Layout Types

A Layout represents and manages DXF entities, there are three different layout objects:

  • Modelspace is the common working space, containing basic drawing entities.

  • Paperspace is arrangement of objects for printing and plotting, this layout contains basic drawing entities and viewports to the Modelspace.

  • BlockLayout works on an associated Block, Blocks are collections of drawing entities for reusing by block references.

Warning

Do not instantiate layout classes by yourself - always use the provided factory functions!

Entity Ownership

A layout owns all entities residing in their entity space, this means the dxf.owner attribute of any DXFGraphic in this layout is the dxf.handle of the layout, and deleting an entity from a layout is the end of life of this entity, because it is also deleted from the EntityDB. But it is possible to just unlink an entity from a layout, so it can be assigned to another layout, use the move_to_layout() method to move entities between layouts.

BaseLayout

class ezdxf.layouts.BaseLayout

BaseLayout is the common base class for Layout and BlockLayout.

is_alive

False if layout is deleted.

is_active_paperspace

True if is active layout.

is_any_paperspace

True if is any kind of paperspace layout.

is_modelspace

True if is modelspace layout.

is_any_layout

True if is any kind of modelspace or paperspace layout.

is_block_layout

True if not any kind of modelspace or paperspace layout, just a regular block definition.

units

set drawing units.

Type

Get/Set layout/block drawing units as enum, see also

Type

ref

__len__() → int

Returns count of entities owned by the layout.

__iter__() → Iterable[DXFGraphic]

Returns iterable of all drawing entities in this layout.

__getitem__(index)

Get entity at index.

The underlying data structure for storing entities is organized like a standard Python list, therefore index can be any valid list indexing or slicing term, like a single index layout[-1] to get the last entity, or an index slice layout[:10] to get the first 10 or less entities as List[DXFGraphic].

get_extension_dict() → ExtensionDict

Returns the associated extension dictionary, creates a new one if necessary.

delete_entity(entity: DXFGraphic) → None

Delete entity from layout entity space and the entity database, this destroys the entity.

delete_all_entities() → None

Delete all entities from this layout and from entity database, this destroys all entities in this layout.

Unlink entity from layout but does not delete entity from the entity database, this removes entity just from the layout entity space.

query(query: str = '*') → EntityQuery

Get all DXF entities matching the Entity Query String.

groupby(dxfattrib: str = '', key: KeyFunc = None) → dict

Returns a dict of entity lists, where entities are grouped by a dxfattrib or a key function.

Parameters

  • dxfattrib – grouping by DXF attribute like 'layer'

  • key – key function, which accepts a DXFGraphic entity as argument and returns the grouping key of an entity or None to ignore the entity. Reason for ignoring: a queried DXF attribute is not supported by entity.

move_to_layout(entity: DXFGraphic, layout: BaseLayout) → None

Move entity to another layout.

Parameters

  • entity – DXF entity to move

  • layout – any layout (modelspace, paperspace, block) from same drawing

add_entity(entity: DXFGraphic) → None

Add an existing DXFGraphic entity to a layout, but be sure to unlink (unlink_entity()) entity from the previous owner layout. Adding entities from a different DXF drawing is not supported.

add_foreign_entity(entity: DXFGraphic, copy=True) → None

Add a foreign DXF entity to a layout, this foreign entity could be from another DXF document or an entity without an assigned DXF document. The intention of this method is to add simple entities from another DXF document or from a DXF iterator, for more complex operations use the importer add-on. Especially objects with BLOCK section (INSERT, DIMENSION, MLEADER) or OBJECTS section dependencies (IMAGE, UNDERLAY) can not be supported by this simple method.

Not all DXF types are supported and every dependency or resource reference from another DXF document will be removed except attribute layer will be preserved but only with default attributes like color 7 and linetype CONTINUOUS because the layer attribute doesn’t need a layer table entry.

If the entity is part of another DXF document, it will be unlinked from this document and its entity database if argument copy is False, else the entity will be copied. Unassigned entities like from DXF iterators will just be added.

Supported DXF types:

  • POINT

  • LINE

  • CIRCLE

  • ARC

  • ELLIPSE

  • LWPOLYLINE

  • SPLINE

  • POLYLINE

  • 3DFACE

  • SOLID

  • TRACE

  • SHAPE

  • MESH

  • ATTRIB

  • ATTDEF

  • TEXT

  • MTEXT

  • HATCH

Parameters

  • entity – DXF entity to copy or move

  • copy – if True copy entity from other document else unlink from other document

add_point(location: Vertex, dxfattribs: dict = None) → Point

Add a Point entity at location.

Parameters

  • location – 2D/3D point in WCS

  • dxfattribs – additional DXF attributes

add_line(start: Vertex, end: Vertex, dxfattribs: dict = None) → Line

Add a Line entity from start to end.

Parameters

  • start – 2D/3D point in WCS

  • end – 2D/3D point in WCS

  • dxfattribs – additional DXF attributes

add_circle(center: Vertex, radius: float, dxfattribs: dict = None) → Circle

Add a Circle entity. This is an 2D element, which can be placed in space by using OCS.

