Function TestPathSimplifyVisvalingamWhyatt

path_simplify_test.go:9–47

(t *testing.T)

)

func TestPathSimplifyVisvalingamWhyatt(t *testing.T) {
	tests := []struct {
		p         string
		tolerance float64
		r         string
	}{
		// closed path
		{"M0 0L10 0L10 4L11 5L10 6L10 10L0 10z", 1.0, "M0 0L10 0L10 4L11 5L10 6L10 10L0 10z"},
		{"M0 0L10 0L10 4L11 5L10 6L10 10L0 10z", 2.0, "M0 0L10 0L10 10L0 10z"},
		{"M0 0L10 0L10 4L11 5L10 6L10 10L0 10z", 50.0, "M0 0L10 0L10 10L0 10z"},
		{"M0 0L10 0L10 4L11 5L10 6L10 10L0 10z", 51.0, ""},

		// open path
		{"M0 0L10 0L11 1L12 0L13 -5L14 0", 1.0, "M0 0L10 0L11 1L12 0L13 -5L14 0"},
		{"M0 0L10 0L11 1L12 0L13 -5L14 0", 2.0, "M0 0L12 0L13 -5L14 0"},
		{"M0 0L10 0L11 1L12 0L13 -5L14 0", 6.0, "M0 0L14 0"},

		// bugs
		{"M0 0L1 1L2 0zM2 0L4 2L4 0zM4 0L5 1L6 0z", 2.0, "M2 0L4 2L4 0z"},
		{"M2 0L4 2L4 0zM0 0L1 1L2 0zM4 0L5 1L6 0z", 2.0, "M2 0L4 2L4 0z"},
		{"M0 0L1 1L2 0zM4 0L5 1L6 0zM2 0L4 2L4 0z", 2.0, "M2 0L4 2L4 0z"},
		{"M0 0L40 0L40.1 0.1L40.2 0L40.3 0.5L40 40z", 2.0, "M0 0L40.2 0L40.3 0.5L40 40z"},
		{"M0 0L40 0L40.1 0.1L40.2 0L40.3 0.5L40 40z", 3.0, "M0 0L40.2 0L40 40z"},
		{"M0 0L10 0", 1.0, "M0 0L10 0"},
	}

	for _, tt := range tests {
		t.Run(tt.p, func(t *testing.T) {
			p := MustParseSVGPath(tt.p)
			r := MustParseSVGPath(tt.r)
			test.T(t, p.SimplifyVisvalingamWhyatt(tt.tolerance), r)
		})
	}

	p := MustParseSVGPath("M0 0L10 0L5 10z")
	test.T(t, NewVisvalingamWhyatt(func(_ Point) bool {
		return false
	}).Simplify(p.Split(), 1.0), p)
}

func TestPathFastClip(t *testing.T) {
	tests := []struct {