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#[allow(dead_code)]
pub struct Image {
width: u32,
height: u32,
data: Vec<u32>,
}
impl Image {
pub fn new(width: u32, height: u32, fill: Option<Color>) -> Self {
let size = width as usize * height as usize;
let data = match fill {
None => vec![0; size],
Some(color) => vec![color.into(); size],
};
Self {
width,
height,
data,
}
}
pub fn data(&self) -> &[u32] {
&self.data
}
pub fn data_mut(&mut self) -> &mut [u32] {
&mut self.data
}
pub fn width(&self) -> u32 {
self.width
}
pub fn height(&self) -> u32 {
self.height
}
pub fn rect(&mut self, x: u32, y: u32, width: u32, height: u32, clr: Color) {
let x_start = x as usize;
let x_end = (x + width) as usize;
for idx in x_start..x_end {
for idy in y as usize..y as usize + height as usize {
let data_idx = idx + idy * self.width as usize;
self.data[data_idx] = clr.into();
}
}
}
/// Primitive, naive line drawing funciton. lerps the points together and
/// draws a rect of the specified width at that location.
pub fn line(&mut self, x1: u32, y1: u32, x2: u32, y2: u32, width: u32, clr: Color) {
let start_x = x1.min(x2) as f32;
let start_y = y1.min(y2) as f32;
let end_x = x1.max(x2) as f32;
let end_y = y1.max(y2) as f32;
tracing::trace!("start_x = {start_x} / end_x = {end_x}");
tracing::trace!("start_y = {start_y} / end_y = {end_y}");
let dx = end_x - start_x;
let dy = end_y - start_y;
let long = dx.max(dy);
for idx in 0..long as usize {
let x = start_x + dx * (idx as f32 / long);
let y = start_y + dy * (idx as f32 / long);
self.rect(x as u32, y as u32, width, width, clr);
}
}
}
#[derive(Copy, Clone, Debug)]
pub struct Color {
pub r: u8,
pub g: u8,
pub b: u8,
}
impl Color {
pub fn new(r: u8, g: u8, b: u8) -> Self {
Color { r, g, b }
}
}
impl Into<u32> for Color {
fn into(self) -> u32 {
((self.r as u32) << 16) | ((self.g as u32) << 8) | (self.b as u32)
}
}
impl Into<Color> for u32 {
fn into(self) -> Color {
let bytes = self.to_be_bytes();
Color {
r: bytes[1],
g: bytes[2],
b: bytes[3],
}
}
}
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