Add a virtual keyboard to the visualiser
This commit is contained in:
@@ -7,7 +7,8 @@
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"Bash(find /Users/mattsp/.cargo/registry/src -name memory.x -path */rp*)",
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"Bash(find /Users/mattsp/.cargo/registry/src -name build.rs -path */rp-pac*)",
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"Bash(chmod +x /Users/mattsp/projects/sound/build-web.sh)",
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"Bash(/Users/mattsp/projects/sound/build-web.sh)"
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"Bash(/Users/mattsp/projects/sound/build-web.sh)",
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"Bash(wasm-pack build:*)"
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]
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}
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}
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@@ -46,6 +46,17 @@ impl AudioEngine {
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self.analyser.clone()
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}
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/// Returns the underlying AudioContext so JS can create and schedule nodes.
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pub fn audio_context(&self) -> AudioContext {
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self.ctx.clone()
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}
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/// Returns the main input GainNode. Connect synthesiser sources here so
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/// they pass through the analyser and reach the speakers.
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pub fn input_node(&self) -> GainNode {
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self.gain.clone()
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}
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pub fn set_params(&self, _json: &str) -> Result<(), JsValue> {
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// TODO: parse JSON and post to AudioWorkletNode MessagePort
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Ok(())
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252
crates/synth-visualiser/src/keyboard.rs
Normal file
252
crates/synth-visualiser/src/keyboard.rs
Normal file
@@ -0,0 +1,252 @@
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//! Virtual piano keyboard rendered on a Canvas 2D context.
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//!
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//! Renders two octaves (C3–B4, MIDI 48–71). Pointer events return the MIDI
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//! note number that was hit, or -1 for none / note-off. The JS caller is
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//! responsible for actually synthesising sound via the Web Audio API.
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use wasm_bindgen::prelude::*;
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use web_sys::{HtmlCanvasElement, CanvasRenderingContext2d};
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// ── Layout constants ──────────────────────────────────────────────────────────
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/// First MIDI note shown (C3 = 48).
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const START_NOTE: u8 = 48;
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/// Number of octaves shown.
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const NUM_OCTAVES: usize = 2;
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/// White keys per octave.
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const WHITE_PER_OCT: usize = 7;
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/// Total white keys on the keyboard.
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const TOTAL_WHITE: usize = NUM_OCTAVES * WHITE_PER_OCT;
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/// Semitone offset within an octave for each white key (C D E F G A B).
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const WHITE_SEMITONE: [u8; 7] = [0, 2, 4, 5, 7, 9, 11];
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/// Black key info: (center x in white-key units, semitone within octave).
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/// The center x is the fraction of a white key's width from the left edge of
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/// the octave. These values give standard piano proportions.
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const BLACK_KEYS: [(f64, u8); 5] = [
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(0.67, 1), // C#
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(1.67, 3), // D#
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(3.67, 6), // F#
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(4.67, 8), // G#
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(5.67, 10), // A#
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];
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/// Black key width as a fraction of white key width.
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const BK_W_RATIO: f64 = 0.60;
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/// Black key height as a fraction of the total canvas height.
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const BK_H_RATIO: f64 = 0.60;
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// ── VirtualKeyboard ───────────────────────────────────────────────────────────
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#[wasm_bindgen]
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pub struct VirtualKeyboard {
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canvas: HtmlCanvasElement,
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ctx2d: CanvasRenderingContext2d,
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/// Currently pressed note (-1 = none). Set by pointer or external call.
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active_note: i32,
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/// Note under the pointer when not pressing (for hover highlight).
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hover_note: i32,
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/// True while a pointer button is held down over this canvas.
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pressing: bool,
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}
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#[wasm_bindgen]
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impl VirtualKeyboard {
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#[wasm_bindgen(constructor)]
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pub fn new(canvas_id: &str) -> Result<VirtualKeyboard, JsValue> {
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let window = web_sys::window().ok_or("no window")?;
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let document = window.document().ok_or("no document")?;
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let canvas: HtmlCanvasElement = document
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.get_element_by_id(canvas_id)
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.ok_or_else(|| JsValue::from_str(&format!("canvas #{canvas_id} not found")))?
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.dyn_into()?;
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let ctx2d: CanvasRenderingContext2d = canvas
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.get_context("2d")?
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.ok_or("no 2d context")?
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.dyn_into()?;
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Ok(VirtualKeyboard {
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canvas, ctx2d,
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active_note: -1,
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hover_note: -1,
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pressing: false,
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})
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}
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// ── Pointer events ────────────────────────────────────────────────────────
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/// Returns the MIDI note hit, or -1.
