/// <summary>
/// Upgrades old animations (GR2 files with header version v6) to the new CurveData format
/// </summary>
public void UpgradeToGr7()
{
// Skip if we've already upgraded
if (this.CurveData != null)
{
return;
}
if (this.Degree == 0)
{
// Degree 0 curves are identities in all cases
var curve = new DaIdentity();
curve.CurveDataHeader_DaIdentity = new CurveDataHeader();
curve.CurveDataHeader_DaIdentity.Format = (byte)CurveFormat.DaIdentity;
curve.CurveDataHeader_DaIdentity.Degree = 0;
this.CurveData = curve;
}
else if (this.Degree == 2)
{
if (this.Knots == null || this.Controls == null)
{
throw new InvalidOperationException("Could not upgrade animation curve: knots/controls unavailable");
}
// Degree 2 curves are stored in K32fC32f (v6 didn't support multiple curve formats)
var curve = new DaK32fC32f();
curve.CurveDataHeader_DaK32fC32f = new CurveDataHeader();
curve.CurveDataHeader_DaK32fC32f.Format = (byte)CurveFormat.DaK32fC32f;
curve.CurveDataHeader_DaK32fC32f.Degree = 2;
curve.Controls = Controls;
curve.Knots = Knots;
this.CurveData = curve;
}
else
{
throw new InvalidOperationException("Could not upgrade animation curve: Unsupported curve degree");
}
}
public static TransformTrack FromKeyframes(KeyframeTrack keyframes)
{
var track = new TransformTrack();
track.Flags = 0;
var translateTimes = keyframes.Keyframes.Where(f => f.Value.HasTranslation).Select(f => f.Key).ToList();
var translations = keyframes.Keyframes.Where(f => f.Value.HasTranslation).Select(f => f.Value.Translation).ToList();
if (translateTimes.Count == 1)
{
var posCurve = new D3Constant32f();
posCurve.CurveDataHeader_D3Constant32f = new CurveDataHeader {
Format = (int)CurveFormat.D3Constant32f, Degree = 2
};
posCurve.Controls = new float[3] {
translations[0].X, translations[0].Y, translations[0].Z
};
track.PositionCurve = new AnimationCurve {
CurveData = posCurve
};
}
else
{
var posCurve = new DaK32fC32f();
posCurve.CurveDataHeader_DaK32fC32f = new CurveDataHeader {
Format = (int)CurveFormat.DaK32fC32f, Degree = 2
};
posCurve.SetKnots(translateTimes);
posCurve.SetPoints(translations);
track.PositionCurve = new AnimationCurve {
CurveData = posCurve
};
}
var rotationTimes = keyframes.Keyframes.Where(f => f.Value.HasRotation).Select(f => f.Key).ToList();
var rotations = keyframes.Keyframes.Where(f => f.Value.HasRotation).Select(f => f.Value.Rotation).ToList();
if (rotationTimes.Count == 1)
{
var rotCurve = new D4Constant32f();
rotCurve.CurveDataHeader_D4Constant32f = new CurveDataHeader {
Format = (int)CurveFormat.D4Constant32f, Degree = 2
};
rotCurve.Controls = new float[4] {
rotations[0].X, rotations[0].Y, rotations[0].Z, rotations[0].W
};
track.OrientationCurve = new AnimationCurve {
CurveData = rotCurve
};
}
else
{
var rotCurve = new DaK32fC32f();
rotCurve.CurveDataHeader_DaK32fC32f = new CurveDataHeader {
Format = (int)CurveFormat.DaK32fC32f, Degree = 2
};
rotCurve.SetKnots(rotationTimes);
rotCurve.SetQuaternions(rotations);
track.OrientationCurve = new AnimationCurve {
CurveData = rotCurve
};
}
var scaleTimes = keyframes.Keyframes.Where(f => f.Value.HasScaleShear).Select(f => f.Key).ToList();
var scales = keyframes.Keyframes.Where(f => f.Value.HasScaleShear).Select(f => f.Value.ScaleShear).ToList();
if (scaleTimes.Count == 1)
{
var scaleCurve = new DaConstant32f();
scaleCurve.CurveDataHeader_DaConstant32f = new CurveDataHeader {
Format = (int)CurveFormat.DaConstant32f, Degree = 2
};
var m = scales[0];
scaleCurve.Controls = new List <float>
{
m[0, 0], m[0, 1], m[0, 2],
m[1, 0], m[1, 1], m[1, 2],
m[2, 0], m[2, 1], m[2, 2]
};
