Struct CanvasOverlay 

pub struct CanvasOverlay {
    pub w: f64,
    pub h: f64,
    pub origin: [f64; 2],
    pub rescale: f64,
}

The page frame of the SVG render_svg draws (issue #19): what maps a point of the compiled drawing — PinOverlay::x/y, in pic inches with y up — to SVG user units (the root viewBox space, 96 per inch, y down). Exactly:

sx = (x + origin[0]) · 96
sy = (h − (y + origin[1])) · 96

(Self::to_svg). This is rpic’s own frame — the canvas of its scene export (origin is where the pic origin sits, measured from the page’s lower-left corner; w/h the page size in inches, margins and stroke padding included, so the viewBox is 0 0 w·96 h·96), computed here at full precision instead of the scene’s six decimals. Note the signs (+ origin) and that rescale does not enter: the drawing’s coordinates, pins included, are already past the whole-picture rescale.

Fields

w: f64

Page width and height in inches (viewBox = 0 0 w·96 h·96).

h: f64

origin: [f64; 2]

The pic origin, in inches from the page’s lower-left corner.

rescale: f64

The whole-picture rescale factor (.PS <width>, maxpswid, maxpsht; 1 when none) — informational: the shapes and pins already carry it.

Implementations

impl CanvasOverlay

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

SVG user units of the drawing point (x, y) (pic inches).

Trait Implementations

impl Clone for CanvasOverlay

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CanvasOverlay

impl Debug for CanvasOverlay

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

Formats the value using the given formatter.

impl Default for CanvasOverlay

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for CanvasOverlay

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for CanvasOverlay