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Sketch
Stephen S. Mitchell edited this page Apr 25, 2026
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Namespace: AlibreScript.API | Kind: Class
The Sketch class provides functionality for 2D sketching operations including creating geometric figures, applying constraints, and managing sketch elements.
- Sketch3D - 3D sketching operations
- Sketch.Constraints - Sketch constraint management
- SketchPoint - 2D sketch points
- Line, Circle, CircularArc - Sketch geometry
- Part - Contains sketches
- Properties - Sketch properties
- Methods - All available operations
- Arc Methods - Circular arc operations
- Line Methods - Line creation and manipulation
- Circle Methods - Circle operations
- Constraint Methods - Apply sketch constraints
Type: Object
A list of figures (line, circle, circulararc, bspline, ellipse, elliptical arc) defined on the sketch
Type: Object
Name of the sketch
Type: Object
The point that defines the origin
Adds a circular arc to the sketch
def AddArc(new_arc):
"""
Adds a circular arc to the sketch
Args:
new_arc (CircularArc): Arc to add
Returns:
The added circular arc
"""Adds a circular arc using center, start and angle Arc goes anti-clockwise from start
def AddArcCenterStartAngle(center_x, center_y, start_x, start_y, angle, is_reference):
"""
Adds a circular arc using center, start and angle Arc goes anti-clockwise from start
Args:
center_x (float): X coordinate for center
center_y (float): Y coordinate for center
start_x (float): X coordinate for start
start_y (float): Y coordinate for start
angle (float): Arc angle in degrees
is_reference (bool): True if arc is a reference figure
Returns:
The added circular arc
"""Adds a circular arc using three points - center, start and end Arc goes anti-clockwise from start to end
def AddArcCenterStartEnd(center_x, center_y, start_x, start_y, end_x, end_y, is_reference):
"""
Adds a circular arc using three points - center, start and end Arc goes anti-clockwise from start to end
Args:
center_x (float): X coordinate for center
center_y (float): Y coordinate for center
start_x (float): X coordinate for start
start_y (float): Y coordinate for start
end_x (float): X coordinate for end
end_y (float): Y cordinate for end
is_reference (bool): True if arc is a reference figure
Returns:
The added circular arc
"""Adds a Bspline to the sketch
Overload 1:
def AddBspline(order, control_points, knot_vectors, weights, is_reference):
"""
Adds a Bspline to the sketch
Args:
order (int): Order of the Bspline (Degree - 1)
control_points (list): List of control points
knot_vectors (list): List of knot vectors
weights (list): List of control point weights
is_reference (bool): True to create a reference bspline
Returns:
The created Bspline
"""Overload 2:
def AddBspline(points, is_reference):
"""
Adds a Bspline to the sketch through a set of points
Args:
points (list): List of points
is_reference (bool): True to create a reference bspline
Returns:
The created Bspline
"""Overload 3:
def AddBspline(new_bspline):
"""
Adds a new bspline to the sketch
Args:
new_bspline (Bspline): Bspline to add to the sketch
Returns:
The added Bspline
"""Adds a circle to the sketch
Overload 1:
def AddCircle(center_x, center_y, diameter, is_reference):
"""
Adds a circle to the sketch
Args:
center_x (float): X coordinate of circle center
center_y (float): Y coordinate of circle center
diameter (float): Circle diameter
is_reference (bool): True to create a reference circle
Returns:
A circle object
"""Overload 2:
def AddCircle(new_circle):
"""
Adds a circle to the sketch
Args:
new_circle (Circle): Circle to add to sketch
Returns:
The added circle
"""Adds a constraint to the sketch
Overload 1:
def AddConstraint(figure, constraint):
"""
Adds a constraint to the sketch
Args:
figure (ISketchFigure): Figure to constrain (e.g. Line)
constraint (Sketch.Constraints): Constraint to apply
Returns:
True if constraint was added
"""Overload 2:
def AddConstraint(figures, constraint):
"""
Adds a constraint to the sketch
Args:
figures (list): List of Sketch figures to constrain [Figure1, Figure2, ...] (Circle, Line, CircularArc, etc.)
