add held loop recording to loop-grid (hold loop button while playing)

lib/param-looper.js

@@ -6,6 +6,7 @@ var computed = require('mutant/computed')
 
 var getEvents = require('lib/get-events')
 var ParamSource = require('lib/param-source')
+var quantizeDuration = require('lib/quantize-duration')
 
 module.exports = ParamLooper
 
@@ -114,18 +115,3 @@ function getLoop (events, startPos, endPos) {
 
   return loop
 }
-
-function getGrid (duration) {
-  if (duration < 0.7) {
-    return 0.5
-  } else if (duration < 1.7) {
-    return 1
-  } else {
-    return 2
-  }
-}
-
-function quantizeDuration (value) {
-  var grid = getGrid(value)
-  return Math.round(value / grid) * grid
-}

lib/quantize-duration.js

@@ -0,0 +1,16 @@
+module.exports = quantizeDuration
+
+function quantizeDuration (value) {
+  var grid = getGrid(value)
+  return Math.round(value / grid) * grid
+}
+
+function getGrid (duration) {
+  if (duration < 0.7) {
+    return 0.5
+  } else if (duration < 1.7) {
+    return 1
+  } else {
+    return 2
+  }
+}

lib/quantize-to-square.js

@@ -0,0 +1,17 @@
+module.exports = function quantizeToSquare (value) {
+  if (value > 16) {
+    return Math.floor(value / 16) * 16
+  } else if (value > 8) {
+    return Math.floor(value / 8) * 8
+  } else if (value > 4) {
+    return Math.floor(value / 4) * 4
+  } else if (value > 2) {
+    return Math.floor(value / 2) * 2
+  } else if (value > 1) {
+    return Math.floor(value / 1) * 1
+  } else if (value > 0.5) {
+    return Math.floor(value / 0.5) * 0.5
+  } else {
+    return value
+  }
+}