OpenSim-Test/OpenSim/Region/CoreModules/World/Terrain/Modifiers/FillModifier.cs

/*
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 *       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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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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 */
using System;

using OpenSim.Region.CoreModules.World.Terrain;
using OpenSim.Region.Framework.Interfaces;

namespace OpenSim.Region.CoreModules.World.Terrain.Modifiers
{
    public class FillModifier : TerrainModifier
    {

        public FillModifier(ITerrainModule module) : base(module)
        {
        }

        public override string ModifyTerrain(ITerrainChannel map, string[] args)
        {
            string result;
            if (args.Length < 3)
            {
                result = "Usage: " + GetUsage();
            }
            else
            {
                TerrainModifierData data;
                result = this.parseParameters(args, out data);

                // Context-specific validation
                if (result == String.Empty)
                {
                    if (data.shape == String.Empty)
                    {
                        data.shape = "rectangle";
                        data.x0 = 0;
                        data.y0 = 0;
                        data.dx = map.Width;
                        data.dy = map.Height;
                    }
                }

                // if it's all good, then do the work
                if (result == String.Empty)
                {
                    this.applyModification(map, data);
                }
            }

            return result;
        }

        public override string GetUsage()
        {
            string val = "fill <height> [ -rec=x1,y1,dx[,dy] | -ell=x0,y0,rx[,ry] ] [-taper=<height2>]"
                                + "\nSets all points within the specified range to the specified value.";
            return val;
        }

        public override float operate(float[,] map, TerrainModifierData data, int x, int y)
        {
            float factor = this.computeBevel(data, x, y);
            float result = data.elevation - (data.elevation - data.bevelevation) * factor;
            return result;
        }

    }

}