63 lines
1.7 KiB
Rust
63 lines
1.7 KiB
Rust
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use std::path::Path;
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use graphics::*;
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use opengl_graphics::{
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GlGraphics,
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Texture,
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};
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static DIGITS_WIDTH: f64 = 20.0;
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static DIGITS_HEIGHT: f64 = 26.0;
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pub struct NumberRenderer {
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image: Texture,
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}
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impl NumberRenderer {
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pub fn new() -> NumberRenderer {
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NumberRenderer {
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image: Texture::from_path(Path::new("bin/assets/digits.png")).unwrap(),
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}
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}
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pub fn render(&self, number: u32, center_x: f64, center_y: f64, max_width: f64,
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color: [f32; 3], c: &Context, gl: &mut GlGraphics) {
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let digits = number_to_digits(number);
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let total_width = DIGITS_WIDTH * digits.len() as f64;
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let total_width = if total_width > max_width {
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max_width
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} else {
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total_width
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};
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let mut x = center_x - total_width / 2.0;
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let width = total_width / digits.len() as f64;
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let height = width / DIGITS_WIDTH * DIGITS_HEIGHT;
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let y = center_y - height / 2.0;
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for digit in digits.iter() {
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Image::new_colored([color[0], color[1], color[2], 1.0])
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.src_rect([(*digit * DIGITS_WIDTH as u32) as i32, 0, DIGITS_WIDTH as i32, DIGITS_HEIGHT as i32])
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.rect([x, y, width, height])
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.draw(&self.image,
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default_draw_state(),
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c.transform,
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gl);
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x += width;
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}
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}
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}
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fn number_to_digits(number: u32) -> Vec<u32> {
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let mut digits = Vec::<u32>::new();
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if number == 0 {
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digits.push(0);
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return digits;
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}
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let mut n = number;
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while n != 0 {
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digits.insert(0, n % 10);
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n /= 10;
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}
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digits
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}
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