Parameters

  • center – 2D/3D point in WCS

  • radius – circle radius

  • dxfattribs – additional DXF attributes

add_ellipse(center: Vertex, major_axis: Vertex = (1, 0, 0), ratio: float = 1, start_param: float = 0, end_param: float = 6.283185307179586, dxfattribs: dict = None) → Ellipse

Add an Ellipse entity, ratio is the ratio of minor axis to major axis, start_param and end_param defines start and end point of the ellipse, a full ellipse goes from 0 to 2*pi. The ellipse goes from start to end param in counter clockwise direction.

Parameters

  • center – center of ellipse as 2D/3D point in WCS

  • major_axis – major axis as vector (x, y, z)

  • ratio – ratio of minor axis to major axis in range +/-[1e-6, 1.0]

  • start_param – start of ellipse curve

  • end_param – end param of ellipse curve

  • dxfattribs – additional DXF attributes

add_arc(center: Vertex, radius: float, start_angle: float, end_angle: float, is_counter_clockwise: bool = True, dxfattribs: dict = None) → Arc

Add an Arc entity. The arc goes from start_angle to end_angle in counter clockwise direction by default, set parameter is_counter_clockwise to False for clockwise orientation.

Parameters

  • center – center of arc as 2D/3D point in WCS

  • radius – arc radius

  • start_angle – start angle in degrees

  • end_angle – end angle in degrees

  • is_counter_clockwise – False for clockwise orientation

  • dxfattribs – additional DXF attributes

add_solid(points: Iterable[Vertex], dxfattribs: dict = None) → Solid

Add a Solid entity, points is an iterable of 3 or 4 points.

Parameters

  • points – iterable of 3 or 4 2D/3D points in WCS

  • dxfattribs – additional DXF attributes for Solid entity

add_trace(points: Iterable[Vertex], dxfattribs: dict = None) → Trace

Add a Trace entity, points is an iterable of 3 or 4 points.

Parameters

  • points – iterable of 3 or 4 2D/3D points in WCS

  • dxfattribs – additional DXF attributes for Trace entity

add_3dface(points: Iterable[Vertex], dxfattribs: dict = None) → Face3d

Add a 3DFace entity, points is an iterable 3 or 4 2D/3D points.

Parameters

  • points – iterable of 3 or 4 2D/3D points in WCS

  • dxfattribs – additional DXF attributes for 3DFace entity

add_text(text: str, dxfattribs: dict = None) → Text

Add a Text entity, see also Style.

Parameters

  • text – content string

  • dxfattribs – additional DXF attributes for Text entity

add_blockref(name: str, insert: Vertex, dxfattribs: dict = None) → Insert

Add an Insert entity.

Parameters

  • name – block name as str

  • insert – insert location as 2D/3D point in WCS

  • dxfattribs – additional DXF attributes for Insert entity

add_auto_blockref(name: str, insert: Vertex, values: Dict[str, str], dxfattribs: dict = None) → Insert

Add an Insert entity. This method adds for each Attdef entity, defined in the block definition, automatically an Attrib entity to the block reference and set tag/value DXF attributes of the ATTRIB entities by the key/value pairs (both as strings) of the values dict.

The Attrib entities are placed relative to the insert point, which is equal to the block base point.

This method wraps the INSERT and all the ATTRIB entities into an anonymous block, which produces the best visual results, especially for non uniform scaled block references, because the transformation and scaling is done by the CAD application. But this makes evaluation of block references with attributes more complicated, if you prefer INSERT and ATTRIB entities without a wrapper block use the add_blockref_with_attribs() method.

Parameters

  • name – block name

  • insert – insert location as 2D/3D point in WCS

  • values – Attrib tag values as tag/value pairs

  • dxfattribs – additional DXF attributes for Insert entity

add_attrib(tag: str, text: str, insert: Vertex = (0, 0), dxfattribs: dict = None) → Attrib

Add an Attrib as stand alone DXF entity.

Parameters

  • tag – tag name as string

  • text – tag value as string

  • insert – insert location as 2D/3D point in WCS

  • dxfattribs – additional DXF attributes for Attrib entity

add_attdef(tag: str, insert: Vertex = (0, 0), text: str = '', dxfattribs: dict = None) → AttDef

Add an AttDef as stand alone DXF entity.

Set position and alignment by the idiom:

layout.add_attdef('NAME').set_pos((2, 3), align='MIDDLE_CENTER')
Parameters

  • tag – tag name as string

  • insert – insert location as 2D/3D point in WCS

  • text – tag value as string

  • dxfattribs – additional DXF attributes

add_polyline2d(points: Iterable[Vertex], dxfattribs: dict = None, format: str = None) → Polyline

Add a 2D Polyline entity.

Parameters

  • points – iterable of 2D points in WCS

  • dxfattribs – additional DXF attributes

  • format – user defined point format like add_lwpolyline(), default is None

New in version 0.11: user defined point format

add_polyline3d(points: Iterable[Vertex], dxfattribs: dict = None) → Polyline

Add a 3D Polyline entity.