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pub fn on_pointer_down(&mut self, x: f32, y: f32) -> i32 {
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self.pressing = true;
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self.hover_note = -1;
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let note = self.hit_note(x as f64, y as f64);
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self.active_note = note;
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note
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}
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/// While pressing: returns current note (or -1 for off-key), so the caller
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/// can glide the oscillator. While hovering: updates highlight, returns -2
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/// (caller should ignore for synthesis).
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pub fn on_pointer_move(&mut self, x: f32, y: f32) -> i32 {
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let note = self.hit_note(x as f64, y as f64);
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if self.pressing {
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self.active_note = note;
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note
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} else {
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self.hover_note = note;
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-2 // sentinel: hover-only, no synthesis change
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}
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}
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/// Always returns -1 (note off).
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pub fn on_pointer_up(&mut self, _x: f32, _y: f32) -> i32 {
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self.pressing = false;
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self.active_note = -1;
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-1
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}
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/// Called when the pointer leaves the canvas element. Returns -1 if a
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/// note was active (caller should stop synthesis).
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pub fn on_pointer_leave(&mut self) -> i32 {
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self.hover_note = -1;
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if self.pressing {
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self.pressing = false;
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self.active_note = -1;
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return -1;
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}
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-2 // was just hovering, no synthesis change
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}
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// ── Computer-keyboard / external control ──────────────────────────────────
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/// Set the active note from an external source (computer keyboard).
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/// Pass -1 to clear.
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pub fn set_active_note(&mut self, note: i32) {
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self.active_note = note;
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}
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/// Returns the currently active MIDI note, or -1.
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pub fn active_note(&self) -> i32 {
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self.active_note
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}
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// ── Rendering ─────────────────────────────────────────────────────────────
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pub fn draw(&self) {
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let cw = self.canvas.width() as f64;
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let ch = self.canvas.height() as f64;
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if cw < 1.0 || ch < 1.0 { return; }
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let ctx = &self.ctx2d;
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let key_w = cw / TOTAL_WHITE as f64;
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let bk_w = key_w * BK_W_RATIO;
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let bk_h = ch * BK_H_RATIO;
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// Background strip
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ctx.set_fill_style_str("#0d0d0d");
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ctx.fill_rect(0.0, 0.0, cw, ch);
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// ── White keys ────────────────────────────────────────────────────────
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for i in 0..TOTAL_WHITE {
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let oct = i / WHITE_PER_OCT;
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let sem = WHITE_SEMITONE[i % WHITE_PER_OCT];
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let note = (START_NOTE + oct as u8 * 12 + sem) as i32;
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let x = i as f64 * key_w;
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let color = if note == self.active_note {
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"#6ab4e8"
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} else if note == self.hover_note {
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"#e4e4e4"
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} else {
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"#d0d0d0"
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};
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ctx.set_fill_style_str(color);
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ctx.fill_rect(x + 1.0, 0.0, key_w - 2.0, ch - 1.0);
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// Subtle 3-D edge: bright top, darker side
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ctx.set_fill_style_str("rgba(255,255,255,0.4)");
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ctx.fill_rect(x + 1.0, 0.0, key_w - 2.0, 3.0);
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ctx.set_fill_style_str("rgba(0,0,0,0.15)");
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ctx.fill_rect(x + key_w - 3.0, 0.0, 2.0, ch - 1.0);
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// C-note octave label at the bottom
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if sem == 0 {
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let oct_label = format!("C{}", START_NOTE / 12 + oct as u8);
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ctx.set_font("bold 9px sans-serif");
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ctx.set_text_align("center");
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ctx.set_fill_style_str(if note == self.active_note { "#fff" } else { "#888" });
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let _ = ctx.fill_text(&oct_label, x + key_w * 0.5, ch - 4.0);
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}
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}
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// ── Black keys (drawn on top) ─────────────────────────────────────────
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for oct in 0..NUM_OCTAVES {
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let oct_x = oct as f64 * WHITE_PER_OCT as f64 * key_w;
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for &(offset, sem) in &BLACK_KEYS {
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let note = (START_NOTE + oct as u8 * 12 + sem) as i32;
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let bx = oct_x + offset * key_w - bk_w * 0.5;
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let color = if note == self.active_note {
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"#3a8fc0"
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} else if note == self.hover_note {
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"#2a2a2a"
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} else {
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"#101010"
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};
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ctx.set_fill_style_str(color);
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ctx.fill_rect(bx, 0.0, bk_w, bk_h);
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// Subtle highlight on the top edge
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ctx.set_fill_style_str("rgba(255,255,255,0.10)");
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ctx.fill_rect(bx + 1.0, 0.0, bk_w - 2.0, 4.0);
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// Bottom rounded look (darker strip)
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ctx.set_fill_style_str("rgba(0,0,0,0.5)");
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ctx.fill_rect(bx, bk_h - 6.0, bk_w, 6.0);
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}
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}
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// Thin border around the whole keyboard
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ctx.set_stroke_style_str("#333");
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ctx.set_line_width(1.0);
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ctx.stroke_rect(0.0, 0.0, cw, ch);
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}
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}
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// ── Private helpers ───────────────────────────────────────────────────────────
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impl VirtualKeyboard {
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fn key_w(&self) -> f64 { self.canvas.width() as f64 / TOTAL_WHITE as f64 }
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fn bk_w(&self) -> f64 { self.key_w() * BK_W_RATIO }
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fn bk_h(&self) -> f64 { self.canvas.height() as f64 * BK_H_RATIO }
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/// Returns the MIDI note number at canvas position (x, y), or -1.
