Re: Resize filters

On Mon, 23 May 2011, [email protected] wrote:
>>
>> What resize API function are you invoking and what parameters are you
>> passing?
>
>
>    image2=ResizeImage(imgstruct->image, x, y, filter, 1.0, &exception);

This seems reasonable.

> is what I've got currently. I'm experimenting w/ all the resizing
> facilities atm and some are working well, others are not (Resize,
> Thumbnail cause segfault); I don't know what extra preparation is required
> by me.

Segmentation faults are likely your fault.  However, it is wise to 
invoke InitializeMagick(NULL) at the start of your program.

> Perhaps at this point, you could tell me: what is the relationship
> between ImageInfo and Image? I'm keeping them together currently, but in
> my (brief) experience so far, it seems ImageInfo is mostly (only?) used
> to bootstrap loading an image.

Right.  ImageInfo is primarily used to pass settings for when the 
image is not available yet.  There is some documentation on the 
various types to be found at 
"http://www.graphicsmagick.org/api/types.html".  And of course the 
documentation for ResizeImage may be found at 
"http://www.graphicsmagick.org/api/resize.html#resizeimage".

Bob
-- 
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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