Nla Operators

bpy.ops.nla.action_pushdown(channel_index=-1)

Push action down onto the top of the NLA stack as a new strip

Parameters:

channel_index (int in [-1, inf], (optional)) – Channel Index, Index of NLA action channel to perform pushdown operation on

bpy.ops.nla.action_sync_length(active=True)

Synchronize the length of the referenced Action with the length used in the strip

Parameters:

active (boolean, (optional)) – Active Strip Only, Only sync the active length for the active strip

Unlink this action from the active action slot (and/or exit Tweak Mode)

Parameters:

force_delete (boolean, (optional)) – Force Delete, Clear Fake User and remove copy stashed in this data-block’s NLA stack

bpy.ops.nla.actionclip_add(action='')

Add an Action-Clip strip (i.e. an NLA Strip referencing an Action) to the active track

Parameters:

action (enum in [], (optional)) – Action

bpy.ops.nla.apply_scale()

Apply scaling of selected strips to their referenced Actions

bpy.ops.nla.bake(frame_start=1, frame_end=250, step=1, only_selected=True, visual_keying=False, clear_constraints=False, clear_parents=False, use_current_action=False, clean_curves=False, bake_types={'POSE'})

Bake all selected objects location/scale/rotation animation to an action

Parameters:

  • frame_start (int in [0, 300000], (optional)) – Start Frame, Start frame for baking

  • frame_end (int in [1, 300000], (optional)) – End Frame, End frame for baking

  • step (int in [1, 120], (optional)) – Frame Step, Frame Step

  • only_selected (boolean, (optional)) – Only Selected Bones, Only key selected bones (Pose baking only)

  • visual_keying (boolean, (optional)) – Visual Keying, Keyframe from the final transformations (with constraints applied)

  • clear_constraints (boolean, (optional)) – Clear Constraints, Remove all constraints from keyed object/bones, and do ‘visual’ keying

  • clear_parents (boolean, (optional)) – Clear Parents, Bake animation onto the object then clear parents (objects only)

  • use_current_action (boolean, (optional)) – Overwrite Current Action, Bake animation into current action, instead of creating a new one (useful for baking only part of bones in an armature)

  • clean_curves (boolean, (optional)) – Clean Curves, After baking curves, remove redundant keys

  • bake_types (enum set in {'POSE', 'OBJECT'}, (optional)) –

    Bake Data, Which data’s transformations to bake

    • POSE Pose – Bake bones transformations.

    • OBJECT Object – Bake object transformations.

File:

startup/bl_operators/anim.py:256

bpy.ops.nla.channels_click(extend=False)

Handle clicks to select NLA channels

Parameters:

extend (boolean, (optional)) – Extend Select

bpy.ops.nla.clear_scale()

Reset scaling of selected strips

bpy.ops.nla.click_select(wait_to_deselect_others=False, mouse_x=0, mouse_y=0, extend=False, deselect_all=False)

Handle clicks to select NLA Strips

Parameters:

  • wait_to_deselect_others (boolean, (optional)) – Wait to Deselect Others

  • mouse_x (int in [-inf, inf], (optional)) – Mouse X

  • mouse_y (int in [-inf, inf], (optional)) – Mouse Y

  • extend (boolean, (optional)) – Extend Select

  • deselect_all (boolean, (optional)) – Deselect On Nothing, Deselect all when nothing under the cursor

bpy.ops.nla.delete()

Delete selected strips

bpy.ops.nla.duplicate(linked=False)

Duplicate selected NLA-Strips, adding the new strips to new track(s)

Parameters:

linked (boolean, (optional)) – Linked, When duplicating strips, assign new copies of the actions they use

bpy.ops.nla.duplicate_linked_move(NLA_OT_duplicate=None, TRANSFORM_OT_translate=None)

Duplicate Linked selected NLA-Strips, adding the new strips to new track(s)

Parameters:

  • NLA_OT_duplicate (NLA_OT_duplicate, (optional)) – Duplicate Strips, Duplicate selected NLA-Strips, adding the new strips to new track(s)

  • TRANSFORM_OT_translate (TRANSFORM_OT_translate, (optional)) – Move, Move selected items

bpy.ops.nla.duplicate_move(NLA_OT_duplicate=None, TRANSFORM_OT_translate=None)

Duplicate selected NLA-Strips, adding the new strips to new track(s)

Parameters:

  • NLA_OT_duplicate (NLA_OT_duplicate, (optional)) – Duplicate Strips, Duplicate selected NLA-Strips, adding the new strips to new track(s)

  • TRANSFORM_OT_translate (TRANSFORM_OT_translate, (optional)) – Move, Move selected items

bpy.ops.nla.fmodifier_add(type='nullptr', only_active=True)

Add F-Modifier to the active/selected NLA-Strips

Parameters:

  • type (enum in Fmodifier Type Items, (optional)) – Type

  • only_active (boolean, (optional)) – Only Active, Only add a F-Modifier of the specified type to the active strip

bpy.ops.nla.fmodifier_copy()