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fn hit_note(&self, x: f64, y: f64) -> i32 {
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let cw = self.canvas.width() as f64;
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let ch = self.canvas.height() as f64;
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if x < 0.0 || x >= cw || y < 0.0 || y >= ch { return -1; }
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let key_w = self.key_w();
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let bk_w = self.bk_w();
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let bk_h = self.bk_h();
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// Black keys first (they render on top of white keys)
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for oct in 0..NUM_OCTAVES {
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let oct_x = oct as f64 * WHITE_PER_OCT as f64 * key_w;
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for &(offset, sem) in &BLACK_KEYS {
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let bx = oct_x + offset * key_w - bk_w * 0.5;
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if x >= bx && x <= bx + bk_w && y <= bk_h {
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return (START_NOTE + oct as u8 * 12 + sem) as i32;
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}
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}
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}
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// White key
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let i = (x / key_w) as usize;
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let oct = i / WHITE_PER_OCT;
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let sem = WHITE_SEMITONE[i % WHITE_PER_OCT];
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(START_NOTE + oct as u8 * 12 + sem) as i32
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}
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}
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@@ -17,12 +17,14 @@ pub mod oscilloscope;
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pub mod spectrum;
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pub mod patchbay;
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pub mod params;
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pub mod keyboard;
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pub use engine::AudioEngine;
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pub use oscilloscope::OscilloscopeView;
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pub use spectrum::SpectrumView;
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pub use patchbay::PatchBay;
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pub use params::SynthParams;
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pub use keyboard::VirtualKeyboard;
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/// Called once by bootstrap.js after the WASM module loads.
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#[wasm_bindgen(start)]
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210
www/bootstrap.js
vendored
210
www/bootstrap.js
vendored
@@ -2,8 +2,9 @@
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* bootstrap.js — ES module entry point.
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*
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* Initialises the WASM module, wires canvas elements to Rust-exported types,
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* keeps canvas drawing buffers in sync with their CSS size, and provides a
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* draggable resize handle for the patch bay panel.
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* keeps canvas drawing buffers in sync with their CSS size, provides a
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* draggable resize handle for the patch bay, and drives a monophonic
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* synthesiser from the virtual keyboard and computer keyboard.
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*/
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import init, {
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@@ -11,16 +12,14 @@ import init, {
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OscilloscopeView,
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SpectrumView,
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PatchBay,
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VirtualKeyboard,
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SynthParams,
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} from "./pkg/synth_visualiser.js";
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// ── Canvas buffer sizing ──────────────────────────────────────────────────────
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// A <canvas> has two independent sizes:
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// - CSS display size (width/height CSS properties) — how large it appears
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// - Drawing buffer (width/height HTML attributes) — actual pixel resolution
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//
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// We must keep them in sync; if the buffer is smaller than the display size the
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// browser stretches it and everything looks blurry / oversized.
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// The canvas *attribute* (width/height) sets the drawing-buffer resolution.
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// The CSS size only controls how it's displayed. We keep them in sync so the
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// Rust code always draws at 1:1 pixels.
