public override KeyFrame GetInterpolatedKeyFrame(float timeIndex, KeyFrame kf)
{
NumericKeyFrame kret = (NumericKeyFrame)kf;
// Keyframe pointers
KeyFrame kBase1, kBase2;
NumericKeyFrame k1, k2;
ushort firstKeyIndex;
float t = GetKeyFramesAtTime(timeIndex, out kBase1, out kBase2, out firstKeyIndex);
k1 = (NumericKeyFrame)kBase1;
k2 = (NumericKeyFrame)kBase2;
if (t == 0.0f)
{
// Just use k1
kret.NumericValue = k1.NumericValue;
}
else
{
// Interpolate by t
kret.NumericValue = AnimableValue.InterpolateValues(t, targetAnimable.Type,
k1.NumericValue, k2.NumericValue);
}
return(kf);
}
/// <summary> Applies an animation track to a given animable value. </summary>
/// <param name="anim">The AnimableValue to which to apply the animation </param>
/// <param name="time">The time position in the animation to apply. </param>
/// <param name="weight">The influence to give to this track, 1.0 for full influence, less to blend with
/// other animations. </param>
/// <param name="scale">The scale to apply to translations and scalings, useful for
/// adapting an animation to a different size target. </param>
private void ApplyToAnimable(AnimableValue anim, float time, float weight, float scale)
{
// Nothing to do if no keyframes
if (keyFrameList.Count == 0)
{
return;
}
var kf = new NumericKeyFrame(null, time);
GetInterpolatedKeyFrame(time, kf);
// add to existing. Weights are not relative, but treated as
// absolute multipliers for the animation
var v = weight * scale;
var val = AnimableValue.MultiplyFloat(anim.Type, v, kf.NumericValue);
anim.ApplyDeltaValue(val);
}
/// <summary> Applies an animation track to a given animable value. </summary>
/// <param name="anim">The AnimableValue to which to apply the animation </param>
/// <param name="time">The time position in the animation to apply. </param>
/// <param name="weight">The influence to give to this track, 1.0 for full influence, less to blend with
/// other animations. </param>
/// <param name="scale">The scale to apply to translations and scalings, useful for
/// adapting an animation to a different size target. </param>
void ApplyToAnimable( AnimableValue anim, float time, float weight, float scale )
{
// Nothing to do if no keyframes
if ( keyFrameList.Count == 0 )
return;
NumericKeyFrame kf = new NumericKeyFrame( null, time );
GetInterpolatedKeyFrame( time, kf );
// add to existing. Weights are not relative, but treated as
// absolute multipliers for the animation
float v = weight * scale;
Object val = AnimableValue.MultiplyFloat( anim.Type, v, kf.NumericValue );
anim.ApplyDeltaValue( val );
}