/// <summary>
/// Emit a DMesh3 as a CompressedDMeshStruct
/// </summary>
public static void EmitDMeshCompressed_Minimal(this SceneSerializer s, DMesh3 m, IOutputStream o)
{
SceneSerializer.EmitOptions opt = s.CurrentOptions;
// compressed version - uuencoded byte buffers
// - storing doubles uses roughly same mem as string, but string is only 8 digits precision
// - storing floats saves roughly 50%
// - storing triangles is worse until vertex count > 9999
// - could store as byte or short in those cases...
// - edges and edge ref counts are stored, then use mesh.RebuildFromEdgeRefcounts() to rebuild 3D mesh (same as gSerialization)
o.BeginStruct(IOStrings.CompressedDMeshStruct);
o.AddAttribute(IOStrings.AMeshStorageMode, (int)IOStrings.MeshStorageMode.Minimal);
// need compact mesh to do this
if (m.IsCompactV == false)
{
m = new DMesh3(m, true);
}
o.AddAttribute(IOStrings.AMeshVertices3Compressed, BufferUtil.CompressZLib(m.VerticesBuffer.GetBytes(), opt.FastCompression));
if (opt.StoreMeshVertexNormals && m.HasVertexNormals)
{
o.AddAttribute(IOStrings.AMeshNormals3Compressed, BufferUtil.CompressZLib(m.NormalsBuffer.GetBytes(), opt.FastCompression));
}
if (opt.StoreMeshVertexColors && m.HasVertexColors)
{
o.AddAttribute(IOStrings.AMeshColors3Compressed, BufferUtil.CompressZLib(m.ColorsBuffer.GetBytes(), opt.FastCompression));
}
if (opt.StoreMeshVertexUVs && m.HasVertexUVs)
{
o.AddAttribute(IOStrings.AMeshUVs2Compressed, BufferUtil.CompressZLib(m.UVBuffer.GetBytes(), opt.FastCompression));
}
int[] triangles = new int[3 * m.TriangleCount];
int k = 0;
foreach (int tid in m.TriangleIndices())
{
Index3i t = m.GetTriangle(tid);
triangles[k++] = t.a; triangles[k++] = t.b; triangles[k++] = t.c;
}
o.AddAttribute(IOStrings.AMeshTrianglesCompressed, BufferUtil.CompressZLib(BufferUtil.ToBytes(triangles), opt.FastCompression));
if (opt.StoreMeshFaceGroups && m.HasTriangleGroups)
{
int[] groups = new int[m.TriangleCount];
k = 0;
foreach (int tid in m.TriangleIndices())
{
groups[k++] = m.GetTriangleGroup(tid);
}
o.AddAttribute(IOStrings.AMeshTriangleGroupsCompressed, BufferUtil.CompressZLib(BufferUtil.ToBytes(groups), opt.FastCompression));
}
o.EndStruct();
}
/// <summary>
/// Emit a DMesh3 as a CompressedDMeshStruct
/// </summary>
public static void EmitDMeshCompressed(this SceneSerializer s, DMesh3 m, IOutputStream o)
{
SceneSerializer.EmitOptions opt = s.CurrentOptions;
// compressed version - uuencoded byte buffers
// - storing doubles uses roughly same mem as string, but string is only 8 digits precision
// - storing floats saves roughly 50%
// - storing triangles is worse until vertex count > 9999
// - could store as byte or short in those cases...
// - edges and edge ref counts are stored, then use mesh.RebuildFromEdgeRefcounts() to rebuild 3D mesh (same as gSerialization)
o.BeginStruct(IOStrings.CompressedDMeshStruct);
o.AddAttribute(IOStrings.AMeshStorageMode, (int)IOStrings.MeshStorageMode.EdgeRefCounts);
o.AddAttribute(IOStrings.AMeshVertices3Compressed, BufferUtil.CompressZLib(m.VerticesBuffer.GetBytes(), opt.FastCompression));
if (opt.StoreMeshVertexNormals && m.HasVertexNormals)
{
o.AddAttribute(IOStrings.AMeshNormals3Compressed, BufferUtil.CompressZLib(m.NormalsBuffer.GetBytes(), opt.FastCompression));
}
if (opt.StoreMeshVertexColors && m.HasVertexColors)
{
o.AddAttribute(IOStrings.AMeshColors3Compressed, BufferUtil.CompressZLib(m.ColorsBuffer.GetBytes(), opt.FastCompression));
}
if (opt.StoreMeshVertexUVs && m.HasVertexUVs)
{
o.AddAttribute(IOStrings.AMeshUVs2Compressed, BufferUtil.CompressZLib(m.UVBuffer.GetBytes(), opt.FastCompression));
}
o.AddAttribute(IOStrings.AMeshTrianglesCompressed, BufferUtil.CompressZLib(m.TrianglesBuffer.GetBytes(), opt.FastCompression));
if (opt.StoreMeshFaceGroups && m.HasTriangleGroups)
{
o.AddAttribute(IOStrings.AMeshTriangleGroupsCompressed, BufferUtil.CompressZLib(m.GroupsBuffer.GetBytes(), opt.FastCompression));
}
o.AddAttribute(IOStrings.AMeshEdgesCompressed, BufferUtil.CompressZLib(m.EdgesBuffer.GetBytes(), opt.FastCompression));
o.AddAttribute(IOStrings.AMeshEdgeRefCountsCompressed, BufferUtil.CompressZLib(m.EdgesRefCounts.RawRefCounts.GetBytes(), opt.FastCompression));
o.EndStruct();
}