DashyFox/Tween
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fix easing

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DashyFox
2025-05-12 17:25:26 +03:00
parent 663b10f898
commit 9635922022
1 changed files with 65 additions and 74 deletions
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137
Easing.h
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@ -1,4 +1,6 @@
#pragma once
#include <cmath>
namespace EasingFunc {
typedef float(*eFunc)(float);
@ -7,15 +9,15 @@ namespace EasingFunc {
}
static float easeInSine(float t) {
return sin(1.5707963 * t);
return sinf((t * M_PI) / 2.0f);
}
static float easeOutSine(float t) {
return 1 + sin(1.5707963 * (--t));
return sinf((t * M_PI) / 2.0f);
}
static float easeInOutSine(float t) {
return 0.5 * (1 + sin(3.1415926 * (t - 0.5)));
return -(cosf(M_PI * t) - 1.0f) / 2.0f;
}
static float easeInQuad(float t) {
@ -23,11 +25,11 @@ namespace EasingFunc {
}
static float easeOutQuad(float t) {
return t * (2 - t);
return 1 - (1 - t) * (1 - t);
}
static float easeInOutQuad(float t) {
return t < 0.5 ? 2 * t * t : t * (4 - 2 * t) - 1;
return t < 0.5f ? 2 * t * t : 1 - powf(-2 * t + 2, 2) / 2;
}
static float easeInCubic(float t) {
@ -35,138 +37,127 @@ namespace EasingFunc {
}
static float easeOutCubic(float t) {
return 1 + (--t) * t * t;
return 1 - powf(1 - t, 3);
}
static float easeInOutCubic(float t) {
return t < 0.5 ? 4 * t * t * t : 1 + (--t) * (2 * (--t)) * (2 * t);
return t < 0.5f ? 4 * t * t * t : 1 - powf(-2 * t + 2, 3) / 2;
}
static float easeInQuart(float t) {
t *= t;
return t * t;
return t * t * t * t;
}
static float easeOutQuart(float t) {
t = (--t) * t;
return 1 - t * t;
return 1 - powf(1 - t, 4);
}
static float easeInOutQuart(float t) {
if (t < 0.5) {
t *= t;
return 8 * t * t;
} else {
t = (--t) * t;
return 1 - 8 * t * t;
}
return t < 0.5f ? 8 * powf(t, 4) : 1 - powf(-2 * t + 2, 4) / 2;
}
static float easeInQuint(float t) {
float t2 = t * t;
return t * t2 * t2;
return powf(t, 5);
}
static float easeOutQuint(float t) {
float t2 = (--t) * t;
return 1 + t * t2 * t2;
return 1 - powf(1 - t, 5);
}
static float easeInOutQuint(float t) {
float t2;
if (t < 0.5) {
t2 = t * t;
return 16 * t * t2 * t2;
} else {
t2 = (--t) * t;
return 1 + 16 * t * t2 * t2;
}
return t < 0.5f ? 16 * powf(t, 5) : 1 - powf(-2 * t + 2, 5) / 2;
}
static float easeInExpo(float t) {
return (pow(2, 8 * t) - 1) / 255;
return t == 0 ? 0 : powf(2, 10 * t - 10);
}
static float easeOutExpo(float t) {
return 1 - pow(2, -8 * t);
return t == 1 ? 1 : 1 - powf(2, -10 * t);
}
static float easeInOutExpo(float t) {
if (t < 0.5) {
return (pow(2, 16 * t) - 1) / 510;
} else {
return 1 - 0.5 * pow(2, -16 * (t - 0.5));
}
if (t == 0) return 0;
if (t == 1) return 1;
return t < 0.5f ? powf(2, 20 * t - 10) / 2 : (2 - powf(2, -20 * t + 10)) / 2;
}
static float easeInCirc(float t) {
