I will answer more concrete![]( "smiling")
Sorry for delayed answer, we were really busy with b4w conference stuff.
Video https://www.youtube.com/watch?v=8tELJBf53Kc shows how to add and link Cycle nodes in Blender by using Python. Unfortunately I can't figure out how to do this for B4W logic nodes. Could somebody give me an example?Of course you can add b4w logic nodes via Python scripting.
For example the next code snippet will add "move to" node to logic the tree named "B4W_LogicTree":
node = bpy.data.node_groups['B4W_LogicTree'].nodes.new(type='B4W_logic_node')
node.type = 'MOVE_TO'
I can't describe all aspects of the question in one answer. So if you are interested in this topic in general you should take a look at "logic_node_tree.py" to learn about our logic nodes inner structure. This file is a part of our Blender addon.
If you have certain task or question, I will answer more concrete
05 May 2016 15:55
Thank you Konstantin!
After searching I was able to create a small tree (as a start):
This is okay, I believe, but how do I select an object (the default cube) in Switch_Select and how do I add a new socket?![]( "cold-sweat")
By the way, I watched the conference video. Congratulations!
After searching I was able to create a small tree (as a start):
import bpy
scene = bpy.context.scene
scene.render.engine = 'BLEND4WEB'
scene.b4w_use_logic_editor = True
bpy.ops.node.new_node_tree(type='B4WLogicNodeTreeType', name="B4WLogicNodeTree")
scene.b4w_active_logic_node_tree = "B4WLogicNodeTree"
ntree = bpy.data.node_groups['B4WLogicNodeTree']
links=ntree.links
e_point = ntree.nodes.new(type='B4W_logic_node')
e_point.type = 'ENTRYPOINT'
regstore = ntree.nodes.new(type='B4W_logic_node')
regstore.type = 'REGSTORE'
regstore.floats['inp1'].float = 2 [s]regstore.param_number1 = 1[/s]
regstore.location = 160, 100
sw_select = ntree.nodes.new(type='B4W_logic_node')
sw_select.type = 'SWITCH_SELECT'
sw_select.location = 400, 100
move_to = ntree.nodes.new(type='B4W_logic_node')
move_to.type = 'MOVE_TO'
move_to.location = 650, 100
reroute1 = ntree.nodes.new("NodeReroute")
reroute1.location = 600, -100
reroute2 = ntree.nodes.new("NodeReroute")
reroute2.location = 380, -100
links.new(e_point.outputs[0], regstore.inputs[0])
links.new(regstore.outputs[0], sw_select.inputs[0])
links.new(sw_select.outputs[0], move_to.inputs[0])
links.new(sw_select.outputs[2], reroute1.inputs[0])
links.new(reroute1.outputs[0], reroute2.inputs[0])
links.new(reroute2.outputs[0], sw_select.inputs[0])
This is okay, I believe, but how do I select an object (the default cube) in Switch_Select and how do I add a new socket?
By the way, I watched the conference video. Congratulations!
05 May 2016 16:35
By the way, I watched the conference video. Congratulations!Thank you! Really glad to hear!
We won't stop on it!
After searching I was able to create a small tree (as a start):Great job!
This is okay, I believe, but how do I select an object (the default cube) in Switch_SelectIn case of not dupli grouped objects it is simple:
node = … #your node
node.objects_paths['id0'].path = 'Cube' #name of the object
Adding a new socket may be tricky. I'll figure out the optimal way and give you an answer a little bit later
06 May 2016 16:46
and how do I add a new socket?
Adding a new socket to the "Switch Select" will be something like this:
bpy.ops.node.b4w_logic_add_dyn_jump_sock('INVOKE_DEFAULT', node_tree="B4WLogicNodeTree", node="B4WLogicNode.002", sock="id1")
#increment number in sock parameter
09 May 2016 23:03
Thank you Konstantin.
As far as I understand in my code it should be like
An alternative way is starting with a switch_select node with many empty sockets (manually), but this is not really satisfying.![]( "confused")
What do you think?
As far as I understand in my code it should be like
bpy.ops.node.b4w_logic_add_dyn_jump_sock('INVOKE_DEFAULT', node_tree="B4WLogicNodeTree", node="sw_select", sock="id1")An alternative way is starting with a switch_select node with many empty sockets (manually), but this is not really satisfying.
What do you think?
10 May 2016 10:39
As far as I understand in my code it should be like
bpy.ops.node.b4w_logic_add_dyn_jump_sock('INVOKE_DEFAULT', node_tree="B4WLogicNodeTree", node="sw_select", sock="id1")
or something but it doesn't give the result I want.
bpy.ops.node.b4w_logic_add_dyn_jump_sock('INVOKE_DEFAULT', node_tree="B4WLogicNodeTree", node="B4WLogicNode.002", sock="id1")
#increment number in sock parameter
I've tested it. You need to specify the "node" parameter as "B4WLogicNode.002". This parameter corresponds to the "Name" property of the node. If you don't specify a node name manually it is autogenerated as "B4WLogicNode.i".
This way of adding a new socket is better then adding empty sockets manually, because it reproduces exactly what happens, when you press the button to add a socket in the node.
12 May 2016 15:43
Hmm. What am I doing wrong? Even when the node is already added manually I can't add a new socket with Python. Could there be other factors then just the code?
12 May 2016 15:45
Hmm. What am I doing wrong? Even when the node is already added manually I can't add a new socket with Python. Could there be other factors then just the code?Could you please attach a minimal .blend file saved after using this code snippet, so I can check the issue