Curve(ID)

base classes — bpy_struct, ID

subclasses — SurfaceCurve, TextCurve

class bpy.types.Curve(ID)

Curve data-block storing curves, splines and NURBS

animation_data

Animation data for this data-block

Type

AnimData, (readonly)

bevel_depth

Radius of the bevel geometry, not including extrusion

Type

float in [-inf, inf], default 0.0

bevel_factor_end

Define where along the spline the curve geometry ends (0 for the beginning, 1 for the end)

Type

float in [0, 1], default 1.0

bevel_factor_mapping_end

Determine how the geometry end factor is mapped to a spline

• RESOLUTION Resolution – Map the geometry factor to the number of subdivisions of a spline (U resolution).

• SEGMENTS Segments – Map the geometry factor to the length of a segment and to the number of subdivisions of a segment.

• SPLINE Spline – Map the geometry factor to the length of a spline.

Type

enum in [‘RESOLUTION’, ‘SEGMENTS’, ‘SPLINE’], default ‘RESOLUTION’

bevel_factor_mapping_start

Determine how the geometry start factor is mapped to a spline

• RESOLUTION Resolution – Map the geometry factor to the number of subdivisions of a spline (U resolution).

• SEGMENTS Segments – Map the geometry factor to the length of a segment and to the number of subdivisions of a segment.

• SPLINE Spline – Map the geometry factor to the length of a spline.

Type

enum in [‘RESOLUTION’, ‘SEGMENTS’, ‘SPLINE’], default ‘RESOLUTION’

bevel_factor_start

Define where along the spline the curve geometry starts (0 for the beginning, 1 for the end)

Type

float in [0, 1], default 0.0

bevel_mode

Determine how to build the curve’s bevel geometry

• ROUND Round – Use circle for the section of the curve’s bevel geometry.

• OBJECT Object – Use an object for the section of the curve’s bevel geometry segment.

• PROFILE Profile – Use a custom profile for each quarter of curve’s bevel geometry.

Type

enum in [‘ROUND’, ‘OBJECT’, ‘PROFILE’], default ‘ROUND’

bevel_object

The name of the Curve object that defines the bevel shape

Type

Object

bevel_profile

The path for the curve’s custom profile

Type

CurveProfile, (readonly)

bevel_resolution

The number of segments in each quarter-circle of the bevel

Type

int in [0, 32], default 4

cycles

Cycles mesh settings

Type

CyclesMeshSettings, (readonly)

dimensions

Select 2D or 3D curve type

• 2D 2D – Clamp the Z axis of the curve.

• 3D 3D – Allow editing on the Z axis of this curve, also allows tilt and curve radius to be used.

Type

enum in [‘2D’, ‘3D’], default ‘2D’

eval_time

Parametric position along the length of the curve that Objects ‘following’ it should be at (position is evaluated by dividing by the ‘Path Length’ value)

Type

float in [-inf, inf], default 0.0

extrude

Length of the depth added in the local Z direction along the curve, perpendicular to its normals

Type

float in [0, inf], default 0.0

fill_mode

Mode of filling curve

Type

enum in [‘FULL’, ‘BACK’, ‘FRONT’, ‘HALF’], default ‘FULL’

is_editmode

True when used in editmode

Type

boolean, default False, (readonly)

materials

Type

IDMaterials bpy_prop_collection of Material, (readonly)

offset

Distance to move the curve parallel to its normals

Type

float in [-inf, inf], default 0.0

path_duration

The number of frames that are needed to traverse the path, defining the maximum value for the ‘Evaluation Time’ setting

Type

int in [1, 1048574], default 100

render_resolution_u

Surface resolution in U direction used while rendering (zero uses preview resolution)

Type

int in [0, 1024], default 0

render_resolution_v

Surface resolution in V direction used while rendering (zero uses preview resolution)

Type

int in [0, 1024], default 0

resolution_u

Number of computed points in the U direction between every pair of control points

Type

int in [1, 1024], default 12

resolution_v

The number of computed points in the V direction between every pair of control points

Type

int in [1, 1024], default 12

shape_keys

Type

Key, (readonly)

splines

Collection of splines in this curve data object

Type

CurveSplines bpy_prop_collection of Spline, (readonly)

taper_object

Curve object name that defines the taper (width)

Type

Object

taper_radius_mode

Determine how the effective radius of the spline point is computed when a taper object is specified

• OVERRIDE Override – Override the radius of the spline point with the taper radius.

