Struct PlotTransform

pub struct PlotTransform { /* private fields */ }

Contains the screen rectangle and the plot bounds and provides methods to transform between them.

Implementations

impl PlotTransform

pub fn new( frame: Rect, bounds: PlotBounds, x_centered: bool, y_centered: bool, ) -> PlotTransform

pub fn frame(&self) -> &Rect

ui-space rectangle.

pub fn bounds(&self) -> &PlotBounds

Plot-space bounds.

pub fn set_bounds(&mut self, bounds: PlotBounds)

pub fn translate_bounds(&mut self, delta_pos: Vec2)

pub fn zoom(&mut self, zoom_factor: Vec2, center: Pos2)

Zoom by a relative factor with the given screen position as center.

pub fn position_from_point_x(&self, value: f64) -> f32

pub fn position_from_point_y(&self, value: f64) -> f32

pub fn position_from_point(&self, value: &PlotPoint) -> Pos2

Screen/ui position from point on plot.

pub fn value_from_position(&self, pos: Pos2) -> PlotPoint

Plot point from screen/ui position.

pub fn rect_from_values(&self, value1: &PlotPoint, value2: &PlotPoint) -> Rect

Transform a rectangle of plot values to a screen-coordinate rectangle.

This typically means that the rect is mirrored vertically (top becomes bottom and vice versa), since the plot’s coordinate system has +Y up, while egui has +Y down.

pub fn dpos_dvalue_x(&self) -> f64

delta position / delta value = how many ui points per step in the X axis in “plot space”

pub fn dpos_dvalue_y(&self) -> f64

delta position / delta value = how many ui points per step in the Y axis in “plot space”

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

delta position / delta value = how many ui points per step in “plot space”

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

delta value / delta position = how much ground do we cover in “plot space” per ui point?

Trait Implementations

impl Clone for PlotTransform

fn clone(&self) -> PlotTransform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PlotTransform

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

Formats the value using the given formatter.

impl Copy for PlotTransform