In AI, I have two similar objects overlapping. One at an angle.
In the places where their similar colors intersect, there is a tiny tiny border. Is this due to an antialiasing bug, and how can this be prevented?
4 Correct answers
It's an anti-aliasing issue that usually only affects the display on screen. But when exporting the pixels you might have it as well.
In order to get rid of it, either unite the objects or overlap them.
Very definitely an anti-aliasing issue. The light blue and the dark blue line up precisely as objects, but when it's anti-aliased, either on the screen or exporting, the anti-aliased edge pixel of the light blue becomes half-opaque, revealing the similar half-opaque darker blue below it. You can reproduce this exact effect in Photoshop.
To eliminate it, shrink your darker blue shapes slightly so they don't line up exactly, or butt them up against each other instead of overlapping the light bl
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It is the stacking order that causes the anti-aliasing artifact.
The 2 dark blue shape is sandwiched between the light blue 1 and 3 shapes.
As suggested moving the bottom part of the dark blue shape upwards will solve the problem.
As long as you have no control over how a viewer/browser is going to render this, based on how this is currently constructed, you will always have the chance of the "line" showing up. Vector objects are rendered from the bottom up, so as lomng as you have the light blue and dark blue stacked, even exactly posotioned, the dark blue can "peek" through.
To elimiante it when generating an image format, like PNG, instead of rendering at screen resolution directly, export it first at high-res (say, 30
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Very definitely an anti-aliasing issue. The light blue and the dark blue line up precisely as objects, but when it's anti-aliased, either on the screen or exporting, the anti-aliased edge pixel of the light blue becomes half-opaque, revealing the similar half-opaque darker blue below it. You can reproduce this exact effect in Photoshop.
To eliminate it, shrink your darker blue shapes slightly so they don't line up exactly, or butt them up against each other instead of overlapping the light blue.
Hi there,
Thank you for reaching out. I checked your file, and here are my observations. I hide the bounding box, smart guides, edges & switch to pixel view, and it looks like there is a tiny gap in decimal between the two elements. That's why that hairline is visible. If I press the arrow down key once it disappears. @Monika Gause, is this the case? Could you please confirm? I hope it helps!
Regards,
Anshul Saini
Did you download the file and look at it at all?
By @kindanewtothis4738432
Obviously he did. Otherwise there wouldn't be a screenshot, right?
The way this is built is quite uncommon. Is there a reason that it's built this way? Roaringmousegraphics suggested to make the dark ractangle smaller. Any reason that you can't do that?
Can you please tell us the whole story of what you're doing with that artwork? Why can't you change that construction? Have you taken a look at the Decimals setting in SVG export?
Did you try anything that has been suggested?
I'm not familiar with the decimals settings. Would changing that to a higher value alleviate this potentially?
By @kindanewtothis4738432
A higher value means more precision. So: yes.
It is the stacking order that causes the anti-aliasing artifact.
The 2 dark blue shape is sandwiched between the light blue 1 and 3 shapes.
As suggested moving the bottom part of the dark blue shape upwards will solve the problem.
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