vision/geometry.go

// Copyright 2016 Google Inc. All Rights Reserved.
//
// 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.

package vision

import (
	"image"

	pb "google.golang.org/genproto/googleapis/cloud/vision/v1"
)

func pointFromProto(v *pb.Vertex) image.Point {
	return image.Point{X: int(v.X), Y: int(v.Y)}
}

func boundingPolyFromProto(b *pb.BoundingPoly) []image.Point {
	if b == nil {
		return nil
	}
	var ps []image.Point
	for _, v := range b.Vertices {
		ps = append(ps, pointFromProto(v))
	}
	return ps
}