ardupilot: add ZED_VISION_POSITION_DELTA

message_definitions/v1.0/ardupilotmega.xml

@@ -1374,5 +1374,14 @@
       <field name="f_dot" type="float">projection operator derivative</field>
       <field name="u" type="float">u adaptive controlled output command</field>
     </message>
+    <!-- ZED camera attitude and position delta message -->
+    <message id="11011" name="ZED_VISION_POSITION_DELTA">
+      <description>ZED camera vision based attitude and position deltas</description>
+      <field name="time_usec" type="uint64_t">Timestamp (microseconds, synced to UNIX time or since system boot)</field>
+      <field name="time_delta_usec" type="uint64_t">Time in microseconds since the last reported camera frame</field>
+      <field type="float[3]" name="angle_delta">Rotation in radians in body frame from previous to current frame using right-hand coordinate system (0=roll, 1=pitch, 2=yaw)</field>
+      <field type="float[3]" name="position_delta">Change in position in meters from previous to current frame rotated into body frame (0=forward, 1=right, 2=down)</field>
+      <field type="float" name="confidence">normalised confidence value from 0 to 100</field>
+    </message>
   </messages>
 </mavlink>