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use crate::domain::Domain;
use crate::page::Rect;
use crate::point::Point;
use crate::private::SealedPlot;
use crate::scale::Numeric;
use std::fmt;
pub trait Plot: SealedPlot {}
pub struct Area<'a, P>
where
P: Point + 'a,
{
domain: &'a Domain<Numeric, Numeric>,
data: &'a [P],
}
pub struct Line<'a, P>
where
P: Point + 'a,
{
domain: &'a Domain<Numeric, Numeric>,
data: &'a [P],
}
pub struct Scatter<'a, P>
where
P: Point + 'a,
{
domain: &'a Domain<Numeric, Numeric>,
data: &'a [P],
}
impl<'a, P> Plot for Area<'a, P> where P: Point {}
impl<'a, P> SealedPlot for Area<'a, P>
where
P: Point,
{
fn display(
&self,
f: &mut fmt::Formatter,
num: usize,
rect: Rect,
) -> fmt::Result {
write!(f, "<path id='plot-{}' class='area' d='", num)?;
let rx = rect.x as f32;
let ry = rect.y as f32;
let rw = f32::from(rect.width);
let rh = f32::from(rect.height);
if let Some(pt) = self.data.first() {
let x = rx + rw * self.domain.x_norm(pt.x());
let y = ry + rh * self.domain.y_norm(0.0);
write!(f, "M{} {}", x, y)?;
}
for pt in self.data.iter() {
let x = rx + rw * self.domain.x_norm(pt.x());
let y = ry + rh * self.domain.y_norm(pt.y());
write!(f, " {} {}", x, y)?;
}
if let Some(pt) = self.data.last() {
let x = rx + rw * self.domain.x_norm(pt.x());
let y = ry + rh * self.domain.y_norm(0.0);
write!(f, " {} {}", x, y)?;
}
writeln!(f, "' />")
}
}
impl<'a, P> Area<'a, P>
where
P: Point,
{
pub fn new(domain: &'a Domain<Numeric, Numeric>, data: &'a [P]) -> Self {
Area { domain, data }
}
}
impl<'a, P> Plot for Line<'a, P> where P: Point {}
impl<'a, P> SealedPlot for Line<'a, P>
where
P: Point,
{
fn display(
&self,
f: &mut fmt::Formatter,
num: usize,
rect: Rect,
) -> fmt::Result {
write!(f, "<path id='plot-{}' class='line' d='", num)?;
let rx = rect.x as f32;
let ry = rect.y as f32;
let rw = f32::from(rect.width);
let rh = f32::from(rect.height);
for (i, pt) in self.data.iter().enumerate() {
let x = rx + rw * self.domain.x_norm(pt.x());
let y = ry + rh * self.domain.y_norm(pt.y());
if i == 0 {
write!(f, "M{} {}", x, y)?;
} else {
write!(f, " {} {}", x, y)?;
}
}
writeln!(f, "' />")
}
}
impl<'a, P> Line<'a, P>
where
P: Point,
{
pub fn new(domain: &'a Domain<Numeric, Numeric>, data: &'a [P]) -> Self {
Line { domain, data }
}
}
impl<'a, P> Plot for Scatter<'a, P> where P: Point {}
impl<'a, P> SealedPlot for Scatter<'a, P>
where
P: Point,
{
fn display(
&self,
f: &mut fmt::Formatter,
num: usize,
rect: Rect,
) -> fmt::Result {
write!(f, "<path id='plot-{}' class='scatter' d='", num)?;
let rx = rect.x as f32;
let ry = rect.y as f32;
let rw = f32::from(rect.width);
let rh = f32::from(rect.height);
for (i, pt) in self.data.iter().enumerate() {
let x = rx + rw * self.domain.x_norm(pt.x());
let y = ry + rh * self.domain.y_norm(pt.y());
if i == 0 {
write!(f, "M{} {}", x, y)?;
} else {
write!(f, " {} {}", x, y)?;
}
}
writeln!(f, "' />")
}
}
impl<'a, P> Scatter<'a, P>
where
P: Point,
{
pub fn new(domain: &'a Domain<Numeric, Numeric>, data: &'a [P]) -> Self {
Scatter { domain, data }
}
}