is this a feature or a BUG? video inside.

I test illustrator CS5 and I found a video whith something I would call a big BUG. but take a look.

http://www.YouTube.com/watch?v=gcREyhfeoGU

I've been to reproduce the same feature/bug on my trial version of illustrator CS5.

any suggestions?

kux73

> Why illustrator Exchange shape paths, when you give them a transversal? It makes no sense at all.

By turning on "Snap to Pixel Grid", you are saying that Illustrator - no matter where I draw a path or what race width I chose, please try to make it fall on whole pixels.

Now, consider this example:

Draw a rectangle as in this example (the Black Watch the grid of pixels and the blue box is the path of the rectangle).

Now define a white line with a width of 2 pixels - everything seems very well because the race falls on whole pixels.

But what happens if the width of the line: 1 pixel? Not very good, now the race falls on half pixels and gets a little blurred out by anti-aliasing.

If you set snap to grid of pixels for this rectangle, Illustrator will 'fix' the problem by the way of the path. In this example, the path now falls on a pixel, so that the race will be on a whole pixel.

Now you can see what line up on the grid of pixels. So imagine if the original rectangle had only the top of the path on the edge of pixel, but the background was a pixel (or some other fraction). Here the 1 pixel wide line appears on the bottom of the rectangle, but not the sides or the top.

Line them up on pixel grid can still clean it up, but the size of the rectangle will be changed by half a pixel in height.

So now you can see the power of this feature - it can save hours and hours of cleanup in Photoshop for web graphics. You can also see that the abuse of this feature can create results like what is shown in the Youtube video misleading.

Tags: Illustrator

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