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Antiguo 29/07/2008, 08:01
Avatar de MaBoRaK
MaBoRaK
 
Fecha de Ingreso: abril-2003
Ubicación: La Paz - Bolivia
Mensajes: 2.003
Antigüedad: 21 años, 6 meses
Puntos: 35
Respuesta: Velocidad Opacity en imagen

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No es asi de simple amigo. Debes usar ecuaciones de tiempo y valor.

http://www.robertpenner.com/easing/

Mira, te paso lo que yo hago. para hacer fade uso el algoritmo "sineout"

Código PHP:
leimnud.Package.Public({
    
info    :{
        Class    :
"maborak",
        
File    :"module.fx.js",
        
Name    :"fx",
        
Type    :"module",
        
Version    :"0.1"
    
},
    
content    :{
        
algorithm:function()
        {
            
this.make=function(options)
            {
                
this.options = {
                    
transition    "sineInOut",
                    
duration    2000,
                    
fps            70,
                    
onTransition: function(){},
                    
onFinish    : function(){},
                    
begin        0,
                    
end            100,
                    
timeBegin    : new Date().getTime()
                }.
concat(options || {});
                
this.timer    setInterval(function(){
                    var 
time = new Date().getTime();
                    if (
time this.options.timeBegin this.options.duration)
                    {
                        
this.cTime    time this.options.timeBegin;
                        if(
this.options.begin.isArray)
                        {
                            
this.result        = [];
                            for(var 
i=0;i<this.options.begin.length;i++)
                            {
                                
this.result.push(this.transitions[this.options.transition](this.cTimethis.options.begin[i], (this.options.end[i] - this.options.begin[i]), this.options.duration,0,0));
                            }
                        }
                        else
                        {
                            
this.result    this.transitions[this.options.transition](this.cTimethis.options.begin, (this.options.end this.options.begin), this.options.duration,0,0);
                        }
                        return 
this.options.onTransition(this);
                    }
                    else
                    {
                        
this.timer clearInterval(this.timer);
                        return 
this.options.onFinish(this);
                    }
                }.
extend(this),Math.round(1000/this.options.fps));
            };
            
this.transitions = {

                
/* Property: linear */
                /* cTime, from, (to - from),duration */
                
linear: function(tbcd){
                    return 
c*t/b;
                },

                
/* Property: quadIn */
                
quadIn: function(tbcd){
                    return 
c*(t/=d)*b;
                },

                
/* Property: quatOut */
                
quadOut: function(tbcd){
                    return -
*(t/=d)*(t-2) + b;
                },

                
/* Property: quadInOut */
                
quadInOut: function(tbcd){
                    if ((
t/=d/2) < 1) return c/2*t*b;
                    return -
c/* ((--t)*(t-2) - 1) + b;
                },

                
/* Property: cubicIn */
                
cubicIn: function(tbcd){
                    return 
c*(t/=d)*t*b;
                },

                
/* Property: cubicOut */
                
cubicOut: function(tbcd){
                    return 
c*((t=t/d-1)*t*1) + b;
                },

                
/* Property: cubicInOut */
                
cubicInOut: function(tbcd){
                    if ((
t/=d/2) < 1) return c/2*t*t*b;
                    return 
c/2*((t-=2)*t*2) + b;
                },

                
/* Property: quartIn */
                
quartIn: function(tbcd){
                    return 
c*(t/=d)*t*t*b;
                },

                
/* Property: quartOut */
                
quartOut: function(tbcd){
                    return -
* ((t=t/d-1)*t*t*1) + b;
                },

                
/* Property: quartInOut */
                
quartInOut: function(tbcd){
                    if ((
t/=d/2) < 1) return c/2*t*t*t*b;
                    return -
c/* ((t-=2)*t*t*2) + b;
                },

                
/* Property: quintIn */
                
quintIn: function(tbcd){
                    return 
c*(t/=d)*t*t*t*b;
                },

                
/* Property: quintOut */
                
quintOut: function(tbcd){
                    return 
c*((t=t/d-1)*t*t*t*1) + b;
                },

                
/* Property: quintInOut */
                
quintInOut: function(tbcd){
                    if ((
t/=d/2) < 1) return c/2*t*t*t*t*b;
                    return 
c/2*((t-=2)*t*t*t*2) + b;
                },

                
/* Property: sineIn */
                
sineIn: function(tbcd){
                    return -
Math.cos(t/* (Math.PI/2)) + b;
                },

                
/* Property: sineOut */
                
sineOut: function(tbcd){
                    return 
Math.sin(t/* (Math.PI/2)) + b;
                },

                
/* Property: sineInOut */
                
sineInOut: function(tbcd){
                    return -
c/* (Math.cos(Math.PI*t/d) - 1) + b;
                },

                
/* Property: expoIn */
                
expoIn: function(tbcd){
                    return (
t==0) ? Math.pow(210 * (t/1)) + b;
                },

                
/* Property: expoOut */
                
expoOut: function(tbcd){
                    return (
t==d) ? b+* (-Math.pow(2, -10 t/d) + 1) + b;
                },

                
/* Property: expoInOut */
                
expoInOut: function(tbcd){
                    if (
t==0) return b;
                    if (
t==d) return b+c;
                    if ((
t/=d/2) < 1) return c/Math.pow(210 * (1)) + b;
                    return 
c/* (-Math.pow(2, -10 * --t) + 2) + b;
                },

                
/* Property: circIn */
                
circIn: function(tbcd){
                    return -
* (Math.sqrt(- (t/=d)*t) - 1) + b;
                },

                
/* Property: circOut */
                
circOut: function(tbcd){
                    return 
Math.sqrt(- (t=t/d-1)*t) + b;
                },

