diff options
Diffstat (limited to 'core/math/vector3.h')
| -rw-r--r-- | core/math/vector3.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/core/math/vector3.h b/core/math/vector3.h index 8891532f42..970416234d 100644 --- a/core/math/vector3.h +++ b/core/math/vector3.h @@ -104,7 +104,9 @@ struct _NO_DISCARD_ Vector3 { _FORCE_INLINE_ Vector3 lerp(const Vector3 &p_to, const real_t p_weight) const; _FORCE_INLINE_ Vector3 slerp(const Vector3 &p_to, const real_t p_weight) const; - Vector3 cubic_interpolate(const Vector3 &p_b, const Vector3 &p_pre_a, const Vector3 &p_post_b, const real_t p_weight) const; + _FORCE_INLINE_ Vector3 cubic_interpolate(const Vector3 &p_b, const Vector3 &p_pre_a, const Vector3 &p_post_b, const real_t p_weight) const; + _FORCE_INLINE_ Vector3 bezier_interpolate(const Vector3 &p_control_1, const Vector3 &p_control_2, const Vector3 &p_end, const real_t p_t) const; + Vector3 move_toward(const Vector3 &p_to, const real_t p_delta) const; Vector2 octahedron_encode() const; @@ -227,6 +229,27 @@ Vector3 Vector3::slerp(const Vector3 &p_to, const real_t p_weight) const { return rotated(cross(p_to).normalized(), angle * p_weight) * (result_length / start_length); } +Vector3 Vector3::cubic_interpolate(const Vector3 &p_b, const Vector3 &p_pre_a, const Vector3 &p_post_b, const real_t p_weight) const { + Vector3 res = *this; + res.x = Math::cubic_interpolate(res.x, p_b.x, p_pre_a.x, p_post_b.x, p_weight); + res.y = Math::cubic_interpolate(res.y, p_b.y, p_pre_a.y, p_post_b.y, p_weight); + res.z = Math::cubic_interpolate(res.z, p_b.z, p_pre_a.z, p_post_b.z, p_weight); + return res; +} + +Vector3 Vector3::bezier_interpolate(const Vector3 &p_control_1, const Vector3 &p_control_2, const Vector3 &p_end, const real_t p_t) const { + Vector3 res = *this; + + /* Formula from Wikipedia article on Bezier curves. */ + real_t omt = (1.0 - p_t); + real_t omt2 = omt * omt; + real_t omt3 = omt2 * omt; + real_t t2 = p_t * p_t; + real_t t3 = t2 * p_t; + + return res * omt3 + p_control_1 * omt2 * p_t * 3.0 + p_control_2 * omt * t2 * 3.0 + p_end * t3; +} + real_t Vector3::distance_to(const Vector3 &p_to) const { return (p_to - *this).length(); } |