track.ScaleShearCurve = new AnimationCurve {
CurveData = scaleCurve
};
}
else
{
var scaleCurve = new DaK32fC32f();
scaleCurve.CurveDataHeader_DaK32fC32f = new CurveDataHeader {
Format = (int)CurveFormat.DaK32fC32f, Degree = 2
};
scaleCurve.SetKnots(scaleTimes);
scaleCurve.SetMatrices(scales);
track.ScaleShearCurve = new AnimationCurve {
CurveData = scaleCurve
};
}
return(track);
}
public TransformTrack MakeTrack()
{
var track = new TransformTrack();
track.Flags = 0;
track.Name = Bone.Name;
var positions = Transforms.Select(m => m.ExtractTranslation()).ToList();
var rotations = Transforms.Select(m => m.ExtractRotation()).ToList();
var scales = Transforms.Select(m => ScaleToScaleShear(m.ExtractScale())).ToList();
// Quaternion sign fixup
// Since GR2 interpolation operates on the raw XYZ values of the quaternion, two subsequent quaternions
// that express the same rotation (eg. [1, 0.5, 0.5, -0.5] and [1, -0.5, -0.5, 0.5]) will result in a 360 deg
// rotation during the animation. Shuffle XYZ signs around to make this less likely to happen
for (var i = 1; i < rotations.Count; i++)
{
var r0 = rotations[i - 1];
var r1 = rotations[i];
var dot = r0.W * r1.W + r0.X * r1.X + r0.Y * r1.Y + r0.Z * r1.Z;
if (dot < 0.0)
{
rotations[i] = new Quaternion(-r1.X, -r1.Y, -r1.Z, r1.W);
}
}
var posTimes = Times;
var minPositions = positions;
RemoveTrivialFrames(ref posTimes, ref minPositions);
if (minPositions.Count == 1)
{
var posCurve = new D3Constant32f();
posCurve.CurveDataHeader_D3Constant32f = new CurveDataHeader {
Format = (int)CurveFormat.D3Constant32f, Degree = 2
};
posCurve.Controls = new float[3] {
positions[0].X, positions[0].Y, positions[0].Z
};
track.PositionCurve = new AnimationCurve {
CurveData = posCurve
};
}
else
{
var posCurve = new DaK32fC32f();
posCurve.CurveDataHeader_DaK32fC32f = new CurveDataHeader {
Format = (int)CurveFormat.DaK32fC32f, Degree = 2
};
posCurve.SetKnots(Times);
posCurve.SetPoints(positions);
track.PositionCurve = new AnimationCurve {
CurveData = posCurve
};
}
var rotTimes = Times;
var minRotations = rotations;
RemoveTrivialFrames(ref rotTimes, ref minRotations);
if (minRotations.Count == 1)
{
var rotCurve = new D4Constant32f();
rotCurve.CurveDataHeader_D4Constant32f = new CurveDataHeader {
Format = (int)CurveFormat.D4Constant32f, Degree = 2
};
rotCurve.Controls = new float[4] {
rotations[0].X, rotations[0].Y, rotations[0].Z, rotations[0].W
};
track.OrientationCurve = new AnimationCurve {
CurveData = rotCurve
};
}
else
{
var rotCurve = new DaK32fC32f();
rotCurve.CurveDataHeader_DaK32fC32f = new CurveDataHeader {
Format = (int)CurveFormat.DaK32fC32f, Degree = 2
};
rotCurve.SetKnots(Times);
rotCurve.SetQuaternions(rotations);
track.OrientationCurve = new AnimationCurve {
CurveData = rotCurve
};
}
var scaleTimes = Times;
var minScales = scales;
RemoveTrivialFrames(ref scaleTimes, ref minScales);
if (minScales.Count == 1)
{
var scaleCurve = new DaConstant32f();
scaleCurve.CurveDataHeader_DaConstant32f = new CurveDataHeader {
Format = (int)CurveFormat.DaConstant32f, Degree = 2
};
var m = minScales[0];
scaleCurve.Controls = new List <float>
{
m[0, 0], m[0, 1], m[0, 2],
m[1, 0], m[1, 1], m[1, 2],
m[2, 0], m[2, 1], m[2, 2]
};
track.ScaleShearCurve = new AnimationCurve {
CurveData = scaleCurve
};
}
else
{
var scaleCurve = new DaK32fC32f();
scaleCurve.CurveDataHeader_DaK32fC32f = new CurveDataHeader {
Format = (int)CurveFormat.DaK32fC32f, Degree = 2
};
scaleCurve.SetKnots(Times);
scaleCurve.SetMatrices(scales);
track.ScaleShearCurve = new AnimationCurve {
CurveData = scaleCurve
};
}
return(track);
}