• MULTIPLY Multiply – Multiply the radius of the spline point by the taper radius.

• ADD Add – Add the radius of the bevel point to the taper radius.

Type

enum in [‘OVERRIDE’, ‘MULTIPLY’, ‘ADD’], default ‘OVERRIDE’

texspace_location

Type

mathutils.Vector of 3 items in [-inf, inf], default (0.0, 0.0, 0.0)

texspace_size

Type

mathutils.Vector of 3 items in [-inf, inf], default (1.0, 1.0, 1.0)

twist_mode

The type of tilt calculation for 3D Curves

• Z_UP Z-Up – Use Z-Up axis to calculate the curve twist at each point.

• MINIMUM Minimum – Use the least twist over the entire curve.

• TANGENT Tangent – Use the tangent to calculate twist.

Type

enum in [‘Z_UP’, ‘MINIMUM’, ‘TANGENT’], default ‘MINIMUM’

twist_smooth

Smoothing iteration for tangents

Type

float in [-inf, inf], default 0.0

use_auto_texspace

Adjust active object’s texture space automatically when transforming object

Type

boolean, default True

use_deform_bounds

Option for curve-deform: Use the mesh bounds to clamp the deformation

Type

boolean, default True

use_fill_caps

Fill caps for beveled curves

Type

boolean, default False

use_map_taper

Map effect of the taper object to the beveled part of the curve

Type

boolean, default False

use_path

Enable the curve to become a translation path

Type

boolean, default False

use_path_clamp

Clamp the curve path children so they can’t travel past the start/end point of the curve

Type

boolean, default False

use_path_follow

Make curve path children rotate along the path

Type

boolean, default False

use_radius

Option for paths and curve-deform: apply the curve radius to objects following it and to deformed objects

Type

boolean, default True

use_stretch

Option for curve-deform: make deformed child stretch along entire path

Type

boolean, default False

transform(matrix, shape_keys=False)

Transform curve by a matrix

Parameters

• matrix (mathutils.Matrix of 4 * 4 items in [-inf, inf]) – Matrix

• shape_keys (boolean, (optional)) – Transform Shape Keys

validate_material_indices()

Validate material indices of splines or letters, return True when the curve has had invalid indices corrected (to default 0)

Returns

Result

Return type

boolean

update_gpu_tag()

update_gpu_tag

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

bpy_struct.id_data ID.name ID.name_full ID.is_evaluated ID.original ID.users ID.use_fake_user ID.use_extra_user ID.is_embedded_data

ID.is_missing ID.is_runtime_data ID.tag ID.is_library_indirect ID.library ID.library_weak_reference ID.asset_data ID.override_library ID.preview

Inherited Functions

bpy_struct.as_pointer bpy_struct.driver_add bpy_struct.driver_remove bpy_struct.get bpy_struct.id_properties_clear bpy_struct.id_properties_ensure bpy_struct.id_properties_ui bpy_struct.is_property_hidden bpy_struct.is_property_overridable_library bpy_struct.is_property_readonly bpy_struct.is_property_set bpy_struct.items bpy_struct.keyframe_delete bpy_struct.keyframe_insert bpy_struct.keys bpy_struct.path_from_id bpy_struct.path_resolve bpy_struct.pop bpy_struct.property_overridable_library_set bpy_struct.property_unset

bpy_struct.type_recast bpy_struct.values ID.evaluated_get ID.copy ID.asset_mark ID.asset_clear ID.asset_generate_preview ID.override_create ID.override_hierarchy_create ID.override_template_create ID.user_clear ID.user_remap ID.make_local ID.user_of_id ID.animation_data_create ID.animation_data_clear ID.update_tag ID.preview_ensure ID.bl_rna_get_subclass ID.bl_rna_get_subclass_py

References

bpy.context.curve BlendData.curves BlendDataCurves.new

BlendDataCurves.remove Object.to_curve