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Refactor Curv3D and PathFollow3D

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This commit makes the following major changes

1. Add "sample_baked_with_rotation()" to Curve3D, making it usable independently. A similar change was made to Curve2D previously.
2. Refactor the _bake() method on Curve3D, using Parallel Transport Frame instead of Frenet Frame.
3. Refactor the sample_* methods, including:
  i. Factor out common binary search code, following the DRY principe
  ii. sample_up_vector() interpolated up vector as part of rotation frame(posture) for consistancy and accuracy.
This commit is contained in:
Yaohua Xiong
2022-08-07 18:29:12 +08:00
parent 6521eccaae
commit 5241464a46
6 changed files with 363 additions and 277 deletions
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scene/resources/curve.h
+11 -6
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@@ -238,11 +238,6 @@ class Curve3D : public Resource {
Vector<Point> points;
struct BakedPoint {
real_t ofs = 0.0;
Vector3 point;
};
mutable bool baked_cache_dirty = false;
mutable PackedVector3Array baked_point_cache;
mutable Vector<real_t> baked_tilt_cache;
@@ -254,6 +249,15 @@ class Curve3D : public Resource {
void _bake() const;
struct Interval {
int idx;
real_t frac;
};
Interval _find_interval(real_t p_offset) const;
Vector3 _sample_baked(Interval p_interval, bool p_cubic) const;
real_t _sample_baked_tilt(Interval p_interval) const;
Basis _sample_posture(Interval p_interval, bool p_apply_tilt = false) const;
real_t bake_interval = 0.2;
bool up_vector_enabled = true;
@@ -296,9 +300,10 @@ public:
real_t get_baked_length() const;
Vector3 sample_baked(real_t p_offset, bool p_cubic = false) const;
Transform3D sample_baked_with_rotation(real_t p_offset, bool p_cubic = false, bool p_apply_tilt = false) const;
real_t sample_baked_tilt(real_t p_offset) const;
Vector3 sample_baked_up_vector(real_t p_offset, bool p_apply_tilt = false) const;
PackedVector3Array get_baked_points() const; //useful for going through
PackedVector3Array get_baked_points() const; // Useful for going through.
Vector<real_t> get_baked_tilts() const; //useful for going through
PackedVector3Array get_baked_up_vectors() const;
Vector3 get_closest_point(const Vector3 &p_to_point) const;