We will create a Kurtis node in order to build a solid in Maya. (You must have Maya installed on your computer to follow this tutorial)
First, we create a simple node :
- Create an animation block in the vartree. A graph is automatically created.
- Open the graph (ctrl + o)
- Press the tab key and select "MayaNodeTemplate". The parameters are preset to easily integrate Python commands to Maya.
- (If you import it as a referenced node, right click on it and choose "Unlink Reference" to modify it.).
Next, we build a graph in an animation department block in order to check the result of this node :
- Import the Maya node "Init" to initialize the software in order to send commands.
- Connect its output "next" to the input "previous" of the "MayaNodeTemplate" node .
- Import the node "SaveMayaFile" to save the scene.
- Connect the "next" output of the "MayaNodeTemplate" node to the input "previous" of the "SaveMayaFile" node.
- Double-click on the "SaveMayaFile" node and set the "Save path" parameter of the "SaveMayaFile" node.
We will now write the script of our node:
- Right-click on the "MayaNodeTemplate" and pick "Edit Node"
- Go to the "General" tab and rename it "polyPlatonicSolid".
- Go to the "Scripts" tab and add in its script the command: "polyPlatonicSolid()".
- Execute the graph by right-clicking on the "SaveMayaFile" node and choose "Execute".
- When the Execute is finished, right-click again on this node and choose "Maya" to open the saved scene to check the result.
The command "polyPlatonicSolid()" has different arguments. They allow to :
- Choose its name.
- Select the type of solid to create.
- Define its radius.
Create these parameters in the node interface :
- Create a new input plug to define the name of the solid.
Rename it "name".
- Create a new input plug to define the type of solid to create.
Rename it "solidType".
Change its type into "list".
Set its default value as "".
- Create a last input plug to set the radius of the solid.
Rename it "radius".
Change its type into "float".
Set its default value as "1.0".
- Click on "Apply"
- Next, integrate these plugs in the node script. Assign value to each command argument.
cmds.polyPlatonicSolid(name=plugs.name, solidType=plugs.solidType, radius=plugs.radius)
These plugs need a user interface :
- Navigate to the tab "Plug UI".
- Create a new widget of type "Line Edit".
- Connect it to the "name" plug.
- Next, create a new widget of type "List".
- Connect it to the plug "solidType". Label it as you like.
- Add to its parameters the list of possible solid creation :
Dodecahedron / Icosahedron / Octahedron / Tetrahedron
- Then change the "Output mode" setting in "Indices".
- Click on "OK" to validate
- Create a type "Slider" widget.
- Connect it to the plug "radius".
- Click on "OK" to validate
- Double-click on the polyPlatonicSolid node and change the settings of the command from the node interface.
- Execute the "SaveMayaFile" node and open the file in Maya to see the different results.
You can also experiment with multiple "polyPlatonicSolid" nodes with different parameters for each polyPlatonicSolid node.