/*
 * 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:
 *     * 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 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
 * (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.IO;

using OpenSim.Framework;

using OpenMetaverse;

namespace OpenSim.Region.Framework.Interfaces
{
    public interface ITerrainModule
    {
        void LoadFromFile(string filename);
        void SaveToFile(string filename);
        void ModifyTerrain(UUID user, Vector3 pos, byte size, byte action, UUID agentId);

        /// <summary>
        /// Taint the terrain. This will lead to sending the terrain data to the clients again.
        /// Use this if you change terrain data outside of the terrain module (e.g. in osTerrainSetHeight)
        /// </summary>
        void TaintTerrain();
        
        /// <summary>
        /// When a client initially connects, all the terrain must be pushed to the viewer.
        /// This call causes all the terrain patches to be sent to the client.
        /// </summary>
        void PushTerrain(IClientAPI pClient);
        
        /// <summary>
        /// Load a terrain from a stream.
        /// </summary>
        /// <param name="filename">
        /// Only required here to identify the image type.  Not otherwise used in the loading itself.
        /// </param>
        /// <param name="stream"></param>
        void LoadFromStream(string filename, Stream stream);
        void LoadFromStream(string filename, Vector3 displacement, float radianRotation, Vector2 rotationDisplacement, Stream stream);
        void LoadFromStream(string filename, System.Uri pathToTerrainHeightmap);
        /// <summary>
        /// Save a terrain to a stream.
        /// </summary>
        /// <param name="filename">
        /// Only required here to identify the image type.  Not otherwise used in the saving itself.
        /// </param>
        /// <param name="stream"></param>
        void SaveToStream(string filename, Stream stream);

        void InstallPlugin(string name, ITerrainEffect plug);

        void UndoTerrain(ITerrainChannel channel);
    }
}