Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) Stichting Akvo (Akvo Foundation)
 *
 * This file is part of Akvo Caddisfly.
 *
 * Akvo Caddisfly is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Akvo Caddisfly is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Akvo Caddisfly. If not, see <http://www.gnu.org/licenses/>.
 */

import android.graphics.Color;

public class Main {
    /**
     * Get the color that lies in between two colors
     *
     * @param startColor The first color
     * @param endColor   The last color
     * @param n          Number of steps between the two colors
     * @param i          The index at which the color is to be calculated
     * @return The newly generated color
     */
    public static int getGradientColor(int startColor, int endColor, int n, int i) {
        return Color.rgb(interpolate(Color.red(startColor), Color.red(endColor), n, i),
                interpolate(Color.green(startColor), Color.green(endColor), n, i),
                interpolate(Color.blue(startColor), Color.blue(endColor), n, i));
    }

    /**
     * Get the color component that lies between the two color component points
     *
     * @param start The first color component value
     * @param end   The last color component value
     * @param n     Number of steps between the two colors
     * @param i     The index at which the color is to be calculated
     * @return The calculated color component
     */
    private static int interpolate(int start, int end, int n, int i) {
        return (int) ((float) start + ((((float) end - (float) start) / n) * i));
    }
}