// -*- mode:c++; tab-width:2; indent-tabs-mode:nil; c-basic-offset:2 -*-
#ifndef __ZXING_COMMON_DETECTOR_MATHUTILS_H__
#define __ZXING_COMMON_DETECTOR_MATHUTILS_H__
/*
 *  Copyright 2012 ZXing authors 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.
 */

#include <cmath>

namespace zxing {
    namespace common {
        namespace detector {

            class MathUtils {
            private:
                MathUtils();
                ~MathUtils();
            public:

                /**
                 * Ends up being a bit faster than {@link Math#round(float)}. This merely rounds its
                 * argument to the nearest int, where x.5 rounds up to x+1.
                 */
                static inline int round(float d) {
                    return (int)(d + 0.5f);
                }

                static inline float distance(float aX, float aY, float bX, float bY) {
                    float xDiff = aX - bX;
                    float yDiff = aY - bY;
                    return sqrt(xDiff * xDiff + yDiff * yDiff);
                }

                static inline float distance(int aX, int aY, int bX, int bY) {
                    int xDiff = aX - bX;
                    int yDiff = aY - bY;
                    return sqrt(float(xDiff * xDiff + yDiff * yDiff));
                }
            };

        }
    }
}

#endif