constraint (Sketch.Constraints): Constraint to apply
Returns:
Returns True if constraint was added
"""Adds a dimension to the sketch between two points
Overload 1:
def AddDimension(p1, p2):
"""
Adds a dimension to the sketch between two points
Args:
p1 (SketchPoint): First point
p2 (SketchPoint): Second point
"""Overload 2:
def AddDimension(circle):
"""
Adds a dimension to the radius of a circle
Args:
circle (Circle): Circle to dimension
"""Overload 3:
def AddDimension(arc):
"""
Adds a dimension to the radius of an arc
Args:
arc (CircularArc): Arc to dimension
"""Adds an ellipse to the sketch using three points
Overload 1:
def AddEllipse(center_x, center_y, major_x, major_y, minor_x, minor_y, is_reference):
"""
Adds an ellipse to the sketch using three points
Args:
center_x (float): X coordinate of ellipse center
center_y (float): Y coordinate of ellipse center
major_x (float): X coordinate of ellipse on major axis
major_y (float): Y coordinate of ellipse on major axis
minor_x (float): X coordinate of ellipse on minor axis
minor_y (float): Y coordinate of ellipse on minor axis
is_reference (bool): True to create a reference ellipse
Returns:
An ellipse object
"""Overload 2:
def AddEllipse(center_x, center_y, major_axis_diameter, minor_major_ratio, major_axis_angle, is_reference):
"""
Adds an ellipse to the sketch
Args:
center_x (float): X coordinate of ellipse center
center_y (float): Y coordinate of ellipse center
major_axis_diameter (float): Diameter of ellipse on major axis
minor_major_ratio (float): Ratio of minor diameter to major diameter
major_axis_angle (float): Angle of major axis
is_reference (bool): True to create a reference ellipse
Returns:
An ellipse object
"""Overload 3:
def AddEllipse(new_ellipse):
"""
Adds an ellipse to the sketch
Args:
new_ellipse (Ellipse): Ellipse to add
Returns:
Added ellipse
"""Adds an elliptical arc to the sketch
Overload 1:
def AddEllipticalArc(center_x, center_y, start_x, start_y, end_x, end_y, major_axis_diameter, minor_major_ratio, major_axis_angle, is_reference):
"""
Adds an elliptical arc to the sketch
Args:
center_x (float): X coordinate of arc center
center_y (float): Y coordinate of arc center
start_x (float): X coorindate of arc start
start_y (float): Y coordinate of arc start
end_x (float): X coordinate of arc end
end_y (float): Y coordinate of arc end
major_axis_diameter (float): Diameter of ellipse on major axis
minor_major_ratio (float): Ratio of minor diameter to major diameter
major_axis_angle (float): Angle of major axis
is_reference (bool): True to create a reference elliptical arc
Returns:
An elliptical arc object
"""Overload 2:
def AddEllipticalArc(new_elliptical_arc):
"""
Adds an elliptical arc to the sketch
Args:
new_elliptical_arc (EllipticalArc): Elliptical arc to add
Returns:
Added elliptical arc
"""Adds a figure to the sketch
def AddFigure(new_figure):
"""
Adds a figure to the sketch
Args:
new_figure (ISketchFigure): Figure to add
Returns:
The added figure
"""Adds a line to the sketch
Overload 1:
def AddLine(start_point, end_point, is_reference):
"""
Adds a line to the sketch
Args:
start_point (list): Start of line [X, Y]
end_point (list): End of line [X, Y]
is_reference (bool): true if line is a reference line
Returns:
The added line
"""Overload 2:
def AddLine(new_line):
"""
Adds a line to the sketch
Args:
new_line (Line): 2D line to add
Returns:
The added line
"""Overload 3:
def AddLine(x1, y1, x2, y2, is_reference):
"""
Adds a line to the sketch
Args:
x1 (float): Start point X
y1 (float): Start point Y
x2 (float): End point X
y2 (float): End point Y
is_reference (bool): true to create a reference line
Returns:
The added line
"""Adds a polyline to the sketch
def AddLines(points, is_reference):
"""
Adds a polyline to the sketch
Args:
points (list): Set of points [Point1X, Point1Y, Point2X, Point2Y, ...]
