basic random value noise functions

Reviewed-on: #2

example.maxpat

@@ -10,7 +10,7 @@
 		}
 ,
 		"classnamespace" : "box",
-		"rect" : [ 34.0, 76.0, 981.0, 763.0 ],
+		"rect" : [ 34.0, 76.0, 1155.0, 763.0 ],
 		"bglocked" : 0,
 		"openinpresentation" : 0,
 		"default_fontsize" : 12.0,
@@ -39,6 +39,44 @@
 		"subpatcher_template" : "",
 		"assistshowspatchername" : 0,
 		"boxes" : [ 			{
+				"box" : 				{
+					"fontname" : "Arial",
+					"fontsize" : 13.0,
+					"id" : "obj-29",
+					"maxclass" : "newobj",
+					"numinlets" : 2,
+					"numoutlets" : 1,
+					"outlettype" : [ "bang" ],
+					"patching_rect" : [ 465.0, 141.0, 210.0, 23.0 ],
+					"text" : "metro @interval 40 ticks @active 1"
+				}
+
+			}
+, 			{
+				"box" : 				{
+					"id" : "obj-28",
+					"maxclass" : "button",
+					"numinlets" : 1,
+					"numoutlets" : 1,
+					"outlettype" : [ "bang" ],
+					"parameter_enable" : 0,
+					"patching_rect" : [ 826.0, 79.0, 24.0, 24.0 ]
+				}
+
+			}
+, 			{
+				"box" : 				{
+					"id" : "obj-3",
+					"maxclass" : "newobj",
+					"numinlets" : 1,
+					"numoutlets" : 1,
+					"outlettype" : [ "" ],
+					"patching_rect" : [ 817.0, 147.0, 80.0, 22.0 ],
+					"text" : "prepend ticks"
+				}
+
+			}
+, 			{
 				"box" : 				{
 					"id" : "obj-54",
 					"maxclass" : "newobj",
@@ -130,7 +168,7 @@
 					"numoutlets" : 1,
 					"outlettype" : [ "" ],
 					"patching_rect" : [ 586.0, 713.0, 89.0, 36.0 ],
-					"text" : "harmoniclarity 40.156651"
+					"text" : "harmoniclarity 14.213599"
 				}
 
 			}
@@ -143,7 +181,7 @@
 					"numoutlets" : 1,
 					"outlettype" : [ "" ],
 					"patching_rect" : [ 491.0, 713.0, 85.0, 36.0 ],
-					"text" : "event_length 29.843349"
+					"text" : "event_length 55.786401"
 				}
 
 			}
@@ -156,7 +194,7 @@
 					"numoutlets" : 1,
 					"outlettype" : [ "" ],
 					"patching_rect" : [ 385.0, 715.0, 84.0, 36.0 ],
-					"text" : "metriclarity 22.176645"
+					"text" : "metriclarity 79.192955"
 				}
 
 			}
@@ -244,18 +282,6 @@
 					"text" : "prepend timesig"
 				}
 
-			}
-, 			{
-				"box" : 				{
-					"id" : "obj-52",
-					"maxclass" : "newobj",
-					"numinlets" : 1,
-					"numoutlets" : 1,
-					"outlettype" : [ "" ],
-					"patching_rect" : [ 545.0, 135.0, 89.0, 22.0 ],
-					"text" : "prepend tempo"
-				}
-
 			}
 , 			{
 				"box" : 				{
@@ -299,8 +325,7 @@
 					"numinlets" : 1,
 					"numoutlets" : 5,
 					"outlettype" : [ "preset", "int", "preset", "int", "" ],
-					"patching_rect" : [ 934.0, 27.0, 100.0, 40.0 ],
-					"pattrstorage" : "storage"
+					"patching_rect" : [ 934.0, 27.0, 100.0, 40.0 ]
 				}
 
