fix gl3d hover on mobile and tablet devices

Author: jdpaterson

camera.js

@@ -192,21 +192,21 @@ function createCamera(element, options) {
       handleInteraction(1, xy[0], xy[1], camera._lastMods)
 
       ev.preventDefault()
-    }, hasPassive ? {passive: false} : false)
+    }, hasPassive ? {passive: true} : false)
 
     element.addEventListener('touchmove', function (ev) {
       var xy = mouseOffset(ev.changedTouches[0], element)
       handleInteraction(1, xy[0], xy[1], camera._lastMods)
 
       ev.preventDefault()
-    }, hasPassive ? {passive: false} : false)
+    }, hasPassive ? {passive: true} : false)
 
     element.addEventListener('touchend', function (ev) {
 
       handleInteraction(0, camera._lastX, camera._lastY, camera._lastMods)
 
       ev.preventDefault()
-    }, hasPassive ? {passive: false} : false)
+    }, hasPassive ? {passive: true} : false)
 
     function handleInteraction (buttons, x, y, mods) {
       var keyBindingMode = camera.keyBindingMode