Parameters

  • points – iterable of 3D points in WCS

  • dxfattribs – additional DXF attributes

add_polymesh(size: Tuple[int, int] = (3, 3), dxfattribs: dict = None) → Polymesh

Add a Polymesh entity, which is a wrapper class for the POLYLINE entity. A polymesh is a grid of mcount x ncount vertices and every vertex has its own (x, y, z)-coordinates.

Parameters

  • size – 2-tuple (mcount, ncount)

  • dxfattribs – additional DXF attributes for Polyline entity

add_polyface(dxfattribs: dict = None) → Polyface

Add a Polyface entity, which is a wrapper class for the POLYLINE entity.

Parameters

dxfattribs – additional DXF attributes for Polyline entity

add_shape(name: str, insert: Vertex = (0, 0), size: float = 1.0, dxfattribs: dict = None) → Shape

Add a Shape reference to a external stored shape.

Parameters

  • name – shape name as string

  • insert – insert location as 2D/3D point in WCS

  • size – size factor

  • dxfattribs – additional DXF attributes

add_lwpolyline(points: Iterable[Vertex], format: str = 'xyseb', dxfattribs: dict = None) → LWPolyline

Add a 2D polyline as LWPolyline entity. A points are defined as (x, y, [start_width, [end_width, [bulge]]]) tuples, but order can be redefined by the format argument. Set start_width, end_width to 0 to be ignored like (x, y, 0, 0, bulge).

The LWPolyline is defined as a single DXF entity and needs less disk space than a Polyline entity. (requires DXF R2000)

Format codes:

  • x = x-coordinate

  • y = y-coordinate

  • s = start width

  • e = end width

  • b = bulge value

  • v = (x, y [,z]) tuple (z-axis is ignored)

Parameters

  • points – iterable of (x, y, [start_width, [end_width, [bulge]]]) tuples

  • format – user defined point format, default is "xyseb"

  • dxfattribs – additional DXF attributes

add_mtext(text: str, dxfattribs: dict = None) → MText

Add a multiline text entity with automatic text wrapping at boundaries as MText entity. (requires DXF R2000)

Parameters

  • text – content string

  • dxfattribs – additional DXF attributes

add_ray(start: Vertex, unit_vector: Vertex, dxfattribs: dict = None) → Ray

Add a Ray that begins at start point and continues to infinity (construction line). (requires DXF R2000)

Parameters

  • start – location 3D point in WCS

  • unit_vector – 3D vector (x, y, z)

  • dxfattribs – additional DXF attributes

add_xline(start: Vertex, unit_vector: Vertex, dxfattribs: dict = None) → XLine

Add an infinity XLine (construction line). (requires DXF R2000)

Parameters

  • start – location 3D point in WCS

  • unit_vector – 3D vector (x, y, z)

  • dxfattribs – additional DXF attributes

add_spline(fit_points: Iterable[Vertex] = None, degree: int = 3, dxfattribs: dict = None) → Spline

Add a B-spline (Spline entity) defined by fit points - the control points and knot values are created by the CAD application, therefore it is not predictable how the rendered spline will look like, because for every set of fit points exists an infinite set of B-splines. If fit_points is None, an ‘empty’ spline will be created, all data has to be set by the user. (requires DXF R2000)

AutoCAD creates a spline through fit points by a proprietary algorithm. ezdxf can not reproduce the control point calculation. See also: Tutorial for Spline.

Parameters

  • fit_points – iterable of fit points as (x, y[, z]) in WCS, create ‘empty’ Spline if None

  • degree – degree of B-spline

  • dxfattribs – additional DXF attributes

add_spline_control_frame(fit_points: Iterable[Vertex], degree: int = 3, method: str = 'chord', dxfattribs: dict = None) → Spline

Add a Spline entity passing through given fit points by global B-spline interpolation, the new SPLINE entity is defined by a control frame and not by the fit points.

  • “uniform”: creates a uniform t vector, from 0 to 1 evenly spaced, see uniform method

  • “distance”, “chord”: creates a t vector with values proportional to the fit point distances, see chord length method

  • “centripetal”, “sqrt_chord”: creates a t vector with values proportional to the fit point sqrt(distances), see centripetal method

  • “arc”: creates a t vector with values proportional to the arc length between fit points.

Parameters

  • fit_points – iterable of fit points as (x, y[, z]) in WCS

  • degree – degree of B-spline

  • method – calculation method for parameter vector t

  • dxfattribs – additional DXF attributes

add_open_spline(control_points: Iterable[Vertex], degree: int = 3, knots: Iterable[float] = None, dxfattribs: dict = None) → Spline

Add an open uniform Spline defined by control_points. (requires DXF R2000)

Open uniform B-splines start and end at your first and last control point.

Parameters

  • control_points – iterable of 3D points in WCS

  • degree – degree of B-spline

  • knots – knot values as iterable of floats

  • dxfattribs – additional DXF attributes

add_closed_spline(control_points: Iterable[Vertex], degree: int = 3, knots: Iterable[float] = None, dxfattribs: dict = None) → Spline

Add a closed uniform Spline defined by control_points. (requires DXF R2000)

Closed uniform B-splines is a closed curve start and end at the first control point.

