pub struct UiScale(pub f32);
Expand description
The current scale of the UI.
A multiplier to fixed-sized ui values.
Note: This will only affect fixed ui values like Val::Px
Tuple Fields§
§0: f32
Methods from Deref<Target = f32>§
pub const RADIX: u32 = 2u32
pub const MANTISSA_DIGITS: u32 = 24u32
pub const DIGITS: u32 = 6u32
pub const EPSILON: f32 = 1.1920929E-7f32
pub const MIN: f32 = -3.40282347E+38f32
pub const MIN_POSITIVE: f32 = 1.17549435E-38f32
pub const MAX: f32 = 3.40282347E+38f32
pub const MIN_EXP: i32 = -125i32
pub const MAX_EXP: i32 = 128i32
pub const MIN_10_EXP: i32 = -37i32
pub const MAX_10_EXP: i32 = 38i32
pub const NAN: f32 = NaN_f32
pub const INFINITY: f32 = +Inf_f32
pub const NEG_INFINITY: f32 = -Inf_f32
1.62.0 · Sourcepub fn total_cmp(&self, other: &f32) -> Ordering
pub fn total_cmp(&self, other: &f32) -> Ordering
Returns the ordering between self
and other
.
Unlike the standard partial comparison between floating point numbers,
this comparison always produces an ordering in accordance to
the totalOrder
predicate as defined in the IEEE 754 (2008 revision)
floating point standard. The values are ordered in the following sequence:
- negative quiet NaN
- negative signaling NaN
- negative infinity
- negative numbers
- negative subnormal numbers
- negative zero
- positive zero
- positive subnormal numbers
- positive numbers
- positive infinity
- positive signaling NaN
- positive quiet NaN.
The ordering established by this function does not always agree with the
PartialOrd
and PartialEq
implementations of f32
. For example,
they consider negative and positive zero equal, while total_cmp
doesn’t.
The interpretation of the signaling NaN bit follows the definition in the IEEE 754 standard, which may not match the interpretation by some of the older, non-conformant (e.g. MIPS) hardware implementations.
§Example
struct GoodBoy {
name: String,
weight: f32,
}
let mut bois = vec![
GoodBoy { name: "Pucci".to_owned(), weight: 0.1 },
GoodBoy { name: "Woofer".to_owned(), weight: 99.0 },
GoodBoy { name: "Yapper".to_owned(), weight: 10.0 },
GoodBoy { name: "Chonk".to_owned(), weight: f32::INFINITY },
GoodBoy { name: "Abs. Unit".to_owned(), weight: f32::NAN },
GoodBoy { name: "Floaty".to_owned(), weight: -5.0 },
];
bois.sort_by(|a, b| a.weight.total_cmp(&b.weight));
// `f32::NAN` could be positive or negative, which will affect the sort order.
if f32::NAN.is_sign_negative() {
assert!(bois.into_iter().map(|b| b.weight)
.zip([f32::NAN, -5.0, 0.1, 10.0, 99.0, f32::INFINITY].iter())
.all(|(a, b)| a.to_bits() == b.to_bits()))
} else {
assert!(bois.into_iter().map(|b| b.weight)
.zip([-5.0, 0.1, 10.0, 99.0, f32::INFINITY, f32::NAN].iter())
.all(|(a, b)| a.to_bits() == b.to_bits()))
}
Trait Implementations§
Source§impl FromReflect for UiScale
impl FromReflect for UiScale
Source§fn from_reflect(reflect: &(dyn PartialReflect + 'static)) -> Option<UiScale>
fn from_reflect(reflect: &(dyn PartialReflect + 'static)) -> Option<UiScale>
Self
from a reflected value.Source§fn take_from_reflect(
reflect: Box<dyn PartialReflect>,
) -> Result<Self, Box<dyn PartialReflect>>
fn take_from_reflect( reflect: Box<dyn PartialReflect>, ) -> Result<Self, Box<dyn PartialReflect>>
Self
using,
constructing the value using from_reflect
if that fails. Read moreSource§impl GetTypeRegistration for UiScale
impl GetTypeRegistration for UiScale
Source§fn get_type_registration() -> TypeRegistration
fn get_type_registration() -> TypeRegistration
TypeRegistration
for this type.Source§fn register_type_dependencies(registry: &mut TypeRegistry)
fn register_type_dependencies(registry: &mut TypeRegistry)
Source§impl PartialReflect for UiScale
impl PartialReflect for UiScale
Source§fn get_represented_type_info(&self) -> Option<&'static TypeInfo>
fn get_represented_type_info(&self) -> Option<&'static TypeInfo>
Source§fn try_apply(
&mut self,
value: &(dyn PartialReflect + 'static),
) -> Result<(), ApplyError>
fn try_apply( &mut self, value: &(dyn PartialReflect + 'static), ) -> Result<(), ApplyError>
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fn reflect_kind(&self) -> ReflectKind
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fn reflect_ref(&self) -> ReflectRef<'_>
Source§fn reflect_mut(&mut self) -> ReflectMut<'_>
fn reflect_mut(&mut self) -> ReflectMut<'_>
Source§fn reflect_owned(self: Box<UiScale>) -> ReflectOwned
fn reflect_owned(self: Box<UiScale>) -> ReflectOwned
Source§fn try_into_reflect(
self: Box<UiScale>,
) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>
fn try_into_reflect( self: Box<UiScale>, ) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>
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fn try_as_reflect(&self) -> Option<&(dyn Reflect + 'static)>
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fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>
Source§fn into_partial_reflect(self: Box<UiScale>) -> Box<dyn PartialReflect>
fn into_partial_reflect(self: Box<UiScale>) -> Box<dyn PartialReflect>
Source§fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)
fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)
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&self,
value: &(dyn PartialReflect + 'static),
) -> Option<bool>
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fn reflect_hash(&self) -> Option<u64>
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fn is_dynamic(&self) -> bool
Source§impl Reflect for UiScale
impl Reflect for UiScale
Source§fn into_any(self: Box<UiScale>) -> Box<dyn Any>
fn into_any(self: Box<UiScale>) -> Box<dyn Any>
Box<dyn Any>
. Read moreSource§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
&mut dyn Any
. Read moreSource§fn into_reflect(self: Box<UiScale>) -> Box<dyn Reflect>
fn into_reflect(self: Box<UiScale>) -> Box<dyn Reflect>
Source§fn as_reflect(&self) -> &(dyn Reflect + 'static)
fn as_reflect(&self) -> &(dyn Reflect + 'static)
Source§fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)
fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)
Source§impl TupleStruct for UiScale
impl TupleStruct for UiScale
Source§fn field(&self, index: usize) -> Option<&(dyn PartialReflect + 'static)>
fn field(&self, index: usize) -> Option<&(dyn PartialReflect + 'static)>
index
as a
&dyn Reflect
.Source§fn field_mut(
&mut self,
index: usize,
) -> Option<&mut (dyn PartialReflect + 'static)>
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fn get_represented_tuple_struct_info(&self) -> Option<&'static TupleStructInfo>
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if TypeInfo
is not available.Source§impl TypePath for UiScale
impl TypePath for UiScale
Source§fn type_path() -> &'static str
fn type_path() -> &'static str
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fn short_type_path() -> &'static str
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fn type_ident() -> Option<&'static str>
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fn crate_name() -> Option<&'static str>
impl Resource for UiScale
Auto Trait Implementations§
impl Freeze for UiScale
impl RefUnwindSafe for UiScale
impl Send for UiScale
impl Sync for UiScale
impl Unpin for UiScale
impl UnwindSafe for UiScale
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