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use crate::coord::ranged1d::{KeyPointHint, Ranged, ReversibleRanged};
use crate::coord::{CoordTranslate, ReverseCoordTranslate};
use crate::style::ShapeStyle;
use plotters_backend::{BackendCoord, DrawingBackend, DrawingErrorKind};
use std::ops::Range;
#[derive(Clone)]
pub struct Cartesian2d<X: Ranged, Y: Ranged> {
logic_x: X,
logic_y: Y,
back_x: (i32, i32),
back_y: (i32, i32),
}
impl<X: Ranged, Y: Ranged> Cartesian2d<X, Y> {
pub fn new<IntoX: Into<X>, IntoY: Into<Y>>(
logic_x: IntoX,
logic_y: IntoY,
actual: (Range<i32>, Range<i32>),
) -> Self {
Self {
logic_x: logic_x.into(),
logic_y: logic_y.into(),
back_x: (actual.0.start, actual.0.end),
back_y: (actual.1.start, actual.1.end),
}
}
pub fn draw_mesh<
E,
DrawMesh: FnMut(MeshLine<X, Y>) -> Result<(), E>,
XH: KeyPointHint,
YH: KeyPointHint,
>(
&self,
h_limit: YH,
v_limit: XH,
mut draw_mesh: DrawMesh,
) -> Result<(), E> {
let (xkp, ykp) = (
self.logic_x.key_points(v_limit),
self.logic_y.key_points(h_limit),
);
for logic_x in xkp {
let x = self.logic_x.map(&logic_x, self.back_x);
draw_mesh(MeshLine::XMesh(
(x, self.back_y.0),
(x, self.back_y.1),
&logic_x,
))?;
}
for logic_y in ykp {
let y = self.logic_y.map(&logic_y, self.back_y);
draw_mesh(MeshLine::YMesh(
(self.back_x.0, y),
(self.back_x.1, y),
&logic_y,
))?;
}
Ok(())
}
pub fn get_x_range(&self) -> Range<X::ValueType> {
self.logic_x.range()
}
pub fn get_y_range(&self) -> Range<Y::ValueType> {
self.logic_y.range()
}
pub fn get_x_axis_pixel_range(&self) -> Range<i32> {
self.logic_x.axis_pixel_range(self.back_x)
}
pub fn get_y_axis_pixel_range(&self) -> Range<i32> {
self.logic_y.axis_pixel_range(self.back_y)
}
pub fn x_spec(&self) -> &X {
&self.logic_x
}
pub fn y_spec(&self) -> &Y {
&self.logic_y
}
}
impl<X: Ranged, Y: Ranged> CoordTranslate for Cartesian2d<X, Y> {
type From = (X::ValueType, Y::ValueType);
fn translate(&self, from: &Self::From) -> BackendCoord {
(
self.logic_x.map(&from.0, self.back_x),
self.logic_y.map(&from.1, self.back_y),
)
}
}
impl<X: ReversibleRanged, Y: ReversibleRanged> ReverseCoordTranslate for Cartesian2d<X, Y> {
fn reverse_translate(&self, input: BackendCoord) -> Option<Self::From> {
Some((
self.logic_x.unmap(input.0, self.back_x)?,
self.logic_y.unmap(input.1, self.back_y)?,
))
}
}
pub enum MeshLine<'a, X: Ranged, Y: Ranged> {
XMesh(BackendCoord, BackendCoord, &'a X::ValueType),
YMesh(BackendCoord, BackendCoord, &'a Y::ValueType),
}
impl<'a, X: Ranged, Y: Ranged> MeshLine<'a, X, Y> {
pub fn draw<DB: DrawingBackend>(
&self,
backend: &mut DB,
style: &ShapeStyle,
) -> Result<(), DrawingErrorKind<DB::ErrorType>> {
let (&left, &right) = match self {
MeshLine::XMesh(a, b, _) => (a, b),
MeshLine::YMesh(a, b, _) => (a, b),
};
backend.draw_line(left, right, style)
}
}