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// Copyright ©2015 The Gonum Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package draw
import (
"image/color"
"reflect"
"testing"
"gonum.org/v1/plot/vg"
"gonum.org/v1/plot/vg/recorder"
)
func TestCrop(t *testing.T) {
ls := LineStyle{
Color: color.NRGBA{0, 20, 0, 123},
Width: 0.1 * vg.Inch,
}
var r1 recorder.Canvas
c1 := NewCanvas(&r1, 6, 3)
c11 := Crop(c1, 0, -3, 0, 0)
c12 := Crop(c1, 3, 0, 0, 0)
var r2 recorder.Canvas
c2 := NewCanvas(&r2, 6, 3)
c21 := Canvas{
Canvas: c2.Canvas,
Rectangle: vg.Rectangle{
Min: vg.Point{X: 0, Y: 0},
Max: vg.Point{X: 3, Y: 3},
},
}
c22 := Canvas{
Canvas: c2.Canvas,
Rectangle: vg.Rectangle{
Min: vg.Point{X: 3, Y: 0},
Max: vg.Point{X: 6, Y: 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) {
var r recorder.Canvas
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 := [][]vg.Rectangle{
{
vg.Rectangle{
Min: vg.Point{X: 1, Y: 4},
Max: vg.Point{X: 4, Y: 6},
},
vg.Rectangle{
Min: vg.Point{X: 5, Y: 4},
Max: vg.Point{X: 8, Y: 6},
},
vg.Rectangle{
Min: vg.Point{X: 9, Y: 4},
Max: vg.Point{X: 12, Y: 6},
},
},
{
vg.Rectangle{
Min: vg.Point{X: 1, Y: 1},
Max: vg.Point{X: 4, Y: 3},
},
vg.Rectangle{
Min: vg.Point{X: 5, Y: 1},
Max: vg.Point{X: 8, Y: 3},
},
vg.Rectangle{
Min: vg.Point{X: 9, Y: 1},
Max: vg.Point{X: 12, Y: 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])
}
}
}
}
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