Struct DataTransform 

pub struct DataTransform { /* private fields */ }

High-level data-to-screen transform.

Combines a viewport (for the projection matrix) with an optional data range mapping. When no data range is set, data coordinates equal screen coordinates (identity transform).

Example

// Identity transform: data coords = screen pixels
let transform = DataTransform::identity(viewport);

// Data range transform: maps data [0..100, 0..50] to a 400x300 plot area
let transform = DataTransform::from_data_range(viewport, DataRangeParams {
    plot_x: 80.0, plot_y: 20.0,
    plot_width: 400.0, plot_height: 300.0,
    data_x_min: 0.0, data_x_max: 100.0,
    data_y_min: 0.0, data_y_max: 50.0,
});

renderer.render_transformed(pass, &transform);

Implementations

impl DataTransform

pub fn identity(viewport: Viewport) -> Self

Create an identity transform (data coordinates = screen coordinates).

pub fn from_data_range(viewport: Viewport, params: DataRangeParams) -> Self

Create a transform that maps data coordinates to a plot area on screen.

Data point (data_x, data_y) maps to screen position:

• screen_x = plot_x + (data_x - data_x_min) / (data_x_max - data_x_min) * plot_width
• screen_y = plot_y + plot_height - (data_y - data_y_min) / (data_y_max - data_y_min) * plot_height

Y is flipped because screen Y goes downward but data Y typically goes upward.

Trait Implementations

impl Clone for DataTransform

fn clone(&self) -> DataTransform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DataTransform

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

Formats the value using the given formatter.

impl Copy for DataTransform