Fix WebGui y frontend in machine vision exercise

Author: Jepear19

exercises/machine_vision/frontend/css/GUICanvas.css

@@ -17,7 +17,6 @@ def __init__(self, host="ws://127.0.0.1:2303", freq=30.0):
         # Execution control vars
         self.out_period = 1.0 / freq
         self.right_image = None
-        self.left_image = None
         self.image_lock = threading.Lock()
         self.ack = True
         self.ack_frontend = True
@@ -27,7 +26,7 @@ def __init__(self, host="ws://127.0.0.1:2303", freq=30.0):
         self.world_name = "empty"
 
         self.host = host
-        self.msg = {"image_right": "", "image_left": ""}
+        self.msg = {"image_right": ""}
 
         self.ideal_cycle = 80
         self.real_time_factor = 0
@@ -48,7 +47,7 @@ def gui_out_thread(self):
             with self.ack_lock:
                 with self.image_lock:
                     if self.ack:
-                        if np.any(self.left_image) or np.any(self.right_image):
+                        if np.any(self.right_image):
                             self.update_gui()
                             self.ack = False
 
@@ -60,14 +59,6 @@ def gui_out_thread(self):
     # Prepares and send image to the websocket server
     def update_gui(self):
 
-        if np.any(self.left_image):
-            _, encoded_left_image = cv2.imencode(".JPEG", self.left_image)
-            b64_left = base64.b64encode(encoded_left_image).decode("utf-8")
-            shape_left = self.left_image.shape
-        else:
-            b64_left = None
-            shape_left = 0
-
         if np.any(self.right_image):
             _, encoded_right_image = cv2.imencode(".JPEG", self.right_image)
             b64_right = base64.b64encode(encoded_right_image).decode("utf-8")
@@ -76,24 +67,16 @@ def update_gui(self):
             b64_right = None
             shape_right = 0
 
-        payload_left = {
-            "image_left": b64_left,
-            "shape_left": shape_left,
-        }
         payload_right = {
             "image_right": b64_right,
             "shape_right": shape_right,
         }
-        self.msg["image_left"] = json.dumps(payload_left)
+
         self.msg["image_right"] = json.dumps(payload_right)
         message = json.dumps(self.msg)
         self.send_to_client(message)
 
     # Functions to set the next image to be sent
-    def setLeftImage(self, image):
-        with self.image_lock:
-            self.left_image = image
-
     def setRightImage(self, image):
         with self.image_lock:
             self.right_image = image
@@ -108,8 +91,4 @@ def setRightImage(self, image):
 
 # Expose the user functions
 def showImage(image):
-    gui.setRightImage(image)
-
-
-def showLeftImage(image):
-    gui.setLeftImage(image)
+    gui.setRightImage(image)