Parameters

  • control_points – iterable of 3D points in WCS

  • degree – degree of B-spline

  • knots – knot values as iterable of floats

  • dxfattribs – additional DXF attributes

add_rational_spline(control_points: Iterable[Vertex], weights: Sequence[float], degree: int = 3, knots: Iterable[float] = None, dxfattribs: dict = None) → Spline

Add an open rational uniform Spline defined by control_points. (requires DXF R2000)

weights has to be an iterable of floats, which defines the influence of the associated control point to the shape of the B-spline, therefore for each control point is one weight value required.

Open rational uniform B-splines start and end at the first and last control point.

Parameters

  • control_points – iterable of 3D points in WCS

  • weights – weight values as iterable of floats

  • degree – degree of B-spline

  • knots – knot values as iterable of floats

  • dxfattribs – additional DXF attributes

add_closed_rational_spline(control_points: Iterable[Vertex], weights: Sequence[float], degree: int = 3, knots: Iterable[float] = None, dxfattribs: dict = None) → Spline

Add a closed rational uniform Spline defined by control_points. (requires DXF R2000)

weights has to be an iterable of floats, which defines the influence of the associated control point to the shape of the B-spline, therefore for each control point is one weight value required.

Closed rational uniform B-splines start and end at the first control point.

Parameters

  • control_points – iterable of 3D points in WCS

  • weights – weight values as iterable of floats

  • degree – degree of B-spline

  • knots – knot values as iterable of floats

  • dxfattribs – additional DXF attributes

add_hatch(color: int = 7, dxfattribs: dict = None) → Hatch

Add a Hatch entity. (requires DXF R2007)

Parameters

  • color – ACI (AutoCAD Color Index), default is 7 (black/white).

  • dxfattribs – additional DXF attributes

add_mesh(dxfattribs: dict = None) → Mesh

Add a Mesh entity. (requires DXF R2007)

Parameters

dxfattribs – additional DXF attributes

add_image(image_def: ImageDef, insert: Vertex, size_in_units: Tuple[float, float], rotation: float = 0.0, dxfattribs: dict = None) → Image

Add an Image entity, requires a ImageDef entity, see Tutorial for Image and ImageDef. (requires DXF R2000)

Parameters

  • image_def – required image definition as ImageDef

  • insert – insertion point as 3D point in WCS

  • size_in_units – size as (x, y) tuple in drawing units

  • rotation – rotation angle around the extrusion axis, default is the z-axis, in degrees

  • dxfattribs – additional DXF attributes

add_wipeout(vertices: Iterable[Vertex], dxfattribs: dict = None) → Wipeout

Add a ezdxf.entities.Wipeout entity, the masking area is defined by WCS vertices.

This method creates only a 2D entity in the xy-plane of the layout, the z-axis of the input vertices are ignored.

add_underlay(underlay_def: UnderlayDef, insert: Vertex = (0, 0, 0), scale=(1, 1, 1), rotation: float = 0.0, dxfattribs: dict = None) → Underlay

Add an Underlay entity, requires a UnderlayDef entity, see Tutorial for Underlay and UnderlayDefinition. (requires DXF R2000)

Parameters

  • underlay_def – required underlay definition as UnderlayDef

  • insert – insertion point as 3D point in WCS

  • scale – underlay scaling factor as (x, y, z) tuple or as single value for uniform scaling for x, y and z

  • rotation – rotation angle around the extrusion axis, default is the z-axis, in degrees

  • dxfattribs – additional DXF attributes

add_linear_dim(base: Vertex, p1: Vertex, p2: Vertex, location: Vertex = None, text: str = '<>', angle: float = 0, text_rotation: float = None, dimstyle: str = 'EZDXF', override: dict = None, dxfattribs: dict = None) → DimStyleOverride

Add horizontal, vertical and rotated Dimension line. If an UCS is used for dimension line rendering, all point definitions in UCS coordinates, translation into WCS and OCS is done by the rendering function. Extrusion vector is defined by UCS or (0, 0, 1) by default. See also: Tutorial for Linear Dimensions

This method returns a DimStyleOverride object - to create the necessary dimension geometry, you have to call render() manually, this two step process allows additional processing steps on the Dimension entity between creation and rendering.

Note

ezdxf ignores some DIMSTYLE variables, so render results may differ from BricsCAD or AutoCAD.

Parameters

  • base – location of dimension line, any point on the dimension line or its extension will do (in UCS)

  • p1 – measurement point 1 and start point of extension line 1 (in UCS)

  • p2 – measurement point 2 and start point of extension line 2 (in UCS)

  • location – user defined location for text mid point (in UCS)

  • text – None or "<>" the measurement is drawn as text, " " (one space) suppresses the dimension text, everything else text is drawn as dimension text

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZDXF'

  • angle – angle from ucs/wcs x-axis to dimension line in degrees

  • text_rotation – rotation angle of the dimension text as absolute angle (x-axis=0, y-axis=90) in degrees

  • override – DimStyleOverride attributes

  • dxfattribs – additional DXF attributes for Dimension entity

Returns: DimStyleOverride

add_multi_point_linear_dim(base: Vertex, points: Iterable[Vertex], angle: float = 0, ucs: UCS = None, avoid_double_rendering: bool = True, dimstyle: str = 'EZDXF', override: dict = None, dxfattribs: dict = None, discard=False) → None

Add multiple linear dimensions for iterable points. If an UCS is used for dimension line rendering, all point definitions in UCS coordinates, translation into WCS and OCS is done by the rendering function. Extrusion vector is defined by UCS or (0, 0, 1) by default. See also: Tutorial for Linear Dimensions

This method sets many design decisions by itself, the necessary geometry will be generated automatically, no required nor possible render() call. This method is easy to use but you get what you get.