 			}
@@ -784,6 +809,27 @@
 					"source" : [ "obj-27", 1 ]
 				}
 
+			}
+, 			{
+				"patchline" : 				{
+					"destination" : [ "obj-47", 0 ],
+					"source" : [ "obj-28", 0 ]
+				}
+
+			}
+, 			{
+				"patchline" : 				{
+					"destination" : [ "obj-47", 0 ],
+					"source" : [ "obj-29", 0 ]
+				}
+
+			}
+, 			{
+				"patchline" : 				{
+					"destination" : [ "obj-2", 0 ],
+					"source" : [ "obj-3", 0 ]
+				}
+
 			}
 , 			{
 				"patchline" : 				{
@@ -886,8 +932,8 @@
 			}
 , 			{
 				"patchline" : 				{
-					"destination" : [ "obj-52", 0 ],
-					"source" : [ "obj-47", 4 ]
+					"destination" : [ "obj-3", 0 ],
+					"source" : [ "obj-47", 7 ]
 				}
 
 			}
@@ -904,13 +950,6 @@
 					"source" : [ "obj-5", 0 ]
 				}
 
-			}
-, 			{
-				"patchline" : 				{
-					"destination" : [ "obj-2", 0 ],
-					"source" : [ "obj-52", 0 ]
-				}
-
 			}
 , 			{
 				"patchline" : 				{

lfogui.js

@@ -48,13 +48,15 @@ function MasterLfoHandler(){
     const [userDefinedWave, setUserDefinedWave] = React.useState(Array(50).fill(0));
 
     const [modVisibleArr, setModVisibleArr] = React.useState(initVisArr);
+    const [modTypeArr, setModTypeArr] = React.useState(Array(MAXLFOS).fill('LFO'));
     const [modInstanceNumArr, setModInstanceNumArr] = React.useState(Array(MAXLFOS).fill('1'));
 
     const [modCenterVals, setModCenterVals] = React.useState({'1':{}, '2':{}, '3':{}, '4':{}});
 
-    const [bpm, setBpm] = React.useState(100);
+    const [ticks, setTicks] = React.useState(0);
     const [beatsInMeasure, setBeatsInMeasure] = React.useState(4);
 
+    const [noiseTypeArr, setNoiseTypeArr] = React.useState(Array(MAXLFOS).fill('Sine Int.'));
     const [shapeArr, setShapeArr] = React.useState(Array(MAXLFOS).fill('Sine'));
     const [djParamArr, setDjParamArr] = React.useState(Array(MAXLFOS).fill('NONE')); 
 
@@ -64,11 +66,15 @@ function MasterLfoHandler(){
     const [minArr, setMinArr] = React.useState(Array(MAXLFOS).fill('0'));
     const [maxArr, setMaxArr] = React.useState(Array(MAXLFOS).fill('1'));
 
-    const [phaseArr, setPhaseArr] = React.useState(Array(MAXLFOS).fill('0'));
+    const [initPhaseArr, setInitPhaseArr] = React.useState(Array(MAXLFOS).fill('0'));
+    const [lastPhaseArr, setLastPhaseArr] = React.useState(Array(MAXLFOS).fill(0));
+    const [cachedNoiseValueArr, setCachedNoiseValueArr] = React.useState(Array(MAXLFOS).fill([0, 0]));
 
-    const allModArrays = [modVisibleArr, modInstanceNumArr, shapeArr, djParamArr, freqArr, minArr, maxArr, phaseArr];
-    const allModSetters = [setModVisibleArr, setModInstanceNumArr, setShapeArr, setDjParamArr, setFreqArr, setMinArr, setMaxArr, setPhaseArr];
-    const modBlankVals = [true, '1', SHAPETYPES[0], MODPARAMOPTIONS[0], '1hz', '0', '1', '0'];
+    
+
+    const allModArrays = [modVisibleArr, modTypeArr, modInstanceNumArr, shapeArr, noiseTypeArr, djParamArr, freqArr, minArr, maxArr, initPhaseArr, lastPhaseArr, cachedNoiseValueArr];
+    const allModSetters = [setModVisibleArr, setModTypeArr, setModInstanceNumArr, setShapeArr, setNoiseTypeArr, setDjParamArr, setFreqArr, setMinArr, setMaxArr, setInitPhaseArr, lastPhaseArr, cachedNoiseValueArr];
+    const modBlankVals = [true, 'LFO', '1', SHAPETYPES[0], MODPARAMOPTIONS[0], "Sine Int.", '1hz', '0', '1', '0', 0, [0, 0]];
 
