private Vector3 TransformationCompDefaultValue(TransformationComp comp)
{
// XXX a neat way to solve the never-ending special cases for scaling
// would be to do everything in log space!
return comp == TransformationComp.Scaling ? new Vector3(1.0f, 1.0f, 1.0f) : new Vector3();
}
private string NameTransformationChainNode(string name, TransformationComp comp)
{
return name + MAGIC_NODE_TAG + "_" + NameTransformationComp(comp);
}
private string NameTransformationCompProperty(TransformationComp comp)
{
switch (comp)
{
case TransformationComp.Translation:
return "Lcl Translation";
case TransformationComp.RotationOffset:
return "RotationOffset";
case TransformationComp.RotationPivot:
return "RotationPivot";
case TransformationComp.PreRotation:
return "PreRotation";
case TransformationComp.Rotation:
return "Lcl Rotation";
case TransformationComp.PostRotation:
return "PostRotation";
case TransformationComp.RotationPivotInverse:
return "RotationPivotInverse";
case TransformationComp.ScalingOffset:
return "ScalingOffset";
case TransformationComp.ScalingPivot:
return "ScalingPivot";
case TransformationComp.Scaling:
return "Lcl Scaling";
case TransformationComp.ScalingPivotInverse:
return "ScalingPivotInverse";
case TransformationComp.GeometricScaling:
return "GeometricScaling";
case TransformationComp.GeometricRotation:
return "GeometricRotation";
case TransformationComp.GeometricTranslation:
return "GeometricTranslation";
default:
break;
}
Debug.Assert(false);
return null;
}
private bool IsRedundantAnimationData(Model target, TransformationComp comp, List<AnimationCurveNode> curves)
{
Debug.Assert(curves.Count > 0);
// look for animation nodes with
// * sub channels for all relevant components set
// * one key/value pair per component
// * combined values match up the corresponding value in the bind pose node transformation
// only such nodes are 'redundant' for this function.
if (curves.Count > 1)
{
return false;
}
var nd = curves[0];
var subCurves = nd.Curves;
AnimationCurve dx;
AnimationCurve dy;
AnimationCurve dz;
subCurves.TryGetValue("d|X", out dx);
subCurves.TryGetValue("d|Y", out dy);
subCurves.TryGetValue("d|Z", out dz);
if (dx == null || dy == null || dz == null)
{
return false;
}
var vx = dx.Values;
var vy = dy.Values;
var vz = dz.Values;
if (vx.Count != 1 || vy.Count != 1 || vz.Count != 1)
{
return false;
}
var dynVal = new Vector3(vx[0], vy[0], vz[0]);
var staticVal = PropertyHelper.PropertyGet<Vector3>(target.Props,
NameTransformationCompProperty(comp),
TransformationCompDefaultValue(comp));
const float epsilon = 1e-6f;
return (dynVal - staticVal).LengthSquared() < epsilon;
}