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 datablock’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, bake_types={'POSE'})

Bake all selected objects loc/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)
  • 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:261

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, mode='TRANSLATION')

Duplicate selected NLA-Strips, adding the new strips in new tracks above the originals

Parameters:
  • linked (boolean, (optional)) – Linked, When duplicating strips, assign new copies of the actions they use
  • mode (enum in ['INIT', 'DUMMY', 'TRANSLATION', 'ROTATION', 'RESIZE', 'SKIN_RESIZE', 'TOSPHERE', 'SHEAR', 'BEND', 'SHRINKFATTEN', 'TILT', 'TRACKBALL', 'PUSHPULL', 'CREASE', 'MIRROR', 'BONE_SIZE', 'BONE_ENVELOPE', 'BONE_ENVELOPE_DIST', 'CURVE_SHRINKFATTEN', 'MASK_SHRINKFATTEN', 'GPENCIL_SHRINKFATTEN', 'BONE_ROLL', 'TIME_TRANSLATE', 'TIME_SLIDE', 'TIME_SCALE', 'TIME_EXTEND', 'BAKE_TIME', 'BWEIGHT', 'ALIGN', 'EDGESLIDE', 'SEQSLIDE', 'GPENCIL_OPACITY'], (optional)) – Mode
bpy.ops.nla.fmodifier_add(type='NULL', only_active=True)

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

Parameters:
  • type (enum in ['NULL', 'GENERATOR', 'FNGENERATOR', 'ENVELOPE', 'CYCLES', 'NOISE', 'LIMITS', 'STEPPED'], (optional)) –

    Type

    • NULL Invalid.
    • GENERATOR Generator, Generate a curve using a factorized or expanded polynomial.
    • FNGENERATOR Built-In Function, Generate a curve using standard math functions such as sin and cos.
    • ENVELOPE Envelope, Reshape F-Curve values - e.g. change amplitude of movements.
    • CYCLES Cycles, Cyclic extend/repeat keyframe sequence.
    • NOISE Noise, Add pseudo-random noise on top of F-Curves.
    • LIMITS Limits, Restrict maximum and minimum values of F-Curve.
    • STEPPED Stepped Interpolation, Snap values to nearest grid-step - e.g. for a stop-motion look.
  • 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()

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

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()

Automatically set Preview Range based on range of keyframes

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 tweak 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)

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
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 playhead

bpy.ops.nla.view_selected()

Reset viewable area to show selected strips range