func TestCrop(t *testing.T) {
ls := LineStyle{
Color: color.NRGBA{0, 20, 0, 123},
Width: 0.1 * vg.Inch,
}
r1 := recorder.New(96)
c1 := NewCanvas(r1, 6, 3)
c11 := Crop(c1, 0, -3, 0, 0)
c12 := Crop(c1, 3, 0, 0, 0)
r2 := recorder.New(96)
c2 := NewCanvas(r2, 6, 3)
c21 := Canvas{
Canvas: c2.Canvas,
Rectangle: Rectangle{
Min: Point{0, 0},
Max: Point{3, 3},
},
}
c22 := Canvas{
Canvas: c2.Canvas,
Rectangle: Rectangle{
Min: Point{3, 0},
Max: Point{6, 3},
},
}
str := "unexpected result: %+v != %+v"
if c11.Rectangle != c21.Rectangle {
t.Errorf(str, c11.Rectangle, c21.Rectangle)
}
if c12.Rectangle != c22.Rectangle {
t.Errorf(str, c11.Rectangle, c21.Rectangle)
}
c11.StrokeLine2(ls, c11.Min.X, c11.Min.Y,
c11.Min.X+3*vg.Inch, c11.Min.Y+3*vg.Inch)
c12.StrokeLine2(ls, c12.Min.X, c12.Min.Y,
c12.Min.X+3*vg.Inch, c12.Min.Y+3*vg.Inch)
c21.StrokeLine2(ls, c21.Min.X, c21.Min.Y,
c21.Min.X+3*vg.Inch, c21.Min.Y+3*vg.Inch)
c22.StrokeLine2(ls, c22.Min.X, c22.Min.Y,
c22.Min.X+3*vg.Inch, c22.Min.Y+3*vg.Inch)
if !reflect.DeepEqual(r1.Actions, r2.Actions) {
t.Errorf(str, r1.Actions, r2.Actions)
}
}
func TestTile(t *testing.T) {
r := recorder.New(96)
c := NewCanvas(r, 13, 7)
const (
rows = 2
cols = 3
pad = 1
)
tiles := Tiles{
Rows: rows, Cols: cols,
PadTop: pad, PadBottom: pad,
PadRight: pad, PadLeft: pad,
PadX: pad, PadY: pad,
}
rectangles := [][]Rectangle{
{
Rectangle{
Min: Point{1, 4},
Max: Point{4, 6},
},
Rectangle{
Min: Point{5, 4},
Max: Point{8, 6},
},
Rectangle{
Min: Point{9, 4},
Max: Point{12, 6},
},
},
{
Rectangle{
Min: Point{1, 1},
Max: Point{4, 3},
},
Rectangle{
Min: Point{5, 1},
Max: Point{8, 3},
},
Rectangle{
Min: Point{9, 1},
Max: Point{12, 3},
},
},
}
for j := 0; j < rows; j++ {
for i := 0; i < cols; i++ {
str := "row %d col %d unexpected result: %+v != %+v"
tile := tiles.At(c, i, j)
if tile.Rectangle != rectangles[j][i] {
t.Errorf(str, j, i, tile.Rectangle, rectangles[j][i])
}
}
}
}
func TestLegendAlignment(t *testing.T) {
font, err := vg.MakeFont(plot.DefaultFont, 10.822510822510822) // This font size gives an entry height of 10.
if err != nil {
t.Fatalf("failed to create font: %v", err)
}
l := plot.Legend{
ThumbnailWidth: vg.Points(20),
TextStyle: draw.TextStyle{Font: font},
}
for _, n := range []string{"A", "B", "C", "D"} {
b, err := plotter.NewBarChart(plotter.Values{0}, 1)
if err != nil {
t.Fatalf("failed to create bar chart %q: %v", n, err)
}
l.Add(n, b)
}
r := recorder.New(100)
c := draw.NewCanvas(r, 100, 100)
l.Draw(draw.Canvas{
Canvas: c.Canvas,
Rectangle: draw.Rectangle{
Min: draw.Point{0, 0},
Max: draw.Point{100, 100},
},
})
got := r.Actions
// want is a snapshot of the actions for the code above when the
// graphical output has been visually confirmed to be correct for
// the bar charts example show in gonum/plot#25.
