Re: Working with images

[Daniel Kasak <dkasak nusconsulting com au>]

muppet wrote:

<snipped>

> how big is the fade image?  it is actually 400x300?  if you're using 
> an  offset of 50x100 to put it in a different place, then i wager 
> it's  smaller than 400x300, and you're getting garbage rendered into 
> the  remainder.  this would be the source of the "rendering bugs" -- 
> from  the screenshot it looks like they are actually extrapolations of 
> the  edge pixels, to fill in missing pixel values since you asked it 
> to draw  pixels that don't exist.

> i think what you actually want is to render only the bit that you need:
>
>    # calculate the upper left corner such that the small image
>    # is centered in the large one
>    my ($x, $y) = (
>        ($splash_frame->get_width - $fade_image->get_width) / 2,
>        ($splash_frame->get_height - $fade_image->get_height) / 2,
>    );
>    $fade_image->composite(
>        $splash_frame,
>        $x, $y,  # dest x/y
>        # render entire *source* image's area
>        $fade_image->get_width, $fade_image->get_height,
>        $x, $y,  # offset x/y (see below)
>        1, 1, # no scaling
>        'nearest',
>        $splash_counter * 2
> );
Right. So I need to have both the images the same size, is that right? 
When I dropped your code in, the background image ( which is 400x300 ) 
got clipped to the same size as the $fade_image. That's fine. I'm just 
mucking around with stray images at the moment. I can create 2 images of 
the same size.

<snipped>

> > Problem 1:
> > The first one is probably just my lack of understanding. What I 
> > *want*  is to have the background image remain 'static' in the 
> > background, ie  always completely visible. Then I want the 
> > $fade_image to fade in.
>
>
> did you set the transparency color correctly in the fade image?  
> (e.g.,  when you were saving from the gimp or whatever.)

Um ... no O:-)
I'll make another image...

I seem to have it figured out enough to continue from here.
Thanks for your help, muppet :)

--
Daniel Kasak
IT Developer
NUS Consulting Group
Level 5, 77 Pacific Highway
North Sydney, NSW, Australia 2060
T: (+61) 2 9922-7676 / F: (+61) 2 9922 7989
email: dkasak nusconsulting com au
website: http://www.nusconsulting.com.au

Title: CanIt Vote for ID 87616

---

The following links have been inserted by the NUS Consulting internal spam filter and are for NUS Consulting staff only
Spam
Not spam
Forget previous vote