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Implement Animation Compression

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Roughly based on https://github.com/godotengine/godot-proposals/issues/3375 (used format is slightly different).

* Implement bitwidth based animation compression (see animation.h for format).
* Can compress imported animations up to 10 times.
* Compression format opens the door to streaming.
* Works transparently (happens all inside animation.h)
This commit is contained in:
reduz
2021-10-20 20:42:22 -03:00
parent 9c9ec63e1d
commit a69541da4c
12 changed files with 1860 additions and 95 deletions
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27
core/math/vector3.h
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@ -32,9 +32,9 @@
#define VECTOR3_H
#include "core/math/math_funcs.h"
#include "core/math/vector2.h"
#include "core/math/vector3i.h"
#include "core/string/ustring.h"
class Basis;
struct Vector3 {
@ -103,6 +103,31 @@ struct 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 move_toward(const Vector3 &p_to, const real_t p_delta) const;
_FORCE_INLINE_ Vector2 octahedron_encode() const {
Vector3 n = *this;
n /= Math::abs(n.x) + Math::abs(n.y) + Math::abs(n.z);
Vector2 o;
if (n.z >= 0.0) {
o.x = n.x;
o.y = n.y;
} else {
o.x = (1.0 - Math::abs(n.y)) * (n.x >= 0.0 ? 1.0 : -1.0);
o.y = (1.0 - Math::abs(n.x)) * (n.y >= 0.0 ? 1.0 : -1.0);
}
o.x = o.x * 0.5 + 0.5;
o.y = o.y * 0.5 + 0.5;
return o;
}
static _FORCE_INLINE_ Vector3 octahedron_decode(const Vector2 &p_oct) {
Vector2 f(p_oct.x * 2.0 - 1.0, p_oct.y * 2.0 - 1.0);
Vector3 n(f.x, f.y, 1.0f - Math::abs(f.x) - Math::abs(f.y));
float t = CLAMP(-n.z, 0.0, 1.0);
n.x += n.x >= 0 ? -t : t;
n.y += n.y >= 0 ? -t : t;
return n.normalized();
}
_FORCE_INLINE_ Vector3 cross(const Vector3 &p_b) const;
_FORCE_INLINE_ real_t dot(const Vector3 &p_b) const;
Basis outer(const Vector3 &p_b) const;