# 61. `plugins.sectionize` — sectionize.py

Create, measure and approximate cross section of a Formex.

## 61.1. Functions defined in module plugins.sectionize

`plugins.sectionize.``connectPoints`(F, close=False)

  Return a Formex with straight segments connecting subsequent points.

  F can be a Formex or data that can be turned into a Formex (e.g. an (n,3) array of points). The result is a plex-2 Formex connecting the subsequent points of F or the first point of subsequent elements in case the plexitude of F > 1. If close=True, the last point is connected back to the first to create a closed polyline.

`plugins.sectionize.``centerline`(F, dir, nx=2, mode=2, th=0.2)

  Compute the centerline in the direction dir.

`plugins.sectionize.``createSegments`(F, ns=None, th=None)

  Create segments along 0 axis for sectionizing the Formex F.

`plugins.sectionize.``sectionize`(F, segments, th=0.1, visual=True)

  Sectionize a Formex in planes perpendicular to the segments.

  F is any Formex. segments is a plex-2 Formex.

  Planes are chosen in each center of a segment, perpendicular to that segment. Then parts of the Formex F are selected in the neighbourhood of each plane. Each part is then approximated by a circle in that plane.

  th is the relative thickness of the selected part of the Formex. If th = 0.5, that part will be delimited by two planes in the endpoints of and perpendicular to the segments.

`plugins.sectionize.``drawCircles`(sections, ctr, diam)

  Draw circles as approximation of Formices.