/// <summary>
/// Creates a new VertexAnimationTrack automatically associated with a Vertex.
/// </summary>
/// <param name="index">Handle to give the track, used for accessing the track later.</param>
/// <param name="target">Vertex object which will be affected by this track.</param>
/// <returns></returns>
public VertexAnimationTrack CreateVertexTrack(ushort handle, VertexData targetVertexData,
VertexAnimationType type)
{
// create a new track and set it's target
VertexAnimationTrack track = CreateVertexTrack(handle, type);
track.TargetVertexData = targetVertexData;
return(track);
}
/// <summary>
/// Creates an VertexAnimationTrack.
/// </summary>
/// <param name="handle">Handle to give the track, used for accessing the track later.</param>
/// <returns></returns>
public VertexAnimationTrack CreateVertexTrack(ushort handle, VertexAnimationType animType)
{
VertexAnimationTrack track = new VertexAnimationTrack(this, handle, animType);
// add the track to the list
vertexTrackList[handle] = track;
return(track);
}
protected void WriteAnimationTrack( BinaryWriter writer, VertexAnimationTrack track )
{
var start_offset = writer.Seek( 0, SeekOrigin.Current );
WriteChunk( writer, MeshChunkID.AnimationTrack, 0 );
WriteUShort( writer, (ushort)track.AnimationType );
WriteUShort( writer, track.Handle );
foreach ( var keyFrame in track.KeyFrames )
{
if ( keyFrame is VertexMorphKeyFrame )
{
var vmkf = keyFrame as VertexMorphKeyFrame;
WriteMorphKeyframe( writer, vmkf );
}
else if ( keyFrame is VertexPoseKeyFrame )
{
var vpkf = keyFrame as VertexPoseKeyFrame;
WritePoseKeyframe( writer, vpkf );
}
}
var end_offset = writer.Seek( 0, SeekOrigin.Current );
writer.Seek( (int)start_offset, SeekOrigin.Begin );
WriteChunk( writer, MeshChunkID.AnimationTrack, (int)( end_offset - start_offset ) );
writer.Seek( (int)end_offset, SeekOrigin.Begin );
}
protected void ReadPoseKeyframe( BinaryReader reader, VertexAnimationTrack track )
{
var time = ReadFloat( reader );
var vkf = track.CreateVertexPoseKeyFrame( time );
if ( !IsEOF( reader ) )
{
var chunkID = ReadChunk( reader );
while ( !IsEOF( reader ) && chunkID == MeshChunkID.AnimationPoseRef )
{
switch ( chunkID )
{
case MeshChunkID.AnimationPoseRef:
{
var poseIndex = ReadUShort( reader );
var influence = ReadFloat( reader );
vkf.AddPoseReference( poseIndex, influence );
break;
}
}
if ( !IsEOF( reader ) )
{
chunkID = ReadChunk( reader );
}
}
if ( !IsEOF( reader ) )
{
// backpedal to the start of chunk
Seek( reader, -ChunkOverheadSize );
}
}
}
protected void ReadMorphKeyframe( BinaryReader reader, VertexAnimationTrack track )
{
var time = ReadFloat( reader );
var mkf = track.CreateVertexMorphKeyFrame( time );
var vertexCount = track.TargetVertexData.vertexCount;
// create/populate vertex buffer
var decl = HardwareBufferManager.Instance.CreateVertexDeclaration();
decl.AddElement( 0, 0, VertexElementType.Float3, VertexElementSemantic.Position );
var buffer = HardwareBufferManager.Instance.CreateVertexBuffer( decl, vertexCount, BufferUsage.Static, true );
// lock the buffer for editing
var vertices = buffer.Lock( BufferLocking.Discard );
// stuff the floats into the normal buffer
ReadFloats( reader, vertexCount*3, vertices );
// unlock the buffer to commit
buffer.Unlock();
mkf.VertexBuffer = buffer;
}
/// <summary>
/// Creates an VertexAnimationTrack.
