Mesh Bone Rig Animation To Shape Keys.py

"""
Copyright (c) [2/25/24] [Dieton]

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

Instructions
1. Make sure to add "Shapekey_Name_List.txt" to code
2. Make sure Armature Modifier Name is Armature
3. Select object mesh in object mode
4. press play
5. done
"""
import bpy

def read_names_from_file(file_path):
    names = []
    with open(file_path, 'r') as file:
        for line in file:
            names.append(line.strip())
    return names

def apply_shape_keys_from_file():
    # Get the active object
    active_object = bpy.context.active_object

    # Check if an object is selected and is in Object mode
    if active_object and active_object.type == 'MESH' and bpy.context.mode == 'OBJECT':
        # Ensure the mesh has an armature modifier
        armature_modifier = active_object.modifiers.get("Armature")
        if not armature_modifier:
            print("Error: Please select a mesh with an Armature modifier.")
            return

        # Set the file path to the text file containing names (replace with your file path)
        file_path = "Shapekey_Name_List.txt"

        # Read names from the file
        names = read_names_from_file(file_path)

        # Set the frame range based on your animation
        start_frame = bpy.context.scene.frame_start
        end_frame = bpy.context.scene.frame_end

        # Iterate over each frame
        for frame in range(start_frame, end_frame + 1):
            # Set the current frame
            bpy.context.scene.frame_set(frame)

            # Apply the armature modifier as a shape key
            bpy.ops.object.modifier_apply_as_shapekey(keep_modifier=True, modifier="Armature")

            # Assign a name from the list to the new shape key
            shape_key_name = names[frame % len(names)]
            active_object.data.shape_keys.key_blocks[-1].name = shape_key_name

        print("Shape keys applied and named from the file.")
    else:
        print("Error: Please select a mesh object in Object mode.")

# Call the function to apply shape keys and assign names
apply_shape_keys_from_file()