make velocity a regular value prop

packages/canvas/pianoroll.mjs

@@ -0,0 +1,292 @@
+/*
+pianoroll.mjs - <short description TODO>
+Copyright (C) 2022 Strudel contributors - see <https://github.com/tidalcycles/strudel/blob/main/packages/canvas/pianoroll.mjs>
+This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+import { Pattern, noteToMidi, freqToMidi } from '@strudel/core';
+
+const scale = (normalized, min, max) => normalized * (max - min) + min;
+const getValue = (e) => {
+  let { value } = e;
+  if (typeof e.value !== 'object') {
+    value = { value };
+  }
+  let { note, n, freq, s } = value;
+  if (freq) {
+    return freqToMidi(freq);
+  }
+  note = note ?? n;
+  if (typeof note === 'string') {
+    return noteToMidi(note);
+  }
+  if (typeof note === 'number') {
+    return note;
+  }
+  if (s) {
+    return '_' + s;
+  }
+  return value;
+};
+
+Pattern.prototype.pianoroll = function (options = {}) {
+  let { cycles = 4, playhead = 0.5, overscan = 1, hideNegative = false } = options;
+
+  let from = -cycles * playhead;
+  let to = cycles * (1 - playhead);
+
+  this.draw(
+    (ctx, haps, t) => {
+      const inFrame = (event) =>
+        (!hideNegative || event.whole.begin >= 0) && event.whole.begin <= t + to && event.endClipped >= t + from;
+      pianoroll({
+        ...options,
+        time: t,
+        ctx,
+        haps: haps.filter(inFrame),
+      });
+    },
+    {
+      from: from - overscan,
+      to: to + overscan,
+    },
+  );
+  return this;
+};
+
+// this function allows drawing a pianoroll without ties to Pattern.prototype
+// it will probably replace the above in the future
+
+/**
+ * Displays a midi-style piano roll
+ *
+ * @name pianoroll
+ * @param {Object} options Object containing all the optional following parameters as key value pairs:
+ * @param {integer} cycles number of cycles to be displayed at the same time - defaults to 4
+ * @param {number} playhead location of the active notes on the time axis - 0 to 1, defaults to 0.5
+ * @param {boolean} vertical displays the roll vertically - 0 by default
+ * @param {boolean} labels displays labels on individual notes (see the label function) - 0 by default
+ * @param {boolean} flipTime reverse the direction of the roll - 0 by default
+ * @param {boolean} flipValues reverse the relative location of notes on the value axis - 0 by default
+ * @param {number} overscan lookup X cycles outside of the cycles window to display notes in advance - 1 by default
+ * @param {boolean} hideNegative hide notes with negative time (before starting playing the pattern) - 0 by default
+ * @param {boolean} smear notes leave a solid trace - 0 by default
+ * @param {boolean} fold notes takes the full value axis width - 0 by default
+ * @param {string} active hexadecimal or CSS color of the active notes - defaults to #FFCA28
+ * @param {string} inactive hexadecimal or CSS color of the inactive notes - defaults to #7491D2
+ * @param {string} background hexadecimal or CSS color of the background - defaults to transparent
+ * @param {string} playheadColor hexadecimal or CSS color of the line representing the play head - defaults to white
+ * @param {boolean} fill notes are filled with color (otherwise only the label is displayed) - 0 by default
+ * @param {boolean} fillActive active notes are filled with color - 0 by default
+ * @param {boolean} stroke notes are shown with colored borders - 0 by default
+ * @param {boolean} strokeActive active notes are shown with colored borders - 0 by default
+ * @param {boolean} hideInactive only active notes are shown - 0 by default
+ * @param {boolean} colorizeInactive use note color for inactive notes - 1 by default
