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Use tgmath.h and float constants in easings.h

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flashback-fx 2019-05-24 19:07:59 +00:00
parent 2eb280e836
commit d4487bcfa7
1 changed files with 90 additions and 90 deletions
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94
src/easings.h
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@ -90,7 +90,7 @@
#define EASEDEF extern
#endif
#include <math.h> // Required for: sin(), cos(), sqrt(), pow()
#include <tgmath.h> // Required for: sin(), cos(), sqrt(), pow()
#ifndef PI
#define PI 3.14159265358979323846f //Required as PI is not always defined in math.h
@ -107,47 +107,47 @@ EASEDEF float EaseLinearOut(float t, float b, float c, float d) { return (c*t/d
EASEDEF float EaseLinearInOut(float t,float b, float c, float d) { return (c*t/d + b); }
// Sine Easing functions
EASEDEF float EaseSineIn(float t, float b, float c, float d) { return (-c*cos(t/d*(PI/2)) + c + b); }
EASEDEF float EaseSineOut(float t, float b, float c, float d) { return (c*sin(t/d*(PI/2)) + b); }
EASEDEF float EaseSineInOut(float t, float b, float c, float d) { return (-c/2*(cos(PI*t/d) - 1) + b); }
EASEDEF float EaseSineIn(float t, float b, float c, float d) { return (-c*cos(t/d*(PI/2.0f)) + c + b); }
EASEDEF float EaseSineOut(float t, float b, float c, float d) { return (c*sin(t/d*(PI/2.0f)) + b); }
EASEDEF float EaseSineInOut(float t, float b, float c, float d) { return (-c/2.0f*(cos(PI*t/d) - 1.0f) + b); }
// Circular Easing functions
EASEDEF float EaseCircIn(float t, float b, float c, float d) { t /= d; return (-c*(sqrt(1 - t*t) - 1) + b); }
EASEDEF float EaseCircOut(float t, float b, float c, float d) { t = t/d - 1; return (c*sqrt(1 - t*t) + b); }
EASEDEF float EaseCircIn(float t, float b, float c, float d) { t /= d; return (-c*(sqrt(1.0f - t*t) - 1.0f) + b); }
EASEDEF float EaseCircOut(float t, float b, float c, float d) { t = t/d - 1.0f; return (c*sqrt(1.0f - t*t) + b); }
EASEDEF float EaseCircInOut(float t, float b, float c, float d)
{
if ((t/=d/2) < 1) return (-c/2*(sqrt(1 - t*t) - 1) + b);
t -= 2; return (c/2*(sqrt(1 - t*t) + 1) + b);
if ((t/=d/2.0f) < 1.0f) return (-c/2.0f*(sqrt(1.0f - t*t) - 1.0f) + b);
t -= 2.0f; return (c/2.0f*(sqrt(1.0f - t*t) + 1.0f) + b);
}
// Cubic Easing functions
EASEDEF float EaseCubicIn(float t, float b, float c, float d) { t /= d; return (c*t*t*t + b); }
EASEDEF float EaseCubicOut(float t, float b, float c, float d) { t = t/d-1; return (c*(t*t*t + 1) + b); }
EASEDEF float EaseCubicOut(float t, float b, float c, float d) { t = t/d - 1.0f; return (c*(t*t*t + 1.0f) + b); }
EASEDEF float EaseCubicInOut(float t, float b, float c, float d)
{
if ((t/=d/2) < 1) return (c/2*t*t*t + b);
t -= 2; return (c/2*(t*t*t + 2) + b);
if ((t/=d/2.0f) < 1.0f) return (c/2.0f*t*t*t + b);
t -= 2.0f; return (c/2.0f*(t*t*t + 2.0f) + b);
}
// Quadratic Easing functions
EASEDEF float EaseQuadIn(float t, float b, float c, float d) { t /= d; return (c*t*t + b); }
EASEDEF float EaseQuadOut(float t, float b, float c, float d) { t /= d; return (-c*t*(t - 2) + b); }
EASEDEF float EaseQuadOut(float t, float b, float c, float d) { t /= d; return (-c*t*(t - 2.0f) + b); }
EASEDEF float EaseQuadInOut(float t, float b, float c, float d)
{
if ((t/=d/2) < 1) return (((c/2)*(t*t)) + b);
t--; return (-c/2*(((t - 2)*t) - 1) + b);
return (-c/2.0f*(((t - 1.0f)*(t - 3.0f)) - 1.0f) + b);
}
// Exponential Easing functions
EASEDEF float EaseExpoIn(float t, float b, float c, float d) { return (t == 0) ? b : (c*pow(2, 10*(t/d - 1)) + b); }
EASEDEF float EaseExpoOut(float t, float b, float c, float d) { return (t == d) ? (b + c) : (c*(-pow(2, -10*t/d) + 1) + b); }
EASEDEF float EaseExpoIn(float t, float b, float c, float d) { return (t == 0.0f) ? b : (c*pow(2.0f, 10.0f*(t/d - 1.0f)) + b); }
