/* Poly2Tri
 * Copyright (c) 2009-2010, Poly2Tri Contributors
 * http://code.google.com/p/poly2tri/
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * * Neither the name of Poly2Tri nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using System.Collections.Generic;

namespace Poly2Tri
{
    public class PointGenerator
    {
        static readonly Random RNG = new Random();


        public static List<TriangulationPoint> UniformDistribution(int n, double scale)
        {
            List<TriangulationPoint> points = new List<TriangulationPoint>();
            for (int i = 0; i < n; i++)
            {
                points.Add(new TriangulationPoint(scale * (0.5 - RNG.NextDouble()), scale * (0.5 - RNG.NextDouble())));
            }

            return points;
        }


        public static List<TriangulationPoint> UniformGrid(int n, double scale)
        {
            double x = 0;
            double size = scale / n;
            double halfScale = 0.5 * scale;

            List<TriangulationPoint> points = new List<TriangulationPoint>();
            for (int i = 0; i < n + 1; i++)
            {
                x = halfScale - i * size;
                for (int j = 0; j < n + 1; j++)
                {
                    points.Add(new TriangulationPoint(x, halfScale - j * size));
                }
            }

            return points;
        }
    }
}
