Function TestContourPaths

plotter/contour_test.go:147–182

(t *testing.T)

}

func TestContourPaths(t *testing.T) {
	m := unitGrid{mat.NewDense(3, 4, []float64{
		2, 1, 4, 3,
		6, 7, 2, 5,
		9, 10, 11, 12,
	})}

	levels := []float64{1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5, 10.5}

	var (
		wantClosed = 2
		gotClosed  int
	)

	got := contourPaths(m, levels, unity, unity)
	for l, p := range got {
		sort.Sort(byLength(p))
		for i, c := range p {
			if isLoop(c) && isLoop(wantContours[l][i]) {
				if !circularPermutations(c[1:], wantContours[l][i][1:]) {
					t.Errorf("unexpected path:\n\tgot:%+v\n\twant:%+v", c, wantContours[l][i])
				}
			} else if !reflect.DeepEqual(c, wantContours[l][i]) && !reflect.DeepEqual(c, reverseOfPath(wantContours[l][i])) {
				t.Errorf("unexpected path:\n\tgot:%+v\n\twant:%+v", c, wantContours[l][i])
			}

			if isLoop(c) {
				gotClosed++
			}
		}
	}

	if gotClosed != wantClosed {
		t.Errorf("unexpected number of loops: got:%d want:%d", gotClosed, wantClosed)
	}
}

type byLength []vg.Path