                
/* Property: circInOut */
                
circInOut: function(tbcd){
                    if ((
t/=d/2) < 1) return -c/* (Math.sqrt(t*t) - 1) + b;
                    return 
c/* (Math.sqrt(- (t-=2)*t) + 1) + b;
                },

                
/* Property: elasticIn */
                
elasticIn: function(tbcdap){
                    if (
t==0) return b;  if ((t/=d)==1) return b+c;  if (!pp=d*.3; if (!a1;
                    if (
Math.abs(c)){ a=c; var s=p/4; }
                    else var 
p/(2*Math.PI) * Math.asin(c/a);
                    return -(
a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/)) + b;
                },

                
/* Property: elasticOut */
                
elasticOut: function(tbcdap){
                    if (
t==0) return b;  if ((t/=d)==1) return b+c;  if (!pp=d*.3; if (!a1;
                    if (
Math.abs(c)){ a=c; var s=p/4; }
                    else var 
p/(2*Math.PI) * Math.asin(c/a);
                    return 
a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/) + b;
                },

                
/* Property: elasticInOut */
                
elasticInOut: function(tbcdap){
                    if (
t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!pp=d*(.3*1.5); if (!a1;
                    if (
Math.abs(c)){ a=c; var s=p/4; }
                    else var 
p/(2*Math.PI) * Math.asin(c/a);
                    if (
1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/)) + b;
                    return 
a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/)*.5 b;
                },

                
/* Property: backIn */
                
backIn: function(tbcds){
                    if (!
s1.70158;
                    return 
c*(t/=d)*t*((s+1)*s) + b;
                },

                
/* Property: backOut */
                
backOut: function(tbcds){
                    if (!
s1.70158;
                    return 
c*((t=t/d-1)*t*((s+1)*s) + 1) + b;
                },

                
/* Property: backInOut */
                
backInOut: function(tbcds){
                    if (!
s1.70158;
                    if ((
t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*s)) + b;
                    return 
c/2*((t-=2)*t*(((s*=(1.525))+1)*s) + 2) + b;
                },

                
/* Property: bounceIn */
                
bounceIn: function(tbcd){
                    return 
this.transitions.bounceOut (d-t0cd) + b;
                },

                
/* Property: bounceOut */
                
bounceOut: function(tbcd){
                    if ((
t/=d) < (1/2.75)){
                        return 
c*(7.5625*t*t) + b;
                    } else if (
< (2/2.75)){
                        return 
c*(7.5625*(t-=(1.5/2.75))*.75) + b;
                    } else if (
< (2.5/2.75)){
                        return 
c*(7.5625*(t-=(2.25/2.75))*.9375) + b;
                    } else {
                        return 
c*(7.5625*(t-=(2.625/2.75))*.984375) + b;
                    }
                },

                
/* Property: bounceInOut */
                
bounceInOut: function(tbcd){
                    if (
d/2) return this.transitions.bounceIn(t*20cd) * .5 b;
                    return 
this.transitions.bounceOut(t*2-d0cd) * .5 c*.5 b;
                }

            }.
expand(this);
            
this.expand(this);
        },
        
fade:function()
        {
            
this.make=function(options)
            {
                
this.options = {
                    
duration1000,
                    
transition:"sineInOut",
                    
end    0,
                    
onFinish:function(){}
                }.
concat(options);
                
this.dom = ((this.options.dom || []).isArray)?this.options.dom:[this.options.dom];
                for(var 
i=0;i<this.dom.length;i++)
                {
                    
of     = (i==(this.dom.length-1))?this.options.onFinish:function(){};
                    new 
this.parent.module.fx.algorithm().make({
                        
duration     this.options.duration,
                        
end            this.options.end,
                        
transition    this.options.transition,
                        
begin         this.parent.dom.getOpacity(this.dom[i]),
                        
onTransition    : function(fx,dom){
                            
this.parent.dom.opacity(dom,fx.result*100);
                        }.
extend(this,this.dom[i]),
                        
onFinish:function(fx,dom,finish)
                        {
                            
this.parent.dom.opacity(dom,this.options.end*100);
                            return 
finish();
                        }.
extend(this,this.dom[i],of)
                    });
                }
                
this.expand(this);
            };
        },
        
move:function()
        {
            
this.make=function(options)
            {
                
this.options = {
                    
duration1000,
                    
transition:"sineInOut",
                    
end    0,
                    
onFinish:function(){}
                }.
concat(options);
                
this.dom this.options.dom;
                new 
this.parent.module.fx.algorithm().make({
                    
duration     this.options.duration,
                    
end        : [this.options.end.x,this.options.end.y],
                    
transition    this.options.transition,
                    
begin         : [parseInt(this.dom.style.left),parseInt(this.dom.style.top)],
                    
onTransition    : function(fx,dom){
                        
this.dom.style.left=fx.result[0];
                        
this.dom.style.top=fx.result[1];
                    }.
extend(this,this.dom),
                    
onFinish:function(fx,dom,finish)
                    {
                        
//alert(this.options.end[0])
                        
this.dom.style.left    this.options.end.x;
                        
this.dom.style.top    this.options.end.y;
                        return 
this.options.onFinish();
                    }.
extend(this,this.dom)
                });
                
this.expand(this);
            };
        }
    }
}); 
En el objeto algorithm, puedes ver como se usa cada uno de estos algoritmos, en teoria los algoritmos necesitan.

1.- Tiempo de inicio
2.- Tiempo transcurrido
3.- Tiempo de duracion

Y te devuelven el valor flotante que debe tener una accion especifica segun esos parametros. Es la clave para todos los "efectos" chulos :D.


connection closed.
__________________

Maborak Technologies