/*
 *   
 * MIT License
 *
 * Copyright (c) 2020 TerraForged
 *
 * 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.
 */

package com.terraforged.core.filter;

import com.terraforged.core.cell.Cell;

public interface Modifier {

    float getModifier(float value);

    default float modify(Cell cell, float value) {
        return value * getModifier(cell.value);
    }

    default Modifier invert() {
        return v -> 1 - getModifier(v);
    }

    static Modifier range(float minValue, float maxValue) {
        return new Modifier() {

            private final float min = minValue;
            private final float max = maxValue;
            private final float range = maxValue - minValue;

            @Override
            public float getModifier(float value) {
                if (value > max) {
                    return 1F;
                }
                if (value < min) {
                    return 0F;
                }
                return (value - min) / range;
            }
        };
    }
}