+ * @param {string} fontFamily define the font used by notes labels - defaults to 'monospace'
+ * @param {integer} minMidi minimum note value to display on the value axis - defaults to 10
+ * @param {integer} maxMidi maximum note value to display on the value axis - defaults to 90
+ * @param {boolean} autorange automatically calculate the minMidi and maxMidi parameters - 0 by default
+ *
+ * @example
+ * note("C2 A2 G2").euclid(5,8).s('piano').clip(1).color('salmon').pianoroll({vertical:1, labels:1})
+ */
+export function pianoroll({
+  time,
+  haps,
+  cycles = 4,
+  playhead = 0.5,
+  flipTime = 0,
+  flipValues = 0,
+  hideNegative = false,
+  // inactive = '#C9E597',
+  // inactive = '#FFCA28',
+  inactive = '#7491D2',
+  active = '#FFCA28',
+  // background = '#2A3236',
+  background = 'transparent',
+  smear = 0,
+  playheadColor = 'white',
+  minMidi = 10,
+  maxMidi = 90,
+  autorange = 0,
+  timeframe: timeframeProp,
+  fold = 0,
+  vertical = 0,
+  labels = false,
+  fill = 1,
+  fillActive = false,
+  strokeActive = true,
+  stroke,
+  hideInactive = 0,
+  colorizeInactive = 1,
+  fontFamily,
+  ctx,
+} = {}) {
+  const w = ctx.canvas.width;
+  const h = ctx.canvas.height;
+  let from = -cycles * playhead;
+  let to = cycles * (1 - playhead);
+
+  if (timeframeProp) {
+    console.warn('timeframe is deprecated! use from/to instead');
+    from = 0;
+    to = timeframeProp;
+  }
+  const timeAxis = vertical ? h : w;
+  const valueAxis = vertical ? w : h;
+  let timeRange = vertical ? [timeAxis, 0] : [0, timeAxis]; // pixel range for time
+  const timeExtent = to - from; // number of seconds that fit inside the canvas frame
+  const valueRange = vertical ? [0, valueAxis] : [valueAxis, 0]; // pixel range for values
+  let valueExtent = maxMidi - minMidi + 1; // number of "slots" for values, overwritten if autorange true
+  let barThickness = valueAxis / valueExtent; // pixels per value, overwritten if autorange true
+  let foldValues = [];
+  flipTime && timeRange.reverse();
+  flipValues && valueRange.reverse();
+
+  // onQuery
+  const { min, max, values } = haps.reduce(
+    ({ min, max, values }, e) => {
+      const v = getValue(e);
+      return {
+        min: v < min ? v : min,
+        max: v > max ? v : max,
+        values: values.includes(v) ? values : [...values, v],
+      };
+    },
+    { min: Infinity, max: -Infinity, values: [] },
+  );
+  if (autorange) {
+    minMidi = min;
+    maxMidi = max;
+    valueExtent = maxMidi - minMidi + 1;
+  }
+  foldValues = values.sort((a, b) =>
+    typeof a === 'number' && typeof b === 'number'
+      ? a - b
+      : typeof a === 'number'
+        ? 1
+        : String(a).localeCompare(String(b)),
+  );
+  barThickness = fold ? valueAxis / foldValues.length : valueAxis / valueExtent;
+  ctx.fillStyle = background;
+  ctx.globalAlpha = 1; // reset!
+  if (!smear) {
+    ctx.clearRect(0, 0, w, h);
+    ctx.fillRect(0, 0, w, h);
+  }
+  haps.forEach((event) => {
+    const isActive = event.whole.begin <= time && event.endClipped > time;
+    let strokeCurrent = stroke ?? (strokeActive && isActive);
+    let fillCurrent = (!isActive && fill) || (isActive && fillActive);
+    if (hideInactive && !isActive) {
+      return;
+    }
+    let color = event.value?.color || event.context?.color;
+    active = color || active;
+    inactive = colorizeInactive ? color || inactive : inactive;
+    color = isActive ? active : inactive;
+    ctx.fillStyle = fillCurrent ? color : 'transparent';
+    ctx.strokeStyle = color;
+    ctx.globalAlpha = event.value?.velocity ?? event.value?.gain ?? 1;