 
     /// ENUMERATOR ARRAYS
@@ -112,7 +118,6 @@ function MasterLfoHandler(){
 
     React.useEffect(() => {
         function handleLoad(event) {
-            
             window.max.getDict(event.detail, (dict) => {
                 
                 for (let i = 0; i<allModArrays.length; i++) {
@@ -200,11 +205,8 @@ function MasterLfoHandler(){
 
         function handleTick(event) {
             let time = (Date.now() - firstUpdateTime) / 1000;
-            operateModulators(modVisibleArr, modInstanceNumArr, djParamArr, modCenterVals, freqArr, minArr, maxArr, shapeArr, phaseArr, userDefinedWave, time, bpm, beatsInMeasure);
-        }
-
-        function handleBpm(event) {
-            setBpm(event.detail);
+            let noiseData = {lastPhaseArr, setLastPhaseArr, cachedNoiseValueArr, setCachedNoiseValueArr, noiseTypeArr};
+            operateModulators(modVisibleArr, modTypeArr, modInstanceNumArr, djParamArr, modCenterVals, freqArr, minArr, maxArr, shapeArr, initPhaseArr, noiseData, userDefinedWave, time, beatsInMeasure, ticks);
         }
 
         function handleTimeSig(event) {
@@ -215,15 +217,19 @@ function MasterLfoHandler(){
             setUserDefinedWave(event.detail);
         }
 
+        function handleMaxTicks(event){
+            setTicks(event.detail);
+        }
+
 
         window.addEventListener('loadDict', handleLoad);
         window.addEventListener('saveDict', handleSave);
         window.addEventListener('tick', handleTick);
         window.addEventListener('param', handleParam);
         window.addEventListener('enum', handleEnum);
-        window.addEventListener('tempo', handleBpm);
         window.addEventListener('timesig', handleTimeSig);
         window.addEventListener('userWave', handleChangeUserWave);
+        window.addEventListener('maxTicks', handleMaxTicks);
 
         return () => {
             window.removeEventListener('loadDict', handleLoad);
@@ -231,11 +237,11 @@ function MasterLfoHandler(){
             window.removeEventListener('tick', handleTick);
             window.removeEventListener('param', handleParam);
             window.removeEventListener('enum', handleEnum);
-            window.removeEventListener('tempo', handleBpm);
             window.removeEventListener('timesig', handleTimeSig);
             window.removeEventListener('userWave', handleChangeUserWave);
+            window.removeEventListener('maxTicks', handleMaxTicks);
         };
-    }, [...allModArrays, ...allEnumArrays, ...allEnumMats, modCenterVals, render, bpm, beatsInMeasure]);
+    }, [...allModArrays, ...allEnumArrays, ...allEnumMats, modCenterVals, render, beatsInMeasure, ticks]);
 
 
     function CheckLinked(inst, param, checkInstArr, checkParamArr){
@@ -258,8 +264,14 @@ function MasterLfoHandler(){
             e(LfoRow, {
                 instanceNum : modInstanceNumArr[i],
                 setInstanceNum: CreateParamChanger(modInstanceNumArr, setModInstanceNumArr, i),
+
+                type: modTypeArr[i],
+                setType: CreateParamChanger(modTypeArr, setModTypeArr, i),
                 shape: shapeArr[i],
                 setShape: CreateParamChanger(shapeArr, setShapeArr, i),
+
+                noise: noiseTypeArr[i],
+                setNoise: CreateParamChanger(noiseTypeArr, setNoiseTypeArr, i),
                 djParam: djParamArr[i],
                 setDjParam: CreateParamChanger(djParamArr, setDjParamArr, i),
                 centerVals: modCenterVals,
@@ -275,13 +287,15 @@ function MasterLfoHandler(){
                 max: maxArr[i],
                 setMax: CreateParamChanger(maxArr, setMaxArr, i),
 