Note

ezdxf ignores some DIMSTYLE variables, so render results may differ from BricsCAD or AutoCAD.

Parameters

  • base – location of dimension line, any point on the dimension line or its extension will do (in UCS)

  • points – iterable of measurement points (in UCS)

  • angle – angle from ucs/wcs x-axis to dimension line in degrees (0 = horizontal, 90 = vertical)

  • ucs – user defined coordinate system

  • avoid_double_rendering – suppresses the first extension line and the first arrow if possible for continued dimension entities

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZDXF'

  • override – DimStyleOverride attributes

  • dxfattribs – additional DXF attributes for Dimension entity

  • discard – discard rendering result for friendly CAD applications like BricsCAD to get a native and likely better rendering result. (does not work with AutoCAD)

add_aligned_dim(p1: Vertex, p2: Vertex, distance: float, text: str = '<>', dimstyle: str = 'EZDXF', override: dict = None, dxfattribs: dict = None) → DimStyleOverride

Add linear dimension aligned with measurement points p1 and p2. If an UCS is used for dimension line rendering, all point definitions in UCS coordinates, translation into WCS and OCS is done by the rendering function. Extrusion vector is defined by UCS or (0, 0, 1) by default. See also: Tutorial for Linear Dimensions

This method returns a DimStyleOverride object, to create the necessary dimension geometry, you have to call DimStyleOverride.render() manually, this two step process allows additional processing steps on the Dimension entity between creation and rendering.

Note

ezdxf ignores some DIMSTYLE variables, so render results may differ from BricsCAD or AutoCAD.

Parameters

  • p1 – measurement point 1 and start point of extension line 1 (in UCS)

  • p2 – measurement point 2 and start point of extension line 2 (in UCS)

  • distance – distance of dimension line from measurement points

  • text – None or “<>” the measurement is drawn as text, ” ” (one space) suppresses the dimension text, everything else text is drawn as dimension text

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZDXF'

  • override – DimStyleOverride attributes

  • dxfattribs – DXF attributes for Dimension entity

Returns: DimStyleOverride

add_radius_dim(center: Vertex, mpoint: Vertex = None, radius: float = None, angle: float = None, location: Vertex = None, text: str = '<>', dimstyle: str = 'EZ_RADIUS', override: dict = None, dxfattribs: dict = None) → DimStyleOverride

Add a radius Dimension line. The radius dimension line requires a center point and a point mpoint on the circle or as an alternative a radius and a dimension line angle in degrees. See also: Tutorial for Radius Dimensions

If an UCS is used for dimension line rendering, all point definitions in UCS coordinates, translation into WCS and OCS is done by the rendering function. Extrusion vector is defined by UCS or (0, 0, 1) by default.

This method returns a DimStyleOverride object - to create the necessary dimension geometry, you have to call render() manually, this two step process allows additional processing steps on the Dimension entity between creation and rendering.

Following render types are supported:

  • Default text location outside: text aligned with dimension line; dimension style: 'EZ_RADIUS'

  • Default text location outside horizontal: 'EZ_RADIUS' + dimtoh=1

  • Default text location inside: text aligned with dimension line; dimension style: 'EZ_RADIUS_INSIDE'

  • Default text location inside horizontal:'EZ_RADIUS_INSIDE' + dimtih=1

  • User defined text location: argument location != None, text aligned with dimension line; dimension style: 'EZ_RADIUS'

  • User defined text location horizontal: argument location != None, 'EZ_RADIUS' + dimtoh=1 for text outside horizontal, 'EZ_RADIUS' + dimtih=1 for text inside horizontal

Placing the dimension text at a user defined location, overrides the mpoint and the angle argument, but requires a given radius argument. The location argument does not define the exact text location, instead it defines the dimension line starting at center and the measurement text midpoint projected on this dimension line going through location, if text is aligned to the dimension line. If text is horizontal, location is the kink point of the dimension line from radial to horizontal direction.

Note

ezdxf ignores some DIMSTYLE variables, so render results may differ from BricsCAD or AutoCAD.

