Measuring

A flange's wall thickness, mapped over the part Channels placed by SciPy, so that no point is far from one How far a polygon strays from its cam Example A coast measured with dividers

Every object provides its area, length, center and bounding box directly, and Measure() returns them all as a dict together with the second moments and principal axes. Distances, closest points and inside tests take a point or an array of points. In a sketch, Measure(id) measures elements by their ids, so a drawing can be checked against its intent.

A measurement can also be a function of your own, stored on a sketch and evaluated again after every change, such as the thinnest wall, the largest end mill that fits, or the point farthest from a cooling channel. planex.measurements provides thickness maps, clearances, Hausdorff distances and torsion constants. See Field solvers as measurements for measurements that need a field solver.

In this section

Measurements

Areas, centroids and second momentsMeasure() as a dict, and the centroids and principal axes of two sections.

Boxes, crossings and open endsBounding boxes, edges by name, crossings, and the outline and holes.

Distances and clearancesShortest distances and connections, in the plane and in 3D.

Inside or outsidePoints tested against a face, one at a time or by the thousand.

Dimensions in a sketchLengths, angles and distances of sketch elements, by their ids.

Analysis

Part analysisMeasurements as functions, from thickness maps to checks that follow the sketch and optimization.

Everything at a glance

Size	mass (the area of faces, the length of wires), bounding_box, outer, inner
Mass properties	center (3D), inertia (3D, about the center), Measure(): Ih, Iv, Ihv, I1, I2, principal_angle
Distances	Distance(target, project=False, components=None, signed=False), ClosestPoint(point)
Inside	Contains(point, boundary=True)
Edges	Distance(..., on_carrier=True), Measure(to=...)
Sketches	sketch.Measure(id, to=...): lengths, radii, angles and distances between elements, by id
Analysis	Selectors by id, name, kind and position; vertex.angle, vertex.radius; planex.measurements with thickness maps, clearance, Hausdorff distance and torsion; Measure(f, id=...), measures

See Field solvers as measurements for measurements that need a field solver, NGSolve or FEniCSx, such as a peak temperature or a stress concentration.