return 1 - sqrt(1 - t);
return 1 - sqrtf(1 - t * t);
}
static float easeOutCirc(float t) {
return sqrt(t);
return sqrtf(1 - powf(t - 1, 2));
}
static float easeInOutCirc(float t) {
if (t < 0.5) {
return (1 - sqrt(1 - 2 * t)) * 0.5;
} else {
return (1 + sqrt(2 * t - 1)) * 0.5;
}
return t < 0.5f
? (1 - sqrtf(1 - 4 * t * t)) / 2
: (sqrtf(1 - powf(-2 * t + 2, 2)) + 1) / 2;
}
static float easeInBack(float t) {
return t * t * (2.70158 * t - 1.70158);
constexpr float c1 = 1.70158f;
constexpr float c3 = c1 + 1;
return c3 * t * t * t - c1 * t * t;
}
static float easeOutBack(float t) {
return 1 + (--t) * t * (2.70158 * t + 1.70158);
constexpr float c1 = 1.70158f;
constexpr float c3 = c1 + 1;
return 1 + c3 * powf(t - 1, 3) + c1 * powf(t - 1, 2);
}
static float easeInOutBack(float t) {
if (t < 0.5) {
return t * t * (7 * t - 2.5) * 2;
} else {
return 1 + (--t) * t * 2 * (7 * t + 2.5);
}
constexpr float c1 = 1.70158f;
constexpr float c2 = c1 * 1.525f;
return t < 0.5f
? powf(2 * t, 2) * ((c2 + 1) * 2 * t - c2) / 2
: (powf(2 * t - 2, 2) * ((c2 + 1) * (t * 2 - 2) + c2) + 2) / 2;
}
static float easeInElastic(float t) {
float t2 = t * t;
return t2 * t2 * sin(t * PI * 4.5);
constexpr float c4 = (2 * M_PI) / 3;
return t == 0 ? 0 : t == 1 ? 1 : -powf(2, 10 * t - 10) * sinf((t * 10 - 10.75f) * c4);
}
static float easeOutElastic(float t) {
float t2 = (t - 1) * (t - 1);
return 1 - t2 * t2 * cos(t * PI * 4.5);
constexpr float c4 = (2 * M_PI) / 3;
return t == 0 ? 0 : t == 1 ? 1 : powf(2, -10 * t) * sinf((t * 10 - 0.75f) * c4) + 1;
}
static float easeInOutElastic(float t) {
float t2;
if (t < 0.45) {
t2 = t * t;
return 8 * t2 * t2 * sin(t * PI * 9);
} else if (t < 0.55) {
return 0.5 + 0.75 * sin(t * PI * 4);
constexpr float c5 = (2 * M_PI) / 4.5f;
if (t == 0) return 0;
if (t == 1) return 1;
return t < 0.5f
? -(powf(2, 20 * t - 10) * sinf((20 * t - 11.125f) * c5)) / 2
: (powf(2, -20 * t + 10) * sinf((20 * t - 11.125f) * c5)) / 2 + 1;
}
static float easeOutBounce(float t) {
if (t < 1 / 2.75f) {
return 7.5625f * t * t;
} else if (t < 2 / 2.75f) {
t -= 1.5f / 2.75f;
return 7.5625f * t * t + 0.75f;
} else if (t < 2.5f / 2.75f) {
t -= 2.25f / 2.75f;
return 7.5625f * t * t + 0.9375f;
} else {
t2 = (t - 1) * (t - 1);
return 1 - 8 * t2 * t2 * sin(t * PI * 9);
t -= 2.625f / 2.75f;
return 7.5625f * t * t + 0.984375f;
}
}
static float easeInBounce(float t) {
return pow(2, 6 * (t - 1)) * abs(sin(t * PI * 3.5));
}
static float easeOutBounce(float t) {
return 1 - pow(2, -6 * t) * abs(cos(t * PI * 3.5));
return 1 - easeOutBounce(1 - t);
}
static float easeInOutBounce(float t) {
if (t < 0.5) {
return 8 * pow(2, 8 * (t - 1)) * abs(sin(t * PI * 7));
} else {
return 1 - 8 * pow(2, -8 * t) * abs(sin(t * PI * 7));
}
return t < 0.5f
? (1 - easeOutBounce(1 - 2 * t)) / 2
: (1 + easeOutBounce(2 * t - 1)) / 2;
}
}