Struct Graph

pub struct Graph {
    pub expressions: Vec<AnalyzedExpr>,
    pub points: Vec<Point<f64>>,
    pub options: GraphOptions,
}

A graph containing expressions and points to draw.

See the module-level documentation for more information.

Fields

expressions: Vec<AnalyzedExpr>

The expressions to draw.

points: Vec<Point<f64>>

The points to draw.

options: GraphOptions

The rendering options for the graph.

Implementations

impl Graph

pub fn new() -> Graph

Create a new, empty graph.

pub fn with_opts(options: GraphOptions) -> Graph

Create a new graph with the given options.

pub fn add_expr(&mut self, expr: Expr) -> &mut Self

Add an expression to the graph.

Returns a mutable reference to the graph to allow chaining.

pub fn try_add_expr(&mut self, expr: &str) -> Result<&mut Self, Vec<Error>>

Tries to parse the given expression and add it to the graph.

Returns a mutable reference to the graph to allow chaining.

pub fn add_analyzed_expr(&mut self, expr: AnalyzedExpr) -> &mut Self

Adds an expression that has already been analyzed to the graph.

Returns a mutable reference to the graph to allow chaining.

pub fn add_point(&mut self, point: impl Into<Point<f64>>) -> &mut Self

Add a point to the graph.

Returns a mutable reference to the graph to allow chaining.

pub fn center_on_points(&mut self) -> &mut Self

Center the graph on the points in the graph and scale it so that all points are visible.

Returns a mutable reference to the graph to allow chaining.

pub fn draw(&self) -> Result<ImageSurface, Error>

Creates an ImageSurface with the graph’s canvas size and draws the graph to it.

The resulting ImageSurface can be written to a file or manipulated further.

Trait Implementations

impl Clone for Graph

fn clone(&self) -> Graph

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Graph

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

Formats the value using the given formatter.

impl Default for Graph

fn default() -> Graph

Returns the “default value” for a type.