/*
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 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
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 * modification, are permitted provided that the following conditions are met:
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 *     * 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.
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 *       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 DEVELOPERS ``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
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 */

using System;
using NUnit.Framework;
using OpenSim.Region.Environment.Modules.World.Terrain.PaintBrushes;

namespace OpenSim.Region.Environment.Modules.World.Terrain.Tests
{
    [TestFixture]
    public class TerrainTest
    {
        [Test]
        public void BrushTest()
        {
            TerrainChannel x = new TerrainChannel(256, 256);
            ITerrainPaintableEffect effect = new RaiseSphere();

            effect.PaintEffect(x, 128.0, 128.0, 100, 0.1);
            Assert.That(x[128, 128] > 0.0, "Raise brush not raising values.");
            Assert.That(x[0, 128] > 0.0, "Raise brush lowering edge values.");

            x = new TerrainChannel(256, 256);
            effect = new LowerSphere();

            effect.PaintEffect(x, 128.0, 128.0, 100, 0.1);
            Assert.That(x[128, 128] < 0.0, "Lower not lowering values.");
            Assert.That(x[0, 128] < 0.0, "Lower brush affecting edge values.");
        }

        [Test]
        public void TerrainChannelTest()
        {
            TerrainChannel x = new TerrainChannel(256, 256);
            Assert.That(x[0, 0] == 0.0, "Terrain not initialising correctly.");

            x[0, 0] = 1.0;
            Assert.That(x[0, 0] == 1.0, "Terrain not setting values correctly.");

            x[0, 0] = 0;
            x[0, 0] += 5.0;
            x[0, 0] -= 1.0;
            Assert.That(x[0, 0] == 4.0, "Terrain addition/subtraction error.");

            x[0, 0] = Math.PI;
            double[,] doublesExport = x.GetDoubles();
            Assert.That(doublesExport[0, 0] == Math.PI, "Export to double[,] array not working correctly.");

            x[0, 0] = 1.0;
            float[] floatsExport = x.GetFloatsSerialised();
            Assert.That(floatsExport[0] == 1.0f, "Export to float[] not working correctly.");

            x[0, 0] = 1.0;
            Assert.That(x.Tainted(0, 0), "Terrain channel tainting not working correctly.");
            Assert.That(!x.Tainted(0, 0), "Terrain channel tainting not working correctly.");

            TerrainChannel y = x.Copy();
            Assert.That(!ReferenceEquals(x, y), "Terrain copy not duplicating correctly.");
            Assert.That(!ReferenceEquals(x.GetDoubles(), y.GetDoubles()), "Terrain array not duplicating correctly.");
        }
    }
}