Parameters

  • center – center point of the circle (in UCS)

  • mpoint – measurement point on the circle, overrides angle and radius (in UCS)

  • radius – radius in drawing units, requires argument angle

  • angle – specify angle of dimension line in degrees, requires argument radius

  • location – user defined dimension text location, overrides mpoint and angle, but requires radius (in UCS)

  • text – None or "<>" the measurement is drawn as text, " " (one space) suppresses the dimension text, everything else text is drawn as dimension text

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZ_RADIUS'

  • override – DimStyleOverride attributes

  • dxfattribs – additional DXF attributes for Dimension entity

Returns: DimStyleOverride

add_radius_dim_2p(center: Vertex, mpoint: Vertex, text: str = '<>', dimstyle: str = 'EZ_RADIUS', override: dict = None, dxfattribs: dict = None) → DimStyleOverride

Shortcut method to create a radius dimension by center point, measurement point on the circle and the measurement text at the default location defined by the associated dimstyle, for further information see general method add_radius_dim().

  • dimstyle 'EZ_RADIUS': places the dimension text outside

  • dimstyle 'EZ_RADIUS_INSIDE': places the dimension text inside

Parameters

  • center – center point of the circle (in UCS)

  • mpoint – measurement point on the circle (in UCS)

  • text – None or "<>" the measurement is drawn as text, " " (one space) suppresses the dimension text, everything else text is drawn as dimension text

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZ_RADIUS'

  • override – DimStyleOverride attributes

  • dxfattribs – additional DXF attributes for Dimension entity

Returns: DimStyleOverride

add_radius_dim_cra(center: Vertex, radius: float, angle: float, text: str = '<>', dimstyle: str = 'EZ_RADIUS', override: dict = None, dxfattribs: dict = None) → DimStyleOverride

Shortcut method to create a radius dimension by (c)enter point, (r)adius and (a)ngle, the measurement text is placed at the default location defined by the associated dimstyle, for further information see general method add_radius_dim().

  • dimstyle 'EZ_RADIUS': places the dimension text outside

  • dimstyle 'EZ_RADIUS_INSIDE': places the dimension text inside

Parameters

  • center – center point of the circle (in UCS)

  • radius – radius in drawing units

  • angle – angle of dimension line in degrees

  • text – None or "<>" the measurement is drawn as text, " " (one space) suppresses the dimension text, everything else text is drawn as dimension text

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZ_RADIUS'

  • override – DimStyleOverride attributes

  • dxfattribs – additional DXF attributes for Dimension entity

Returns: DimStyleOverride

add_diameter_dim(center: Vertex, mpoint: Vertex = None, radius: float = None, angle: float = None, location: Vertex = None, text: str = '<>', dimstyle: str = 'EZ_RADIUS', override: dict = None, dxfattribs: dict = None) → DimStyleOverride

Add a diameter Dimension line. The diameter dimension line requires a center point and a point mpoint on the circle or as an alternative a radius and a dimension line angle in degrees.

If an UCS is used for dimension line rendering, all point definitions in UCS coordinates, translation into WCS and OCS is done by the rendering function. Extrusion vector is defined by UCS or (0, 0, 1) by default.

This method returns a DimStyleOverride object - to create the necessary dimension geometry, you have to call render() manually, this two step process allows additional processing steps on the Dimension entity between creation and rendering.

Note

ezdxf ignores some DIMSTYLE variables, so render results may differ from BricsCAD or AutoCAD.

Parameters

  • center – specifies the center of the circle (in UCS)

  • mpoint – specifies the measurement point on the circle (in UCS)

  • radius – specify radius, requires argument angle, overrides p1 argument

  • angle – specify angle of dimension line in degrees, requires argument radius, overrides p1 argument

  • location – user defined location for text mid point (in UCS)

  • text – None or "<>" the measurement is drawn as text, " " (one space) suppresses the dimension text, everything else text is drawn as dimension text

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZ_RADIUS'

  • override – DimStyleOverride attributes

  • dxfattribs – additional DXF attributes for Dimension entity

Returns: DimStyleOverride

(not implemented yet!)

add_diameter_dim_2p(p1: Vertex, p2: Vertex, text: str = '<>', dimstyle: str = 'EZ_RADIUS', override: dict = None, dxfattribs: dict = None) → DimStyleOverride

Shortcut method to create a diameter dimension by two points on the circle and the measurement text at the default location defined by the associated dimstyle, for further information see general method add_diameter_dim(). Center point of the virtual circle is the mid point between p1 and p2.

  • dimstyle 'EZ_RADIUS': places the dimension text outside

  • dimstyle 'EZ_RADIUS_INSIDE': places the dimension text inside

Parameters

  • p1 – first point of the circle (in UCS)

  • p2 – second point on the opposite side of the center point of the circle (in UCS)

  • text – None or "<>" the measurement is drawn as text, " " (one space) suppresses the dimension text, everything else text is drawn as dimension text

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZ_RADIUS'

  • override – DimStyleOverride attributes

  • dxfattribs – additional DXF attributes for Dimension entity

Returns: DimStyleOverride

add_leader(vertices: Iterable[Vertex], dimstyle: str = 'EZDXF', override: dict = None, dxfattribs: dict = None) → Leader

The Leader entity represents an arrow, made up of one or more vertices (or spline fit points) and an arrowhead. The label or other content to which the Leader is attached is stored as a separate entity, and is not part of the Leader itself. (requires DXF R2000)

Leader shares its styling infrastructure with Dimension.

