public Assimp.Animation assimpExport(ref Assimp.Scene scn)
{
Assimp.Animation asAnim = new Assimp.Animation();
asAnim.Name = Anim;
//Make sure keyframe data is loaded from the files
if (!loaded)
{
fetchAnimMetaData();
loaded = true;
}
asAnim.TicksPerSecond = 60;
asAnim.DurationInTicks = animMeta.FrameCount;
float time_interval = 1.0f / (float)asAnim.TicksPerSecond;
//Add Node-Bone Channels
for (int i = 0; i < animMeta.NodeCount; i++)
{
string name = animMeta.NodeData[i].Node;
Assimp.NodeAnimationChannel mChannel = new Assimp.NodeAnimationChannel();
mChannel.NodeName = name;
//mChannel.PostState = Assimp.AnimationBehaviour.Linear;
//mChannel.PreState = Assimp.AnimationBehaviour.Linear;
//Export Keyframe Data
for (int j = 0; j < animMeta.FrameCount; j++)
{
//Position
Assimp.VectorKey vk = new Assimp.VectorKey(j * time_interval, MathUtils.convertVector(animMeta.anim_positions[name][j]));
mChannel.PositionKeys.Add(vk);
//Rotation
Assimp.QuaternionKey qk = new Assimp.QuaternionKey(j * time_interval, MathUtils.convertQuaternion(animMeta.anim_rotations[name][j]));
mChannel.RotationKeys.Add(qk);
//Scale
Assimp.VectorKey sk = new Assimp.VectorKey(j * time_interval, MathUtils.convertVector(animMeta.anim_scales[name][j]));
mChannel.ScalingKeys.Add(sk);
}
asAnim.NodeAnimationChannels.Add(mChannel);
}
return(asAnim);
}
private Keyframe[][] GenerateRotationTrack(List <Assimp.QuaternionKey> keys, Bone bone)
{
Keyframe[] x_track = new Keyframe[keys.Count];
Keyframe[] y_track = new Keyframe[keys.Count];
Keyframe[] z_track = new Keyframe[keys.Count];
for (int i = 0; i < keys.Count; i++)
{
Assimp.QuaternionKey current_key = keys[i];
Quaternion value = new Quaternion(current_key.Value.X, current_key.Value.Y, current_key.Value.Z, current_key.Value.W);
Vector3 quat_as_vec = QuaternionExtensions.ToEulerAngles(value);
x_track[i].Key = quat_as_vec.X;
x_track[i].Time = (float)current_key.Time;
y_track[i].Key = quat_as_vec.Y;
y_track[i].Time = (float)current_key.Time;
z_track[i].Key = quat_as_vec.Z;
z_track[i].Time = (float)current_key.Time;
}
return(new Keyframe[][] { x_track, y_track, z_track });
}
