Illustrator CC line gradient bug
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- stewart
In Illustrator CS I have a gradient applied to a line, the gradient is following the line. So far so good.
But when I use this .ai file in InDesign, a bug shows up: small white spots in the gradient, on different places when zooming in.
What I did not expect is that this also effects exported jpg's and pdf's. But it does. What's going on here?
Screen:
Exported jpg from InDesign:
- stewart0
The same happens when I convert the path to an outline (it makes a gradient mesh, which has exactly the same bugs).
- hans_glib0
does it look like that when you print it?
or export the jpg from illy?
- Also when directly exported from illy: https://i.imgur.com/…stewart
- uan0
does it show up when you print it?
might be some gpu indesign problem just affecting you gpu rendering.
- detritus0
What does it look like when you have view anchors on? There's definitely not an extra anchor side by side, perhaps twisted?
Also, (and I apologise in advance as I'm not in front of Illustrator right now) what happens when you play with the stroke's caps and corners?
- Can't make a screenshot of the anchors, but they are okay. Not twisted, no double anchors at the same location etc. Caps & corners no effect.stewart
- Have you tried replicating in a new document - also, sounds stupid, but what happens when you copy paste into a new document, different position?detritus
- There's a couple of gltiches I encounter in Illy that are utterly bewildering and unfixable beyond copying into a virgin doc and saving out again *shrug*detritus
- Also - perhaps upload the portion in question so we can have a look on our machines?detritus
- stewart0
Pfff it only occurs when the gradient is 'along stroke'.
But that's exactly what I need.
- What happens when you tweak the angle ever so slightly - does the form of the glitching change or disappear?detritus
- that stroke is pretty heavy for that curve. i often get issues with strokes undergoing that kind of stress, even with flat colour.hans_glib
- dunno anything about gradients along lines, but would it survive a blend between two lines? define inner and outer curve then blend?hans_glib
- monospaced1
What happens if you add a couple extra points along the way?
- uan1
using save for web in AI gave me white artefacts for jpg and png exports.
disabling this in the save for web options made the artefacts disapear:
at least I can confirm it's one weird AI bug.
- stewart0
This is the ai file:
https://wetransfer.com/downloads…
- Gnash1
The exported jpeg is fine (from the file you posted). Also exported a PDF file which was also good.
I do get similar glitches in the illustrator file -- but it looks like it's only a 'preview' thing.
- CC 2017, macbook pro 2011Gnash
- I guess you could try "expand appearance" if you're still glitching but all seems good on my endGnash
- Export from InDesign is not OK here. Placed & rotated some glitches are also exported to jpeg somehow.stewart
- ah, I'll give that a go. odd, it seems like InD is exporting a preview...Gnash
- detritus0
Your test file is working all fine here too - I see the artefacts at particular zoom levels, but they're not really there as such, nor in exports.
- i_monk0
As I recall there used to be issues with gradients when the span they cover wasn't long enough to account for each step of colour change, so you'd get distinct/noticeable chunks of colour. Perhaps this is related. If you scale the artwork up 500% in Illy do the artifacts still show up in ID?
- Gnash0
I output a PDF & Jpeg from InDesign (2017cc) and both files look good. I imported the file you linked earlier without resaving, or opening it, on my end
I've linked them below
Try deleting preferences? not sure what to suggest...