Shape keys on a single action?

CathodePlayer · November 12, 2024, 3:30am

Hello! Im currently in the process of animating a model that has a single character movement on a single action for a project. This character has shape keys to move the fabric of his shirt when his arms move, however I can not get the shape keys to move on a single action, and they will proceed to move on each and every one. How do I go about keeping these specific shape keys on their respective action? Thank you!

joseph · November 12, 2024, 4:23am

You have to use Python scripting. See:

github.com

josephclaytonhansen/blender-addons/blob/main/audio-2-face-weights-import

bl_info = {
    "name": "A2F Import Weights",
    "blender": (3, 6, 0),
    "version": (1, 3, 0)
}

import bpy
from bpy.props import StringProperty, IntProperty
from bpy.types import Panel, Operator, PropertyGroup
import json

class createAnimation(Operator):
    bl_label = "Create Animation"
    bl_idname = 'object.blendshape_animation_operator'
    
    filepath: StringProperty(name="JSON file", description="JSON blendshape file from Audio2Face", subtype="FILE_PATH")
    multiplier: IntProperty(name="Multiplier", description="Multiplier for blendshape strength", default=1, min=1)
    
    def execute(self, context):
        try:

This file has been truncated. show original

This should get you started, it has what you need

thorn · November 12, 2024, 5:04am

I think you meant to post that other script (which name I cannot recall).

Aan_Whiskey · November 12, 2024, 5:09am

export files or stayn at blender files ?

CathodePlayer · November 12, 2024, 5:49am

Exporting to unity!

Aan_Whiskey · November 13, 2024, 2:36am

if you could… take a screenshoot of those rig, maybe we can help to adding driver formula into

joseph · November 13, 2024, 4:02am

Drivers don’t export

Aan_Whiskey · November 13, 2024, 4:06am

i ve frequently did it, and it works… such a shape key driver.

joseph · November 13, 2024, 4:23am

I’m sorry to say you’re factually wrong. Drivers are Python based, they do not export to .fbx, .USD, .gltf., or .obj files. You can bake drivers, yes, but that’s not what the question is about, and there’s no need for drivers at all here. OP wants shape keys on an armature action- you can either do it with a script, like the one I provided, or use an existing script like Auto Rig Pro’s FBX exporter. Drivers will not help

Aan_Whiskey · November 14, 2024, 3:03am

if u said FBX shapekeys cant export is yes thats right, … but we still can export shapekeys data with glTF file, it works.

…

joseph · November 14, 2024, 3:29am

I never said shape keys don’t export- they do, including in FBX. Drivers don’t

Aan_Whiskey · November 14, 2024, 9:48am

i m lil bit confuse here, why the driver cant export ? . lets say we have motion that using FK and IK in one shot, such doing high jump and landing. . IK (leg) before jump, when our position at the air our leg is changed into IK → FK. and reverse when we re landing.
…
so when we switch IK – > FK < – IK … we are using driver, then whats the different here ? .