Enum scarlet::colormap::NormalizeMapping

pub enum NormalizeMapping {
    Linear,
    Cbrt,
    Generic(fn(_: f64) -> f64),
}

A struct that describes different transformations of the numbers between 0 and 1 to themselves, used for controlling the linearity or nonlinearity of gradients.

Variants

Linear

A normal linear mapping: each number maps to itself.

Cbrt

A cube root mapping: 1/8 would map to 1/2, for example. This has the effect of emphasizing the differences in the low end of the range, which is useful for some data like sound intensity that isn't perceived linearly.

Generic(fn(_: f64) -> f64)

A generic mapping, taking as a value any function or closure that maps the integers from 0-1 to the same range. This should never fail.

Methods

impl NormalizeMapping

fn normalize(&self, x: f64) -> f64

Performs the given mapping on an input number, with undefined behavior or panics if the given number is outside of the range (0, 1). Given an input between 0 and 1, should always output another number in the same range.

Trait Implementations

impl Debug for NormalizeMapping

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl PartialEq for NormalizeMapping

fn eq(&self, __arg_0: &NormalizeMapping) -> bool

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

fn ne(&self, __arg_0: &NormalizeMapping) -> bool

This method tests for !=.

impl Clone for NormalizeMapping

fn clone(&self) -> NormalizeMapping

Returns a copy of the value.

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

Performs copy-assignment from source.