is_reference (bool): true if line is a reference line
"""Adds a point to the sketch
Overload 1:
def AddPoint(x, y):
"""
Adds a point to the sketch
Args:
x (float): Point X coordinate
y (float): Point Y coordinate
Returns:
The created sketch point
"""Overload 2:
def AddPoint(x, y, is_reference):
"""
Adds a point to the sketch [DEPRECATED - DO NOT USE]
Args:
x (float): Point X coordinate
y (float): Point Y coordinate
is_reference (bool): Set to false
Returns:
The added point
"""Overload 3:
def AddPoint(new_point):
"""
Adds a point to the sketch
Args:
new_point (SketchPoint): Point to add
Returns:
The added point
"""Adds a regular polygon to the sketch
def AddPolygon(center_x, center_y, diameter, sides, is_reference):
"""
Adds a regular polygon to the sketch
Args:
center_x (float): X coordinate for polygon center
center_y (float): Y coordinate for polygon center
diameter (float): Diameter of polygon
sides (int): Number of sides
is_reference (bool): True to create a reference polygon
"""Adds a polyhole to the sketch Create a "circle" whose size should be accurate regardless of the 3D printing method See: http://hydraraptor.blogspot.co.uk/2011/02/polyholes.html
def AddPolyhole(center_x, center_y, diameter, is_reference):
"""
Adds a polyhole to the sketch Create a "circle" whose size should be accurate regardless of the 3D printing method See: http://hydraraptor.blogspot.co.uk/2011/02/polyholes.html
Args:
center_x (float): X coordinate for hole center
center_y (float): Y coordinate for hole center
diameter (float): Diameter of hole
is_reference (bool): true if line is a reference line
"""Adds a polyline to the sketch
def AddPolyline(line, is_reference):
"""
Adds a polyline to the sketch
Args:
line (Polyline): Polyine to add
is_reference (bool): true if line is a reference line
"""Adds a rectangle to the sketch
def AddRectangle(bottom_left_x, bottom_left_y, top_right_x, top_right_y, is_reference):
"""
Adds a rectangle to the sketch
Args:
bottom_left_x (float): X coordinate of bottom left corner
bottom_left_y (float): Y coordinate of bottom left corner
top_right_x (float): X coordinate of top right
top_right_y (float): Y coordinate of top right
is_reference (bool): True to create a reference rectangle
"""Copies a sketch into this sketch
Overload 1:
def CopyFrom(source):
"""
Copies a sketch into this sketch
Args:
source (Sketch): Sketch to copy from
"""Overload 2:
def CopyFrom(source, angle, rotation_center_x, rotation_center_y, translate_x, translate_y, scale_origin_x, scale_origin_y, scale_factor):
"""
Copies a sketch into this sketch
Args:
source (Sketch): Sketch to copy from
angle (float): Rotation angle
rotation_center_x (float): X-coodinate for center of rotation
rotation_center_y (float): Y-coordinate for center of rotation
translate_x (float): Amount to move sketch in X direction
translate_y (float): Amount to move sketch in Y direction
scale_origin_x (float): X-coordinate for scaling origin
scale_origin_y (float): Y-coordinate for scaling origin
scale_factor (float): Factor for scaling as a percentage
"""Exports the sketch to an SVG
Overload 1:
def ExportSVG(file_name):
"""
Exports the sketch to an SVG
Args:
file_name (str): Path and name of SVG file to export to
"""Overload 2:
def ExportSVG(file_name, include_references):
"""
Exports the sketch to an SVG
Args:
file_name (str): Path and name of SVG file to export to
include_references (bool): true to include reference figures in export
"""Overload 3:
def ExportSVG(file_name, include_references, stroke_width, stroke_color, stroke_line_cap, stroke_dashed, stroke_dash_length, reference_stroke_width, reference_stroke_color, reference_stroke_line_cap, reference_stroke_dashed, reference_stroke_dash_length):
"""
Exports the sketch to an SVG with specific styling
Args:
file_name (str): Path and name of SVG file to export to
include_references (bool): true to include reference figures in export
stroke_width (float): Stroke width
stroke_color (str): String containing name of stroke color
