diff -r 2e2414765a59 -r b4bd49f01837 client/annotviz/app/js/pianoroll.js
--- a/client/annotviz/app/js/pianoroll.js	Thu Jan 15 17:56:57 2015 +0100
+++ b/client/annotviz/app/js/pianoroll.js	Thu Jan 15 17:59:41 2015 +0100
@@ -10,11 +10,14 @@
 var PIXI = require('pixi');
 var randomColor = require('randomColor');
 
-function PianoRoll(parentContainer, xInit, yInit, height, linesDown, pixelsPerSecond, width, noteColors, colorsReg, lineColor, lineInterval, offsetMusic, noteHeight){
+function PianoRoll(parentContainer, xInit, yInit, height, linesDown, pixelsPerSecond, width, noteColors, colorsReg, lineColor, lineInterval, offsetMusic, noteHeight, horizontalView){
     var _this = this;
     this.container = new PIXI.DisplayObjectContainer();
     this.container.position.x = xInit;
     this.container.position.y = yInit;
+    if (!horizontalView){
+    	this.container.width = width;
+    }
     parentContainer.addChild(this.container);
 
     this.linesDown = linesDown;
@@ -29,16 +32,22 @@
     this.noteHeight = noteHeight;
 
     this.addNote = function(note, startTime, duration, velocity, canal){
-        //console.log("coucou 1", note, timeFromZero, ts, velocity, pixelsPerSecond, container, prHeight);
-        var beginX = (this.offsetMusic + startTime) * this.pixelsPerSecond / 1000;
-        var width = duration * this.pixelsPerSecond / 1000;
-        if((beginX+width) <  (Math.abs(this.container.x) - this.width)) {
-            // not visible. do nothing
-            return;
+        var begin = (this.offsetMusic + startTime) * this.pixelsPerSecond / 1000;
+        if (horizontalView){
+	        var width = duration * this.pixelsPerSecond / 1000;
+	        if((begin+width) <  (Math.abs(this.container.x) - this.width)) {
+	            // not visible. do nothing
+	            return;
+	        }
+        } else {
+        	var height = duration * this.pixelsPerSecond / 1000;
+	        if((begin+height) <  (Math.abs(this.container.y) - this.height)) {
+	            // not visible. do nothing
+	            return;
+	        }
         }
         // We draw the rectangle
         var graphics = new PIXI.Graphics();
-        //console.log("beginX = ", beginX, "canal = ", canal, "color = ", noteColor[canal], "width = ", width, "note = ", note, "velocity = ", velocity);
         var color = this.colorsReg[canal];
         if(typeof(color) === 'undefined') {
             var colorsRegSize = Object.keys(this.colorsReg).length;
@@ -50,21 +59,37 @@
             }
         }
         graphics.beginFill(color, (velocity / 128));
-        var y = (128-note) * this.height / 128; // (128-note) because y = 0 is for note = 128 and y = 128 for note = 0
-        graphics.drawRect(0, Math.floor(y - (noteHeight/2) + ((this.height / 128)/2)), width, noteHeight);
-        graphics.endFill();
-        graphics.x = beginX;
+        if (horizontalView){
+	        var y = (128-note) * this.height / 128; // (128-note) because y = 0 is for note = 128 and y = 128 for note = 0
+	        graphics.drawRect(0, Math.floor(y - (noteHeight/2) + ((this.height / 128)/2)), width, noteHeight);
+	        graphics.endFill();
+	        graphics.x = begin;
+        } else {
+        	var x = (128-note) * this.width / 128; // (128-note) because y = 0 is for note = 128 and y = 128 for note = 0
+	        graphics.drawRect(Math.floor(x - (noteHeight/2) + ((this.width / 128)/2)), 0, noteHeight, height);
+	        graphics.endFill();
+	        graphics.y = begin;
+        }
         this.container.addChild(graphics);
     };
 
     this.addLine = function(ts){
         var graphics = new PIXI.Graphics();
-        var x = -this.container.x;
+        if (horizontalView){
+        	var x = -this.container.x;
+        	var y = this.linesDown ? this.height - 20 : 0;
+        } else {
+        	var x = this.linesDown ? 0 : this.width - 20 ;
+        	var y = -this.container.y;
+        }
         graphics.beginFill(0xFFFF00);
         graphics.lineStyle(1, this.lineColor);
-        var y = this.linesDown ? this.height - 20 : 0;
         graphics.moveTo(x, y);
-        graphics.lineTo(x, y + 20);
+        if (horizontalView){
+        	graphics.lineTo(x, y + 20);
+        } else {
+        	graphics.lineTo(x + 20, y);
+        }
         graphics.endFill();
         this.container.addChild(graphics);
         // Add text
@@ -76,13 +101,22 @@
 
         var fontObj = { font: '10pt Arial', fill: '#444444' };
         var t = new PIXI.Text(timeStr, fontObj);
-        t.x = x + 2;
-        t.y = this.linesDown ? this.height - 15 : 2;
+        if (horizontalView){
+	        t.x = x + 2;
+	        t.y = this.linesDown ? this.height - 15 : 2;
+        } else {
+	        t.x = this.linesDown ? 2 : this.width - 55;
+	        t.y = y + 2;
+        }
         this.container.addChild(t);
     };
 
     this.moveTo = function(diffTime){
-        this.container.x = Math.floor(diffTime*this.pixelsPerSecond);
+    	if (horizontalView){
+    		this.container.x = Math.floor(diffTime*this.pixelsPerSecond);
+    	} else {
+    		this.container.y = Math.floor(diffTime*this.pixelsPerSecond);
+    	}
     };
 
     this.removePassedObjets = function(){
@@ -90,28 +124,37 @@
         var i = 0, childIsNowDisplayed = false, childrenToRemove = [];
         while(i<nbChilds && !childIsNowDisplayed){
             var child = _this.container.children[i++];
-            //console.log("remove ? ", child.x, child.width, ((child.x + child.width) < (Math.abs(_this.container.x) - _this.width)));
             if(typeof(child) == 'undefined') {
                 continue;
             }
-            if((child.x + child.width) < (Math.abs(_this.container.x) - _this.width)){
-                childrenToRemove.push(child);
-                //console.log("    remove !!!");
-            }
-            else {
-                childIsNowDisplayed = true;
-                //console.log("    childIsNowDisplayed");
+            if (horizontalView){
+	            if((child.x + child.width) < (Math.abs(_this.container.x) - _this.width)){
+	                childrenToRemove.push(child);
+	            }
+	            else {
+	                childIsNowDisplayed = true;
+	            }
+            } else {
+            	if((child.y + child.height) < (Math.abs(_this.container.y) - _this.height)){
+	                childrenToRemove.push(child);
+	            }
+	            else {
+	                childIsNowDisplayed = true;
+	            }
             }
         }
         childrenToRemove.forEach(function(child) {
             _this.container.removeChild(child);
         });
-        //console.log("before : ", nbChilds, ", after : ", _this.container.children.length);
     };
 
     // remove notes each scene width
     //var removeInterval = window.setInterval(this.removePassedObjets, 1000 * sceneWidth / this.pixelsPerSecond );
-    window.setInterval(this.removePassedObjets, 1000 * this.width / this.pixelsPerSecond );
+    if (horizontalView){
+    	window.setInterval(this.removePassedObjets, 1000 * this.width / this.pixelsPerSecond );
+    } else {
+    	window.setInterval(this.removePassedObjets, 1000 * this.height / this.pixelsPerSecond );
+    }
 
 }