Try to optimize

This commit is contained in:
2026-01-29 11:53:47 +01:00
parent 4d0d837e14
commit 845c1134fe
14 changed files with 764 additions and 214 deletions

View File

@@ -2,6 +2,11 @@ use ratatui::buffer::Buffer;
use ratatui::layout::Rect;
use ratatui::style::Color;
use ratatui::widgets::Widget;
use std::cell::RefCell;
thread_local! {
static PATTERNS: RefCell<Vec<u8>> = const { RefCell::new(Vec::new()) };
}
#[allow(dead_code)]
pub enum Orientation {
@@ -58,46 +63,51 @@ fn render_horizontal(data: &[f32], area: Rect, buf: &mut Buffer, color: Color, g
let fine_width = width * 2;
let fine_height = height * 4;
let mut patterns = vec![0u8; width * height];
PATTERNS.with(|p| {
let mut patterns = p.borrow_mut();
let size = width * height;
patterns.clear();
patterns.resize(size, 0);
for fine_x in 0..fine_width {
let sample_idx = (fine_x * data.len()) / fine_width;
let sample = (data.get(sample_idx).copied().unwrap_or(0.0) * gain).clamp(-1.0, 1.0);
for fine_x in 0..fine_width {
let sample_idx = (fine_x * data.len()) / fine_width;
let sample = (data.get(sample_idx).copied().unwrap_or(0.0) * gain).clamp(-1.0, 1.0);
let fine_y = ((1.0 - sample) * 0.5 * (fine_height - 1) as f32).round() as usize;
let fine_y = fine_y.min(fine_height - 1);
let fine_y = ((1.0 - sample) * 0.5 * (fine_height - 1) as f32).round() as usize;
let fine_y = fine_y.min(fine_height - 1);
let char_x = fine_x / 2;
let char_y = fine_y / 4;
let dot_x = fine_x % 2;
let dot_y = fine_y % 4;
let char_x = fine_x / 2;
let char_y = fine_y / 4;
let dot_x = fine_x % 2;
let dot_y = fine_y % 4;
let bit = match (dot_x, dot_y) {
(0, 0) => 0x01,
(0, 1) => 0x02,
(0, 2) => 0x04,
(0, 3) => 0x40,
(1, 0) => 0x08,
(1, 1) => 0x10,
(1, 2) => 0x20,
(1, 3) => 0x80,
_ => unreachable!(),
};
let bit = match (dot_x, dot_y) {
(0, 0) => 0x01,
(0, 1) => 0x02,
(0, 2) => 0x04,
(0, 3) => 0x40,
(1, 0) => 0x08,
(1, 1) => 0x10,
(1, 2) => 0x20,
(1, 3) => 0x80,
_ => unreachable!(),
};
patterns[char_y * width + char_x] |= bit;
}
patterns[char_y * width + char_x] |= bit;
}
for cy in 0..height {
for cx in 0..width {
let pattern = patterns[cy * width + cx];
if pattern != 0 {
let ch = char::from_u32(0x2800 + pattern as u32).unwrap_or(' ');
buf[(area.x + cx as u16, area.y + cy as u16)]
.set_char(ch)
.set_fg(color);
for cy in 0..height {
for cx in 0..width {
let pattern = patterns[cy * width + cx];
if pattern != 0 {
let ch = char::from_u32(0x2800 + pattern as u32).unwrap_or(' ');
buf[(area.x + cx as u16, area.y + cy as u16)]
.set_char(ch)
.set_fg(color);
}
}
}
}
});
}
fn render_vertical(data: &[f32], area: Rect, buf: &mut Buffer, color: Color, gain: f32) {
@@ -106,44 +116,49 @@ fn render_vertical(data: &[f32], area: Rect, buf: &mut Buffer, color: Color, gai
let fine_width = width * 2;
let fine_height = height * 4;
let mut patterns = vec![0u8; width * height];
PATTERNS.with(|p| {
let mut patterns = p.borrow_mut();
let size = width * height;
patterns.clear();
patterns.resize(size, 0);
for fine_y in 0..fine_height {
let sample_idx = (fine_y * data.len()) / fine_height;
let sample = (data.get(sample_idx).copied().unwrap_or(0.0) * gain).clamp(-1.0, 1.0);
for fine_y in 0..fine_height {
let sample_idx = (fine_y * data.len()) / fine_height;
let sample = (data.get(sample_idx).copied().unwrap_or(0.0) * gain).clamp(-1.0, 1.0);
let fine_x = ((sample + 1.0) * 0.5 * (fine_width - 1) as f32).round() as usize;
let fine_x = fine_x.min(fine_width - 1);
let fine_x = ((sample + 1.0) * 0.5 * (fine_width - 1) as f32).round() as usize;
let fine_x = fine_x.min(fine_width - 1);
let char_x = fine_x / 2;
let char_y = fine_y / 4;
let dot_x = fine_x % 2;
let dot_y = fine_y % 4;
let char_x = fine_x / 2;
let char_y = fine_y / 4;
let dot_x = fine_x % 2;
let dot_y = fine_y % 4;
let bit = match (dot_x, dot_y) {
(0, 0) => 0x01,
(0, 1) => 0x02,
(0, 2) => 0x04,
(0, 3) => 0x40,
(1, 0) => 0x08,
(1, 1) => 0x10,
(1, 2) => 0x20,
(1, 3) => 0x80,
_ => unreachable!(),
};
let bit = match (dot_x, dot_y) {
(0, 0) => 0x01,
(0, 1) => 0x02,
(0, 2) => 0x04,
(0, 3) => 0x40,
(1, 0) => 0x08,
(1, 1) => 0x10,
(1, 2) => 0x20,
(1, 3) => 0x80,
_ => unreachable!(),
};
patterns[char_y * width + char_x] |= bit;
}
patterns[char_y * width + char_x] |= bit;
}
for cy in 0..height {
for cx in 0..width {
let pattern = patterns[cy * width + cx];
if pattern != 0 {
let ch = char::from_u32(0x2800 + pattern as u32).unwrap_or(' ');
buf[(area.x + cx as u16, area.y + cy as u16)]
.set_char(ch)
.set_fg(color);
for cy in 0..height {
for cx in 0..width {
let pattern = patterns[cy * width + cx];
if pattern != 0 {
let ch = char::from_u32(0x2800 + pattern as u32).unwrap_or(' ');
buf[(area.x + cx as u16, area.y + cy as u16)]
.set_char(ch)
.set_fg(color);
}
}
}
}
});
}