Load .pkr File Using Python

[Steve_Addeo]

I’m trying to add a picker file to a rig builder but can’t seem to figure out how to load the file. Does anyone know how to do this?

Thank you for your help!

[chrislesage]

I’m new to the Anim Picker. I do not know if there is a best way. I am almost certain there must be a more straight-forward way. But this might give you some hints.

Disclaimer: This is not a script meant to run from start to finish. It is a collection of the commands you can use to create a picker node, and read the data from a file. Use only the commands you need.

import pymel.core as pm
from mgear import anim_picker

# If you already have picker nodes in the scene, you can find them this way.
pickerNodes = anim_picker.picker_node.get_nodes()
pickerNodes[0].read_data_from_file()
# The objects this command returns are DataNode() class objects, which you can use with the commands below:

# OR... HOW TO CREATE A NEW PICKER NODE:

# Creates a picker data class, DataNode()
newPicker = anim_picker.picker_node.DataNode()

# Creates the PICKER_DATAS node in the scene
newPicker.create()

# Gets the NAME of the data and file path attribute from the node.
pickerFileAttrName = newPicker.__FILE_ATTR__
pickerDataAttrName = newPicker.__DATAS_ATTR__

# Finds the picker node in the scene
pickerNode = pm.PyNode(newPicker.__NODE__)
pickerNode.rename('CHOOSE_A_PICKER_NAME')

# Finds the data and file node attributes
pickerFileAttr = pickerNode.attr(pickerFileAttrName)
pickerDataAttr = pickerNode.attr(pickerDataAttrName)

# Set the file path on the node
yourDataPath = '/Users/chrislesage/production/mGear/tools/mgear_3.6.0/anim_picker_samples/biped_template.pkr'
newPicker._set_str_attr(newPicker.__FILE_ATTR__, value=yourDataPath)

# if your picker already has a filepath set in the attribute, you can query what the path is:
newPicker.get_file_path()

# Reads the data from the file attribute on the picker node
pickerDataFromFile = newPicker.read_data_from_file()

# Set the picker NODE DATA from the FILE DATA it reads
newPicker._set_str_attr(newPicker.__DATAS_ATTR__, value=pickerDataFromFile)

Hope that helps! If someone has a more official way, please do answer.

[Steve_Addeo]

That worked! Thank you so much!

[gwall]

Thank you again Chris! I changed a little on my end, but it all works. Thank you!

[RagnarB]

I wrote a little function for this, that could probably be a part of the picker itself.

This way you can simply run either of these in your custom step:
import_picker("/path/to/my/anim_piker.pkr)
import_picker("/path/to/my/anim_piker.pkr, name=“bob_the_picker”)

from mgear.anim_picker import picker_node
from mgear.anim_picker.handlers import file_handlers

def import_picker(path, name=None):
    """                                                                         
    Import picker data from file.                                               
    """
    pkr_data = file_handlers.read_data_file(path)
    pkr_data["source_file_path"] = path
    if name:
        data_node = picker_node.DataNode(name=name)
    else:
        data_node = picker_node.DataNode(name=name)
    data_node.create()
    data_node.write_data(data=pkr_data)
    data_node.read_data()

    return pm.PyNode(data_node.name)