zoetrope.py

bl_info = {"name": "Zoetrope", "category": "Animation"}

import bpy


class Zoetrope(bpy.types.Operator):
    bl_idname = "anim.zoetrope"
    bl_label = "Zoetrope"

    def execute(self, context):
        scene = context.scene
        anim_col = self.get_or_create_coll("anim")

        src_objs = bpy.context.selected_objects

        scene.frame_set(0)
        for i in range(scene.frame_start, scene.frame_end + 1):
            scene.frame_set(i)

            bpy.ops.object.select_all(action='DESELECT')
            for obj in src_objs:
                obj.select_set(True)

            bpy.ops.object.duplicate()
            bpy.ops.object.parent_clear(type='CLEAR_KEEP_TRANSFORM')
            for j, copy_obj in enumerate(bpy.context.selected_objects):
                copy_obj.name = f"frame.{i}.{j}"
                self.apply_armature(copy_obj)
                self.move_to_collection(anim_col, copy_obj)
        return {'FINISHED'}

    def move_to_collection(self, anim_col, obj):
        for col in obj.users_collection:
            col.objects.unlink(obj)
        anim_col.objects.link(obj)

    def apply_armature(self, obj):
        for mod in obj.modifiers:
            if mod.type == 'ARMATURE':
                bpy.ops.object.modifier_apply(modifier=mod.name, use_selected_objects=True)

    def get_or_create_coll(self, name: str):
        if name not in [col.name for col in bpy.data.collections]:
            bpy.data.collections.new(name)
        anim_col = bpy.data.collections[name]
        return anim_col


def register():
    bpy.utils.register_class(Zoetrope)


def unregister():
    bpy.utils.unregister_class(Zoetrope)


if __name__ == "__main__":
    register()