Struct nannou::geom::range::Range

pub struct Range<S = Default> {
    pub start: S,
    pub end: S,
}

Some start and end position along a single axis.

As an example, a Rect is made up of two Ranges; one along the x axis, and one along the y axis.

Fields

start: S

The start of some Range along an axis.

end: S

The end of some Range along an axis.

Methods

impl<S> Range<S> where
    S: BaseNum, 

pub fn new(start: S, end: S) -> Self

Construct a new Range from a given range, i.e. Range::new(start, end).

Examples

use nannou::geom::Range;

assert_eq!(Range { start: 0.0, end: 10.0 }, Range::new(0.0, 10.0));

pub fn from_pos_and_len(pos: S, len: S) -> Self

Construct a new Range from a given length and its centered position.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 10.0), Range::from_pos_and_len(5.0, 10.0));
assert_eq!(Range::new(-5.0, 1.0), Range::from_pos_and_len(-2.0, 6.0));
assert_eq!(Range::new(-100.0, 200.0), Range::from_pos_and_len(50.0, 300.0));

pub fn magnitude(&self) -> S

The start value subtracted from the end value.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(-5.0, 5.0).magnitude(), 10.0);
assert_eq!(Range::new(5.0, -5.0).magnitude(), -10.0);
assert_eq!(Range::new(15.0, 10.0).magnitude(), -5.0);

pub fn len(&self) -> S where
    S: Neg<Output = S>, 

The absolute length of the Range aka the absolute magnitude.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(-5.0, 5.0).len(), 10.0);
assert_eq!(Range::new(5.0, -5.0).len(), 10.0);
assert_eq!(Range::new(15.0, 10.0).len(), 5.0);

pub fn middle(&self) -> S

Return the value directly between the start and end values.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(-5.0, 5.0).middle(), 0.0);
assert_eq!(Range::new(5.0, -5.0).middle(), 0.0);
assert_eq!(Range::new(10.0, 15.0).middle(), 12.5);
assert_eq!(Range::new(20.0, 40.0).middle(), 30.0);
assert_eq!(Range::new(20.0, -40.0).middle(), -10.0);

pub fn invert(self) -> Self

The current range with its start and end values swapped.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(-5.0, 5.0).invert(), Range::new(5.0, -5.0));
assert_eq!(Range::new(-10.0, 10.0).invert(), Range::new(10.0, -10.0));
assert_eq!(Range::new(0.0, 7.25).invert(), Range::new(7.25, 0.0));
assert_eq!(Range::new(5.0, 1.0).invert(), Range::new(1.0, 5.0));

pub fn map_value(&self, value: S, other: &Self) -> S

Map the given scalar from Self to some other given Range.

Examples

use nannou::geom::Range;

let a = Range::new(0.0, 5.0);

let b = Range::new(0.0, 10.0);
assert_eq!(a.map_value(2.5, &b), 5.0);
assert_eq!(a.map_value(0.0, &b), 0.0);
assert_eq!(a.map_value(5.0, &b), 10.0);
assert_eq!(a.map_value(-5.0, &b), -10.0);
assert_eq!(a.map_value(10.0, &b), 20.0);

let c = Range::new(10.0, -10.0);
assert_eq!(a.map_value(2.5, &c), 0.0);
assert_eq!(a.map_value(0.0, &c), 10.0);
assert_eq!(a.map_value(5.0, &c), -10.0);
assert_eq!(a.map_value(-5.0, &c), 30.0);
assert_eq!(a.map_value(10.0, &c), -30.0);

pub fn lerp(&self, amount: S) -> S

Interpolates the Range using the given weight.

