On Thu, May 21, 2009 at 10:43 PM, Karl DeSaulniers <[email protected]> wrote: > Thanks Mark. > That is an interesting approach. > Pardon me for asking, but what part in your code initiates the sunset part?
Nothing really, if you mean how the change is triggered. But whenever the code runs, it will adjust the alpha. For testing, you can put all of it into an onEnterFrame(), but for production use you should run it only once when the page loads. If you really expect visitors to spend hours on your site, then use setInterval() to update it every couple of minutes. The general idea of the code is to calculate what fraction of 12h the current time is away from the begin of sunset, and then adjust the alpha accordingly. So, "sunset" here really means that it's the darkest minute of the day, just when it begins to get brighter. Mark > Karl > > Sent from losPhone > > On May 21, 2009, at 3:34 PM, Mark Winterhalder <[email protected]> wrote: > >> Hi, >> >> I *think* this does what you're trying to do, which would be to fade >> the alpha of an image in and out again over 24h. I don't have AS2 so I >> can't test, but when you do, you can set minutesPerDay to however long >> you may wish to sit there and watch the magic happen. If it happens, >> that is, because as I said it's untested. >> Please, reconsider putting it into an enterFrame handler. It's really >> enough to run it every couple of minutes. >> >> Also, no, unfortunately I have no idea why Flash is acting up for you. >> The operator use appears to be correct. >> >> >> var sunrise : Number = 6; // hour of day when sun begins to rise >> var maxAlpha : Number = 100; >> >> var minutesPerDay : Number = 24 * 60; >> var time : Date = new Date(); >> var minuteOfDay : Number = time.getHours() * 60 + time.getMinutes(); >> var deltaMinutes : Number = (minuteOfDay - sunrise * 60 + >> minutesPerDay) % minutesPerDay; >> var cycleElapsed : Number = deltaMinutes / minutesPerDay; // [0...1[ >> var alpha : Number = Math.abs( 0.5 - cycleElapsed ) * 2 * maxAlpha; >> >> BKGND.BKGND_Grad._alpha = alpha; >> >> >> HTH, >> Mark >> >> >> >> >> On Thu, May 21, 2009 at 7:14 AM, Karl DeSaulniers <[email protected]> >> wrote: >>> >>> EEEk.. anyone!!! >>> >>> What am I doing wrong?? This is AS2. >>> >>> var sunrise:Array = new Array("6", "7", "8", "9", "10", "11", "12", "13", >>> "14", "15", "16", "17"); >>> var sunset:Array = new Array("18", "19", "20", "21", "22", "23", "0", >>> "1", >>> "2", "3", "4", "5"); >>> >>> var time:Date = new Date(); >>> var hour:Number = time.getHours(); >>> var hours:String = hour.toString(); >>> var snRSE:String = sunrise[hours]; >>> var snSET:String = sunset[hours]; >>> >>> this.onEnterFrame = function() { >>> if (hours == snRSE) { >>> BKGND.BKGND_Grad._alpha -= BKGND.BKGND_Grad._alpha + >>> 8.33333333333; >>> } else if (hours == snSET) { >>> BKGND.BKGND_Grad._alpha += BKGND.BKGND_Grad._alpha + >>> 8.33333333333; >>> } >>> }; >>> >>> I feel this is probably so easy, but it is eluding me for some reason. >>> flash says for this line: >>> >>> if (hours == snRSE) { >>> >>> - "operator "=" must be followed by an Operand" ??? >>> >>> >>> Karl DeSaulniers >>> Design Drumm >>> http://designdrumm.com >>> >>> _______________________________________________ >>> Flashcoders mailing list >>> [email protected] >>> http://chattyfig.figleaf.com/mailman/listinfo/flashcoders >>> >> >> _______________________________________________ >> Flashcoders mailing list >> [email protected] >> http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > > _______________________________________________ > Flashcoders mailing list > [email protected] > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
