// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

edition = "2023";

option optimize_for = LITE_RUNTIME;

package lens;

option features.enum_type = CLOSED;

// Specifies the coordinate system used for geometry protos.
enum CoordinateType {
  // Unspecified default value, per proto best practice.
  COORDINATE_TYPE_UNSPECIFIED = 0;

  // Normalized coordinates.
  NORMALIZED = 1;

  // Image pixel coordinates.
  IMAGE = 2;
}

// Information about a polygon.
message Polygon {
  // Represents a single vertex in the polygon.
  message Vertex {
    float x = 1;
    float y = 2;
  }

  repeated Vertex vertex = 1;

  // Specifies the vertex ordering.
  enum VertexOrdering {
    VERTEX_ORDERING_UNSPECIFIED = 0;
    CLOCKWISE = 1;
    COUNTER_CLOCKWISE = 2;
  }

  VertexOrdering vertex_ordering = 2;

  // Specifies the coordinate type of vertices.
  CoordinateType coordinate_type = 3;
}