From 8c1fc8aaa32e650eb3c6abb4e915aa7b76b17364 Mon Sep 17 00:00:00 2001
From: Dmitry <df.creative@gmail.com>
Date: Tue, 21 Mar 2017 14:52:16 -0400
Subject: [PATCH 1/2] Update gl3d camera

---
 src/plots/gl3d/camera.js | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/src/plots/gl3d/camera.js b/src/plots/gl3d/camera.js
index e97fc8b213a..93d92e5ba08 100644
--- a/src/plots/gl3d/camera.js
+++ b/src/plots/gl3d/camera.js
@@ -14,6 +14,7 @@ var now = require('right-now');
 var createView = require('3d-view');
 var mouseChange = require('mouse-change');
 var mouseWheel = require('mouse-wheel');
+var mouseOffset = require('mouse-event-offset');
 
 function createCamera(element, options) {
     element = element || document.body;
@@ -179,8 +180,24 @@ function createCamera(element, options) {
         return false;
     });
 
-    var lastX = 0, lastY = 0;
-    mouseChange(element, function(buttons, x, y, mods) {
+    var lastX = 0, lastY = 0, lastMods = {shift: false, control: false, alt: false, meta: false};
+    mouseChange(element, handleInteraction);
+
+    // enable simple touch interactions
+    element.addEventListener('touchstart', function(ev) {
+        var xy = mouseOffset(ev.changedTouches[0], element);
+        handleInteraction(0, xy[0], xy[1], lastMods);
+        handleInteraction(1, xy[0], xy[1], lastMods);
+    });
+    element.addEventListener('touchmove', function(ev) {
+        var xy = mouseOffset(ev.changedTouches[0], element);
+        handleInteraction(1, xy[0], xy[1], lastMods);
+    });
+    element.addEventListener('touchend', function() {
+        handleInteraction(0, lastX, lastY, lastMods);
+    });
+
+    function handleInteraction(buttons, x, y, mods) {
         var keyBindingMode = camera.keyBindingMode;
 
         if(keyBindingMode === false) return;
@@ -225,9 +242,10 @@ function createCamera(element, options) {
 
         lastX = x;
         lastY = y;
+        lastMods = mods;
 
         return true;
-    });
+    }
 
     mouseWheel(element, function(dx, dy) {
         if(camera.keyBindingMode === false) return;

From 75d313b263bd925f72015a65f10c6019fee69356 Mon Sep 17 00:00:00 2001
From: Dmitry <df.creative@gmail.com>
Date: Tue, 21 Mar 2017 14:58:54 -0400
Subject: [PATCH 2/2] Add dep

---
 package.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package.json b/package.json
index deac9910aba..a37fd761f20 100644
--- a/package.json
+++ b/package.json
@@ -84,6 +84,7 @@
     "gl-surface3d": "^1.3.0",
     "mapbox-gl": "^0.22.0",
     "mouse-change": "^1.4.0",
+    "mouse-event-offset": "^3.0.2",
     "mouse-wheel": "^1.0.2",
     "ndarray": "^1.0.18",
     "ndarray-fill": "^1.0.2",