added .color

repl/src/CodeMirror.tsx

@@ -30,14 +30,16 @@ export const markEvent = (editor) => (time, event) => {
   if (!locs || !editor) {
     return;
   }
+  const col = event.context?.color || '#FFCA28';
   // mark active event
   const marks = locs.map(({ start, end }) =>
     editor.getDoc().markText(
       { line: start.line - 1, ch: start.column },
       { line: end.line - 1, ch: end.column },
       //{ css: 'background-color: #FFCA28; color: black' } // background-color is now used by parent marking
-      { css: 'outline: 1px solid #FFCA28; box-sizing:border-box' }
-    )
+      { css: 'outline: 1px solid ' + col + '; box-sizing:border-box' },
+      //{ css: `background-color: ${col};border-radius:5px` },
+    ),
   );
   //Tone.Transport.schedule(() => { // problem: this can be cleared by scheduler...
   setTimeout(() => {
@@ -94,7 +96,7 @@ export function getCurrentParenArea(code, caretPosition) {
     } else if (code[i - 1] === ')') {
       open++;
     }
-    if(open === -1) {
+    if (open === -1) {
       break;
     }
     i--;
@@ -109,7 +111,7 @@ export function getCurrentParenArea(code, caretPosition) {
     } else if (code[i] === ')') {
       open++;
     }
-    if(open === 1) {
+    if (open === 1) {
       break;
     }
     i++;

repl/src/pianoroll.mjs

@@ -19,18 +19,20 @@ Pattern.prototype.pianoroll = function ({
       ctx.fillRect(0, 0, w, h);
       events.forEach((event) => {
         const isActive = event.whole.begin <= t && event.whole.end >= t;
-        ctx.fillStyle = isActive ? active : inactive;
+        ctx.fillStyle = event.context?.color || inactive;
+        ctx.strokeStyle = event.context?.color || active;
         ctx.globalAlpha = event.context.velocity ?? 1;
         const x = Math.round((event.whole.begin / timeframe) * w);
         const width = Math.round(((event.whole.end - event.whole.begin) / timeframe) * w);
         const y = Math.round(h - ((Number(event.value) - minMidi) / midiRange) * h);
         const offset = (t / timeframe) * w;
         const margin = 0;
-        ctx.fillRect(x - offset + margin + 1, y + 1, width - 2, height - 2);
+        const coords = [x - offset + margin + 1, y + 1, width - 2, height - 2];
+        isActive ? ctx.strokeRect(...coords) : ctx.fillRect(...coords);
       });
     },
     timeframe,
-    2 // lookaheadCycles
+    2, // lookaheadCycles
   );
   return this;
 };

strudel.mjs

@@ -636,6 +636,10 @@ class Pattern {
         return binary_pat.fmap(b => val => b ? val : undefined).appRight(this)._removeUndefineds()        
     }
 
+    _color(color) {
+      return this._withContext((context) => ({ ...context, color }));
+    }
+
     _segment(rate) {
       return this.struct(pure(true).fast(rate));
     }
@@ -728,6 +732,15 @@ class Pattern {
       return this.stutWith(times, time, (pat, i) => pat.velocity(Math.pow(feedback, i)));
     }
 
+    // these might change with: https://github.com/tidalcycles/Tidal/issues/902
+    echoWith(times, time, func) {
+      return stack(...range(0, times - 1).map((i) => func(this.late(i * time), i)));
+    }
+
+    echo(times, time, feedback) {
+      return this.echoWith(times, time, (pat, i) => pat.velocity(Math.pow(feedback, i)));
+    }
+
     iter(times) {
       return slowcat(...range(0, times - 1).map((i) => this.early(i/times)));
     }
@@ -764,7 +777,7 @@ class Pattern {
 }
 
 // methods of Pattern that get callable factories
-Pattern.prototype.patternified = ['apply', 'fast', 'slow', 'cpm', 'early', 'late', 'duration', 'legato', 'velocity', 'segment'];
+Pattern.prototype.patternified = ['apply', 'fast', 'slow', 'cpm', 'early', 'late', 'duration', 'legato', 'velocity', 'segment', 'color'];
 // methods that create patterns, which are added to patternified Pattern methods
 Pattern.prototype.factories = { pure, stack, slowcat, fastcat, cat, timeCat, sequence, polymeter, pm, polyrhythm, pr};
 // the magic happens in Pattern constructor. Keeping this in prototype enables adding methods from the outside (e.g. see tonal.ts)