polypieces - Script command

Returns the disjoint segments of a polygon as a list of polygons without external seams.

Example

The following script creates a single polygon object in the object tree. However, it is actually composed of two disjoint polygons due to the duplicate paths between (1,1) and (1,2).

V = [ [0, 0];
      [2, 0];
      [1, 1];
      [1, 2];
      [2, 3];
      [0, 3];
      [1, 2];
      [1, 1] ];
addpoly({"name": "originalWithSeam",
"vertices": V*1e-6});

Applying the polypieces command removes the seams from the vertices and makes it easier to turn the disjoint segments into separate objects.

delete;
W = polypieces(V); #< cell array with two polygons
for(idx=1:length(W)) {
addpoly({"name": "piece_"+num2str(idx), "vertices": W{idx}*1e-6});
}

See Also

List of commands , addpoly, polyclean , polyarea , centroid , polyintersect , inpoly , polyand , polyor , polydiff , polyxor, polygrow