Examples

use nannou::geom::Range;

let r = Range::new(-5.0, 5.0);
assert_eq!(r.lerp(0.0), -5.0);
assert_eq!(r.lerp(1.0), 5.0);
assert_eq!(r.lerp(0.5), 0.0);

pub fn shift(self, amount: S) -> Self

Shift the Range start and end points by a given scalar.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 5.0).shift(5.0), Range::new(5.0, 10.0));
assert_eq!(Range::new(0.0, 5.0).shift(-5.0), Range::new(-5.0, 0.0));
assert_eq!(Range::new(5.0, -5.0).shift(-5.0), Range::new(0.0, -10.0));

pub fn direction(&self) -> S where
    S: Neg<Output = S> + One + Zero, 

The direction of the Range represented as a normalised scalar.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 5.0).direction(), 1.0);
assert_eq!(Range::new(0.0, 0.0).direction(), 0.0);
assert_eq!(Range::new(0.0, -5.0).direction(), -1.0);

pub fn undirected(self) -> Self

Deprecated:

use absolute instead

Converts the Range to an undirected Range. By ensuring that start <= end.

If start > end, then the start and end points will be swapped.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 5.0).undirected(), Range::new(0.0, 5.0));
assert_eq!(Range::new(5.0, 1.0).undirected(), Range::new(1.0, 5.0));
assert_eq!(Range::new(10.0, -10.0).undirected(), Range::new(-10.0, 10.0));

pub fn absolute(self) -> Self

Converts the Range to an absolute Range by ensuring that start <= end.

If start > end, then the start and end points will be swapped.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 5.0).absolute(), Range::new(0.0, 5.0));
assert_eq!(Range::new(5.0, 1.0).absolute(), Range::new(1.0, 5.0));
assert_eq!(Range::new(10.0, -10.0).absolute(), Range::new(-10.0, 10.0));

pub fn max(self, other: Self) -> Self where
    S: Float, 

The Range that encompasses both self and the given Range.

The returned Range's start will always be <= its end.

Examples

use nannou::geom::Range;

let a = Range::new(0.0, 3.0);
let b = Range::new(7.0, 10.0);
assert_eq!(a.max(b), Range::new(0.0, 10.0));

let c = Range::new(-20.0, -30.0);
let d = Range::new(5.0, -7.5);
assert_eq!(c.max(d), Range::new(-30.0, 5.0));

pub fn overlap(self, other: Self) -> Option<Self>

The Range that represents the range of the overlap between two Ranges if there is some.

Note that If one end of self aligns exactly with the opposite end of other, Some Range will be returned with a magnitude of 0.0. This is useful for algorithms that involve calculating the visibility of widgets, as it allows for including widgets whose bounding box may be a one dimensional straight line.

The returned Range's start will always be <= its end.

Examples

use nannou::geom::Range;

let a = Range::new(0.0, 6.0);
let b = Range::new(4.0, 10.0);
assert_eq!(a.overlap(b), Some(Range::new(4.0, 6.0)));

let c = Range::new(10.0, -30.0);
let d = Range::new(-5.0, 20.0);
assert_eq!(c.overlap(d), Some(Range::new(-5.0, 10.0)));

let e = Range::new(0.0, 2.5);
let f = Range::new(50.0, 100.0);
assert_eq!(e.overlap(f), None);

pub fn max_directed(self, other: Self) -> Self where
    S: Float, 

The Range that encompasses both self and the given Range.

The same as Range::max but retains self's original direction.

Examples

use nannou::geom::Range;

let a = Range::new(0.0, 3.0);
let b = Range::new(7.0, 10.0);
assert_eq!(a.max_directed(b), Range::new(0.0, 10.0));

let c = Range::new(-20.0, -30.0);
let d = Range::new(5.0, -7.5);
assert_eq!(c.max_directed(d), Range::new(5.0, -30.0));

pub fn contains(&self, pos: S) -> bool

Is the given scalar within our range.

