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add smooth tangent on first and last keyframe

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This commit is contained in:
Ruan Lucas
2023-07-18 20:28:28 -04:00
parent 2be6a6be9e
commit 2fac4c9284
1 changed files with 15 additions and 14 deletions
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29
Source/Editor/CustomEditors/Dedicated/SplineEditor.cs
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@@ -19,7 +19,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
/// <summary>
/// Basis for creating tangent manipulation types for bezier curves.
/// </summary>
public abstract class TangentModeBase
private abstract class TangentModeBase
{
/// <summary>
/// Called when user set selected tangent mode.
@@ -60,7 +60,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
/// <summary>
/// Edit curve options manipulate the curve as free mode
/// </summary>
public sealed class FreeTangentMode : TangentModeBase
private sealed class FreeTangentMode : TangentModeBase
{
/// <inheritdoc/>
public override void OnMoveTangentIn(Spline spline, int index) { }
@@ -81,7 +81,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
/// <summary>
/// Edit curve options to set tangents to linear
/// </summary>
public sealed class LinearTangentMode : TangentModeBase
private sealed class LinearTangentMode : TangentModeBase
{
/// <inheritdoc/>
public override void OnMoveTangentIn(Spline spline, int index) { }
@@ -116,7 +116,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
/// <summary>
/// Edit curve options to align tangents of selected spline
/// </summary>
public sealed class AlignedTangentMode : TangentModeBase
private sealed class AlignedTangentMode : TangentModeBase
{
/// <inheritdoc/>
public override void OnSetMode(Spline spline, int index)
@@ -167,18 +167,19 @@ namespace FlaxEditor.CustomEditors.Dedicated
var isLastKeyframe = index >= spline.SplinePointsCount - 1;
var isFirstKeyframe = index <= 0;
if (!isLastKeyframe && !isFirstKeyframe)
{
var nextKeyframe = spline.GetSplineKeyframe(++index);
var previousKeyframe = spline.GetSplineKeyframe(--index);
// force smooth it's linear point
if (tangentInSize == 0f && !isFirstKeyframe) tangentInSize = 100;
if (tangentOutSize == 0f && !isLastKeyframe) tangentOutSize = 100;
// calc form from Spline.cpp -> SetTangentsSmooth
var slop = (keyframe.Value.Translation - previousKeyframe.Value.Translation + nextKeyframe.Value.Translation - keyframe.Value.Translation).Normalized;
var nextKeyframe = !isLastKeyframe ? spline.GetSplineKeyframe(index + 1) : keyframe;
var previousKeyframe = !isFirstKeyframe ? spline.GetSplineKeyframe(index - 1) : keyframe;
keyframe.TangentIn.Translation = -slop * tangentInSize;
keyframe.TangentOut.Translation = slop * tangentOutSize;
spline.SetSplineKeyframe(index, keyframe);
}
// calc form from Spline.cpp -> SetTangentsSmooth
var slop = (keyframe.Value.Translation - previousKeyframe.Value.Translation + nextKeyframe.Value.Translation - keyframe.Value.Translation).Normalized;
keyframe.TangentIn.Translation = -slop * tangentInSize;
keyframe.TangentOut.Translation = slop * tangentOutSize;
spline.SetSplineKeyframe(index, keyframe);
}
private void SetPointAligned(Spline spline, int index, bool isIn)