Struct plotters::coord::combinators::WithKeyPointMethod

pub struct WithKeyPointMethod<R: Ranged> { /* private fields */ }

The coordinate decorator that allows customized keypoint algorithms. Normally, all the coordinate spec implements its own key point algorith But this decorator allows you override the pre-defined key point algorithm.

To use this decorator, see BindKeyPointMethod::with_key_point_func

Implementations

impl<R: Ranged> WithKeyPointMethod<R>

pub fn with_light_point_func<F: Fn(usize) -> Vec<R::ValueType> + 'static>(
    self,
    func: F
) -> Self

Define the light key point algorithm, by default this returns an empty set

Trait Implementations

impl<R: DiscreteRanged> DiscreteRanged for WithKeyPointMethod<R>

fn size(&self) -> usize

Get the number of element in the range Note: we assume that all the ranged discrete coordinate has finite value

fn index_of(&self, value: &Self::ValueType) -> Option<usize>

Map a value to the index

fn from_index(&self, index: usize) -> Option<Self::ValueType>

Reverse map the index to the value

fn values(&self) -> DiscreteValueIter<'_, Self> where
    Self: Sized, 

Return a iterator that iterates over the all possible values

fn previous(&self, value: &Self::ValueType) -> Option<Self::ValueType>

Returns the previous value in this range

fn next(&self, value: &Self::ValueType) -> Option<Self::ValueType>

Returns the next value in this range

impl<R: Ranged> Ranged for WithKeyPointMethod<R>

type ValueType = <R as Ranged>::ValueType

The type of this value in this range specification

type FormatOption = <R as Ranged>::FormatOption

This marker decides if Plotters default ValueFormatter implementation should be used. This associated type can be one of the following two types:

fn range(&self) -> Range<Self::ValueType>

Get the range of this value

fn map(&self, value: &Self::ValueType, limit: (i32, i32)) -> i32

This function maps the value to i32, which is the drawing coordinate

fn key_points<Hint: KeyPointHint>(&self, hint: Hint) -> Vec<Self::ValueType>

This function gives the key points that we can draw a grid based on this

fn axis_pixel_range(&self, limit: (i32, i32)) -> Range<i32>

This function provides the on-axis part of its range