array_utility2.h

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/*
**  array_utility2.h
**
**  This is part of Shiokaze, a research-oriented fluid solver for computer graphics.
**  Created by Ryoichi Ando <rand@nii.ac.jp> on Feb 14, 2018.
**
**  Permission is hereby granted, free of charge, to any person obtaining a copy of
**  this software and associated documentation files (the "Software"), to deal in
**  the Software without restriction, including without limitation the rights to use,
**  copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
**  Software, and to permit persons to whom the Software is furnished to do so,
**  subject to the following conditions:
**
**  The above copyright notice and this permission notice shall be included in all copies
**  or substantial portions of the Software.
**
**  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
**  INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
**  PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
**  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
**  CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
**  OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
//
#include "array2.h"
#include "macarray2.h"
#include <cmath>
#include <cstdlib>
//
#ifndef SHKZ_ARRAY_UTILITY2_H
#define SHKZ_ARRAY_UTILITY2_H
//
SHKZ_BEGIN_NAMESPACE
//
namespace array_utility2 {
    template <class T> bool empty( const array2<T> &array ) {
        return array.shape().count() == 0;
    }
    template <class T> bool has_different_values ( const array2<T> &array ) {
        bool result (false);
        bool assigned (false);
        T value;
        array.interruptible_const_serial_actives([&](int i, int j, const auto &it) {
            if( ! assigned ) {
                value = it();
                assigned = true;
            } else if(it()!=value) {
                result = true;
                return true;
            }
            return false;
        });
        return result;
    }
    template <class T> bool has_value_not( const array2<T> &array, const T &v ) {
        bool result (false);
        array.interruptible_const_serial_actives([&](int i, int j, const auto &it) {
            if(it()!=v) {
                result = true;
                return true;
            }
            return false;
        });
        return result;
    }
    template <class T> bool value_exist( const array2<T> &array ) {
        return has_value_not(array,array.get_background_value());
    }
    template <class T> bool levelset_exist( const array2<T> &levelset ) {
        //
        bool hasInside (false);
        levelset.interruptible_const_serial_actives([&](int i, int j, const auto &it){
            if( it() < 0.0 ) {
                hasInside = true;
            }
            return hasInside;
        });
        return hasInside;
    }
    //
};
//
SHKZ_END_NAMESPACE
//
#endif
//