public void Compress()
{
// First try to find identical sets of keyframes in tracks
for (int t = 0; t < rgbTracks.Length; ++t)
{
RGBTrack trackT = rgbTracks[t];
for (int r = t + 1; r < rgbTracks.Length; ++r)
{
RGBTrack trackR = rgbTracks[r];
// Only try to collapse tracks that are not exactly the same
if (!trackT.Equals(trackR))
{
if (trackR.keyFrameCount == trackT.keyFrameCount)
{
// Compare actual keyframes
bool kfEquals = true;
for (int k = 0; k < trackR.keyFrameCount; ++k)
{
var kfRk = trackR.GetKeyframe(this, (ushort)k);
var kfTk = trackT.GetKeyframe(this, (ushort)k);
if (!kfRk.Equals(kfTk))
{
kfEquals = false;
break;
}
}
if (kfEquals)
{
// Sweet, we can compress the keyframes
// Fix up any other tracks
for (int i = 0; i < rgbTracks.Length; ++i)
{
RGBTrack tr = rgbTracks[i];
if (tr.keyframesOffset > trackR.keyframesOffset)
{
tr.keyframesOffset -= trackR.keyFrameCount;
rgbTracks[i] = tr;
}
}
// Remove the duplicate keyframes
var newKeyframes = new RGBKeyframe[keyframes.Length - trackR.keyFrameCount];
for (int i = 0; i < trackR.keyframesOffset; ++i)
{
newKeyframes[i] = keyframes[i];
}
for (int i = trackR.keyframesOffset + trackR.keyFrameCount; i < keyframes.Length; ++i)
{
newKeyframes[i - trackR.keyFrameCount] = keyframes[i];
}
keyframes = newKeyframes;
// And make R point to the keyframes of T
trackR.keyframesOffset = trackT.keyframesOffset;
rgbTracks[r] = trackR;
}
}
}
}
}
// Then remove duplicate RGB tracks
for (int t = 0; t < rgbTracks.Length; ++t)
{
ref RGBTrack trackT = ref rgbTracks[t];
for (int r = t + 1; r < rgbTracks.Length; ++r)
{
ref RGBTrack trackR = ref rgbTracks[r];
if (trackR.Equals(trackT))
{
// Remove track R and fix anim tracks
// Fix up other animation tracks
for (int j = 0; j < tracks.Length; ++j)
{
ref AnimationTrack trj = ref tracks[j];
if (trj.trackOffset == r)
{
trj.trackOffset = (ushort)t;
}
else if (trj.trackOffset > r)
{
trj.trackOffset--;
}
}
// Remove the duplicate RGBTrack
var newRGBTracks = new RGBTrack[rgbTracks.Length - 1];
for (int j = 0; j < r; ++j)
{
newRGBTracks[j] = rgbTracks[j];
}
for (int j = r + 1; j < rgbTracks.Length; ++j)
{
newRGBTracks[j - 1] = rgbTracks[j];
}
rgbTracks = newRGBTracks;
}
