1 files changed, 146 insertions, 0 deletions
diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..5f85c0b
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,146 @@
+use image::{GrayImage, Luma};
+use rusttype::{point, Font, Point, Scale};
+use std::env;
+use std::fs::{self, File};
+use std::io::{self, Write};
+use std::path::Path;
+
+fn exec(font_path: &str, characters: Vec<char>, font_name: &str) -> io::Result<()> {
+  let font_data = fs::read(font_path)?;
+  let font = Font::try_from_vec(font_data).expect("Failed to load font");
+
+  let scale = Scale::uniform(32.0); // Set the font size
+
+  for &c in &characters {
+    let image = render_character(&font, scale, c);
+    save_bits_to_file(font_name, c, &image)?;
+  }
+
+  Ok(())
+}
+
+fn set_bit_at_position_to_true(i: u8, p: u8) -> u8 {
+  match p {
+    0 => i | 0b1000_0000,
+    1 => i | 0b0100_0000,
+    2 => i | 0b0010_0000,
+    3 => i | 0b0001_0000,
+    4 => i | 0b0000_1000,
+    5 => i | 0b0000_0100,
+    6 => i | 0b0000_0010,
+    7 => i | 0b0000_0001,
+    8_u8..=u8::MAX => todo!(),
+  }
+}
+fn get_bit_at_position(i: u8, p: u8) -> bool {
+  match p {
+    0 => (i & 0b1000_0000) == 0b1000_0000,
+    1 => (i & 0b0100_0000) == 0b0100_0000,
+    2 => (i & 0b0010_0000) == 0b0010_0000,
+    3 => (i & 0b0001_0000) == 0b0001_0000,
+    4 => (i & 0b0000_1000) == 0b0000_1000,
+    5 => (i & 0b0000_0100) == 0b0000_0100,
+    6 => (i & 0b0000_0010) == 0b0000_0010,
+    7 => (i & 0b0000_0001) == 0b0000_0001,
+    8_u8..=u8::MAX => todo!(),
+  }
+}
+
+fn render_character(font: &Font, scale: Scale, character: char) -> Vec<u8> {
+  let glyph = font.glyph(character).scaled(scale);
+  let bounding_box = glyph.exact_bounding_box().unwrap();
+  let width = bounding_box.width() as u32;
+  let height = bounding_box.height() as u32;
+
+  let mut image: Vec<u8> = Vec::new();
+
+  fn define_item(a: &mut Vec<u8>, i: usize, v: u8) {
+    if a.len() <= i {
+      while a.len() < i {
+        a.push(0x00);
+      }
+      a.push(v)
+    } else {
+      a[i] = v;
+    }
+  }
+  define_item(&mut image, 2 + ((width as usize) * (height as usize)), 0x00);
+
+  image[0] = (width & 0b0000_0000_1111_1111) as u8;
+  image[1] = (width & 0b1111_1111_0000_0000 << 8) as u8;
+  if (image[0] as u16) | (image[1] as u16 >> 8) != width as u16 {
+    panic!("Width missmatch!");
+  }
+
+  glyph
+    .positioned(Point { x: 0.0, y: 0.0 })
+    .draw(|gx: u32, gy: u32, v| {
+      let bit = (v * 255.0) as u8;
+      // image.push(bit);
+      let v = format!("{:x?}", bit);
+      let v = if v.len() == 1 { format!("0{}", v) } else { v };
+      for char in v.chars() {
+        image[(2 + gy * width + gx) as usize] = char as u8;
+      }
+    });
+  image
+}
+fn img_to_hex(image: Vec<u8>) -> Vec<u8> {
+  let mut image2: Vec<u8> = Vec::new();
+  let width = (image[0] as u16) | (image[1] as u16 >> 8);
+  for char in format!("Width: {width}\n").chars() {
+    image2.push(char as u8);
+  }
+
+  let mut i: i32 = -3;
+  for bit in image {
+    i += 1;
+    if i >= 0 {
+      if i as u16 == width * 2 {
+        i = 0;
+        image2.push('\n' as u8);
+      }
+      // let v = format!("{:x?}", bit);
+      // let v = if v.len() == 1 { format!("0{}", v) } else { v };
+      // for char in v.chars() {
+      //   image2.push(char as u8);
+      // }
+      image2.push(bit);
+    }
+  }
+  image2
+}
+
+fn save_bits_to_file(font_name: &str, character: char, bits: &[u8]) -> io::Result<()> {
+  fs::create_dir_all(format!("assets/computed-fonts/{}/", font_name))?;
+  let filename = format!(
+    "assets/computed-fonts/{}/{}.bin",
+    font_name, character as u8
+  );
+  let mut file = File::create(&filename)?;
+  file.write_all(bits)?;
+  let filename = format!(
+    "assets/computed-fonts/{}/{}.txt",
+    font_name, character as u8
+  );
+  let mut file = File::create(&filename)?;
+  file.write_all(&img_to_hex(bits.to_vec()))?;
+  Ok(())
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+  exec(
+    "assets/fonts/Galmuri11.ttf",
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz2053:"
+      .chars()
+      .collect(),
+    "Galmuri",
+  )?;
+  exec(
+    "assets/fonts/CherryBombOne.ttf",
+    "UwUSpace".chars().collect(),
+    "CherryBombOne",
+  )?;
+  File::create("/root/uwu/a/a/a")?;
+  Ok(())
+}