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spatial/r3: implement Vec.Cross

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This commit is contained in:
Sebastien Binet
2020-03-25 15:31:09 +01:00
parent 2321f504d0
commit e98ce15ff2
2 changed files with 32 additions and 0 deletions
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23
spatial/r3/vector_test.go
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@@ -112,3 +112,26 @@ func TestDot(t *testing.T) {
})
}
}
func TestCross(t *testing.T) {
for _, test := range []struct {
v1, v2, want Vec
}{
{Vec{1, 0, 0}, Vec{1, 0, 0}, Vec{0, 0, 0}},
{Vec{1, 0, 0}, Vec{0, 1, 0}, Vec{0, 0, 1}},
{Vec{0, 1, 0}, Vec{1, 0, 0}, Vec{0, 0, -1}},
{Vec{1, 2, 3}, Vec{-4, 5, -6}, Vec{-27, -6, 13}},
{Vec{1, 2, 3}, Vec{1, 2, 3}, Vec{}},
{Vec{1, 2, 3}, Vec{2, 3, 4}, Vec{-1, 2, -1}},
} {
t.Run("", func(t *testing.T) {
got := test.v1.Cross(test.v2)
if got != test.want {
t.Fatalf(
"error: %v × %v = %v, want %v",
test.v1, test.v2, got, test.want,
)
}
})
}
}