stroke_line_cap (str): String containing name of stroke line cap type
stroke_dashed (bool): true if stroke dashed, false if solid
stroke_dash_length (float): Length of stroke dashes if dashed
reference_stroke_width (float): Reference stroke width
reference_stroke_color (str): String containing name of reference stroke color
reference_stroke_line_cap (str): String containing name of reference stroke line cap type, can be: butt, round, square
reference_stroke_dashed (bool): true if reference stroke dashed, false if solid
reference_stroke_dash_length (float): Length of reference stroke dashes if dashed
"""Adds elements to the sketch from XML
def FromXml(xml):
"""
Adds elements to the sketch from XML
Args:
xml (str): XML to parse
"""Projects a 3D point in the part coordinate system into a point on the sketch
def GlobaltoPoint(x, y, z):
"""
Projects a 3D point in the part coordinate system into a point on the sketch
Args:
x (float): X coordinate of 3D point
y (float): Y coordinate of 3D point
z (float): Z coordinate of 3D point
Returns:
Python list [x, y]
"""Imports an SVG into the sketch
Overload 1:
def ImportSVG(file_name):
"""
Imports an SVG into the sketch
Args:
file_name (str): Path and name of SVG file
"""Overload 2:
def ImportSVG(file_name, translate_x, translate_y, rotation_angle, translate_then_rotate, native_figures):
"""
Imports an SVG into the sketch
Args:
file_name (str): Path and name of SVG file
translate_x (float): Amount to translate in the X direction
translate_y (float): Amount to translate in the Y direction
rotation_angle (float): Amount to rotate in degrees
translate_then_rotate (bool): true to perform translation passed to this function before rotation passed to this function, false to reverse order
native_figures (bool): true to create native circles and arcs when possible, false to always use Bezier curves
"""Loads the sketch from an XML file
def LoadXml(file_name):
"""
Loads the sketch from an XML file
Args:
file_name (str): Path and name of file to load from
"""Converts a point on the sketch into a 3D point in the part coordinate system
def PointtoGlobal(x, y):
"""
Converts a point on the sketch into a 3D point in the part coordinate system
Args:
x (float): X coordinate of point on sketch
y (float): Y coordinate of point on sketch
Returns:
Python list [x, y, z]
"""Saves the sketch to an XML file Does not support ellipses and elliptical arcs
def SavetoXml(file_name):
"""
Saves the sketch to an XML file Does not support ellipses and elliptical arcs
Args:
file_name (str): Path and name of file to save to
"""Starts mapping the face so that the specified edge is at [0, 0]
Overload 1:
def StartFaceMapping(edge_vertex1, edge_vertex2):
"""
Starts mapping the face so that the specified edge is at [0, 0]
Args:
edge_vertex1 (Vertex): Firrt vertex of edge
edge_vertex2 (Vertex): Second vertex of edge
"""Overload 2:
def StartFaceMapping(edge_end_point1, edge_end_point2):
"""
Starts mapping the face so that the specified edge is at [0, 0] Affects only the operation of the AddXXX functions and the GlobaltoPoint and PointtoGlobal functions, which will now use mapped X and Y values
Args:
edge_end_point1 (list): First end point of edge [X, Y, Z]
edge_end_point2 (list): Second end point of edge [X, Y, Z]
"""Starts mapping the sketch so that the specified line is at [0, 0] Affects only the operation of the AddXXX functions and the GlobaltoPoint and PointtoGlobal functions, which will now use mapped X and Y values
def StartMapping(point1, point2, point_above_axis):
"""
Starts mapping the sketch so that the specified line is at [0, 0] Affects only the operation of the AddXXX functions and the GlobaltoPoint and PointtoGlobal functions, which will now use mapped X and Y values
Args:
point1 (list): First line end point [X, Y, Z]
point2 (list): Second line end point [X, Y, Z]
point_above_axis (list): Point to be located above the X-axis
"""Documentation Home | Classes | Methods Index | Properties Index | Members Index
Generated on 2025-09-23 02:06