+    const timeProgress = (event.whole.begin - (flipTime ? to : from)) / timeExtent;
+    const timePx = scale(timeProgress, ...timeRange);
+    let durationPx = scale(event.duration / timeExtent, 0, timeAxis);
+    const value = getValue(event);
+    const valueProgress = fold
+      ? foldValues.indexOf(value) / foldValues.length
+      : (Number(value) - minMidi) / valueExtent;
+    const valuePx = scale(valueProgress, ...valueRange);
+    let margin = 0;
+    const offset = scale(time / timeExtent, ...timeRange);
+    let coords;
+    if (vertical) {
+      coords = [
+        valuePx + 1 - (flipValues ? barThickness : 0), // x
+        timeAxis - offset + timePx + margin + 1 - (flipTime ? 0 : durationPx), // y
+        barThickness - 2, // width
+        durationPx - 2, // height
+      ];
+    } else {
+      coords = [
+        timePx - offset + margin + 1 - (flipTime ? durationPx : 0), // x
+        valuePx + 1 - (flipValues ? 0 : barThickness), // y
+        durationPx - 2, // widith
+        barThickness - 2, // height
+      ];
+    }
+    /* const xFactor = Math.sin(performance.now() / 500) + 1;
+      coords[0] *= xFactor; */
+
+    if (strokeCurrent) {
+      ctx.strokeRect(...coords);
+    }
+    if (fillCurrent) {
+      ctx.fillRect(...coords);
+    }
+    //ctx.ellipse(...ellipseFromRect(...coords))
+    if (labels) {
+      const defaultLabel = event.value.note ?? event.value.s + (event.value.n ? `:${event.value.n}` : '');
+      const { label: inactiveLabel, activeLabel } = event.value;
+      const customLabel = isActive ? activeLabel || inactiveLabel : inactiveLabel;
+      const label = customLabel ?? defaultLabel;
+      let measure = vertical ? durationPx : barThickness * 0.75;
+      ctx.font = `${measure}px ${fontFamily || 'monospace'}`;
+      // font color
+      ctx.fillStyle = /* isActive &&  */ !fillCurrent ? color : 'black';
+      ctx.textBaseline = 'top';
+      ctx.fillText(label, ...coords);
+    }
+  });
+  ctx.globalAlpha = 1; // reset!
+  const playheadPosition = scale(-from / timeExtent, ...timeRange);
+  // draw playhead
+  ctx.strokeStyle = playheadColor;
+  ctx.beginPath();
+  if (vertical) {
+    ctx.moveTo(0, playheadPosition);
+    ctx.lineTo(valueAxis, playheadPosition);
+  } else {
+    ctx.moveTo(playheadPosition, 0);
+    ctx.lineTo(playheadPosition, valueAxis);
+  }
+  ctx.stroke();
+  return this;
+}
+
+export function getDrawOptions(drawTime, options = {}) {
+  let [lookbehind, lookahead] = drawTime;
+  lookbehind = Math.abs(lookbehind);
+  const cycles = lookahead + lookbehind;
+  const playhead = lookbehind / cycles;
+  return { fold: 1, ...options, cycles, playhead };
+}
+
+export const getPunchcardPainter =
+  (options = {}) =>
+  (ctx, time, haps, drawTime, paintOptions = {}) =>
+    pianoroll({ ctx, time, haps, ...getDrawOptions(drawTime, { ...paintOptions, ...options }) });
+
+Pattern.prototype.punchcard = function (options) {
+  return this.onPaint(getPunchcardPainter(options));
+};
+
+/**
+ * Displays a vertical pianoroll with event labels.
+ * Supports all the same options as pianoroll.
+ *
+ * @name wordfall
+ */
+Pattern.prototype.wordfall = function (options) {
+  return this.punchcard({ vertical: 1, labels: 1, stroke: 0, fillActive: 1, active: 'white', ...options });
+};
+
+/* Pattern.prototype.pianoroll = function (options) {
+  return this.onPaint((ctx, time, haps, drawTime) =>
+    pianoroll({ ctx, time, haps, ...getDrawOptions(drawTime, { fold: 0, ...options }) }),
+  );
+}; */
+
+export function drawPianoroll(options) {
+  const { drawTime, ...rest } = options;
+  pianoroll({ ...getDrawOptions(drawTime), ...rest });
+}

