Select Category: Geometry primitives Curve geometry Construction geometry DXF input and output STL output Sheet composition Line types and colours Drawing model

Geometry primitives

geom.signedarea	Signed area of a simple polygon.
geom.bbox	Axis-aligned bounding box of a set of points.
geom.centroid	Area centroid of a simple polygon.
geom.transform	Apply a planar transformation to a set of points.
geom.isrectilinear	True when every edge of a polygon is parallel to an axis.
geom.offset	Offset a rectilinear polygon inward or outward.
geom.largestrect	Largest axis-aligned rectangle inscribed in a rectilinear polygon.
geom.triangulate	Triangulate a polygon, optionally one with holes.
geom.hatchlines	The line segments that fill a boundary with a hatch pattern.

Curve geometry

geom.curvature	Signed curvature of a sampled planar curve.
geom.curvesample	Sample a parametric curve to a stated chordal tolerance.
geom.curveoffset	Equidistant offset of a smooth sampled curve.
geom.selfintersects	Test whether a sampled curve crosses itself.
geom.arclength	Length along a sampled curve.
geom.resample	Respace the points of a curve evenly along its length.
geom.simplify	Remove the points of a curve that carry no shape, within a tolerance.

Construction geometry

geom.intersectlines	Where two lines cross.
geom.intersectcircle	Where a line meets a circle.
geom.intersectcircles	Where two circles meet.
geom.tangentpoints	Where the tangents from a point touch a circle.
geom.fillet	The arc of a given radius tangent to two lines.

DXF input and output

dxf.read	Read geometry from an ASCII DXF file.
dxf.write	Write drawing entities to an ASCII DXF file.

STL output

stl.write

Write a section stack to a binary STL file.

Sheet composition

draw.titleblock	A sheet frame with a title block in its corner.
draw.coordtable	A table of point coordinates, for a shape that cannot be dimensioned.
draw.symbol	The code that stands for a drawing symbol in a text string.

Line types and colours

draw.linetype	Dash patterns of the standard line types.
draw.colour	Convert between colour names, drawing colour numbers and RGB.

Drawing model

draw.Drawing	A two-dimensional drawing in model space.
draw.fromentities	Build a drawing from an entity list, as read from a file.