-                phase: phaseArr[i],
-                setPhase: CreateParamChanger(phaseArr, setPhaseArr, i),
+                phase: initPhaseArr[i],
+                setPhase: CreateParamChanger(initPhaseArr, setInitPhaseArr, i),
                 visible: modVisibleArr[i],
 
                 linked: CheckLinked(modInstanceNumArr[i], djParamArr[i], enumInstanceNumArr, enumDjParamArr),
                 addLfo: () => {
+                    
                     if (id < MAXLFOS - 1){
+                        
                         if (modVisibleArr[id + 1]){ 
                             
                             let emptyIndex = modVisibleArr.findIndex((item) => !item);
@@ -297,6 +311,7 @@ function MasterLfoHandler(){
                             }
                         }
                         else {
+                            log("adding lfo");
                             for (var j = 0; j < allModArrays.length; j++){ // no space below, easy.
                                 let array = allModArrays[j];
                                 array[id + 1] = modBlankVals[j];
@@ -432,14 +447,14 @@ if (!DEBUG){
         window.dispatchEvent(new CustomEvent('param', {'detail' : [inst, paramName, val]}));
     });
 
-    window.max.bindInlet("tempo", (val) => {
-        window.dispatchEvent(new CustomEvent('tempo', {'detail' : val}));
-    });
-
     window.max.bindInlet("timesig", (top, bottom) => {
         window.dispatchEvent(new CustomEvent('timesig', {'detail' : [top, bottom]}));
     });
 
+    window.max.bindInlet("ticks", (val) => {
+        window.dispatchEvent(new CustomEvent('maxTicks', {'detail' : val}));
+    });
+
     window.max.bindInlet("userWave", (...points) => {
         window.dispatchEvent(new CustomEvent('userWave', {'detail' : points}));
     });

modulators.js

@@ -2,7 +2,10 @@
 // MODULATORS
 /////////////////////////
 
+
+var TYPEOPTIONS = ["LFO", "Noise"];
 var SHAPETYPES = ["Sine", "SawUp", "SawDown", "Tri", "Square", "Custom"];
+var NOISETYPES = ["Rand", "Line Int.", "Sine Int."]
 
 var INSTANCEOPTIONS = ["1", "2", "3", "4"];
 
@@ -10,6 +13,11 @@ const MODPARAMOPTIONS = ["NONE", "stream", "pulse_length", "eventfulness", "even
     "harmoniclarity", "melodic_cohesion", "melody_scope", "tonic_pitch", "pitch_center", "pitch_range", "dynamics",
     "attenuation", "chordal_weight", "tonality-profile", "ostinato-buffer", "ostinato", "meter", "scale"];
 
+const PhaseTypes = Object.freeze({
+    MUSICAL:   Symbol("musical"),
+    TIME:  Symbol("time")
+    });
+
 function ControlType(){
     return e('select', {className: 'control-type'}, Option("LFO"));
 }
@@ -23,10 +31,19 @@ function LfoRow(props){
     if (!center)
         center = 0;
 
+    let typeOption = null;
+
+    if (props.type == "LFO"){
+        typeOption = ListItem(DropDown({onChange: props.setShape, value:props.shape, options: SHAPETYPES}));
+    }
+    else if (props.type == "Noise"){
+        typeOption = ListItem(DropDown({onChange: props.setNoise, value:props.noise, options: NOISETYPES}));
+    }
+
     let content = e('ul', {className: 'lfo-item'},
         ListItem(DropDown({onChange: props.setInstanceNum, value:props.instanceNum, options: INSTANCEOPTIONS})),  
-        ListItem(ControlType()), 
-        ListItem(DropDown({onChange: props.setShape, value:props.shape, options: SHAPETYPES})), 
+        ListItem(DropDown({options: TYPEOPTIONS, onChange: props.setType, value:props.type})), 
+        typeOption,
         ListItem(DropDown({onChange: props.setDjParam, value: props.djParam, options: MODPARAMOPTIONS})), 
         ListItem(e("input", {onChange:props.setFreq, value:props.freq, className:"timeInput"}, null)), 
         ListItem(e(NumberBox, {onChange:props.setMin, value:props.min, step:0.1}, null)),
@@ -61,7 +78,7 @@ function indexWave(type, phase, userDefinedWave){
     }
 }
 