want := []recorder.Action{
&recorder.SetColor{
Color: color.Gray16{},
},
&recorder.Fill{
Path: vg.Path{
{Type: vg.MoveComp, X: 80, Y: 30},
{Type: vg.LineComp, X: 80, Y: 40},
{Type: vg.LineComp, X: 100, Y: 40},
{Type: vg.LineComp, X: 100, Y: 30},
{Type: vg.CloseComp},
},
},
&recorder.SetColor{
Color: color.Gray16{},
},
&recorder.SetLineWidth{
Width: 1,
},
&recorder.SetLineDash{},
&recorder.Stroke{
Path: vg.Path{
{Type: vg.MoveComp, X: 80, Y: 30},
{Type: vg.LineComp, X: 80, Y: 40},
{Type: vg.LineComp, X: 100, Y: 40},
{Type: vg.LineComp, X: 100, Y: 30},
{Type: vg.LineComp, X: 80, Y: 30},
},
},
&recorder.SetColor{},
&recorder.FillString{
Font: string("Times-Roman"),
Size: 10.822510822510822,
X: 69.48051948051948,
Y: 30.82251082251082,
String: "A",
},
&recorder.SetColor{
Color: color.Gray16{},
},
&recorder.Fill{
Path: vg.Path{
{Type: vg.MoveComp, X: 80, Y: 20},
{Type: vg.LineComp, X: 80, Y: 30},
{Type: vg.LineComp, X: 100, Y: 30},
{Type: vg.LineComp, X: 100, Y: 20},
{Type: vg.CloseComp},
},
},
&recorder.SetColor{
Color: color.Gray16{},
},
&recorder.SetLineWidth{
Width: 1,
},
&recorder.SetLineDash{},
&recorder.Stroke{
Path: vg.Path{
{Type: vg.MoveComp, X: 80, Y: 20},
{Type: vg.LineComp, X: 80, Y: 30},
{Type: vg.LineComp, X: 100, Y: 30},
{Type: vg.LineComp, X: 100, Y: 20},
{Type: vg.LineComp, X: 80, Y: 20},
},
},
&recorder.SetColor{},
&recorder.FillString{
Font: string("Times-Roman"),
Size: 10.822510822510822,
X: 70.07575757575758,
Y: 20.82251082251082,
String: "B",
},
&recorder.SetColor{
Color: color.Gray16{
Y: uint16(0),
},
},
&recorder.Fill{
Path: vg.Path{
{Type: vg.MoveComp, X: 80, Y: 10},
{Type: vg.LineComp, X: 80, Y: 20},
{Type: vg.LineComp, X: 100, Y: 20},
{Type: vg.LineComp, X: 100, Y: 10},
{Type: vg.CloseComp},
},
},
&recorder.SetColor{
Color: color.Gray16{},
},
&recorder.SetLineWidth{
Width: 1,
},
&recorder.SetLineDash{},
&recorder.Stroke{
Path: vg.Path{
{Type: vg.MoveComp, X: 80, Y: 10},
{Type: vg.LineComp, X: 80, Y: 20},
{Type: vg.LineComp, X: 100, Y: 20},
{Type: vg.LineComp, X: 100, Y: 10},
{Type: vg.LineComp, X: 80, Y: 10},
},
},
&recorder.SetColor{},
&recorder.FillString{
Font: string("Times-Roman"),
Size: 10.822510822510822,
X: 70.07575757575758,
Y: 10.822510822510822,
String: "C",
},
&recorder.SetColor{
Color: color.Gray16{},
},
&recorder.Fill{
Path: vg.Path{
{Type: vg.MoveComp, X: 80, Y: 0},
{Type: vg.LineComp, X: 80, Y: 10},
{Type: vg.LineComp, X: 100, Y: 10},
{Type: vg.LineComp, X: 100, Y: 0},
{Type: vg.CloseComp},
},
},
&recorder.SetColor{
Color: color.Gray16{},
},
&recorder.SetLineWidth{
Width: 1,
},
&recorder.SetLineDash{},
&recorder.Stroke{
Path: vg.Path{
{Type: vg.MoveComp, X: 80, Y: 0},
{Type: vg.LineComp, X: 80, Y: 10},
{Type: vg.LineComp, X: 100, Y: 10},
{Type: vg.LineComp, X: 100, Y: 0},
{Type: vg.LineComp, X: 80, Y: 0},
},
},
&recorder.SetColor{},
&recorder.FillString{
Font: string("Times-Roman"),
Size: 10.822510822510822,
X: 69.48051948051948,
Y: 0.8225108225108215,
String: "D",
},
}
if !reflect.DeepEqual(got, want) {
t.Errorf("unexpected legend actions:\ngot:\n%s\nwant:\n%s", formatActions(got), formatActions(want))
}
}
