| Fridureiks | 07/04/2007 18:47 |
Re: Algoritmo para Effects
Hola,
Mootools (y alguna libreria mas supongo) utiliza las funciones que Robert Penner hizo para Actionscript (Easing Equations). En su web creo que te las podes bajar, seguramente en "formato AS" pero no tendras problemas para entenderlas si lo que deseas es usarlas en otro lenguaje. Del mismo modo, las podes encontrar en la libreria Mootools (la version sin comprimir) en "formato JS".
Estas son las que estan en Mootools: Código:
/* Property: linear */
linear: function(t, b, c, d){
return c*t/d + b;
},
/* Property: quadIn */
quadIn: function(t, b, c, d){
return c*(t/=d)*t + b;
},
/* Property: quadOut */
quadOut: function(t, b, c, d){
return -c *(t/=d)*(t-2) + b;
},
/* Property: quadInOut */
quadInOut: function(t, b, c, d){
if ((t/=d/2) < 1) return c/2*t*t + b;
return -c/2 * ((--t)*(t-2) - 1) + b;
},
/* Property: cubicIn */
cubicIn: function(t, b, c, d){
return c*(t/=d)*t*t + b;
},
/* Property: cubicOut */
cubicOut: function(t, b, c, d){
return c*((t=t/d-1)*t*t + 1) + b;
},
/* Property: cubicInOut */
cubicInOut: function(t, b, c, d){
if ((t/=d/2) < 1) return c/2*t*t*t + b;
return c/2*((t-=2)*t*t + 2) + b;
},
/* Property: quartIn */
quartIn: function(t, b, c, d){
return c*(t/=d)*t*t*t + b;
},
/* Property: quartOut */
quartOut: function(t, b, c, d){
return -c * ((t=t/d-1)*t*t*t - 1) + b;
},
/* Property: quartInOut */
quartInOut: function(t, b, c, d){
if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
return -c/2 * ((t-=2)*t*t*t - 2) + b;
},
/* Property: quintIn */
quintIn: function(t, b, c, d){
return c*(t/=d)*t*t*t*t + b;
},
/* Property: quintOut */
quintOut: function(t, b, c, d){
return c*((t=t/d-1)*t*t*t*t + 1) + b;
},
/* Property: quintInOut */
quintInOut: function(t, b, c, d){
if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
return c/2*((t-=2)*t*t*t*t + 2) + b;
},
/* Property: sineIn */
sineIn: function(t, b, c, d){
return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
},
/* Property: sineOut */
sineOut: function(t, b, c, d){
return c * Math.sin(t/d * (Math.PI/2)) + b;
},
/* Property: sineInOut */
sineInOut: function(t, b, c, d){
return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
},
/* Property: expoIn */
expoIn: function(t, b, c, d){
return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
},
/* Property: expoOut */
expoOut: function(t, b, c, d){
return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
},
/* Property: expoInOut */
expoInOut: function(t, b, c, d){
if (t==0) return b;
if (t==d) return b+c;
if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
},
/* Property: circIn */
circIn: function(t, b, c, d){
return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
},
/* Property: circOut */
circOut: function(t, b, c, d){
return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
},
/* Property: circInOut */
circInOut: function(t, b, c, d){
if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
},
/* Property: elasticIn */
elasticIn: function(t, b, c, d, a, p){
if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3; if (!a) a = 1;
if (a < Math.abs(c)){ a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin(c/a);
return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
},
/* Property: elasticOut */
elasticOut: function(t, b, c, d, a, p){
if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3; if (!a) a = 1;
if (a < Math.abs(c)){ a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin(c/a);
return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
},
/* Property: elasticInOut */
elasticInOut: function(t, b, c, d, a, p){
if (t==0) return b; if ((t/=d/2)==2) return b+c; if (!p) p=d*(.3*1.5); if (!a) a = 1;
if (a < Math.abs(c)){ a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin(c/a);
if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
},
/* Property: backIn */
backIn: function(t, b, c, d, s){
if (!s) s = 1.70158;
return c*(t/=d)*t*((s+1)*t - s) + b;
},
/* Property: backOut */
backOut: function(t, b, c, d, s){
if (!s) s = 1.70158;
return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
},
/* Property: backInOut */
backInOut: function(t, b, c, d, s){
if (!s) s = 1.70158;
if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
},
/* Property: bounceIn */
bounceIn: function(t, b, c, d){
return c - Fx.Transitions.bounceOut (d-t, 0, c, d) + b;
},
/* Property: bounceOut */
bounceOut: function(t, b, c, d){
if ((t/=d) < (1/2.75)){
return c*(7.5625*t*t) + b;
} else if (t < (2/2.75)){
return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
} else if (t < (2.5/2.75)){
return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
} else {
return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
}
},
/* Property: bounceInOut */
bounceInOut: function(t, b, c, d){
if (t < d/2) return Fx.Transitions.bounceIn(t*2, 0, c, d) * .5 + b;
return Fx.Transitions.bounceOut(t*2-d, 0, c, d) * .5 + c*.5 + b;
}
Saludos. |