EASEDEF float EaseExpoOut(float t, float b, float c, float d) { return (t == d) ? (b + c) : (c*(-pow(2.0f, -10.0f*t/d) + 1.0f) + b); }
EASEDEF float EaseExpoInOut(float t, float b, float c, float d)
{
if (t == 0) return b;
if (t == 0.0f) return b;
if (t == d) return (b + c);
if ((t/=d/2) < 1) return (c/2*pow(2, 10*(t - 1)) + b);
if ((t/=d/2.0f) < 1.0f) return (c/2.0f*pow(2.0f, 10.0f*(t - 1.0f)) + b);
return (c/2*(-pow(2, -10*--t) + 2) + b);
return (c/2.0f*(-pow(2.0f, -10.0f*(t - 1.0f)) + 2.0f) + b);
}
// Back Easing functions
@ -155,38 +155,38 @@ EASEDEF float EaseBackIn(float t, float b, float c, float d)
{
float s = 1.70158f;
float postFix = t/=d;
return (c*(postFix)*t*((s + 1)*t - s) + b);
return (c*(postFix)*t*((s + 1.0f)*t - s) + b);
}
EASEDEF float EaseBackOut(float t, float b, float c, float d)
{
float s = 1.70158f;
t = t/d - 1;
return (c*(t*t*((s + 1)*t + s) + 1) + b);
t = t/d - 1.0f;
return (c*(t*t*((s + 1.0f)*t + s) + 1.0f) + b);
}
EASEDEF float EaseBackInOut(float t, float b, float c, float d)
{
float s = 1.70158f;
if ((t/=d/2) < 1)
if ((t/=d/2.0f) < 1.0f)
{
s *= 1.525f;
return (c/2*(t*t*((s + 1)*t - s)) + b);
return (c/2.0f*(t*t*((s + 1.0f)*t - s)) + b);
}
float postFix = t-=2;
float postFix = t-=2.0f;
s *= 1.525f;
return (c/2*((postFix)*t*((s + 1)*t + s) + 2) + b);
return (c/2.0f*((postFix)*t*((s + 1.0f)*t + s) + 2.0f) + b);
}
// Bounce Easing functions
EASEDEF float EaseBounceOut(float t, float b, float c, float d)
{
if ((t/=d) < (1/2.75f))
if ((t/=d) < (1.0f/2.75f))
{
return (c*(7.5625f*t*t) + b);
}
else if (t < (2/2.75f))
else if (t < (2.0f/2.75f))
{
float postFix = t-=(1.5f/2.75f);
return (c*(7.5625f*(postFix)*t + 0.75f) + b);
@ -203,57 +203,57 @@ EASEDEF float EaseBounceOut(float t, float b, float c, float d)
}
}
EASEDEF float EaseBounceIn(float t, float b, float c, float d) { return (c - EaseBounceOut(d-t, 0, c, d) + b); }
EASEDEF float EaseBounceIn(float t, float b, float c, float d) { return (c - EaseBounceOut(d - t, 0.0f, c, d) + b); }
EASEDEF float EaseBounceInOut(float t, float b, float c, float d)
{
if (t < d/2) return (EaseBounceIn(t*2, 0, c, d)*0.5f + b);
else return (EaseBounceOut(t*2-d, 0, c, d)*0.5f + c*0.5f + b);
if (t < d/2.0f) return (EaseBounceIn(t*2.0f, 0.0f, c, d)*0.5f + b);
else return (EaseBounceOut(t*2.0f - d, 0.0f, c, d)*0.5f + c*0.5f + b);
}
// Elastic Easing functions
EASEDEF float EaseElasticIn(float t, float b, float c, float d)
{
if (t == 0) return b;
if ((t/=d) == 1) return (b + c);
if (t == 0.0f) return b;
if ((t/=d) == 1.0f) return (b + c);
float p = d*0.3f;
float a = c;
float s = p/4;
float postFix = a*pow(2, 10*(t-=1));
float s = p/4.0f;
float postFix = a*pow(2.0f, 10.0f*(t-=1.0f));
return (-(postFix*sin((t*d-s)*(2*PI)/p )) + b);
return (-(postFix*sin((t*d-s)*(2.0f*PI)/p )) + b);
}
EASEDEF float EaseElasticOut(float t, float b, float c, float d)
{
if (t == 0) return b;
if ((t/=d) == 1) return (b + c);
if (t == 0.0f) return b;
if ((t/=d) == 1.0f) return (b + c);
float p = d*0.3f;
float a = c;
float s = p/4;
float s = p/4.0f;
return (a*pow(2,-10*t)*sin((t*d-s)*(2*PI)/p) + c + b);
return (a*pow(2.0f,-10.0f*t)*sin((t*d-s)*(2.0f*PI)/p) + c + b);
}
EASEDEF float EaseElasticInOut(float t, float b, float c, float d)
{
if (t == 0) return b;
if ((t/=d/2) == 2) return (b + c);
if (t == 0.0f) return b;
if ((t/=d/2.0f) == 2.0f) return (b + c);
float p = d*(0.3f*1.5f);
float a = c;
float s = p/4;
float s = p/4.0f;
if (t < 1)
if (t < 1.0f)
{
float postFix = a*pow(2, 10*(t-=1));
return -0.5f*(postFix*sin((t*d-s)*(2*PI)/p)) + b;
float postFix = a*pow(2.0f, 10.0f*(t-=1.0f));
return -0.5f*(postFix*sin((t*d-s)*(2.0f*PI)/p)) + b;
}
float postFix = a*pow(2, -10*(t-=1));
float postFix = a*pow(2.0f, -10.0f*(t-=1.0f));
return (postFix*sin((t*d-s)*(2*PI)/p)*0.5f + c + b);
return (postFix*sin((t*d-s)*(2.0f*PI)/p)*0.5f + c + b);
}
#ifdef __cplusplus