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author | Julian T <julian@jtle.dk> | 2021-08-05 15:44:40 +0200 |
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committer | Julian T <julian@jtle.dk> | 2021-08-05 15:44:40 +0200 |
commit | 3ef8f4d918406eec6bdc29e0ebd883fabfac9b2e (patch) | |
tree | aa4b1aac1e165821c16f222ebfb9212a9740e98b /src/core/bound2.rs | |
parent | 45119506c0293fdde6cef35f6e6f82d4055b46b6 (diff) |
Add picture for c5505ab84820248c6dba35fc06aef9e0ced183derendered
Diffstat (limited to 'src/core/bound2.rs')
-rw-r--r-- | src/core/bound2.rs | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/src/core/bound2.rs b/src/core/bound2.rs deleted file mode 100644 index bc0e7cd..0000000 --- a/src/core/bound2.rs +++ /dev/null @@ -1,127 +0,0 @@ -//! Implements a 2d axis aligned bounding box -use crate::{Number, Float}; -use super::vector2::Vector2; -use crate::core; -use crate::core::{min, max}; - -/// Implements a region between min and max -#[derive(Clone)] -pub struct Bound2<T: Number> { - pub min: Vector2<T>, - pub max: Vector2<T> -} - -pub type Bound2i = Bound2<i32>; -pub type Bound2f = Bound2<Float>; - -impl<T: Number> Bound2<T> { - /// Creates a new bound from two points - /// - /// p0 does not have to be smaller than p1 - pub fn new(p0: &Vector2<T>, p1: &Vector2<T>) -> Self { - let min = Vector2::new_xy(min(p0.x, p1.x), min(p0.y, p1.y)); - let max = Vector2::new_xy(max(p0.x, p1.x), max(p0.y, p1.y)); - - Self { min, max } - } - - pub fn new_xyxy(x1: T, y1: T, x2: T, y2: T) -> Self { - Self::new( - &Vector2::new_xy(x1, y1), - &Vector2::new_xy(x2, y2), - ) - } - - /// Finds the intersected area between two bounds - pub fn intersect(&self, b: &Bound2<T>) -> Bound2<T> { - Bound2::new( - &Vector2::new_xy(max(self.min.x, b.min.x), max(self.min.y, b.min.y)), - &Vector2::new_xy(min(self.max.x, b.max.x), min(self.max.y, b.max.y)), - ) - } - - - /// Calculates the diagonal vector - /// - /// Can be used to calculate the size of the bound - /// - /// # Examples - /// - /// ``` - /// use rendering::core::Bound2i; - /// let b = Bound2i::new_xyxy(2, 2, 6, 7); - /// let diag = b.diagonal(); - /// - /// assert!(diag.x == 4 && diag.y == 5); - /// ``` - pub fn diagonal(&self) -> Vector2<T> { - self.max - self.min - } - - /// Calculates the area of of the bounded region - /// - /// # Examples - /// - /// ``` - /// use rendering::core::Bound2i; - /// let b = Bound2i::new_xyxy(10, 10, 20, 20); - /// - /// assert!(b.area() == 100); - /// ``` - pub fn area(&self) -> T { - let diag = self.diagonal(); - diag.x * diag.y - } -} - -impl From<&Bound2i> for Bound2f { - fn from(b: &Bound2i) -> Self { - Self { - min: core::Vector2f::from(b.min), - max: core::Vector2f::from(b.max), - } - } -} - -impl From<&Bound2f> for Bound2i { - fn from(b: &Bound2f) -> Self { - Self { - min: core::Vector2i::from(b.min), - max: core::Vector2i::from(b.max), - } - } -} - -#[cfg(test)] -mod tests { - use super::*; - - fn create_test() -> Bound2<i32> { - Bound2::new( - &Vector2::new_xy(1, 2), - &Vector2::new_xy(10, 3) - ) - } - - #[test] - fn area() { - let b = create_test(); - - assert!(b.area() == 9); - } - - #[test] - fn intersect_test() { - let b1 = Bound2i::new_xyxy(10, 10, 20, 20); - let b2 = Bound2i::new_xyxy(2, 11, 22, 17); - - let b = b1.intersect(&b2); - - assert!( - b.min.x == 10 && - b.min.y == 11 && - b.max.x == 20 && - b.max.y == 17 - ) - } -} |