user: How do I use Bpy.Types.Fcurve in Blender? Include parameters, examples, warnings and best practices.

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Note You are not using the most up to date version of the documentation. is the newest version. Back to top Toggle Light / Dark / Auto color theme Toggle table of contents sidebar 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 [0, inf], default 0 auto_smoothing ¶ Algorithm used to compute automatic handles Type : enum in Fcurve Auto Smoothing Items , default 'NONE' color ¶ Color of the F-Curve in the Graph Editor Type : mathutils.Color 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 WXYZ axis colors for quaternion/axis-angle rotations, XYZ axis colors for other transform and color properties, and auto-rainbow for the rest. 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_empty ¶ True if the curve contributes no animation due to lack of keyframes or useful modifiers, and should be deleted Type : boolean, default False, (readonly) 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 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 : mathutils.Vector 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 bake ( start , end , * , step = 1.0 , remove = 'IN_RANGE' ) ¶ Place keys at even intervals on the existing curve. Parameters : start ( int in [ -1048574 , 1048574 ] ) – Start Frame, Frame at which to start baking end ( int in [ -1048574 , 1048574 ] ) – End Frame, Frame at which to end baking (inclusive) step ( float in [ 0.01 , inf ] , ( optional ) ) – Step, At which interval to add keys remove (enum in [ 'NONE' , 'IN_RANGE' , 'OUT_RANGE' , 'ALL' ], (optional)) – Remove Options, Choose which keys should be automatically removed by the bake NONE None – Keep all keys. IN_RANGE In Range – Remove all keys within the defined range. OUT_RANGE Outside Range – Remove all keys outside the defined range. ALL All – Remove all existing keys. cla