packages/core/controls.mjs

@@ -125,6 +125,16 @@ export const { note } = registerControl(['note', 'n']);
  *
  */
 export const { accelerate } = registerControl('accelerate');
+/**
+ *
+ * Sets the velocity from 0 to 1. Is multiplied together with gain.
+ * @name velocity
+ * @example
+ * s("hh*8")
+ * .gain(".4!2 1 .4!2 1 .4 1")
+ * .velocity(".4 1")
+ */
+export const { velocity } = registerControl('velocity');
 /**
  * Controls the gain by an exponential amount.
  *
@@ -1163,11 +1173,9 @@ export const { rate } = registerControl('rate');
 export const { slide } = registerControl('slide');
 // TODO: detune? https://tidalcycles.org/docs/patternlib/tutorials/synthesizers/#supersquare
 export const { semitone } = registerControl('semitone');
-// TODO: dedup with synth param, see https://tidalcycles.org/docs/reference/synthesizers/#superpiano
+
-// ['velocity'],
 // TODO: synth param
 export const { voice } = registerControl('voice');
-
 // voicings // https://github.com/tidalcycles/strudel/issues/506
 // chord to voice, like C Eb Fm7 G7. the symbols can be defined via addVoicings
 export const { chord } = registerControl('chord');

packages/core/pattern.mjs

@@ -2063,7 +2063,7 @@ export const { echoWith, echowith, stutWith, stutwith } = register(
  * s("bd sd").echo(3, 1/6, .8)
  */
 export const echo = register('echo', function (times, time, feedback, pat) {
-  return pat._echoWith(times, time, (pat, i) => pat.velocity(Math.pow(feedback, i)));
+  return pat._echoWith(times, time, (pat, i) => pat.gain(Math.pow(feedback, i)));
 });
 
 /**
@@ -2076,7 +2076,7 @@ export const echo = register('echo', function (times, time, feedback, pat) {
  * s("bd sd").stut(3, .8, 1/6)
  */
 export const stut = register('stut', function (times, feedback, time, pat) {
-  return pat._echoWith(times, time, (pat, i) => pat.velocity(Math.pow(feedback, i)));
+  return pat._echoWith(times, time, (pat, i) => pat.gain(Math.pow(feedback, i)));
 });
 
 /**
@@ -2221,19 +2221,6 @@ export const { color, colour } = register(['color', 'colour'], function (color,
   return pat.withContext((context) => ({ ...context, color }));
 });
 
-/**
- *
- * Sets the velocity from 0 to 1. Is multiplied together with gain.
- * @name velocity
- * @example
- * s("hh*8")
- * .gain(".4!2 1 .4!2 1 .4 1")
- * .velocity(".4 1")
- */
-export const velocity = register('velocity', function (velocity, pat) {
-  return pat.withContext((context) => ({ ...context, velocity: (context.velocity || 1) * velocity }));
-});
-
 //////////////////////////////////////////////////////////////////////
 // Control-related functions, i.e. ones that manipulate patterns of
 // objects

packages/core/pianoroll.mjs

@@ -187,7 +187,8 @@ export function pianoroll({
     color = isActive ? active : inactive;
     ctx.fillStyle = fillCurrent ? color : 'transparent';
     ctx.strokeStyle = color;
-    ctx.globalAlpha = event.context.velocity ?? event.value?.gain ?? 1;
+    const { velocity = 1, gain = 1 } = event.value || {};
+    ctx.globalAlpha = velocity * gain;
     const timeProgress = (event.whole.begin - (flipTime ? to : from)) / timeExtent;
     const timePx = scale(timeProgress, ...timeRange);
     let durationPx = scale(event.duration / timeExtent, 0, timeAxis);