Copy the F-Modifier(s) of the active NLA-Strip

bpy.ops.nla.fmodifier_paste(only_active=True, replace=False)

Add copied F-Modifiers to the selected NLA-Strips

Parameters:

  • only_active (boolean, (optional)) – Only Active, Only paste F-Modifiers on active strip

  • replace (boolean, (optional)) – Replace Existing, Replace existing F-Modifiers, instead of just appending to the end of the existing list

bpy.ops.nla.make_single_user(confirm=True)

Ensure that each action is only used once in the set of strips selected

Parameters:

confirm (boolean, (optional)) – Confirm, Prompt for confirmation

bpy.ops.nla.meta_add()

Add new meta-strips incorporating the selected strips

bpy.ops.nla.meta_remove()

Separate out the strips held by the selected meta-strips

bpy.ops.nla.move_down()

Move selected strips down a track if there’s room

bpy.ops.nla.move_up()

Move selected strips up a track if there’s room

bpy.ops.nla.mute_toggle()

Mute or un-mute selected strips

bpy.ops.nla.previewrange_set()

Set Preview Range based on extends of selected strips

bpy.ops.nla.select_all(action='TOGGLE')

Select or deselect all NLA-Strips

Parameters:

action (enum in ['TOGGLE', 'SELECT', 'DESELECT', 'INVERT'], (optional)) –

Action, Selection action to execute

  • TOGGLE Toggle – Toggle selection for all elements.

  • SELECT Select – Select all elements.

  • DESELECT Deselect – Deselect all elements.

  • INVERT Invert – Invert selection of all elements.

bpy.ops.nla.select_box(axis_range=False, tweak=False, xmin=0, xmax=0, ymin=0, ymax=0, wait_for_input=True, mode='SET')

Use box selection to grab NLA-Strips

Parameters:

  • axis_range (boolean, (optional)) – Axis Range

  • tweak (boolean, (optional)) – Tweak, Operator has been activated using a click-drag event

  • xmin (int in [-inf, inf], (optional)) – X Min

  • xmax (int in [-inf, inf], (optional)) – X Max

  • ymin (int in [-inf, inf], (optional)) – Y Min

  • ymax (int in [-inf, inf], (optional)) – Y Max

  • wait_for_input (boolean, (optional)) – Wait for Input

  • mode (enum in ['SET', 'ADD', 'SUB'], (optional)) –

    Mode

    • SET Set – Set a new selection.

    • ADD Extend – Extend existing selection.

    • SUB Subtract – Subtract existing selection.

bpy.ops.nla.select_leftright(mode='CHECK', extend=False)

Select strips to the left or the right of the current frame

Parameters:

  • mode (enum in ['CHECK', 'LEFT', 'RIGHT'], (optional)) – Mode

  • extend (boolean, (optional)) – Extend Select

bpy.ops.nla.selected_objects_add()

Make selected objects appear in NLA Editor by adding Animation Data

bpy.ops.nla.snap(type='CFRA')

Move start of strips to specified time

Parameters:

type (enum in ['CFRA', 'NEAREST_FRAME', 'NEAREST_SECOND', 'NEAREST_MARKER'], (optional)) – Type

bpy.ops.nla.soundclip_add()

Add a strip for controlling when speaker plays its sound clip

bpy.ops.nla.split()

Split selected strips at their midpoints

bpy.ops.nla.swap()

Swap order of selected strips within tracks

bpy.ops.nla.tracks_add(above_selected=False)

Add NLA-Tracks above/after the selected tracks

Parameters:

above_selected (boolean, (optional)) – Above Selected, Add a new NLA Track above every existing selected one

bpy.ops.nla.tracks_delete()

Delete selected NLA-Tracks and the strips they contain

bpy.ops.nla.transition_add()

Add a transition strip between two adjacent selected strips

bpy.ops.nla.tweakmode_enter(isolate_action=False, use_upper_stack_evaluation=False)

Enter tweaking mode for the action referenced by the active strip to edit its keyframes

Parameters:

  • isolate_action (boolean, (optional)) – Isolate Action, Enable ‘solo’ on the NLA Track containing the active strip, to edit it without seeing the effects of the NLA stack

  • use_upper_stack_evaluation (boolean, (optional)) – Evaluate Upper Stack, In tweak mode, display the effects of the tracks above the tweak strip

bpy.ops.nla.tweakmode_exit(isolate_action=False)

Exit tweaking mode for the action referenced by the active strip

Parameters:

isolate_action (boolean, (optional)) – Isolate Action, Disable ‘solo’ on any of the NLA Tracks after exiting tweak mode to get things back to normal

bpy.ops.nla.view_all()

Reset viewable area to show full strips range

bpy.ops.nla.view_frame()

Move the view to the current frame

bpy.ops.nla.view_selected()

Reset viewable area to show selected strips range