From 8a6fc54ccdba233b2951b8933798c03915739afd Mon Sep 17 00:00:00 2001 From: Jihyun Yu Date: Sat, 21 Aug 2021 16:57:59 +0900 Subject: Curve2D/Curve3D: exact linear interpolation While calculating interpolated points, intervals between two baked points has been assummed to be `baked_interval`. The assumption could cause significant error in some extreme cases (for example #7088). To improve accuracy, `baked_dist_cache` is introduced, which stores distance from starting point for each baked points. `interpolate_baked` now returns exact linear-interpolated position along baked points. --- scene/resources/curve.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'scene/resources/curve.h') diff --git a/scene/resources/curve.h b/scene/resources/curve.h index c25d307608..5808fd6508 100644 --- a/scene/resources/curve.h +++ b/scene/resources/curve.h @@ -161,6 +161,7 @@ class Curve2D : public Resource { mutable bool baked_cache_dirty = false; mutable PackedVector2Array baked_point_cache; + mutable PackedFloat32Array baked_dist_cache; mutable float baked_max_ofs = 0.0; void _bake() const; @@ -224,6 +225,7 @@ class Curve3D : public Resource { mutable PackedVector3Array baked_point_cache; mutable Vector baked_tilt_cache; mutable PackedVector3Array baked_up_vector_cache; + mutable PackedFloat32Array baked_dist_cache; mutable float baked_max_ofs = 0.0; void _bake() const; -- cgit v1.2.3