Struct Line2 

pub struct Line2 {
    pub slope: f64,
    pub intercept: f64,
    pub is_vertical: bool,
    pub x_const: f64,
}

A 2-D line in slope-intercept form. Vertical lines have is_vertical = true and use x_const instead of slope/intercept.

Fields

slope: f64

Slope m in y = m·x + b. Unused for vertical lines.

intercept: f64

Intercept b in y = m·x + b. Unused for vertical lines.

is_vertical: bool

True for a vertical line x = x_const.

x_const: f64

For vertical lines: the constant x-value.

Implementations

impl Line2

pub fn new(slope: f64, intercept: f64) -> Self

Create a non-vertical line y = slope·x + intercept.

pub fn vertical(x_const: f64) -> Self

Create a vertical line x = x_const.

pub fn through_points(a: Point2, b: Point2) -> Self

Create a line through two points.

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

Evaluate the line at x: returns y = slope·x + intercept, or x_const for vertical lines (in which case x should equal x_const).

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

Evaluate the x-value at a given y: returns x = (y - b) / m, or x_const for vertical lines.

pub fn is_parallel(&self, other: &Line2) -> bool

Is this line parallel to other?

Trait Implementations

impl Clone for Line2

fn clone(&self) -> Line2

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Line2

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

Formats the value using the given formatter.

impl PartialEq for Line2

fn eq(&self, other: &Line2) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Line2

impl StructuralPartialEq for Line2