opensim/OpenSim/Region/Physics/Manager/ZeroMesher.cs

/*
 * Copyright (c) Contributors, http://opensimulator.org/
 * See CONTRIBUTORS.TXT for a full list of copyright holders.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 *       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 the OpenSimulator Project 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 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
 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

using System;
using OpenSim.Framework;
using OpenMetaverse;
using Nini.Config;

/*
 * This is the zero mesher.
 * Whatever you want him to mesh, he can't, telling you that by responding with a null pointer.
 * Effectivly this is for switching off meshing and for testing as each physics machine should deal
 * with the null pointer situation.
 * But it's also a convenience thing, as physics machines can rely on having a mesher in any situation, even
 * if it's a dump one like this.
 * Note, that this mesher is *not* living in a module but in the manager itself, so
 * it's always availabe and thus the default in case of configuration errors
*/

namespace OpenSim.Region.Physics.Manager
{
    public class ZeroMesherPlugin : IMeshingPlugin
    {
        public ZeroMesherPlugin()
        {
        }

        public string GetName()
        {
            return "ZeroMesher";
        }

        public IMesher GetMesher(IConfigSource config)
        {
            return new ZeroMesher();
        }
    }

    public class ZeroMesher : IMesher
    {
        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
        {
            return CreateMesh(primName, primShape, size, lod, false, false);
        }

        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical)
        {
            return CreateMesh(primName, primShape, size, lod, false, false);
        }

        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool shouldCache)
        {
            // Remove the reference to the encoded JPEG2000 data so it can be GCed
            primShape.SculptData = OpenMetaverse.Utils.EmptyBytes;

            return null;
        }
    }
}