Hmm... maybe I misunderstood what you were trying to do.
Do you want to have a continuous sunrise and -set over 24h, or do you
want to have a sudden sunset or -rise twice a day?
Mark
On Thu, May 21, 2009 at 10:57 PM, Mark Winterhalder <mar...@gmail.com> wrote:
> On Thu, May 21, 2009 at 10:43 PM, Karl DeSaulniers <k...@designdrumm.com>
> 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 <mar...@gmail.com> 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 <k...@designdrumm.com>
>>> 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
>>>>
>>>> _______________________________________________
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>>>>
>>>
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>>
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>
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