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function fitCanvas(canvas) {
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const w = Math.round(canvas.clientWidth);
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@@ -34,11 +33,9 @@ function fitCanvas(canvas) {
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// ── Resize handle ─────────────────────────────────────────────────────────────
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function initResizeHandle() {
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const handle = document.getElementById("resize-handle");
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const panel = document.getElementById("patchbay-panel");
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let dragging = false;
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let startY = 0;
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let startH = 0;
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const handle = document.getElementById("resize-handle");
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const panel = document.getElementById("patchbay-panel");
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let dragging = false, startY = 0, startH = 0;
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handle.addEventListener("pointerdown", e => {
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dragging = true;
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@@ -47,19 +44,81 @@ function initResizeHandle() {
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handle.setPointerCapture(e.pointerId);
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handle.classList.add("active");
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});
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handle.addEventListener("pointermove", e => {
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if (!dragging) return;
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// Dragging up (negative dy) increases the panel height
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const dy = e.clientY - startY;
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const h = Math.max(80, startH - dy);
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panel.style.height = h + "px";
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panel.style.height = Math.max(80, startH - (e.clientY - startY)) + "px";
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});
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handle.addEventListener("pointerup", () => { dragging = false; handle.classList.remove("active"); });
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handle.addEventListener("pointercancel",() => { dragging = false; handle.classList.remove("active"); });
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const stopDrag = () => { dragging = false; handle.classList.remove("active"); };
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handle.addEventListener("pointerup", stopDrag);
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handle.addEventListener("pointercancel", stopDrag);
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}
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// ── Monophonic synthesiser ────────────────────────────────────────────────────
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// Uses the Web Audio API directly. All notes are routed through the engine's
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// input GainNode → AnalyserNode → speakers so the oscilloscope and spectrum
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// analyser reflect the keyboard output.
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function createSynth(audioCtx, inputNode) {
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let osc = null;
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let envGain = null;
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let noteCache = -1;
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function midiToHz(n) {
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return 440 * Math.pow(2, (n - 69) / 12);
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}
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async function ensureRunning() {
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if (audioCtx.state !== "running") await audioCtx.resume();
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}
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return {
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async noteOn(midiNote) {
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await ensureRunning();
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if (midiNote === noteCache) return;
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const now = audioCtx.currentTime;
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if (!osc) {
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// Fresh attack
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osc = audioCtx.createOscillator();
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envGain = audioCtx.createGain();
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osc.type = "sawtooth";
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osc.frequency.value = midiToHz(midiNote);
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envGain.gain.setValueAtTime(0.0001, now);
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envGain.gain.exponentialRampToValueAtTime(0.3, now + 0.015);
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osc.connect(envGain);
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envGain.connect(inputNode);
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osc.start();
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} else {
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// Glide to new pitch without retriggering the envelope
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osc.frequency.setTargetAtTime(midiToHz(midiNote), now, 0.015);
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}
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noteCache = midiNote;
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},
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noteOff() {
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if (!osc) return;
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const now = audioCtx.currentTime;
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envGain.gain.cancelScheduledValues(now);
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envGain.gain.setValueAtTime(envGain.gain.value, now);
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envGain.gain.exponentialRampToValueAtTime(0.0001, now + 0.28);
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const o = osc, g = envGain;
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setTimeout(() => { try { o.stop(); o.disconnect(); g.disconnect(); } catch (_) {} }, 400);
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osc = null; envGain = null; noteCache = -1;
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},
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||||
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activeNote() { return noteCache; },
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};
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||||
}
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||||
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||||
// ── Computer keyboard map (standard DAW layout) ───────────────────────────────
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||||
// Lower row Z–M → C3–B3, with S D G H J for sharps
|
||||
// Upper row Q–U → C4–B4, with 2 3 5 6 7 for sharps
|
||||
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||||
const KEY_NOTE = {
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z:48, s:49, x:50, d:51, c:52, v:53, g:54, b:55, h:56, n:57, j:58, m:59,
|
||||
q:60, 2:61, w:62, 3:63, e:64, r:65, 5:66, t:67, 6:68, y:69, 7:70, u:71,
|
||||
};
|
||||
|
||||
// ── Bootstrap ─────────────────────────────────────────────────────────────────
|
||||
|
||||
const loader = document.getElementById("loader");
|
||||
@@ -73,40 +132,111 @@ async function bootstrap() {
|
||||
try {
|
||||
await init();
|
||||
|
||||
const engine = new AudioEngine();
|
||||
// ── WASM objects ──────────────────────────────────────────────────────
|
||||
const engine = new AudioEngine();
|
||||
await engine.attach();
|
||||
|
||||
const analyser = engine.analyser_node();
|
||||
const analyser = engine.analyser_node();
|
||||
const oscilloscope = new OscilloscopeView("oscilloscope-canvas", analyser);
|
||||
const spectrum = new SpectrumView("spectrum-canvas", analyser);
|
||||
const patchbay = new PatchBay("patchbay-canvas");
|
||||
const keyboard = new VirtualKeyboard("keyboard-canvas");
|
||||
|
||||
// Fit all canvas buffers to their current CSS layout size before we
|
||||
// ask Rust for canvas.width() to position the default modules.
