rast/graphics/
scissor.rs

1use super::image::CoordinateIterator;
2
3#[derive(Debug, Clone)]
4pub struct Scissor {
5    pub x: usize,
6    pub y: usize,
7
8    pub width: usize,
9    pub height: usize,
10}
11
12impl Scissor {
13    pub fn coordinates(&self) -> CoordinateIterator {
14        CoordinateIterator::new(self.x, self.y, self.width, self.height)
15    }
16
17    pub fn contains(&self, x: usize, y: usize) -> bool {
18        let x1 = self.x + self.width;
19        let y1 = self.y + self.height;
20
21        x >= self.x && x < x1 && y >= self.y && y < y1
22    }
23
24    pub fn intersect_with(&self, other: &Scissor) -> Option<Scissor> {
25        let x0 = self.x.max(other.x);
26        let y0 = self.y.max(other.y);
27
28        let x1 = (self.x + self.width).min(other.x + other.width);
29        let y1 = (self.y + self.height).min(other.y + other.height);
30
31        if x1 <= x0 || y1 <= y0 {
32            None
33        } else {
34            Some(Scissor {
35                x: x0,
36                y: y0,
37
38                width: x1 - x0,
39                height: y1 - y0,
40            })
41        }
42    }
43}
rast/graphics/scissor.rs

rast/graphics/
scissor.rs
