Cropping one pixel out?

[trevkin]

Hello,

Thanks for a great tool, i have just one very very little problem (one pixel in fact )....

I use a combination of your crop class and dropshadow class to create square thumbnails of 100 pixels square.
I fix the interface to 300x300 max image size box and the cropping tool to 200x200 and make the resize proportional.
This then saves the cropped image and then uses dropshadow to create a 100x100 pixel thumbnail.
This works great but sometimes however a 99x100 or 100x99 thumbnail appears.
This is coming from the crop tool which occasionally creates an image that is one pixel wider or higher then the other axis.
Im assuming that this is some kind of math problem inside the class that is either rounding up or down in certain circumstances.
It isnt specific to the image (it can sometimes do it, sometimes not on the same image) but more the position you crop from in an image.

Hope someone can help, thanks

[amnuts]

Hi, and welcome to the board!

It certainly does sound like a rounding issue, as rounding takes place quite a bit, especially when using ratio-based sizing and the max display size.

When you say you set the interface to 300x300, is that using the max display size, or do you mean that you fixed the initial crop size to be 300x300?

Is it always the cropping part that incorrectly crops the size? For example, have you saved the crop before resize to make sure that it's correct according to the interface before the resize takes place? Might help to track down if it's definitely the cropping part rather than the resizing.

Andy

[trevkin]

Hi Andy,

Sorry i was not too clear, yes i set the max display size to 300x300 and i fix the default crop size to 200x200 but make it proportionally resizeable.
The incoming image sizes can vary wildly (probably why its happening) but i leave the thumbnailer to worry about that after the crop.
I have eliminated the dropshadow class from the error, its always the cropped image pre-thumbnailing where the discrepency occurs.
I doubt this would be a problem for most users but perhaps something that checked whether the required crop has equal sides could ensure that the resulting image was the same.

Cheers for you help.

Trev

[amnuts]

Great feedback! Thanks for clearing that up for me, Trevkin. I'll have a look in to the issue at some point and see what I can do.

Andy

[wozzzzza]

any news on a fix for this 1 pixel out cropping? im noticing it too.