|
||||
const pbCanvas = document.getElementById("patchbay-canvas");
|
||||
const oscCanvas = document.getElementById("oscilloscope-canvas");
|
||||
const specCanvas = document.getElementById("spectrum-canvas");
|
||||
const allCanvases = [oscCanvas, specCanvas, pbCanvas];
|
||||
// ── Canvas sizing ─────────────────────────────────────────────────────
|
||||
const pbCanvas = document.getElementById("patchbay-canvas");
|
||||
const oscCanvas = document.getElementById("oscilloscope-canvas");
|
||||
const spCanvas = document.getElementById("spectrum-canvas");
|
||||
const kbCanvas = document.getElementById("keyboard-canvas");
|
||||
const allCanvases = [oscCanvas, spCanvas, pbCanvas, kbCanvas];
|
||||
|
||||
allCanvases.forEach(fitCanvas);
|
||||
|
||||
// Seed a default patch using the now-correct canvas width.
|
||||
// Keep buffers in sync when panels are resized
|
||||
const ro = new ResizeObserver(() => allCanvases.forEach(fitCanvas));
|
||||
allCanvases.forEach(c => ro.observe(c));
|
||||
|
||||
// ── Default patch bay layout ──────────────────────────────────────────
|
||||
const cw = pbCanvas.width || pbCanvas.clientWidth || 800;
|
||||
patchbay.add_module("vco", cw * 0.12, 80);
|
||||
patchbay.add_module("adsr", cw * 0.32, 80);
|
||||
patchbay.add_module("svf", cw * 0.55, 80);
|
||||
patchbay.add_module("vca", cw * 0.76, 80);
|
||||
|
||||
// Keep canvas buffers in sync whenever the panel is resized.
|
||||
const ro = new ResizeObserver(() => allCanvases.forEach(fitCanvas));
|
||||
allCanvases.forEach(c => ro.observe(c));
|
||||
|
||||
// Patch bay pointer events
|
||||
// ── Patch bay pointer events ──────────────────────────────────────────
|
||||
pbCanvas.addEventListener("pointerdown", e => patchbay.on_pointer_down(e.offsetX, e.offsetY));
|
||||
pbCanvas.addEventListener("pointermove", e => patchbay.on_pointer_move(e.offsetX, e.offsetY));
|
||||
pbCanvas.addEventListener("pointerup", e => patchbay.on_pointer_up(e.offsetX, e.offsetY));
|
||||
pbCanvas.addEventListener("dblclick", e => patchbay.on_double_click(e.offsetX, e.offsetY));
|
||||
|
||||
// ── Synthesiser ───────────────────────────────────────────────────────
|
||||
const audioCtx = engine.audio_context();
|
||||
const inputNode = engine.input_node();
|
||||
const synth = createSynth(audioCtx, inputNode);
|
||||
|
||||
// ── Virtual keyboard pointer events ───────────────────────────────────
|
||||
let pointerDown = false;
|
||||
|
||||
kbCanvas.addEventListener("pointerdown", e => {
|
||||
pointerDown = true;
|
||||
kbCanvas.setPointerCapture(e.pointerId);
|
||||
const note = keyboard.on_pointer_down(e.offsetX, e.offsetY);
|
||||
if (note >= 0) synth.noteOn(note);
|
||||
else synth.noteOff();
|
||||
});
|
||||
|
||||
kbCanvas.addEventListener("pointermove", e => {
|
||||
const result = keyboard.on_pointer_move(e.offsetX, e.offsetY);
|
||||
if (result === -2) return; // hover only, no synthesis change
|
||||
if (pointerDown) {
|
||||
if (result >= 0) synth.noteOn(result); // noteOn handles glide
|
||||
else synth.noteOff();
|
||||
}
|
||||
});
|
||||
|
||||
kbCanvas.addEventListener("pointerup", e => {
|
||||
pointerDown = false;
|
||||
keyboard.on_pointer_up(e.offsetX, e.offsetY);
|
||||
synth.noteOff();
|
||||
});
|
||||
|
||||
kbCanvas.addEventListener("pointerleave", () => {
|
||||
const result = keyboard.on_pointer_leave();
|
||||
if (result === -1) synth.noteOff(); // was pressing
|
||||
});
|
||||
|
||||
