FCurve(bpy_struct)

base class — bpy_struct

class bpy.types.FCurve(bpy_struct)

F-Curve defining values of a period of time

array_index

Index to the specific property affected by F-Curve if applicable

Type:int in [-inf, inf], default 0
auto_smoothing

Algorithm used to compute automatic handles

  • NONE None, Auto handles only take adjacent keys into account (legacy mode).
  • CONT_ACCEL Continuous Acceleration, Auto handles are placed to avoid jumps in acceleration.
Type:enum in [‘NONE’, ‘CONT_ACCEL’], default ‘NONE’
color

Color of the F-Curve in the Graph Editor

Type:float array of 3 items in [0, 1], default (0.0, 0.0, 0.0)
color_mode

Method used to determine color of F-Curve in Graph Editor

  • AUTO_RAINBOW Auto Rainbow, Cycle through the rainbow, trying to give each curve a unique color.
  • AUTO_RGB Auto XYZ to RGB, Use axis colors for transform and color properties, and auto-rainbow for the rest.
  • AUTO_YRGB Auto WXYZ to YRGB, Use axis colors for XYZ parts of transform, and yellow for the ‘W’ channel.
  • CUSTOM User Defined, Use custom hand-picked color for F-Curve.
Type:enum in [‘AUTO_RAINBOW’, ‘AUTO_RGB’, ‘AUTO_YRGB’, ‘CUSTOM’], default ‘AUTO_RAINBOW’
data_path

RNA Path to property affected by F-Curve

Type:string, default “”, (never None)
driver

Channel Driver (only set for Driver F-Curves)

Type:Driver, (readonly)
extrapolation

Method used for evaluating value of F-Curve outside first and last keyframes

  • CONSTANT Constant, Hold values of endpoint keyframes.
  • LINEAR Linear, Use slope of curve leading in/out of endpoint keyframes.
Type:enum in [‘CONSTANT’, ‘LINEAR’], default ‘CONSTANT’
group

Action Group that this F-Curve belongs to

Type:ActionGroup
hide

F-Curve and its keyframes are hidden in the Graph Editor graphs

Type:boolean, default False
is_valid

False when F-Curve could not be evaluated in past, so should be skipped when evaluating

Type:boolean, default False
keyframe_points

User-editable keyframes

Type:FCurveKeyframePoints bpy_prop_collection of Keyframe, (readonly)
lock

F-Curve’s settings cannot be edited

Type:boolean, default False
modifiers

Modifiers affecting the shape of the F-Curve

Type:FCurveModifiers bpy_prop_collection of FModifier, (readonly)
mute

Disable F-Curve Modifier evaluation

Type:boolean, default False
sampled_points

Sampled animation data

Type:bpy_prop_collection of FCurveSample, (readonly)
select

F-Curve is selected for editing

Type:boolean, default False
evaluate(frame)

Evaluate F-Curve

Parameters:frame (float in [-inf, inf]) – Frame, Evaluate F-Curve at given frame
Returns:Value, Value of F-Curve specific frame
Return type:float in [-inf, inf]
update()

Ensure keyframes are sorted in chronological order and handles are set correctly

range()

Get the time extents for F-Curve

Returns:Range, Min/Max values
Return type:float array of 2 items in [-inf, inf]
update_autoflags(data)

Update FCurve flags set automatically from affected property (currently, integer/discrete flags set when the property is not a float)

Parameters:data (AnyType, (never None)) – Data, Data containing the property controlled by given FCurve
convert_to_samples(start, end)

Convert current FCurve from keyframes to sample points, if necessary

Parameters:
  • start (int in [-1048574, 1048574]) – Start Frame
  • end (int in [-1048574, 1048574]) – End Frame
convert_to_keyframes(start, end)

Convert current FCurve from sample points to keyframes (linear interpolation), if necessary

Parameters:
  • start (int in [-1048574, 1048574]) – Start Frame
  • end (int in [-1048574, 1048574]) – End Frame
classmethod bl_rna_get_subclass(id, default=None)
Parameters:id (string) – The RNA type identifier.
Returns:The RNA type or default when not found.
Return type:bpy.types.Struct subclass
classmethod bl_rna_get_subclass_py(id, default=None)
Parameters:id (string) – The RNA type identifier.
Returns:The class or default when not found.
Return type:type

Inherited Properties

Inherited Functions

References