Files
2026-07-13 13:13:17 +08:00

115 lines
3.6 KiB
C#

using T3.Core.Animation;
using T3.Core.Utils;
using static T3.Core.Utils.EasingFunctions;
namespace Lib.numbers.@vec3.process;
[Guid("0ecb95ca-7db2-4a11-a6e5-214ae91ec268")]
internal sealed class EaseVec3Keys : Instance<EaseVec3Keys>
{
[Output(Guid = "b022aed3-1667-474f-b24e-107b3257e13c", DirtyFlagTrigger = DirtyFlagTrigger.Animated)]
public readonly Slot<Vector3> Result = new();
public EaseVec3Keys()
{
Result.UpdateAction = Update;
}
private void Update(EvaluationContext context)
{
var inputValue = Value.GetValue(context);
if (!TryFindCurves(out var curves))
{
Result.Value = inputValue;
return;
}
var easeMode = Interpolation.GetEnumValue<Interpolations>(context); // Easing function selector
var easeDirection = Direction.GetEnumValue<EaseDirection>(context);
var currentTime = context.LocalTime;
for (var i = 0; i < curves.Length; i++)
{
var curve = curves[i];
_keyframes = curve.GetVDefinitions().ToList();
float duration;
if (
TryFindClosestKeys(currentTime, curve, out var nearestKeys)
&& nearestKeys.Item1.OutInterpolation != VDefinition.KeyInterpolation.Constant
)
{
var (previousKey, nextKey) = nearestKeys;
_startTime[i] = (float)previousKey.U;
_initialValue[i] = (float)previousKey.Value;
_targetValue[i] = (float)nextKey.Value;
duration = Math.Max((float)(nextKey.U - previousKey.U), 0.0001f);
}
else
{
Result.Value[i] = inputValue[i];
continue;
}
// Calculate progress based on elapsed time and duration
var elapsedTime = (float)currentTime - _startTime[i];
var progress = (elapsedTime / duration).Clamp(0f, 1f);
var easedProgress = ApplyEasing(progress, easeDirection, easeMode);
Result.Value[i] = MathUtils.Lerp(_initialValue[i], _targetValue[i], easedProgress);
}
}
private bool TryFindCurves(out Curve[] curves)
{
curves = null;
var animator = Parent.Symbol.Animator;
_keyframes.Clear();
if (!animator.IsAnimated(SymbolChildId, Value.Id))
return false;
if (!animator.TryGetCurvesForInputSlot(Value, out var _curves))
return false;
if (_curves.Length == 0)
return false;
curves = _curves;
return true;
}
private static bool TryFindClosestKeys(double time, Curve curve, out Tuple<VDefinition, VDefinition> closestKeys)
{
closestKeys = null;
curve.TryGetPreviousKey(time, out var previousKey);
curve.TryGetNextKey(time, out var nextKey);
if (previousKey == null || nextKey == null)
{
return false;
}
closestKeys = new(previousKey, nextKey);
return true;
}
private List<VDefinition> _keyframes = [];
// Ease.cs
private Vector3 _startTime = Vector3.Zero;
private Vector3 _initialValue = Vector3.Zero;
private Vector3 _targetValue = Vector3.Zero;
[Input(Guid = "48d7bfd8-54c3-4c1b-bee4-92aaa735cc85")]
public readonly InputSlot<Vector3> Value = new();
[Input(Guid = "fa9c6388-a7eb-4424-956b-dc1b7f2486bc", MappedType = typeof(EaseDirection))]
public readonly InputSlot<int> Direction = new();
[Input(Guid = "4b8c9c9b-37fa-4c50-ac65-4c5a20e56d2f", MappedType = typeof(Interpolations))]
public readonly InputSlot<int> Interpolation = new();
}