/
bounds_test.go
231 lines (220 loc) · 6.92 KB
/
bounds_test.go
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package geom
import (
"strconv"
"testing"
"github.com/alecthomas/assert/v2"
)
func TestBoundsExtend(t *testing.T) {
for i, tc := range []struct {
b *Bounds
g T
expected *Bounds
}{
{
b: NewBounds(XY).SetCoords(Coord{0, 0}, Coord{0, 0}),
g: NewPoint(XY).MustSetCoords(Coord{10, -10}),
expected: NewBounds(XY).SetCoords(Coord{0, -10}, Coord{10, 0}),
},
{
b: NewBounds(XY).SetCoords(Coord{-100, -100}, Coord{100, 100}),
g: NewPoint(XY).MustSetCoords(Coord{-10, 10}),
expected: NewBounds(XY).SetCoords(Coord{-100, -100}, Coord{100, 100}),
},
{
b: NewBounds(XYZ).SetCoords(Coord{0, 0, -1}, Coord{10, 10, 1}),
g: NewPoint(XY).MustSetCoords(Coord{5, -10}),
expected: NewBounds(XYZ).SetCoords(Coord{0, -10, -1}, Coord{10, 10, 1}),
},
{
b: NewBounds(XYZ).SetCoords(Coord{0, 0, 0}, Coord{10, 10, 10}),
g: NewPoint(XYZ).MustSetCoords(Coord{5, -10, 3}),
expected: NewBounds(XYZ).SetCoords(Coord{0, -10, 0}, Coord{10, 10, 10}),
},
{
b: NewBounds(XYZ).SetCoords(Coord{0, 0, 0}, Coord{10, 10, 10}),
g: NewMultiPoint(XYM).MustSetCoords([]Coord{{-1, -1, -1}, {11, 11, 11}}),
expected: NewBounds(XYZM).SetCoords(Coord{-1, -1, 0, -1}, Coord{11, 11, 10, 11}),
},
{
b: NewBounds(XY).SetCoords(Coord{0, 0}, Coord{10, 10}),
g: NewMultiPoint(XYM).MustSetCoords([]Coord{{-1, -1, -1}, {11, 11, 11}}),
expected: NewBounds(XYM).SetCoords(Coord{-1, -1, -1}, Coord{11, 11, 11}),
},
{
b: NewBounds(XY).SetCoords(Coord{0, 0}, Coord{10, 10}),
g: NewMultiPoint(XYZ).MustSetCoords([]Coord{{-1, -1, -1}, {11, 11, 11}}),
expected: NewBounds(XYZ).SetCoords(Coord{-1, -1, -1}, Coord{11, 11, 11}),
},
{
b: NewBounds(XYM).SetCoords(Coord{0, 0, 0}, Coord{10, 10, 10}),
g: NewMultiPoint(XYZ).MustSetCoords([]Coord{{-1, -1, -1}, {11, 11, 11}}),
expected: NewBounds(XYZM).SetCoords(Coord{-1, -1, -1, 0}, Coord{11, 11, 11, 10}),
},
} {
t.Run(strconv.Itoa(i), func(t *testing.T) {
assert.Equal(t, tc.expected, tc.b.Clone().Extend(tc.g))
})
}
}
func TestBoundsIsEmpty(t *testing.T) {
for i, tc := range []struct {
b *Bounds
expected bool
}{
{
b: &Bounds{layout: XY, min: Coord{0, 0}, max: Coord{-1, -1}},
expected: true,
},
{
b: &Bounds{layout: XY, min: Coord{0, 0}, max: Coord{0, 0}},
expected: false,
},
{
b: &Bounds{layout: XY, min: Coord{-100, -100}, max: Coord{100, 100}},
expected: false,
},
} {
t.Run(strconv.Itoa(i), func(t *testing.T) {
assert.Equal(t, tc.expected, tc.b.IsEmpty())
})
}
}
func TestBoundsOverlaps(t *testing.T) {
for i, tc := range []struct {
b1 *Bounds
b2 *Bounds
expected bool
}{
{
b1: &Bounds{layout: XY, min: Coord{0, 0}, max: Coord{0, 0}},
b2: &Bounds{layout: XY, min: Coord{-10, 0}, max: Coord{-5, 10}},
expected: false,
},
{
b1: &Bounds{layout: XY, min: Coord{-100, -100}, max: Coord{100, 100}},
b2: &Bounds{layout: XY, min: Coord{-10, 0}, max: Coord{-5, 10}},
expected: true,
},
{
b1: &Bounds{layout: XY, min: Coord{1, 1}, max: Coord{5, 5}},
b2: &Bounds{layout: XY, min: Coord{-5, -5}, max: Coord{-1, -1}},
expected: false,
},
{
b1: &Bounds{layout: XYZ, min: Coord{-100, -100, -100}, max: Coord{100, 100, 100}},
b2: &Bounds{layout: XYZ, min: Coord{-10, 0, 0}, max: Coord{-5, 10, 10}},
