2. Description of irregular shapes

2.1 Contour discretization

Apart from any required connection points, only the outline is required to know which objects are to be placed. In this case, the contour is defined using a drawing-editing tool or extracted from the database of a CAD (computer-aided design) system in the design workshop. It can also be the result of a contour search algorithm based on the image of a template taken from a camera or scanner.

In all cases, the contour is discretized relative to the tessellation (square,...