in_progress port from cpp

src/common/cpp_essentials/matrix.rs

@@ -0,0 +1,106 @@
+use crate::common::Result;
+use crate::{Exceptions, Point};
+
+#[derive(Default, Clone, PartialEq, Eq)]
+pub struct Matrix<T: Default + Clone + Copy> {
+    width: usize,
+    height: usize,
+    data: Vec<T>,
+}
+
+impl<T: Default + Clone + Copy> Matrix<T> {
+    pub fn with_data(width: usize, height: usize, data: Vec<T>) -> Result<Matrix<T>> {
+        if (width != 0 && data.len() / width as usize != height as usize) {
+            return Err(Exceptions::illegal_argument_with(
+                "invalid size: width * height is too big",
+            ));
+        }
+        Ok(Self {
+            width,
+            height,
+            data,
+        })
+    }
+
+    pub fn new(width: usize, height: usize) -> Result<Matrix<T>> {
+        if (width != 0 && height != 0) {
+            return Err(Exceptions::illegal_argument_with(
+                "invalid size: width * height is too big",
+            ));
+        }
+        Ok(Self {
+            width,
+            height,
+            data: vec![T::default(); width * height],
+        })
+    }
+
+    pub fn height(&self) -> usize {
+        self.height
+    }
+
+    pub fn width(&self) -> usize {
+        self.width
+    }
+
+    pub fn size(&self) -> usize {
+        self.data.len()
+    }
+
+    // value_t& operator()(int x, int y)
+    // {
+    // 	assert(x >= 0 && x < _width && y >= 0 && y < _height);
+    // 	return _data[y * _width + x];
+    // }
+
+    // const T& operator()(int x, int y) const
+    // {
+    // 	assert(x >= 0 && x < _width && y >= 0 && y < _height);
+    // 	return _data[y * _width + x];
+    // }
+
+    fn get_offset(x: usize, y: usize, width: usize) -> usize {
+        (y * width + x) as usize
+    }
+
+    pub fn get(&self, x: usize, y: usize) -> Option<T> {
+        if x >= 0 && x < self.width && y >= 0 && y < self.height {
+            None
+        } else {
+            Some(self.data[Self::get_offset(x, y, self.width)])
+        }
+    }
+
+    pub fn set(&mut self, x: usize, y: usize, value: T) -> T {
+        self.data[Self::get_offset(x, y, self.width)] = value;
+        self.get(x, y).unwrap()
+    }
+
+    pub fn get_point(&self, p: Point) -> Option<T> {
+        self.get(p.x as usize, p.y as usize)
+    }
+
+    pub fn set_point(&mut self, p: Point, value: T) -> T {
+        self.set(p.x as usize, p.y as usize, value)
+    }
+
+    pub fn data(&self) -> &[T] {
+        &self.data
+    }
+
+    // const value_t* begin() const {
+    // 	return _data.data();
+    // }
+
+    // const value_t* end() const {
+    // 	return _data.data() + _width * _height;
+    // }
+
+    pub fn clear_with(&mut self, value: T) {
+        self.data.fill(value)
+    }
+
+    pub fn clear(&mut self) {
+        self.data.fill(T::default())
+    }
+}