private void WriteKeyframes(ContentWriter output, IList <KeyframeContent> keyframes)
{
Int32 count = keyframes.Count;
output.Write((Int32)count);
for (int i = 0; i < count; i++)
{
KeyframeContent keyframe = keyframes[i];
output.Write(keyframe.Bone);
output.Write(keyframe.Time.Ticks);
output.Write(keyframe.Transform.M11);
output.Write(keyframe.Transform.M12);
output.Write(keyframe.Transform.M13);
output.Write(keyframe.Transform.M21);
output.Write(keyframe.Transform.M22);
output.Write(keyframe.Transform.M23);
output.Write(keyframe.Transform.M31);
output.Write(keyframe.Transform.M32);
output.Write(keyframe.Transform.M33);
output.Write(keyframe.Transform.M41);
output.Write(keyframe.Transform.M42);
output.Write(keyframe.Transform.M43);
}
return;
}
static int CompareKeyframeTimes(KeyframeContent a, KeyframeContent b)
{
int cmpTime = a.Time.CompareTo(b.Time);
if (cmpTime == 0)
{
return(a.Bone.CompareTo(b.Bone));
}
return(cmpTime);
}
// the player currently requires all bones to have a keyframe at time zero
private List <KeyframeContent> EnsureFirstKeyframeExists(TimeSpan duration, List <KeyframeContent> keyframes)
{
int keyframeCount = keyframes.Count;
// find bones
HashSet <int> bonesSet = new HashSet <int>();
int maxBone = 0;
for (int i = 0; i < keyframeCount; i++)
{
int bone = keyframes[i].Bone;
maxBone = Math.Max(maxBone, bone);
bonesSet.Add(bone);
}
int boneCount = bonesSet.Count;
// split bones
List <KeyframeContent>[] boneFrames = new List <KeyframeContent> [maxBone + 1];
for (int i = 0; i < keyframeCount; i++)
{
int bone = keyframes[i].Bone;
if (boneFrames[bone] == null)
{
boneFrames[bone] = new List <KeyframeContent>();
}
boneFrames[bone].Add(keyframes[i]);
}
//
System.Diagnostics.Debug.WriteLine("Duration: " + duration);
System.Diagnostics.Debug.WriteLine("keyframeCount: " + keyframeCount);
for (int b = 0; b < boneFrames.Length; b++)
{
if (boneFrames[b] == null)
{
continue;
}
if (boneFrames[b][0].Time != TimeSpan.Zero)
{
var keyframe0 = new KeyframeContent(boneFrames[b][0].Bone, TimeSpan.Zero, boneFrames[b][0].Transform);
boneFrames[b].Insert(0, keyframe0);
}
}
List <KeyframeContent> newKeyframes = new List <KeyframeContent>();
for (int b = 0; b < boneFrames.Length; b++)
{
if (boneFrames[b] != null)
{
for (int k = 0; k < boneFrames[b].Count; ++k)
{
newKeyframes.Add(boneFrames[b][k]);
}
}
}
newKeyframes.Sort(CompareKeyframeTimes);
return(newKeyframes);
}
