Remove timer and ignore the preview functionality for now

space_view3d_virtual_reality/operator.py

@@ -57,11 +57,13 @@ class VirtualRealityDisplayOperator(bpy.types.Operator):
             area.tag_redraw()
             return {'FINISHED'}
 
+        """
         if event.type == 'TIMER':
             self.loop(context)
 
             if vr.preview_scale and context.area:
                 area.tag_redraw()
+        """
 
         return {'PASS_THROUGH'}
 
@@ -107,11 +109,6 @@ class VirtualRealityDisplayOperator(bpy.types.Operator):
 
     def _quit(self, context):
         """actual quit"""
-        wm = context.window_manager
-
-        if self._timer:
-            wm.event_timer_remove(self._timer)
-            del self._timer
 
         if self._handle:
             bpy.types.SpaceView3D.draw_handler_remove(self._handle, 'WINDOW')
@@ -154,13 +151,12 @@ class VirtualRealityDisplayOperator(bpy.types.Operator):
         self._area_hash = hash(context.area)
 
         # setup modal
-        self._timer = wm.event_timer_add(1.0 / 75.0, context.window) # 75 Hz
         self._handle = bpy.types.SpaceView3D.draw_handler_add(self._draw_callback_px, (context,), 'WINDOW', 'POST_PIXEL')
         wm.modal_handler_add(self)
 
         return True
 
-    def loop(self, context):
+    def _loop(self, context):
         """
         Get fresh tracking data and render into the FBO
         """
@@ -181,10 +177,18 @@ class VirtualRealityDisplayOperator(bpy.types.Operator):
     def _draw_callback_px(self, context):
         """callback function, run every time the viewport is refreshed"""
 
-        if self._area_hash == hash(context.area):
-            wm = context.window_manager
-            vr = wm.virtual_reality
-            self._preview.loop(vr.preview_scale)
+        area = context.area
+        if not self._area_hash == hash(area):
+            return
+
+        self._loop(context)
+        area.tag_redraw()
+
+        """
+        wm = context.window_manager
+        vr = wm.virtual_reality
+        self._preview.loop(vr.preview_scale)
+        """
 
     def _error_callback(self, message, is_fatal):
         """

space_view3d_virtual_reality/ui.py

@@ -25,7 +25,7 @@ class VirtualRealityPanel(bpy.types.Panel):
             col.operator("view3d.virtual_reality_display", text="Virtual Reality", icon="X").action='DISABLE'
 
             col.separator()
-            col.prop(vr, "preview_scale", text="Preview")
+            # col.prop(vr, "preview_scale", text="Preview")
 
             col.label(text=vr.error_message)