Struct re_viewer::blueprint::validation_gen::ForceDistance

#[repr(transparent)]
pub struct ForceDistance(pub Float64);

Component: The target distance between two nodes.

This is helpful to scale the layout, for example if long labels are involved.

Tuple Fields

0: Float64

Methods from Deref<Target = f64>

pub const RADIX: u32 = 2u32

pub const MANTISSA_DIGITS: u32 = 53u32

pub const DIGITS: u32 = 15u32

pub const EPSILON: f64 = 2.2204460492503131E-16f64

pub const MIN: f64 = -1.7976931348623157E+308f64

pub const MIN_POSITIVE: f64 = 2.2250738585072014E-308f64

pub const MAX: f64 = 1.7976931348623157E+308f64

pub const MIN_EXP: i32 = -1_021i32

pub const MAX_EXP: i32 = 1_024i32

pub const MIN_10_EXP: i32 = -307i32

pub const MAX_10_EXP: i32 = 308i32

pub const NAN: f64 = NaN_f64

pub const INFINITY: f64 = +Inf_f64

pub const NEG_INFINITY: f64 = -Inf_f64

pub fn total_cmp(&self, other: &f64) -> Ordering

Return 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 f64. 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: f64,
}

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: f64::INFINITY },
    GoodBoy { name: "Abs. Unit".to_owned(), weight: f64::NAN },
    GoodBoy { name: "Floaty".to_owned(), weight: -5.0 },
];

bois.sort_by(|a, b| a.weight.total_cmp(&b.weight));

// `f64::NAN` could be positive or negative, which will affect the sort order.
if f64::NAN.is_sign_negative() {
    assert!(bois.into_iter().map(|b| b.weight)
        .zip([f64::NAN, -5.0, 0.1, 10.0, 99.0, f64::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, f64::INFINITY, f64::NAN].iter())
        .all(|(a, b)| a.to_bits() == b.to_bits()))
}

Trait Implementations

impl Borrow<Float64> for ForceDistance

fn borrow(&self) -> &Float64

Immutably borrows from an owned value.

impl Clone for ForceDistance

fn clone(&self) -> ForceDistance

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Component for ForceDistance

fn descriptor() -> ComponentDescriptor

Returns the complete ComponentDescriptor for this Component.

fn name() -> ComponentName

The fully-qualified name of this component, e.g. rerun.components.Position2D.

impl Debug for ForceDistance

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for ForceDistance

fn default() -> ForceDistance

Returns the “default value” for a type.

impl Deref for ForceDistance

type Target = Float64

The resulting type after dereferencing.

fn deref(&self) -> &Float64

Dereferences the value.

impl DerefMut for ForceDistance

fn deref_mut(&mut self) -> &mut Float64

Mutably dereferences the value.

impl<T> From<T> for ForceDistance

where T: Into<Float64>,

fn from(v: T) -> ForceDistance

Converts to this type from the input type.

impl Loggable for ForceDistance

fn arrow_datatype() -> DataType

The underlying arrow::datatypes::DataType, excluding datatype extensions.

fn to_arrow_opt<'a>( data: impl IntoIterator<Item = Option<impl Into<Cow<'a, ForceDistance>>>>, ) -> Result<Arc<dyn Array>, SerializationError>

where ForceDistance: Clone + 'a,

Given an iterator of options of owned or reference values to the current Loggable, serializes them into an Arrow array.

fn from_arrow_opt( arrow_data: &dyn Array, ) -> Result<Vec<Option<ForceDistance>>, DeserializationError>

where ForceDistance: Sized,

Given an Arrow array, deserializes it into a collection of optional Loggables.

fn from_arrow( arrow_data: &dyn Array, ) -> Result<Vec<ForceDistance>, DeserializationError>

where ForceDistance: Sized,

Given an Arrow array, deserializes it into a collection of Loggables.

fn arrow_empty() -> Arc<dyn Array>

fn to_arrow<'a>( data: impl IntoIterator<Item = impl Into<Cow<'a, Self>>>, ) -> Result<Arc<dyn Array>, SerializationError>

where Self: 'a,

Given an iterator of owned or reference values to the current Loggable, serializes them into an Arrow array.

impl PartialEq for ForceDistance

fn eq(&self, other: &ForceDistance) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl SizeBytes for ForceDistance

fn heap_size_bytes(&self) -> u64

Returns how many bytes self uses on the heap.

fn is_pod() -> bool

Is Self just plain old data?

fn total_size_bytes(&self) -> u64

Returns the total size of self in bytes, accounting for both stack and heap space.

fn stack_size_bytes(&self) -> u64

Returns the total size of self on the stack, in bytes.

impl Copy for ForceDistance

impl StructuralPartialEq for ForceDistance