Q: Can I use only a part of an Image File and do stuff with it ?

[Jim Lambert]

And here's the code:

http://netrin.on-rev.com/animateimage/animateimage.html

Jim Lambert


On Sep 30, 2009, at 11:29 AM, Jim Lambert wrote:

>>
>> Date: Wed, 30 Sep 2009 18:13:05 +0300
>> From: Richmond Mathewson <richmondmathewson at gmail.com>
>> Subject: Re: Q: Can I use only a part of an Image File and do stuff
>> 	with it ?
>> To: How to use Revolution <use-revolution at lists.runrev.com>
>> Message-ID: <4AC37581.1020105 at gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> Rolf Kocherhans wrote:
>>> For instance I have an imported Image file (png) 10 pixels high and
>>> 100 pixels long.
>>>
>>> From pixel 1 to 10 ist Picture_one, from pixel 11 to 20 is Picture
>>> _two etc.
>>>
>>> Can I the display those 2 respectively 10 pictures individually ?
>>>
>>> Cheers
>>> Rolf
>>> _______________________________________________
>>> use-revolution mailing list
>>> use-revolution at lists.runrev.com
>>> Please visit this url to subscribe, unsubscribe and manage your
>>> subscription preferences:
>>> http://lists.runrev.com/mailman/listinfo/use-revolution
>>>
>> If you look up 'pixel' in the Documentation you will find that this
>> cannot be done.
>>
>> However, you could chop up your image by importing snapshots of  
>> parts of it:
>>
>> on mouseUp
>>   import snapshot from rectangle 0,0,300,454 of img "iXYZ"
>>   move the last img to 512, 600
>>   delete img "iXYZ"
>> end mouseUp
>
>
> You can also
> 	Select the Image
> 	Group it
> 	Crop the group so that it shows only one of your sub images.
> 		In your example, that means you crop the group so that only pixels  
> 1 thru 10 show.
> 	LOCK the group's size and position
> 	Change the location of the image
> 		In your example, that would mean subtracting 10 from the image's  
> LEFT.
> 		Each time you do that this would have the effect of stepping  
> through the 'frames' of your 'movie'.
> 		Do it rapidly and you can make a kind of animation from a single  
> image.
>
>
> Jim Lambert