Struct Landscape 

pub struct Landscape { /* private fields */ }

A custom function, checked finite on the scan grid.

Implementations

impl Landscape

pub fn parse(source: &str) -> Result<Self, String>

Compiles source and scans it on the SCAN × SCAN grid of the box.

Errors

The source is not a formula, or the function is not finite at a grid point; the message says where.

pub fn new() -> Self

The default custom function.

pub fn source(&self) -> &str

The formula’s source text.

pub fn evaluate(&self, x: f64, y: f64) -> f64

Evaluates the function at (x, y).

pub const fn lowest(&self) -> &[[f64; 2]]

The scan grid’s lowest point (the first one on a tie).

pub const fn lowest_value(&self) -> f64

The scan grid’s lowest value.

pub const fn highest_value(&self) -> f64

The scan grid’s highest value.

pub fn ceiling(&self) -> f64

The loss a simulated training run starts from: a quarter of the grid’s range above its highest value, since the function may peak between grid points.

pub fn with_stroke( &self, kind: BrushKind, size: BrushSize, points: &[[f64; 2]], ) -> Result<Self, String>

Appends one Gaussian term per stroke point, each 0.4 of the grid’s current range deep (1 for a flat function) with the brush’s radius.

Errors

The stroke is empty, or the longer formula no longer fits MAX_LEN or fails to parse.

Trait Implementations

impl Clone for Landscape

fn clone(&self) -> Landscape

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Landscape

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

Formats the value using the given formatter.

impl Default for Landscape

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Landscape

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Landscape