By default a Leader without any annotation is created. For creating more fancy leaders and annotations see documentation provided by Autodesk or Demystifying DXF: LEADER and MULTILEADER implementation notes .

Parameters

  • vertices – leader vertices (in WCS)

  • dimstyle – dimension style name (DimStyle table entry), default is 'EZDXF'

  • override – override DimStyleOverride attributes

  • dxfattribs – additional DXF attributes for Leader entity

add_body(acis_data: str = None, dxfattribs: dict = None) → Body

Add a Body entity. (requires DXF R2000)

Parameters

  • acis_data – ACIS data as iterable of text lines as strings, no interpretation by ezdxf possible

  • dxfattribs – additional DXF attributes

add_region(acis_data: str = None, dxfattribs: dict = None) → Region

Add a Region entity. (requires DXF R2000)

Parameters

  • acis_data – ACIS data as iterable of text lines as strings, no interpretation by ezdxf possible

  • dxfattribs – additional DXF attributes

add_3dsolid(acis_data: str = None, dxfattribs: dict = None) → Solid3d

Add a 3DSOLID entity (Solid3d). (requires DXF R2000)

Parameters

  • acis_data – ACIS data as iterable of text lines as strings, no interpretation by ezdxf possible

  • dxfattribs – additional DXF attributes

add_surface(acis_data: str = None, dxfattribs: dict = None) → Surface

Add a Surface entity. (requires DXF R2007)

Parameters

  • acis_data – ACIS data as iterable of text lines as strings, no interpretation by ezdxf possible

  • dxfattribs – additional DXF attributes

add_extruded_surface(acis_data: str = None, dxfattribs: dict = None) → ExtrudedSurface

Add a ExtrudedSurface entity. (requires DXF R2007)

Parameters

  • acis_data – ACIS data as iterable of text lines as strings, no interpretation by ezdxf possible

  • dxfattribs – additional DXF attributes

add_lofted_surface(acis_data: str = None, dxfattribs: dict = None) → LoftedSurface

Add a LoftedSurface entity. (requires DXF R2007)

Parameters

  • acis_data – ACIS data as iterable of text lines as strings, no interpretation by ezdxf possible

  • dxfattribs – additional DXF attributes

add_revolved_surface(acis_data: str = None, dxfattribs: dict = None) → RevolvedSurface

Add a RevolvedSurface entity. (requires DXF R2007)

Parameters

  • acis_data – ACIS data as iterable of text lines as strings, no interpretation by ezdxf possible

  • dxfattribs – additional DXF attributes

add_swept_surface(acis_data: str = None, dxfattribs: dict = None) → SweptSurface

Add a SweptSurface entity. (requires DXF R2007)

Parameters

  • acis_data – ACIS data as iterable of text lines as strings, no interpretation by ezdxf possible

  • dxfattribs – additional DXF attributes

Layout

class ezdxf.layouts.Layout

Layout is a subclass of BaseLayout and common base class of Modelspace and Paperspace.

name

Layout name as shown in tabs of CAD applications.

dxf

Returns the DXF name space attribute of the associated DXFLayout object.

This enables direct access to the underlying LAYOUT entity, e.g. Layout.dxf.layout_flags

__contains__(entity: Union[DXFGraphic, str]) → bool

Returns True if entity is stored in this layout.

Parameters

entity – DXFGraphic object or handle as hex string

reset_extends() → None

Reset extends.

set_plot_type(value: int = 5) → None

0

last screen display

1

drawing extents

2

drawing limits

3

view specific (defined by Layout.dxf.plot_view_name)

4

window specific (defined by Layout.set_plot_window_limits())

5

layout information (default)
Parameters

value – plot type

Raises

DXFValueError – for value out of range

set_plot_style(name: str = 'ezdxf.ctb', show: bool = False) → None

Set plot style file of type .ctb.

Parameters

  • name – plot style filename

  • show – show plot style effect in preview? (AutoCAD specific attribute)

set_plot_window(lower_left: Tuple[float, float] = (0, 0), upper_right: Tuple[float, float] = (0, 0)) → None

Set plot window size in (scaled) paper space units.

Parameters

  • lower_left – lower left corner as 2D point

  • upper_right – upper right corner as 2D point

set_redraw_order(handles: Union[Dict, Iterable[Tuple[str, str]]]) → None

If the header variable $SORTENTS Regen flag (bit-code value 16) is set, AutoCAD regenerates entities in ascending handles order.

To change redraw order associate a different sort handle to entities, this redefines the order in which the entities are regenerated. handles can be a dict of entity_handle and sort_handle as (k, v) pairs, or an iterable of (entity_handle, sort_handle) tuples.

The sort_handle doesn’t have to be unique, some or all entities can share the same sort handle and a sort handle can be an existing handle.

The “0” handle can be used, but this sort_handle will be drawn as latest (on top of all other entities) and not as first as expected.