Examples

use nannou::geom::Range;

let range = Range::new(0.0, 10.0);
assert!(range.contains(5.0));
assert!(!range.contains(12.0));
assert!(!range.contains(-1.0));
assert!(range.contains(0.0));
assert!(range.contains(10.0));

pub fn round(self) -> Self where
    S: Float, 

Round the values at both ends of the Range and return the result.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.25, 9.5).round(), Range::new(0.0, 10.0));
assert_eq!(Range::new(4.95, -5.3).round(), Range::new(5.0, -5.0));

pub fn floor(self) -> Self where
    S: Float, 

Floor the values at both ends of the Range and return the result.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.25, 9.5).floor(), Range::new(0.0, 9.0));
assert_eq!(Range::new(4.95, -5.3).floor(), Range::new(4.0, -6.0));

pub fn pad_start(self, pad: S) -> Self where
    S: Neg<Output = S>, 

The Range with some padding given to the start value.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 10.0).pad_start(2.0), Range::new(2.0, 10.0));
assert_eq!(Range::new(10.0, 0.0).pad_start(2.0), Range::new(8.0, 0.0));

pub fn pad_end(self, pad: S) -> Self where
    S: Neg<Output = S>, 

The Range with some padding given to the end value.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 10.0).pad_end(2.0), Range::new(0.0, 8.0));
assert_eq!(Range::new(10.0, 0.0).pad_end(2.0), Range::new(10.0, 2.0));

pub fn pad(self, pad: S) -> Self where
    S: Neg<Output = S>, 

The Range with some given padding to be applied to each end.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 10.0).pad(2.0), Range::new(2.0, 8.0));
assert_eq!(Range::new(10.0, 0.0).pad(2.0), Range::new(8.0, 2.0));

pub fn pad_ends(self, start: S, end: S) -> Self where
    S: Neg<Output = S>, 

The Range with some padding given for each end.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 10.0).pad_ends(1.0, 2.0), Range::new(1.0, 8.0));
assert_eq!(Range::new(10.0, 0.0).pad_ends(4.0, 3.0), Range::new(6.0, 3.0));

pub fn clamp_value(&self, value: S) -> S

Clamp the given value to the range.

Examples

use nannou::geom::Range;

assert_eq!(Range::new(0.0, 5.0).clamp_value(7.0), 5.0);
assert_eq!(Range::new(5.0, -2.5).clamp_value(-3.0), -2.5);
assert_eq!(Range::new(5.0, 10.0).clamp_value(0.0), 5.0);

pub fn stretch_to_value(self, value: S) -> Self

Stretch the end that is closest to the given value only if it lies outside the Range.

The resulting Range will retain the direction of the original range.

Examples

use nannou::geom::Range;

let a = Range::new(2.5, 5.0);
assert_eq!(a.stretch_to_value(10.0), Range::new(2.5, 10.0));
assert_eq!(a.stretch_to_value(0.0), Range::new(0.0, 5.0));

let b = Range::new(0.0, -5.0);
assert_eq!(b.stretch_to_value(10.0), Range::new(10.0, -5.0));
assert_eq!(b.stretch_to_value(-10.0), Range::new(0.0, -10.0));

pub fn has_same_direction(self, other: Self) -> bool

Does self have the same direction as other.

Examples

use nannou::geom::Range;

assert!(Range::new(0.0, 1.0).has_same_direction(Range::new(100.0, 200.0)));
assert!(Range::new(0.0, -5.0).has_same_direction(Range::new(-2.5, -6.0)));
assert!(!Range::new(0.0, 5.0).has_same_direction(Range::new(2.5, -2.5)));

pub fn align_start_of(self, other: Self) -> Self

Align the start of self to the start of the other Range.

If the direction of other is different to self, self's end will be aligned to the start of other instead.

Examples

use nannou::geom::Range;

let a = Range::new(2.5, 7.5);
let b = Range::new(0.0, 10.0);
assert_eq!(a.align_start_of(b), Range::new(0.0, 5.0));
assert_eq!(b.align_start_of(a), Range::new(2.5, 12.5));

let c = Range::new(2.5, -2.5);
let d = Range::new(-5.0, 5.0);
assert_eq!(c.align_start_of(d), Range::new(0.0, -5.0));
assert_eq!(d.align_start_of(c), Range::new(-7.5, 2.5));

pub fn align_end_of(self, other: Self) -> Self

Align the end of self to the end of the other Range.

