corrade-vassal – Rev 1
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/*
* Copyright (c) 2006-2014, openmetaverse.org
* All rights reserved.
*
* - 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.
* - Neither the name of the openmetaverse.org 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 LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 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;
using System.IO;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
namespace OpenMetaverse.Assets
{
/// <summary>
/// Represents Mesh asset
/// </summary>
public class AssetMesh : Asset
{
/// <summary>Override the base classes AssetType</summary>
public override AssetType AssetType { get { return AssetType.Mesh; } }
/// <summary>
/// Decoded mesh data
/// </summary>
public OSDMap MeshData;
/// <summary>Initializes a new instance of an AssetMesh object</summary>
public AssetMesh() { }
/// <summary>Initializes a new instance of an AssetMesh object with parameters</summary>
/// <param name="assetID">A unique <see cref="UUID"/> specific to this asset</param>
/// <param name="assetData">A byte array containing the raw asset data</param>
public AssetMesh(UUID assetID, byte[] assetData)
: base(assetID, assetData)
{
}
/// <summary>
/// TODO: Encodes Collada file into LLMesh format
/// </summary>
public override void Encode() { }
/// <summary>
/// Decodes mesh asset. See <see cref="OpenMetaverse.Rendering.FacetedMesh.TryDecodeFromAsset"/>
/// to furter decode it for rendering</summary>
/// <returns>true</returns>
public override bool Decode()
{
try
{
MeshData = new OSDMap();
using (MemoryStream data = new MemoryStream(AssetData))
{
OSDMap header = (OSDMap)OSDParser.DeserializeLLSDBinary(data);
MeshData["asset_header"] = header;
long start = data.Position;
foreach(string partName in header.Keys)
{
if (header[partName].Type != OSDType.Map)
{
MeshData[partName] = header[partName];
continue;
}
OSDMap partInfo = (OSDMap)header[partName];
if (partInfo["offset"] < 0 || partInfo["size"] == 0)
{
MeshData[partName] = partInfo;
continue;
}
byte[] part = new byte[partInfo["size"]];
Buffer.BlockCopy(AssetData, partInfo["offset"] + (int)start, part, 0, part.Length);
MeshData[partName] = Helpers.ZDecompressOSD(part);
}
}
return true;
}
catch (Exception ex)
{
Logger.Log("Failed to decode mesh asset", Helpers.LogLevel.Error, ex);
return false;
}
}
}
}