Function mapgen::geometry::usize_abs

pub fn usize_abs(x: usize, y: usize) -> usize

Calculate abs value between 2 usize values Example:

use mapgen::geometry::usize_abs;
 
assert_eq!(usize_abs(5, 3), 2);
assert_eq!(usize_abs(3, 5), 2);

Examples found in repository

src/map_buffer.rs (line 183)

    pub fn paint(&mut self, mode: Symmetry, brush_size: usize, x: usize, y: usize) {
        match mode {
            Symmetry::None => self.apply_paint(brush_size, x, y),
            Symmetry::Horizontal => {
                let center_x = self.width / 2;
                if x == center_x {
                    self.apply_paint(brush_size, x, y);
                } else {
                    let dist_x = usize_abs(center_x, x);
                    self.apply_paint(brush_size, center_x + dist_x, y);
                    self.apply_paint(brush_size, center_x - dist_x, y);
                }
            }
            Symmetry::Vertical => {
                let center_y = self.height / 2;
                if y == center_y {
                    self.apply_paint(brush_size, x, y);
                } else {
                    let dist_y = usize_abs(center_y, y);
                    self.apply_paint(brush_size, x, center_y + dist_y);
                    self.apply_paint(brush_size, x, center_y - dist_y);
                }
            }
            Symmetry::Both => {
                let center_x = self.width / 2;
                let center_y = self.height / 2;
                if x == center_x && y == center_y {
                    self.apply_paint(brush_size, x, y);
                } else {
                    let dist_x = usize_abs(center_x, x);
                    self.apply_paint(brush_size, center_x + dist_x, y);
                    self.apply_paint(brush_size, center_x - dist_x, y);
                    let dist_y = usize_abs(center_y, y);
                    self.apply_paint(brush_size, x, center_y + dist_y);
                    self.apply_paint(brush_size, x, center_y - dist_y);
                }
            }
        }
    }