if (typeof(Bytex64) == 'undefined') Bytex64 = {};
Bytex64.FX = {};
Bytex64.FX.version = 1.0;

Bytex64.FX.Effect = function(fx, secs) {
    this.fx = fx;
    this.secs = secs;

    this.run = function() {
        Bytex64.FX.run(this.fx, this.secs);
    };
};

Bytex64.FX.ParallelEffect = function(fxs, secs) {
    this.fx = function(p) {
        for (i in fxs) {
            fxs[i](p);
        }
    };
    this.secs = secs;

    this.run = function() {
        Bytex64.FX.run(this.fx, this.secs);
    };
};

Bytex64.FX.EffectChain = function(chain) {
    this.chain = chain;
    this.current = 0;

    this.fx_current = function(p) {
        this.chain[this.current].fx(p);
    };

    this.run = function() {
        _this = this;

        fx = function(p) {
            _this.fx_current(p);
            if (p == 1.0)
                _this.run_next();
        };

        Bytex64.FX.run(fx, this.chain[this.current].secs);
    };

    this.run_next = function() {
        this.current++;

        if (this.current >= this.chain.length) {
            this.current = 0;
            return;
        }

        this.run();
    };

};

Bytex64.FX.updateInterval = 50;

Bytex64.FX.run = function(fx, secs) {
    secs = secs * 1000;

    var interval;
    var start = (new Date()).getTime();

    fx(0.0);

    interval = setInterval(function() {
        var d = (new Date()).getTime() - start;
        if (d >= secs) {
            clearInterval(interval);
            fx(1.0);
        } else {
            fx(d/secs);
        }
    }, Bytex64.FX.updateInterval);
}

Bytex64.FX.create = function(fx, secs) {
    return function() {
        Bytex64.FX.run(fx, secs);
    }
}

Bytex64.FX.fadeIn = function(elem) {
    return function(p) {
        if (p == 0.0)
            elem.style.display = 'block';
        elem.style.opacity = p;
    }
}

Bytex64.FX.fadeOut = function(elem) {
    return function(p) {
        elem.style.opacity = 1.0 - p;
        if (p == 1.0)
            elem.style.display = 'none';
    }
}

/* vim: set ts=4 sts=4 sw=4 expandtab: */