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Merge pull request #427 from Osspial/cast_option

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Modify cast functions to return Option
This commit is contained in:
Brendan Zabarauskas 2017-08-22 19:32:57 +10:00 committed by GitHub
commit 3543ac0274
9 changed files with 53 additions and 21 deletions
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10
src/matrix.rs
View file

@ -1025,8 +1025,14 @@ macro_rules! impl_matrix {
impl<S: NumCast + Copy> $MatrixN<S> {
/// Component-wise casting to another type
#[inline]
pub fn cast<T: NumCast>(&self) -> $MatrixN<T> {
$MatrixN { $($field: self.$field.cast() ),+ }
pub fn cast<T: NumCast>(&self) -> Option<$MatrixN<T>> {
$(
let $field = match self.$field.cast() {
Some(field) => field,
None => return None
};
)+
Some($MatrixN { $($field),+ })
}
}
}

10
src/point.rs
View file

@ -127,8 +127,14 @@ macro_rules! impl_point {
impl<S: NumCast + Copy> $PointN<S> {
/// Component-wise casting to another type
#[inline]
pub fn cast<T: NumCast>(&self) -> $PointN<T> {
$PointN { $($field: NumCast::from(self.$field).unwrap()),+ }
pub fn cast<T: NumCast>(&self) -> Option<$PointN<T>> {
$(
let $field = match NumCast::from(self.$field) {
Some(field) => field,
None => return None
};
)+
Some($PointN { $($field),+ })
}
}

12
src/quaternion.rs
View file

@ -234,8 +234,16 @@ impl<S: BaseFloat> MetricSpace for Quaternion<S> {
impl<S: NumCast + Copy> Quaternion<S> {
/// Component-wise casting to another type.
pub fn cast<T: BaseFloat>(&self) -> Quaternion<T> {
Quaternion::from_sv(NumCast::from(self.s).unwrap(), self.v.cast())
pub fn cast<T: BaseFloat>(&self) -> Option<Quaternion<T>> {
let s = match NumCast::from(self.s) {
Some(s) => s,
None => return None
};
let v = match self.v.cast() {
Some(v) => v,
None => return None
};
Some(Quaternion::from_sv(s, v))
}
}

20
src/vector.rs
View file

@ -112,8 +112,14 @@ macro_rules! impl_vector {
impl<S: NumCast + Copy> $VectorN<S> {
/// Component-wise casting to another type.
#[inline]
pub fn cast<T: NumCast>(&self) -> $VectorN<T> {
$VectorN { $($field: NumCast::from(self.$field).unwrap()),+ }
pub fn cast<T: NumCast>(&self) -> Option<$VectorN<T>> {
$(
let $field = match NumCast::from(self.$field) {
Some(field) => field,
None => return None
};
)+
Some($VectorN { $($field),+ })
}
}
@ -341,8 +347,14 @@ macro_rules! impl_vector_default {
impl<S: NumCast + Copy> $VectorN<S> {
/// Component-wise casting to another type.
#[inline]
pub fn cast<T: NumCast>(&self) -> $VectorN<T> {
$VectorN { $($field: NumCast::from(self.$field).unwrap()),+ }
pub fn cast<T: NumCast>(&self) -> Option<$VectorN<T>> {
$(
let $field = match NumCast::from(self.$field) {
Some(field) => field,
None => return None
};
)+
Some($VectorN { $($field),+ })
}
}