Parameters

handles – iterable or dict of handle associations; an iterable of 2-tuples (entity_handle, sort_handle) or a dict (k, v) association as (entity_handle, sort_handle)

get_redraw_order() → Iterable[Tuple[str, str]]

Returns iterable for all existing table entries as (entity_handle, sort_handle) pairs, see also set_redraw_order().

plot_viewport_borders(state: bool = True) → None
show_plot_styles(state: bool = True) → None
plot_centered(state: bool = True) → None
plot_hidden(state: bool = True) → None
use_standard_scale(state: bool = True) → None
use_plot_styles(state: bool = True) → None
scale_lineweights(state: bool = True) → None
print_lineweights(state: bool = True) → None
draw_viewports_first(state: bool = True) → None
model_type(state: bool = True) → None
update_paper(state: bool = True) → None
zoom_to_paper_on_update(state: bool = True) → None
plot_flags_initializing(state: bool = True) → None
prev_plot_init(state: bool = True) → None
set_plot_flags(flag, state: bool = True) → None

Modelspace

class ezdxf.layouts.Modelspace

Modelspace is a subclass of Layout.

The modelspace contains the “real” world representation of the drawing subjects in real world units.

name

Name of modelspace is fixed as “Model”.

new_geodata(dxfattribs: dict = None) → GeoData

Creates a new GeoData entity and replaces existing ones. The GEODATA entity resides in the OBJECTS section and not in the modelspace, it is linked to the modelspace by an ExtensionDict located in BLOCK_RECORD of the modelspace.

The GEODATA entity requires DXF R2010. The DXF reference does not document if other layouts than the modelspace supports geo referencing, so I assume getting/setting geo data may only make sense for the modelspace.

Parameters

dxfattribs – DXF attributes for GeoData entity

get_geodata() → Optional[GeoData]

Returns the GeoData entity associated to the modelspace or None.

Paperspace

class ezdxf.layouts.Paperspace

Paperspace is a subclass of Layout.

Paperspace layouts are used to create different drawing sheets of the modelspace subjects for printing or PDF export.

name

Layout name as shown in tabs of CAD applications.

page_setup(size=(297, 210), margins=(10, 15, 10, 15), units='mm', offset=(0, 0), rotation=0, scale=16, name='ezdxf', device='DWG to PDF.pc3')

Setup plot settings and paper size and reset viewports. All parameters in given units (mm or inch).

Reset paper limits, extends and viewports.

Parameters

  • size – paper size as (width, height) tuple

  • margins – (top, right, bottom, left) hint: clockwise

  • units – “mm” or “inch”

  • offset – plot origin offset is 2D point

  • rotation – see table Rotation

  • scale – integer in range [0, 32] defines a standard scale type or as tuple(numerator, denominator) e.g. (1, 50) for scale 1:50

  • name – paper name prefix “{name}_({width}_x_{height}_{unit})”

  • device – device .pc3 configuration file or system printer name

int

Rotation

0

no rotation

1

90 degrees counter-clockwise

2

upside-down

3

90 degrees clockwise
rename(name: str) → None

Rename layout to name, changes the name displayed in tabs by CAD applications, not the internal BLOCK name.

viewports() → List[DXFGraphic]

Get all VIEWPORT entities defined in the paperspace layout. Returns a list of Viewport objects, sorted by id, the first entity is always the paperspace view with an id of 1.

add_viewport(center: Vertex, size: Tuple[float, float], view_center_point: Vertex, view_height: float, dxfattribs: dict = None) → Viewport

Add a new Viewport entity.

reset_viewports() → None

Delete all existing viewports, and add a new main viewport.

reset_paper_limits() → None

Set paper limits to default values, all values in paperspace units but without plot scale (?).

get_paper_limits() → Tuple[Tuple[float, float], Tuple[float, float]]

Returns paper limits in plot paper units, relative to the plot origin.

plot origin = lower left corner of printable area + plot origin offset

Returns

tuple ((x1, y1), (x2, y2)), lower left corner is (x1, y1), upper right corner is (x2, y2).

BlockLayout

class ezdxf.layouts.BlockLayout

BlockLayout is a subclass of BaseLayout.

Block layouts are reusable sets of graphical entities, which can be referenced by multiple Insert entities. Each reference can be placed, scaled and rotated individually and can have it’s own set of DXF Attrib entities attached.

name

name of the associated BLOCK and BLOCK_RECORD entities.

block

the associated Block entity.

endblk

the associated EndBlk entity.

dxf

DXF name space of associated BlockRecord table entry.

can_explode

Set property to True to allow exploding block references of this block.

scale_uniformly

Set property to True to allow block references of this block only scale uniformly.

__contains__(entity: Union[DXFGraphic, str]) → bool

Returns True if block contains entity.

Parameters

entity – DXFGraphic object or handle as hex string

attdefs() → Iterable[AttDef]

Returns iterable of all Attdef entities.

has_attdef(tag: str) → bool

Returns True if an Attdef for tag exist.

get_attdef(tag: str) → Optional[DXFGraphic]

Returns attached Attdef entity by tag name.

get_attdef_text(tag: str, default: str = None) → str

Returns text content for Attdef tag as string or returns default if no Attdef for tag exist.

Parameters

  • tag – name of tag

  • default – default value if tag not exist