rust/land2d/src/lib.rs
branchtransitional_engine
changeset 15933 33798b649d9c
parent 15930 f39f0f614dbf
child 15934 022ec6b916b7
equal deleted inserted replaced
15932:230dc46487ea 15933:33798b649d9c
     1 use std::{cmp, ops::Index, ops::IndexMut};
     1 use std::{cmp, ops::Index, ops::IndexMut};
     2 
     2 use vec2d::Vec2D;
     3 use integral_geometry::{ArcPoints, EquidistantPoints, Line, Point, PotSize, Rect, Size, SizeMask};
     3 use integral_geometry::{ArcPoints, EquidistantPoints, Line, Point, PotSize, Rect, Size, SizeMask};
     4 
     4 
     5 pub struct Land2D<T> {
     5 pub struct Land2D<T> {
     6     pixels: vec2d::Vec2D<T>,
     6     pixels: vec2d::Vec2D<T>,
     7     play_box: Rect,
     7     play_box: Rect,
   293     fn index_mut(&mut self, row: usize) -> &mut [T] {
   293     fn index_mut(&mut self, row: usize) -> &mut [T] {
   294         &mut self.pixels[row]
   294         &mut self.pixels[row]
   295     }
   295     }
   296 }
   296 }
   297 
   297 
       
   298 impl<T> From<Vec2D<T>> for Land2D<T> {
       
   299     fn from(vec: Vec2D<T>) -> Self {
       
   300         let actual_size = vec.size();
       
   301         let pot_size = actual_size.next_power_of_two();
       
   302 
       
   303         assert_eq!(actual_size, pot_size.size());
       
   304 
       
   305         let top_left = Point::new(0, 0);
       
   306         let play_box = Rect::from_size(top_left, actual_size);
       
   307         Self {
       
   308             play_box,
       
   309             pixels: vec,
       
   310             mask: pot_size.to_mask(),
       
   311         }
       
   312     }
       
   313 }
       
   314 
   298 #[cfg(test)]
   315 #[cfg(test)]
   299 mod tests {
   316 mod tests {
   300     use super::*;
   317     use super::*;
   301 
   318 
   302     #[test]
   319     #[test]