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use crate::attributes::point::Point;
use crate::dot::DotString;
use std::borrow::Cow;
/// The number of points in the list must be equivalent to 1 mod 3; note that this is not checked.
/// TODO: should we check?
pub struct SplineType {
pub start: Option<Point>,
pub end: Option<Point>,
pub spline_points: Vec<Point>,
}
impl<'a> DotString<'a> for SplineType {
fn dot_string(&self) -> Cow<'a, str> {
let mut dot_string = String::from("");
if let Some(end) = &self.end {
dot_string.push_str(format!("e,{:.1},{:.1} ", end.x, end.y).as_str());
}
if let Some(start) = &self.start {
dot_string.push_str(format!("s,{:.1},{:.1} ", start.x, start.y).as_str());
}
let mut iter = self.spline_points.iter();
let first = iter.next().unwrap();
dot_string.push_str(format!("{}", first.dot_string()).as_str());
for point in iter {
dot_string.push_str(" ");
dot_string.push_str(format!("{}", point.dot_string()).as_str());
}
dot_string.into()
}
}
#[cfg(test)]
mod test {
use crate::attributes::{Point, SplineType};
use crate::DotString;
#[test]
fn spline_type() {
let spline_type = SplineType {
end: None,
start: None,
spline_points: vec![
Point::new_2d(0.0, 0.0),
Point::new_2d(1.0, 1.0),
Point::new_2d(1.0, -1.0),
],
};
assert_eq!("0.0,0.0 1.0,1.0 1.0,-1.0", spline_type.dot_string());
}
#[test]
fn spline_type_end() {
let spline_type = SplineType {
end: Some(Point::new_2d(2.0, 0.0)),
start: None,
spline_points: vec![
Point::new_2d(0.0, 0.0),
Point::new_2d(1.0, 1.0),
Point::new_2d(1.0, -1.0),
],
};
assert_eq!(
"e,2.0,0.0 0.0,0.0 1.0,1.0 1.0,-1.0",
spline_type.dot_string()
);
}
#[test]
fn spline_type_start() {
let spline_type = SplineType {
end: None,
start: Some(Point::new_2d(-1.0, 0.0)),
spline_points: vec![
Point::new_2d(0.0, 0.0),
Point::new_2d(1.0, 1.0),
Point::new_2d(1.0, -1.0),
],
};
assert_eq!(
"s,-1.0,0.0 0.0,0.0 1.0,1.0 1.0,-1.0",
spline_type.dot_string()
);
}
#[test]
fn spline_type_complete() {
let spline_type = SplineType {
end: Some(Point::new_2d(2.0, 0.0)),
start: Some(Point::new_2d(-1.0, 0.0)),
spline_points: vec![
Point::new_2d(0.0, 0.0),
Point::new_2d(1.0, 1.0),
Point::new_2d(1.0, -1.0),
],
};
assert_eq!(
"e,2.0,0.0 s,-1.0,0.0 0.0,0.0 1.0,1.0 1.0,-1.0",
spline_type.dot_string()
);
}
}
|
