47. isosurface — Isosurface: surface reconstruction algorithms

This module contains the marching cube algorithm.

Some of the code is based on the example by Paul Bourke from http://paulbourke.net/geometry/polygonise/

Classes defined in module isosurface

Functions defined in module isosurface

isosurface.isosurface(data, level, nproc=-1)

Create an isosurface through data at given level.

• data: (nx,ny,nz) shaped array of data values at points with coordinates equal to their indices. This defines a 3D volume [0,nx-1], [0,ny-1], [0,nz-1]
• level: data value at which the isosurface is to be constructed
• nproc: number of parallel processes to use. On multiprocessor machines this may be used to speed up the processing. If <= 0 , the number of processes will be set equal to the number of processors, to achieve a maximal speedup.

Returns an (ntr,3,3) array defining the triangles of the isosurface. The result may be empty (if level is outside the data range).