6
tests/matrix.rs
View file

@ -741,12 +741,12 @@ pub mod matrix4 {
#[test]
fn test_cast() {
assert_ulps_eq!(Matrix2::new(0.2f64, 1.5, 4.7, 2.3).cast(), Matrix2::new(0.2f32, 1.5, 4.7, 2.3));
assert_ulps_eq!(Matrix2::new(0.2f64, 1.5, 4.7, 2.3).cast().unwrap(), Matrix2::new(0.2f32, 1.5, 4.7, 2.3));
assert_ulps_eq!(Matrix3::new(
0.2f64, 1.5, 4.7,
2.3, 5.7, 2.1,
4.6, 5.2, 6.6,
).cast(), Matrix3::new(
).cast().unwrap(), Matrix3::new(
0.2f32, 1.5, 4.7,
2.3, 5.7, 2.1,
4.6, 5.2, 6.6,
@ -757,7 +757,7 @@ pub mod matrix4 {
2.3, 5.7, 2.1, 1.1,
4.6, 5.2, 6.6, 0.2,
3.2, 1.8, 0.4, 2.9,
).cast(), Matrix4::new(
).cast().unwrap(), Matrix4::new(
0.2f32, 1.5, 4.7, 2.5,
2.3, 5.7, 2.1, 1.1,
4.6, 5.2, 6.6, 0.2,

6
tests/point.rs
View file

@ -77,7 +77,7 @@ fn test_rem() {
#[test]
fn test_cast() {
assert_ulps_eq!(Point1::new(0.9f64).cast(), Point1::new(0.9f32));
assert_ulps_eq!(Point2::new(0.9f64, 1.5).cast(), Point2::new(0.9f32, 1.5));
assert_ulps_eq!(Point3::new(1.0f64, 2.4, -3.13).cast(), Point3::new(1.0f32, 2.4, -3.13));
assert_ulps_eq!(Point1::new(0.9f64).cast().unwrap(), Point1::new(0.9f32));
assert_ulps_eq!(Point2::new(0.9f64, 1.5).cast().unwrap(), Point2::new(0.9f32, 1.5));
assert_ulps_eq!(Point3::new(1.0f64, 2.4, -3.13).cast().unwrap(), Point3::new(1.0f32, 2.4, -3.13));
}

2
tests/quaternion.rs
View file

@ -337,7 +337,7 @@ mod cast {
#[test]
fn test_cast() {
assert_ulps_eq!(Quaternion::new(0.9f64, 1.5, 2.4, 7.6).cast(),
assert_ulps_eq!(Quaternion::new(0.9f64, 1.5, 2.4, 7.6).cast().unwrap(),
Quaternion::new(0.9f32, 1.5, 2.4, 7.6));
}
}

6
tests/vector.rs
View file

@ -257,7 +257,7 @@ fn test_project_on() {
#[test]
fn test_cast() {
assert_ulps_eq!(Vector2::new(0.9f64, 1.5).cast(), Vector2::new(0.9f32, 1.5));
assert_ulps_eq!(Vector3::new(1.0f64, 2.4, -3.13).cast(), Vector3::new(1.0f32, 2.4, -3.13));
assert_ulps_eq!(Vector4::new(13.5f64, -4.6, -8.3, 2.41).cast(), Vector4::new(13.5f32, -4.6, -8.3, 2.41));
assert_ulps_eq!(Vector2::new(0.9f64, 1.5).cast().unwrap(), Vector2::new(0.9f32, 1.5));
assert_ulps_eq!(Vector3::new(1.0f64, 2.4, -3.13).cast().unwrap(), Vector3::new(1.0f32, 2.4, -3.13));
assert_ulps_eq!(Vector4::new(13.5f64, -4.6, -8.3, 2.41).cast().unwrap(), Vector4::new(13.5f32, -4.6, -8.3, 2.41));
}

2
tests/vector4f32.rs
View file

@ -171,5 +171,5 @@ fn test_normalize() {
#[test]
fn test_cast() {
assert_ulps_eq!(Vector4::new(13.5f32, -4.6, -8.3, 2.41).cast(), Vector4::new(13.5f32, -4.6, -8.3, 2.41));
assert_ulps_eq!(Vector4::new(13.5f32, -4.6, -8.3, 2.41).cast().unwrap(), Vector4::new(13.5f32, -4.6, -8.3, 2.41));
}