Re: [Swftools-common] Problems with PNG placement

[Chris Pugh]

This seems to be a reasonably thorough discussion of bounding boxes,
and the relationship between space co-oridinates for shapes, and space
co-oridinates for movies.

HTH

Regards,


Chris.

On 18 March 2010 12:09,  <address@hidden> wrote:
> I have the same problem with image positioning while moving or rotating
> an image.
> If I compile this code:
>
> .flash bbox=200x100 filename="ftest1.swf" fps=25
>  .png slika1 "pict01.png"
>  .put slika1 pin=center x=100 y=50 scale=0%
>  .frame 50
>  .change slika1 rotate=360 scale=100%
>  .frame 100
> .end
>
> the picture finnishes as rotated for only around 350 degrees (see
> attachment p1.png).
>
> If I, trying to compensate, change the code to this:
>
> .flash bbox=200x100 filename="ftest1.swf" fps=25
>  .png slika1 "pict01.png"
>  .put slika1 pin=center x=100 y=50 scale=0%
>  .frame 50
>  .change slika1 rotate=361 scale=100%
>  .frame 51
>  .change slika1 rotate=360
>  .frame 100
> .end
>
> then it is almost correct, but not quite (rotated around 358 degrees).
>
> But if I change the code as Mick suggested (thanks Mick!), it ends up
> rotated correctly (of course, in HTML embedding code I leave width=200
> and height=100):
>
> .flash bbox=2000x1000 filename="ftest1.swf" fps=25
>  .png slika1 "pict01.png"
>  .put slika1 pin=center x=1000 y=500 scale=0%
>  .frame 50
>  .change slika1 rotate=360 scale=1000%
>  .frame 100
> .end
>
> The swfc version I'm using is 0.9.0 and was installed in Ubuntu 9.10
> from Ubuntu repositories. I checked viewing the .swf with Opera and
> Firefox browser, in Ubuntu Linux, and WinXP, and I get the same results
> in all of them.
>
> Regards,
> nevenq
>
>
>> Hi Chris,
>>
>> Refusing to give up, I took a look at some of the code. Twips seem
>> to crop up quite a lot in various routines. I had assumed the metric
>> used for size, position etc. was pixels. Out of interest I
>> multiplied all my pixel values by 20 to convert them to twips. This
>> gave:
>>
>> .flash filename="test_swfc.swf" version=6 fps=50 bbox=8700x2440
>>   .png img1 filename="test.png"
>>   .put img1 scalex=8700 scaley=2440
>> .end
>>
>>
>> The image now renders perfectly. The HTML maintains the original size
>> in pixels as specified by the object tag. Notice I had to add the
>> scalex and scaley properties to the .put command. Additionally, any
>> subsequent zooming or moving of the image is now carried out with a
>> great deal more accuracy.
>>
>> I'm still not sure I fully understand why this method works better.
>> It would be nice if someone could maybe explain what is happening
>> under the bonnet and how twips and pixels fit into the bigger picture.
>> Anyway, for now I have a workaround :-)
>>
>> Cheers,
>> Mick