expected: true,
},
{
b1: &Bounds{layout: XYZ, min: Coord{0, 0, 0}, max: Coord{100, 100, 100}},
b2: &Bounds{layout: XYZ, min: Coord{5, 5, -10}, max: Coord{10, 10, -5}},
expected: false,
},
{
b1: &Bounds{layout: XY, min: Coord{0, 0}, max: Coord{0, 0}},
b2: &Bounds{layout: XY, min: Coord{-10, -10}, max: Coord{-0.000000000000000000000000000001, 0}},
expected: false,
},
} {
t.Run(strconv.Itoa(i), func(t *testing.T) {
assert.Equal(t, tc.expected, tc.b1.Overlaps(tc.b1.layout, tc.b2))
})
}
}
func TestBoundsOverlapsPoint(t *testing.T) {
for i, tc := range []struct {
b *Bounds
p Coord
expected bool
}{
{
b: &Bounds{layout: XY, min: Coord{0, 0}, max: Coord{0, 0}},
p: Coord{-10, 0},
expected: false,
},
{
b: &Bounds{layout: XY, min: Coord{-100, -100}, max: Coord{100, 100}},
p: Coord{-10, 0},
expected: true,
},
{
b: &Bounds{layout: XYZ, min: Coord{-100, -100, -100}, max: Coord{100, 100, 100}},
p: Coord{-5, 10, 10},
expected: true,
},
{
b: &Bounds{layout: XYZ, min: Coord{0, 0, 0}, max: Coord{100, 100, 100}},
p: Coord{5, 5, -10},
expected: false,
},
{
b: &Bounds{layout: XY, min: Coord{0, 0}, max: Coord{10, 10}},
p: Coord{-0.000000000000000000000000000001, 0},
expected: false,
},
} {
t.Run(strconv.Itoa(i), func(t *testing.T) {
assert.Equal(t, tc.expected, tc.b.OverlapsPoint(tc.b.layout, tc.p))
})
}
}
func TestBoundsPolygon(t *testing.T) {
for i, tc := range []struct {
b *Bounds
expected *Polygon
}{
{
b: NewBounds(NoLayout),
expected: NewPolygon(XY),
},
{
b: NewBounds(XY).Set(0, 0, 1, 1),
expected: NewPolygon(XY).MustSetCoords([][]Coord{{{0, 0}, {0, 1}, {1, 1}, {1, 0}, {0, 0}}}),
},
{
b: NewBounds(XYZ).Set(0, 0, 0, 1, 1, 1),
expected: NewPolygon(XY).MustSetCoords([][]Coord{{{0, 0}, {0, 1}, {1, 1}, {1, 0}, {0, 0}}}),
},
{
b: NewBounds(XYM).Set(0, 0, 0, 1, 1, 1),
expected: NewPolygon(XY).MustSetCoords([][]Coord{{{0, 0}, {0, 1}, {1, 1}, {1, 0}, {0, 0}}}),
},
{
b: NewBounds(XYZM).Set(0, 0, 0, 0, 1, 1, 1, 1),
expected: NewPolygon(XY).MustSetCoords([][]Coord{{{0, 0}, {0, 1}, {1, 1}, {1, 0}, {0, 0}}}),
},
{
b: NewBounds(XY).Set(1, 2, 3, 4),
expected: NewPolygon(XY).MustSetCoords([][]Coord{{{1, 2}, {1, 4}, {3, 4}, {3, 2}, {1, 2}}}),
},
{
b: NewBounds(XYZ).Set(1, 2, 3, 4, 5, 6),
expected: NewPolygon(XY).MustSetCoords([][]Coord{{{1, 2}, {1, 5}, {4, 5}, {4, 2}, {1, 2}}}),
},
} {
t.Run(strconv.Itoa(i), func(t *testing.T) {
assert.Equal(t, tc.expected, tc.b.Polygon())
})
}
}
func TestBoundsSet(t *testing.T) {
bounds := Bounds{layout: XY, min: Coord{0, 0}, max: Coord{10, 10}}
bounds.Set(0, 0, 20, 20)
expected := Bounds{layout: XY, min: Coord{0, 0}, max: Coord{20, 20}}
assert.Equal(t, expected, bounds)
assert.Panics(t, func() {
bounds.Set(2, 2, 2, 2, 2)
})
}
func TestBoundsSetCoords(t *testing.T) {
bounds := &Bounds{layout: XY, min: Coord{0, 0}, max: Coord{10, 10}}
bounds.SetCoords(Coord{0, 0}, Coord{20, 20})
expected := Bounds{layout: XY, min: Coord{0, 0}, max: Coord{20, 20}}
assert.Equal(t, expected, *bounds)
bounds = NewBounds(XY)
bounds.SetCoords(Coord{0, 0}, Coord{20, 20})
assert.Equal(t, expected, *bounds)
bounds = NewBounds(XY)
bounds.SetCoords(Coord{20, 0}, Coord{0, 20}) // set coords should ensure valid min / max
assert.Equal(t, expected, *bounds)
}