Add camera tracking proto.

Signed-off-by: Benjamin Perseghetti <[email protected]>

proto/gz/msgs/cameratrack.proto

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2024 Rudis Laboratories
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+*/
+
+syntax = "proto3";
+package gz.msgs;
+option java_package = "com.gz.msgs";
+option java_outer_classname = "CameraTrackProtos";
+
+/// \ingroup gz.msgs
+/// \interface CameraTrack
+/// \brief Message for camera tracking
+
+import "gz/msgs/header.proto";
+import "gz/msgs/vector3d.proto";
+
+message CameraTrack
+{
+  enum TrackMode
+  {
+    /// \brief TRACK observes a target from fixed x,y,z camera point with pgain allowing only for orientation change.
+    TRACK     = 0;
+    /// \brief FOLLOW moves with a target with an offset x,y,z camera and following pgain.
+    FOLLOW    = 1;
+  }
+
+  /// \brief Optional header data
+  Header header         = 1;
+  TrackMode track_mode  = 2;
+  string target         = 3;
+  Vector3d offset       = 4;
+  double pgain          = 5;
+}