@Override public PolygonRoi convert(final Polyline mask) { final float[] x = new float[mask.numVertices()]; final float[] y = new float[mask.numVertices()]; for (int i = 0; i < mask.numVertices(); i++) { final RealLocalizable v = mask.vertex(i); x[i] = (float) v.getDoublePosition(0); y[i] = (float) v.getDoublePosition(1); } return new PolygonRoi(x, y, mask.numVertices(), Roi.POLYLINE); }