// ── Computer keyboard events ──────────────────────────────────────────
|
||||
const heldKeys = new Set();
|
||||
|
||||
document.addEventListener("keydown", e => {
|
||||
if (e.repeat || e.ctrlKey || e.metaKey || e.altKey) return;
|
||||
const note = KEY_NOTE[e.key.toLowerCase()];
|
||||
if (note === undefined) return;
|
||||
heldKeys.add(e.key.toLowerCase());
|
||||
keyboard.set_active_note(note);
|
||||
synth.noteOn(note);
|
||||
});
|
||||
|
||||
document.addEventListener("keyup", e => {
|
||||
const key = e.key.toLowerCase();
|
||||
heldKeys.delete(key);
|
||||
const note = KEY_NOTE[key];
|
||||
if (note === undefined) return;
|
||||
|
||||
// Only stop if no other mapped key is still held
|
||||
const anyHeld = [...heldKeys].some(k => KEY_NOTE[k] !== undefined);
|
||||
if (!anyHeld) {
|
||||
keyboard.set_active_note(-1);
|
||||
synth.noteOff();
|
||||
} else {
|
||||
// Switch to the last remaining held key
|
||||
const lastKey = [...heldKeys].filter(k => KEY_NOTE[k] !== undefined).at(-1);
|
||||
const lastNote = KEY_NOTE[lastKey];
|
||||
keyboard.set_active_note(lastNote);
|
||||
synth.noteOn(lastNote);
|
||||
}
|
||||
});
|
||||
|
||||
// ── Params + engine start ─────────────────────────────────────────────
|
||||
const params = new SynthParams();
|
||||
engine.set_params(params.to_json());
|
||||
|
||||
@@ -114,11 +244,13 @@ async function bootstrap() {
|
||||
status.textContent = "Running";
|
||||
engine.start();
|
||||
|
||||
// ── Render loop ───────────────────────────────────────────────────────
|
||||
let last = performance.now();
|
||||
function frame(now) {
|
||||
oscilloscope.draw();
|
||||
spectrum.draw();
|
||||
patchbay.draw();
|
||||
keyboard.draw();
|
||||
frameTime.textContent = `frame: ${(now - last).toFixed(1)} ms`;
|
||||
last = now;
|
||||
requestAnimationFrame(frame);
|
||||
@@ -127,6 +259,14 @@ async function bootstrap() {
|
||||
|
||||
loader.classList.add("hidden");
|
||||
|
||||
// Show keyboard hint briefly then fade it
|
||||
const hint = document.getElementById("kb-hint");
|
||||
if (hint) {
|
||||
hint.style.transition = "opacity 1s";
|
||||
setTimeout(() => { hint.style.opacity = "1"; }, 2000);
|
||||
setTimeout(() => { hint.style.opacity = "0"; }, 6000);
|
||||
}
|
||||
|
||||
} catch (err) {
|
||||
console.error("[bootstrap] Fatal:", err);
|
||||
loader.textContent = `Error: ${err.message ?? err}`;
|
||||
|
||||
@@ -88,7 +88,18 @@
|
||||
flex-shrink: 0;
|
||||
height: var(--patchbay-h);
|
||||
min-height: 80px;
|
||||
max-height: calc(100vh - 120px);
|
||||
max-height: calc(100vh - 220px);
|
||||
border-top: 1px solid var(--border);
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
overflow: hidden;
|
||||
background: var(--panel);
|
||||
}
|
||||
|
||||
/* Virtual keyboard — fixed height */
|
||||
.panel--keyboard {
|
||||
flex-shrink: 0;
|
||||
height: 100px;
|
||||
border-top: 1px solid var(--border);
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
@@ -165,6 +176,11 @@
|
||||
<div class="panel__label">Patch Bay</div>
|
||||
<canvas id="patchbay-canvas"></canvas>
|
||||
</section>
|
||||
|
||||
<section class="panel panel--keyboard">
|
||||
<div class="panel__label">Keyboard <span id="kb-hint" style="color:#333;font-size:0.6rem;">Z–M · Q–U · S D G H J · 2 3 5 6 7</span></div>
|
||||
<canvas id="keyboard-canvas"></canvas>
|
||||
</section>
|
||||
</main>
|
||||
|
||||
<footer>
|
||||
|
||||
Reference in New Issue
Block a user