packages/csound/index.mjs

@@ -152,12 +152,14 @@ export const csoundm = register('csoundm', (instrument, pat) => {
     const p2 = tidal_time - getAudioContext().currentTime;
     const p3 = hap.duration.valueOf() + 0;
     const frequency = getFrequency(hap);
+    let { gain = 1, velocity = 0.9 } = hap.value;
+    velocity = gain * velocity;
     // Translate frequency to MIDI key number _without_ rounding.
     const C4 = 261.62558;
     let octave = Math.log(frequency / C4) / Math.log(2.0) + 8.0;
     const p4 = octave * 12.0 - 36.0;
     // We prefer floating point precision, but over the MIDI range [0, 127].
-    const p5 = 127 * (hap.context?.velocity ?? 0.9);
+    const p5 = 127 * velocity;
     // The Strudel controls as a string.
     const p6 = Object.entries({ ...hap.value, frequency })
       .flat()

packages/desktopbridge/midibridge.mjs

@@ -7,9 +7,9 @@ const CC_MESSAGE = 0xb0;
 
 Pattern.prototype.midi = function (output) {
   return this.onTrigger((time, hap, currentTime, cps) => {
-    const { note, nrpnn, nrpv, ccn, ccv } = hap.value;
+    let { note, nrpnn, nrpv, ccn, ccv, velocity = 0.9, gain = 1 } = hap.value;
     const offset = (time - currentTime) * 1000;
-    const velocity = Math.floor((hap.context?.velocity ?? 0.9) * 100); // TODO: refactor velocity
+    velocity = Math.floor(gain * velocity * 100);
     const duration = Math.floor((hap.duration.valueOf() / cps) * 1000 - 10);
     const roundedOffset = Math.round(offset);
     const midichan = (hap.value.midichan ?? 1) - 1;

packages/midi/midi.mjs

@@ -125,8 +125,9 @@ Pattern.prototype.midi = function (output) {
     const timeOffsetString = `+${offset}`;
 
     // destructure value
-    const { note, nrpnn, nrpv, ccn, ccv, midichan = 1, midicmd } = hap.value;
+    let { note, nrpnn, nrpv, ccn, ccv, midichan = 1, midicmd, gain = 1, velocity = 0.9 } = hap.value;
-    const velocity = hap.context?.velocity ?? 0.9; // TODO: refactor velocity
+
+    velocity = gain * velocity;
 
     // note off messages will often a few ms arrive late, try to prevent glitching by subtracting from the duration length
     const duration = Math.floor((hap.duration.valueOf() / cps) * 1000 - 10);

packages/superdough/superdough.mjs

@@ -344,7 +344,7 @@ export const superdough = async (value, deadline, hapDuration) => {
   //music programs/audio gear usually increments inputs/outputs from 1, so imitate that behavior
   channels = (Array.isArray(channels) ? channels : [channels]).map((ch) => ch - 1);
 
-  gain *= velocity; // legacy fix for velocity
+  gain *= velocity; // velocity currently only multiplies with gain. it might do other things in the future
   let toDisconnect = []; // audio nodes that will be disconnected when the source has ended
   const onended = () => {
     toDisconnect.forEach((n) => n?.disconnect());

packages/webaudio/webaudio.mjs

@@ -12,7 +12,7 @@ setLogger(logger);
 
 const hap2value = (hap) => {
   hap.ensureObjectValue();
-  return { ...hap.value, velocity: hap.context.velocity };
+  return hap.value;
 };
 
 export const webaudioOutputTrigger = (t, hap, ct, cps) => superdough(hap2value(hap), t - ct, hap.duration / cps, cps);