-function operateModulators(visibleArr, instanceNumArr, paramNames, centers, freqs, mins, maxs, waveTypes, phaseArr, userDefinedWave, currTime, bpm, beatsInMeasure){
+function operateModulators(visibleArr, typeArr, instanceNumArr, paramNames, centers, freqs, mins, maxs, waveTypes, phaseArr, noiseData, userDefinedWave, currTime, beatsInMeasure, ticks){
     for (let i=0; i<paramNames.length; i++){
         if (visibleArr[i]){
             
@@ -71,54 +88,124 @@ function operateModulators(visibleArr, instanceNumArr, paramNames, centers, freq
             if (centers[inst].hasOwnProperty(name)){
                 center = centers[inst][name];   
             }
-            let output = operateModulator(center, inst, freqs[i], mins[i], maxs[i], waveTypes[i], phaseArr, i, userDefinedWave, name, currTime, bpm, beatsInMeasure);
+
+            let output = 0;
+            
+            if (typeArr[i] == "LFO")
+                output = operateLFO(center, inst, freqs[i], mins[i], maxs[i], waveTypes[i], phaseArr, i, userDefinedWave, name, currTime, beatsInMeasure, ticks);
+            else
+                output = operateNoise(center, inst, freqs[i], mins[i], maxs[i], waveTypes[i], phaseArr, i, name, noiseData, currTime, beatsInMeasure, ticks);
             if (name !== "NONE")
                 window.dispatchEvent(new CustomEvent('enum', {'detail' : [inst, name, output]}));
         }
     }
 }
 
-function operateModulator(center, inst, freq, min, max, waveType, phaseArr, phaseI, userDefinedWave, name, currTime, bpm, beatsInMeasure){
+function operateLFO(center, inst, timeBaseStr, min, max, waveType, phaseArr, phaseIndex, userDefinedWave, name, currTime, beatsInMeasure, maxTicks){
     let amp = parseFloat(max) - parseFloat(min);
+    let phaseType;
+    let timeBase;
     
-    freq = parseLfoTime(freq, bpm, beatsInMeasure);
-    let phase = (currTime * freq + parseFloat(phaseArr[phaseI])) % 1.00;
+    [timeBase, phaseType] = parseLfoTime(timeBaseStr, beatsInMeasure);
+    let phase;
+    
+    if (phaseType === PhaseTypes.TIME)
+        phase = (currTime * timeBase + parseFloat(phaseArr[phaseIndex])) % 1.00;
+    else if (phaseType === PhaseTypes.MUSICAL)
+        phase = (maxTicks % timeBase) / timeBase;
     let unscaled = indexWave(waveType, phase, userDefinedWave);
-    let el = document.getElementById(`slider-${inst}-${name}`);
-    
-    if (el)
-        el.value = unscaled;
+    syncDisplay(inst, name, unscaled);
     
     return  unscaled * amp + center + parseFloat(min);
 }
 
+function syncDisplay(inst, name, val) {
+    let el = document.getElementById(`slider-${inst}-${name}`);
+    
+    if (el)
+        el.value = val;
+}
 
