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Add more utilities for Spline

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This commit is contained in:
Wojtek Figat
2021-01-27 15:28:26 +01:00
parent 560b6cf5da
commit f0c7fbb0cf
2 changed files with 86 additions and 4 deletions
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40
Source/Engine/Level/Actors/Spline.cpp
View File

@@ -106,16 +106,29 @@ Vector3 Spline::GetSplineLocalPoint(int32 index) const
Transform Spline::GetSplineTransform(int32 index) const
{
CHECK_RETURN(index >= 0 && index < GetSplinePointsCount(), Vector3::Zero)
CHECK_RETURN(index >= 0 && index < GetSplinePointsCount(), Transform::Identity)
return _transform.LocalToWorld(Curve[index].Value);
}
Transform Spline::GetSplineLocalTransform(int32 index) const
{
CHECK_RETURN(index >= 0 && index < GetSplinePointsCount(), Vector3::Zero)
CHECK_RETURN(index >= 0 && index < GetSplinePointsCount(), Transform::Identity)
return Curve[index].Value;
}
Transform Spline::GetSplineTangent(int32 index, bool isIn)
{
return _transform.LocalToWorld(GetSplineLocalTangent(index, isIn));
}
Transform Spline::GetSplineLocalTangent(int32 index, bool isIn)
{
CHECK_RETURN(index >= 0 && index < GetSplinePointsCount(), Transform::Identity)
const auto& k = Curve[index];
const auto& tangent = isIn ? k.TangentIn : k.TangentOut;
return tangent + k.Value;
}
int32 Spline::GetSplinePointsCount() const
{
return Curve.GetKeyframes().Count();
@@ -263,6 +276,29 @@ void Spline::SetSplineLocalTransform(int32 index, const Transform& point, bool u
UpdateSpline();
}
void Spline::SetSplineTangent(int32 index, const Transform& point, bool isIn, bool updateSpline)
{
SetSplineLocalTangent(index, _transform.WorldToLocal(point), isIn, updateSpline);
}
void Spline::SetSplineLocalTangent(int32 index, const Transform& point, bool isIn, bool updateSpline)
{
CHECK(index >= 0 && index < GetSplinePointsCount());
auto& k = Curve[index];
auto& tangent = isIn ? k.TangentIn : k.TangentOut;
tangent = point - k.Value;
if (updateSpline)
UpdateSpline();
}
void Spline::SetSplinePointTime(int32 index, float time, bool updateSpline)
{
CHECK(index >= 0 && index < GetSplinePointsCount());
Curve[index].Time = time;
if (updateSpline)
UpdateSpline();
}
void Spline::AddSplinePoint(const Vector3& point, bool updateSpline)
{
const Keyframe k(Curve.IsEmpty() ? 0.0f : Curve.GetKeyframes().Last().Time + 1.0f, Transform(_transform.WorldToLocal(point)));

50
Source/Engine/Level/Actors/Spline.h
View File

@@ -138,6 +138,24 @@ public:
/// <returns>The curve point transformation (local-space).</returns>
API_FUNCTION() Transform GetSplineLocalTransform(int32 index) const;
/// <summary>
/// Gets the spline curve point tangent at the given index (world-space).
/// </summary>
/// <remarks>Tangents are stored relative to the curve point but this methods converts them to be in world-space.</remarks>
/// <param name="index">The curve keyframe index. Zero-based, smaller than GetSplinePointsCount().</param>
/// <param name="isIn">True if get arrive tangent, otherwise gets leave tangent (in or out).</param>
/// <returns>The transformation of the tangent to set (world-space).</returns>
API_FUNCTION() Transform GetSplineTangent(int32 index, bool isIn);
/// <summary>
/// Gets the spline curve point tangent at the given index (local-space).
/// </summary>
/// <remarks>Tangents are stored relative to the curve point but this methods converts them to be in local-space of the actor.</remarks>
/// <param name="index">The curve keyframe index. Zero-based, smaller than GetSplinePointsCount().</param>
/// <param name="isIn">True if get arrive tangent, otherwise gets leave tangent (in or out).</param>
/// <returns>The transformation of the tangent to set (world-space).</returns>
API_FUNCTION() Transform GetSplineLocalTangent(int32 index, bool isIn);
/// <summary>
/// Gets the amount of points in the spline.
/// </summary>
@@ -218,7 +236,7 @@ public:
/// Sets the spline curve at the given index (world-space).
/// </summary>
/// <param name="index">The curve keyframe index. Zero-based, smaller than GetSplinePointsCount().</param>
/// <param name="point">The location of the point to set (world-space).</param>
/// <param name="point">The transformation of the point to set (world-space).</param>
/// <param name="updateSpline">True if update spline after adding the point, otherwise false.</param>
API_FUNCTION() void SetSplineTransform(int32 index, const Transform& point, bool updateSpline = true);
@@ -226,10 +244,38 @@ public:
/// Sets the spline curve at the given index (local-space).
/// </summary>
/// <param name="index">The curve keyframe index. Zero-based, smaller than GetSplinePointsCount().</param>
/// <param name="point">The location of the point to set (local-space).</param>
/// <param name="point">The transformation of the point to set (local-space).</param>
/// <param name="updateSpline">True if update spline after adding the point, otherwise false.</param>
API_FUNCTION() void SetSplineLocalTransform(int32 index, const Transform& point, bool updateSpline = true);
/// <summary>
/// Sets the spline curve point tangent at the given index (world-space).
/// </summary>
/// <remarks>Tangents are stored relative to the curve point but this methods converts them to be in world-space.</remarks>
/// <param name="index">The curve keyframe index. Zero-based, smaller than GetSplinePointsCount().</param>
/// <param name="point">The transformation of the tangent to set (world-space).</param>
/// <param name="isIn">True if set arrive tangent, otherwise sets leave tangent (in or out).</param>
/// <param name="updateSpline">True if update spline after adding the point, otherwise false.</param>
API_FUNCTION() void SetSplineTangent(int32 index, const Transform& point, bool isIn, bool updateSpline = true);
/// <summary>
/// Sets the spline curve point tangent at the given index (local-space).
/// </summary>
/// <remarks>Tangents are stored relative to the curve point but this methods converts them to be in local-space of the actor.</remarks>
/// <param name="index">The curve keyframe index. Zero-based, smaller than GetSplinePointsCount().</param>
/// <param name="point">The transformation of the tangent to set (local-space).</param>
/// <param name="isIn">True if set arrive tangent, otherwise sets leave tangent (in or out).</param>
/// <param name="updateSpline">True if update spline after adding the point, otherwise false.</param>
API_FUNCTION() void SetSplineLocalTangent(int32 index, const Transform& point, bool isIn, bool updateSpline = true);
/// <summary>
/// Sets the spline curve point time at the given index (world-space).
/// </summary>
/// <param name="index">The curve keyframe index. Zero-based, smaller than GetSplinePointsCount().</param>
/// <param name="time">The time to set.</param>
/// <param name="updateSpline">True if update spline after adding the point, otherwise false.</param>
API_FUNCTION() void SetSplinePointTime(int32 index, float time, bool updateSpline = true);
/// <summary>
/// Adds the point to the spline curve (at the end).
/// </summary>