CentralizedControl/Veldrid.Common/Poly2Tri/Triangulation/Util/PointGenerator.cs

/* Poly2Tri
 * Copyright (c) 2009-2010, Poly2Tri Contributors
 * http://code.google.com/p/poly2tri/
 *
 * All rights reserved.
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 * 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
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 */

using System;
using System.Collections.Generic;

namespace Veldrid.Common.Poly2Tri.Triangulation.Util
{
	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;
		}
	}
}