If the direction of other is different to self, self's start will be aligned to the end of other instead.

Examples

use nannou::geom::Range;

let a = Range::new(2.5, 7.5);
let b = Range::new(0.0, 10.0);
assert_eq!(a.align_end_of(b), Range::new(5.0, 10.0));
assert_eq!(b.align_end_of(a), Range::new(-2.5, 7.5));

let c = Range::new(2.5, -2.5);
let d = Range::new(-5.0, 5.0);
assert_eq!(c.align_end_of(d), Range::new(5.0, 0.0));
assert_eq!(d.align_end_of(c), Range::new(-2.5, 7.5));

pub fn align_middle_of(self, other: Self) -> Self

Align the middle of self to the middle of the other Range.

Examples

use nannou::geom::Range;

let a = Range::new(0.0, 5.0);
let b = Range::new(0.0, 10.0);
assert_eq!(a.align_middle_of(b), Range::new(2.5, 7.5));
assert_eq!(b.align_middle_of(a), Range::new(-2.5, 7.5));

let c = Range::new(2.5, -2.5);
let d = Range::new(-10.0, 0.0);
assert_eq!(c.align_middle_of(d), Range::new(-2.5, -7.5));
assert_eq!(d.align_middle_of(c), Range::new(-5.0, 5.0));

pub fn align_after(self, other: Self) -> Self

Aligns the start of self with the end of other.

If the directions are opposite, aligns the end of self with the end of other.

Examples

use nannou::geom::Range;

let a = Range::new(2.5, 7.5);
let b = Range::new(0.0, 10.0);
assert_eq!(a.align_after(b), Range::new(10.0, 15.0));
assert_eq!(b.align_after(a), Range::new(7.5, 17.5));

let c = Range::new(2.5, -2.5);
let d = Range::new(-5.0, 5.0);
assert_eq!(c.align_after(d), Range::new(10.0, 5.0));
assert_eq!(d.align_after(c), Range::new(-12.5, -2.5));

pub fn align_before(self, other: Self) -> Self

Aligns the end of self with the start of other.

If the directions are opposite, aligns the start of self with the start of other.

Examples

use nannou::geom::Range;

let a = Range::new(2.5, 7.5);
let b = Range::new(0.0, 10.0);
assert_eq!(a.align_before(b), Range::new(-5.0, 0.0));
assert_eq!(b.align_before(a), Range::new(-7.5, 2.5));

let c = Range::new(2.5, -2.5);
let d = Range::new(-5.0, 5.0);
assert_eq!(c.align_before(d), Range::new(-5.0, -10.0));
assert_eq!(d.align_before(c), Range::new(2.5, 12.5));

pub fn align_to(self, align: Align, other: Self) -> Self

Align self to other along the x axis in accordance with the given Align variant.

pub fn closest_edge(&self, scalar: S) -> Edge

The closest Edge of self to the given scalar.

Returns Start if the distance between both Edges is equal.

Examples

use nannou::geom::{Edge, Range};

assert_eq!(Range::new(0.0, 10.0).closest_edge(4.0), Edge::Start);
assert_eq!(Range::new(0.0, 10.0).closest_edge(7.0), Edge::End);
assert_eq!(Range::new(0.0, 10.0).closest_edge(5.0), Edge::Start);

Trait Implementations

impl<S: Clone> Clone for Range<S>

fn clone(&self) -> Range<S>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<S: Copy> Copy for Range<S>

impl<S: Debug> Debug for Range<S>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<S: PartialEq> PartialEq<Range<S>> for Range<S>

fn eq(&self, other: &Range<S>) -> bool

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

fn ne(&self, other: &Range<S>) -> bool

This method tests for !=.

impl<S: PartialOrd> PartialOrd<Range<S>> for Range<S>

fn partial_cmp(&self, other: &Range<S>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Range<S>) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Range<S>) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Range<S>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Range<S>) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<S> StructuralPartialEq for Range<S>