// Copyright 2020 The MediaPipe Authors.
//
// 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 = "proto2";

package mediapipe;

message TimedModelMatrixProto {
  // 4x4 model matrix stored in ROW major order.
  repeated float matrix_entries = 1 [packed = true];
  // Timestamp of this model matrix in milliseconds.
  optional int64 time_msec = 2 [default = 0];
  // Unique per object id
  optional int32 id = 3 [default = -1];
}

message TimedModelMatrixProtoList {
  repeated TimedModelMatrixProto model_matrix = 1;
}

// For convenience, when the desired information or transformation can be
// encoded into vectors (e.g. when the matrix represents a scale or Euler-angle-
// based rotation operation.)
message TimedVectorProto {
  // The vector values themselves.
  repeated float vector_entries = 1 [packed = true];

  // Timestamp of this vector in milliseconds.
  optional int64 time_msec = 2 [default = 0];

  // Unique per object id
  optional int32 id = 3 [default = -1];
}

message TimedVectorProtoList {
  repeated TimedVectorProto vector_list = 1;
}