-function parseLfoTime(lfoTime, bpm, beatsInMeasure){
+// For now, we're only using sine interpolation
+function operateNoise(center, inst, timeBaseStr, min, max, waveType, phaseArr, index, name, noiseData, currTime, beatsInMeasure, maxTicks){
+    
+    let amp = parseFloat(max) - parseFloat(min);
+    let phaseType;
+    let timeBase;
+    let noiseType = noiseData.noiseTypeArr[index];
+    
+    [timeBase, phaseType] = parseLfoTime(timeBaseStr, beatsInMeasure);
+    let phase;
+
+    if (phaseType === PhaseTypes.TIME)
+        phase = (currTime * timeBase + parseFloat(phaseArr[index])) % 1.00;
+    else if (phaseType === PhaseTypes.MUSICAL)
+        phase = (maxTicks % timeBase) / timeBase;
+
+    
+    if (noiseData.cachedNoiseValueArr[index][0] == 0 || noiseData.lastPhaseArr[index] > phase){ // occurs if the phase reset to 0 or at the very start
+
+        noiseData.cachedNoiseValueArr[index][0] = noiseData.cachedNoiseValueArr[index][1];
+        if (noiseData.cachedNoiseValueArr[index][0] == 0)
+            noiseData.cachedNoiseValueArr[index][0] = center;
+
+        noiseData.cachedNoiseValueArr[index][1] = Math.random();
+        noiseData.setCachedNoiseValueArr(noiseData.cachedNoiseValueArr);
+    }
+    noiseData.lastPhaseArr[index] = phase;
+    noiseData.setLastPhaseArr(noiseData.lastPhaseArr);
+
+    let sinePhase = (Math.sin(Math.PI + Math.PI * phase) + 1) / 2
+
+    //let unscaled = (noiseData.cachedNoiseValueArr[index][1] - noiseData.cachedNoiseValueArr[index][0]) * sinePhase + noiseData.cachedNoiseValueArr[index][0];
+    let unscaled = interpolateNoise(noiseData.noiseTypeArr[index], noiseData.cachedNoiseValueArr[index][0], noiseData.cachedNoiseValueArr[index][1], phase);
+    syncDisplay(inst, name, unscaled);
+    
+    return  unscaled * amp + center + parseFloat(min);
+
+}
+
+function interpolateNoise(type, cachedVal1, cachedVal2, phase){
+    let interpVal;
+
+    switch (type){
+        case "Sine Int.":
+            interpVal = (Math.sin(Math.PI + Math.PI * phase) + 1) / 2;
+            break;
+        case "Rand":
+            interpVal = 0;
+            break;
+        case "Line Int.":
+            interpVal = phase;
+            break;
+    }
+    return (cachedVal2 - cachedVal1) * interpVal + cachedVal1;
+}
+
+// actual returns the period for musical timing, to avoid floating point errors
+function parseLfoTime(lfoTime, beatsInMeasure){
     if (lfoTime.slice(-2) == "hz"){
-        return parseFloat(lfoTime.slice(0, -2));
+        return [parseFloat(lfoTime.slice(0, -2)), PhaseTypes.TIME];
     }
     else if (lfoTime.slice(-2) == "ms"){
-        return 1000 / parseFloat(lfoTime.slice(0, -2));
+        return [1000 / parseFloat(lfoTime.slice(0, -2)), PhaseTypes.TIME];
     }
     else if (lfoTime.slice(-1) == "s"){
-        return 1 / parseFloat(lfoTime.slice(0, -1));
+        return [1 / parseFloat(lfoTime.slice(0, -1)), PhaseTypes.TIME];
     }
     else if ((lfoTime.match(/:/g) || []).length == 2){
-        return 1 / moment.duration(lfoTime).asSeconds();
+        return [1 / moment.duration(lfoTime).asSeconds(), PhaseTypes.TIME];
     }
     else if ((lfoTime.match(/\./g) || []).length == 2){
-        return musicalTimingToFreq(...lfoTime.split('.'), bpm, beatsInMeasure)
+        return [musicalTimingToFreq(...lfoTime.split('.'), beatsInMeasure), PhaseTypes.MUSICAL];
     }
     else {
-        return 0;
+        return [0, PhaseTypes.TIME];
     }
 }
 
-function musicalTimingToFreq(bars, beats, ticks, bpm, beatsInMeasure){
-    let totalTicks = (parseFloat(bars) * parseFloat(beatsInMeasure) + beats) * 480 + parseFloat(ticks);
-    let tpm = bpm * 480;
-    let cyclesPerMinute = tpm / totalTicks;
-    let hz = cyclesPerMinute / 60;
-    return hz;
+function musicalTimingToFreq(bars, beats, ticks, beatsInMeasure){
+    let totalTicks = (parseFloat(bars) * parseFloat(beatsInMeasure) + parseFloat(beats)) * 480 + parseFloat(ticks);
+    return totalTicks;
 }