/// </summary>
/// <param name="handle">Handle to give the track, used for accessing the track later.</param>
/// <param name="animType"></param>
/// <returns></returns>
public VertexAnimationTrack CreateVertexTrack( ushort handle, VertexAnimationType animType )
{
VertexAnimationTrack track = new VertexAnimationTrack( this, handle, animType );
// add the track to the list
vertexTrackList[ handle ] = track;
return track;
}
public void Apply(Entity entity, float time, float weight,
bool software, bool hardware)
{
foreach (KeyValuePair <ushort, VertexAnimationTrack> pair in vertexTrackList)
{
int handle = pair.Key;
VertexAnimationTrack track = pair.Value;
VertexData swVertexData;
VertexData hwVertexData;
VertexData origVertexData;
bool firstAnim = false;
if (handle == 0)
{
// shared vertex data
firstAnim = !entity.BuffersMarkedForAnimation;
swVertexData = entity.SoftwareVertexAnimVertexData;
hwVertexData = entity.HardwareVertexAnimVertexData;
origVertexData = entity.Mesh.SharedVertexData;
entity.MarkBuffersUsedForAnimation();
}
else
{
// sub entity vertex data (-1)
SubEntity s = entity.GetSubEntity(handle - 1);
firstAnim = !s.BuffersMarkedForAnimation;
swVertexData = s.SoftwareVertexAnimVertexData;
hwVertexData = s.HardwareVertexAnimVertexData;
origVertexData = s.SubMesh.vertexData;
s.MarkBuffersUsedForAnimation();
}
// Apply to both hardware and software, if requested
if (software)
{
Debug.Assert(!EqualityComparer <VertexData> .ReferenceEquals(origVertexData, swVertexData));
if (firstAnim && track.AnimationType == VertexAnimationType.Pose)
{
// First time through for a piece of pose animated vertex data
// We need to copy the original position values to the temp accumulator
VertexElement origelem =
origVertexData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.Position);
VertexElement destelem =
swVertexData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.Position);
HardwareVertexBuffer origBuffer =
origVertexData.vertexBufferBinding.GetBuffer(origelem.Source);
HardwareVertexBuffer destBuffer =
swVertexData.vertexBufferBinding.GetBuffer(destelem.Source);
// Debug.Assert(!EqualityComparer<HardwareVertexBuffer>.ReferenceEquals(origBuffer, destBuffer));
if (!EqualityComparer <HardwareVertexBuffer> .ReferenceEquals(origBuffer, destBuffer))
{
destBuffer.CopyData(origBuffer, 0, 0, destBuffer.Size, true);
}
}
track.TargetMode = VertexAnimationTargetMode.Software;
track.ApplyToVertexData(swVertexData, time, weight, entity.Mesh.PoseList);
}
if (hardware)
{
track.TargetMode = VertexAnimationTargetMode.Hardware;
track.ApplyToVertexData(hwVertexData, time, weight, entity.Mesh.PoseList);
}
}
}
protected void ReadMorphKeyframe(BinaryMemoryReader reader, VertexAnimationTrack track)
{
float time = ReadFloat(reader);
VertexMorphKeyFrame mkf = track.CreateVertexMorphKeyFrame(time);
int vertexCount = track.TargetVertexData.vertexCount;
// create/populate vertex buffer
HardwareVertexBuffer buffer =
HardwareBufferManager.Instance.CreateVertexBuffer(
VertexElement.GetTypeSize(VertexElementType.Float3),
vertexCount, BufferUsage.Static, true);
// lock the buffer for editing
IntPtr vertices = buffer.Lock(BufferLocking.Discard);
// stuff the floats into the normal buffer
ReadFloats(reader, vertexCount * 3, vertices);
// unlock the buffer to commit
buffer.Unlock();
mkf.VertexBuffer = buffer;
}
