Struct CoordFixed 

pub struct CoordFixed {
    pub ratio: f64,
}

Fixed-ratio coordinate system — maintains aspect ratio.

Fields

ratio: f64

Implementations

impl CoordFixed

pub fn new(ratio: f64) -> Self

Trait Implementations

impl Coord for CoordFixed

fn transform(&self, point: (f64, f64), plot_area: &Rect) -> (f64, f64)

Transform normalized (0..1, 0..1) coordinates to pixel coordinates.

fn gridlines(&self) -> bool

Whether to draw grid lines.

fn is_flipped(&self) -> bool

Whether this coordinate system flips X and Y.

fn is_polar(&self) -> bool

Whether this is a non-linear polar system (bars become radial sectors, so geoms that draw rectangles must tessellate their edges into an arc).

fn polar_theta_is_x(&self) -> bool

For a polar system, whether the x aesthetic maps to angle (theta="x"). When false (theta="y", pies), the y aesthetic is the angle, so sector tessellation must sweep the y edge instead of the x edge.

fn zoom_x(&self) -> Option<(f64, f64)>

Zoom limits for x-axis (data coordinates). Clips viewport without filtering data.

fn zoom_y(&self) -> Option<(f64, f64)>

Zoom limits for y-axis (data coordinates). Clips viewport without filtering data.

fn set_domains(&mut self, _x: Option<AxisSpan>, _y: Option<AxisSpan>)

Supply the trained x/y axis spans after scale training. Coordinate systems that warp the axis (e.g. coord_trans) need this to map a normalized position back to a data value. Default is a no-op.

fn is_radar(&self) -> bool

Radar coordinates: straight segments between spokes, closed paths, and ring/spoke guides instead of cartesian axes. Default false.

fn train_scales(&mut self, _scales: &mut ScaleSet)

Inspect / adjust the trained scales once training is complete (e.g. coord_radar anchors the radius at 0 and counts its spokes). Default: no-op.