starblue/pixelfoo-apps
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Code Issues Releases Activity

Initialize chars.

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This commit is contained in:
Juergen Stuber 2018-12-31 21:46:55 +01:00
parent f5a2f12990
commit dcf82ab20c
1 changed files with 26 additions and 12 deletions
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38
src/bin/chars/main.rs
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@ -23,6 +23,21 @@ fn send<T: Write>(w: &mut T, f: &Frame) -> std::io::Result<()> {
w.flush() w.flush()
} }
fn paint_char(frame: &mut Frame, x: usize, y: usize, bitmap: &[u8], fg: Color, bg: Color) {
for i in 0..8 {
let b = bitmap[i];
for j in 0..8 {
frame[y * 8 + 7 - i][x * 8 + j] = {
if b & (1 << j) != 0 {
fg
} else {
bg
}
};
}
}
}
fn main() -> std::io::Result<()> { fn main() -> std::io::Result<()> {
let args = args().collect::<Vec<_>>(); let args = args().collect::<Vec<_>>();
eprintln!("executing {}", args[0]); eprintln!("executing {}", args[0]);
@ -53,6 +68,15 @@ fn main() -> std::io::Result<()> {
let mut frame = repeat(repeat(Color::black()).take(x_size).collect::<Vec<_>>()) let mut frame = repeat(repeat(Color::black()).take(x_size).collect::<Vec<_>>())
.take(y_size) .take(y_size)
.collect::<Vec<_>>(); .collect::<Vec<_>>();
for x in 0..(x_size / 8) {
for y in 0..(y_size / 8) {
let fg = colors[rng.gen_range(0, colors.len())];
let bg = colors[rng.gen_range(0, colors.len())];
let start_index = rng.gen_range(0, buffer.len() / 8) * 8;
let bitmap = &buffer[start_index..(start_index + 8)];
paint_char(&mut frame, x, y, bitmap, fg, bg);
}
}
loop { loop {
if rng.gen::<f64>() < 0.02 { if rng.gen::<f64>() < 0.02 {
let x = rng.gen_range(0, x_size / 8); let x = rng.gen_range(0, x_size / 8);
@ -60,18 +84,8 @@ fn main() -> std::io::Result<()> {
let fg = colors[rng.gen_range(0, colors.len())]; let fg = colors[rng.gen_range(0, colors.len())];
let bg = colors[rng.gen_range(0, colors.len())]; let bg = colors[rng.gen_range(0, colors.len())];
let start_index = rng.gen_range(0, buffer.len() / 8) * 8; let start_index = rng.gen_range(0, buffer.len() / 8) * 8;
for i in 0..8 { let bitmap = &buffer[start_index..(start_index + 8)];
let b = buffer[start_index + i]; paint_char(&mut frame, x, y, bitmap, fg, bg);
for j in 0..8 {
frame[y * 8 + 7 - i][x * 8 + j] = {
if b & (1 << j) != 0 {
fg
} else {
bg
}
};
}
}
} }
let mut buf = Vec::with_capacity(x_size * y_size * 3); let mut buf = Vec::with_capacity(x_size * y_size * 3);