private Keyframe GetLastKeyframe(long tick)
=> tick > StartTick && Keyframes.Any(x => x.Tick < tick)
? Keyframes
.Where(x => x.Tick < tick)
.OrderBy(x => Math.Abs(x.Tick - tick))
.FirstOrDefault()
: Keyframe.GetDefault(StartTick);
void ChangeKeyframeText(SvgWidget widget, object newValue, object delta)
{
var cmds = new CompoundCommand();
foreach (var kf in Keyframes.Where(x => x.Model.Selected.Value))
{
cmds.Append(Command.Set(kf.Model.Text, (string)newValue));
}
History.Insert(cmds);
}
public override void Nudge(ref CompoundCommand cmds, NudgeDirection direction, float timeDelta, float valueDelta)
{
base.Nudge(ref cmds, direction, timeDelta, valueDelta);
foreach (var kf in Keyframes.Where(x => x.Model.Selected.Value))
{
switch (direction)
{
case NudgeDirection.Up:
var newValue = (float)VMath.Clamp(kf.Model.Value.Value + valueDelta, Model.Minimum.Value, Model.Maximum.Value);
cmds.Append(Command.Set(kf.Model.Value, newValue));
break;
case NudgeDirection.Down:
newValue = (float)VMath.Clamp(kf.Model.Value.Value - valueDelta, Model.Minimum.Value, Model.Maximum.Value);
cmds.Append(Command.Set(kf.Model.Value, newValue));
break;
}
}
}
public Matrix GetAbsoluteTransformAtTime(float time)
{
Matrix parentTransform = Matrix.Identity;
if (Parent != null)
{
parentTransform = Parent.GetAbsoluteTransformAtTime(time);
}
Matrix transform = Transform;
if (Keyframes.Any())
{
var framesBefore = Keyframes.Where(x => x.Time < time);
var framesAfter = Keyframes.Where(x => x.Time > time);
var frame1 = framesBefore.Any() ? framesBefore.Last() : Keyframes.First();
var frame2 = framesAfter.Any() ? framesAfter.First() : Keyframes.Last();
transform = Matrix.Lerp(frame1.Transform, frame2.Transform, Math.Min((time - frame1.Time) / (float)(frame2.Time - frame1.Time), 1f)) * Transform;
}
return(transform * parentTransform);
}
private Keyframe GetNextKeyframe(long tick) => Keyframes? .Where(x => x.Tick >= tick) .OrderBy(x => Math.Abs(x.Tick - tick)) .FirstOrDefault() ?? Keyframe.GetDefault(tick);