Struct ColorRule 

pub struct ColorRule {
    pub map: Colormap,
    pub range: (f32, f32),
    pub below: OutOfRange,
    pub above: OutOfRange,
    pub center: Option<f32>,
    pub base: [u8; 4],
    pub nan: [u8; 4],
}

How a scalar field is turned into colours.

Fields

map: Colormap

The colormap.

range: (f32, f32)

(lo, hi): values mapped onto the colormap; lo < hi, both finite.

below: OutOfRange

Colour rule for values below lo (and -∞).

above: OutOfRange

Colour rule for values above hi (and +∞).

center: Option<f32>

A value pinned to the middle of the colormap, within range.

base: [u8; 4]

The colour of OutOfRange::Base.

nan: [u8; 4]

The colour of NaN values.

Implementations

impl ColorRule

pub fn validate(&self) -> Result<(), FieldsError>

Checks the rule.

Errors

FieldsError::InvalidInput if range has a non-finite end or lo >= hi, if center is non-finite or outside range, or if a custom colormap has fewer than two stops or stop positions that are not finite, outside [0, 1] or not strictly increasing.

Trait Implementations

impl Clone for ColorRule

fn clone(&self) -> ColorRule

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColorRule

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

Formats the value using the given formatter.

impl PartialEq for ColorRule

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ColorRule