Vector brush and Text clipping

[Pšenda]

Hi.

I have the Donut shape (and any other) with Image and Rectangle.

 

If Image and Rectangle clip under Donut, then clipped outside and inside Donut.

 

It is perfect, so I imagined it.

 

If I have Vector brush or Text

 

and clip it,

 

Vector brush and Text clipped only outside.

 

It is OK?

Thanks Pavel

[toltec]

It is not OK!

 

Group the text and brush layers first.

 

Then right click on the donut and do Mask to Below

[Guest]

Hi Pavel,

I'm also under W 10 and for me the behavior is different depending on the version of AD.

With version 1.5.3.69 the text and the brush are cut inside and out.

With version 1.6.0.80 (Beta), they are cut only on the outside, as in your example.

[R C-R]

Just to make things that much more confusing, when I do the clipping with the donut shape in AD 1.5.5 on my Mac, the interior of the donut shape does not clip the other objects unless I change its total angle to less than 360° (producing a slit in the donut), & then it does:

This does not happen when I use a cog with a hole in it instead of a donut as the clipping layer so I assume this is a bug in the implementation of the donut tool's logic.

 

Edit: I just checked with the latest Mac 1.6.0 (Beta 7) AD version & the behavior is the same.

Edited August 20, 2017 by R C-R
Beta check info added

[JimmyJack]

Turn on "Use Precise Clipping" in Preferences > Performance.

 

(It'll solve the non antialiased clip issue (for text & brushes other than basic) also.)

[R C-R]

7 minutes ago, JimmyJack said:

Turn on "Use Precise Clipping" in Preferences > Performance.

 

(It'll solve the non antialiased clip issue (for text & brushes other than basic) also.)

Works for me, even for basic brushes, but I still think this is a bug in the implementation of the donut shape. Otherwise, the behavior would be the same for the Cog shape, right?

[JimmyJack]

The basic brushes, for me, get anti-aliased regardless of the clip quality setting. (It's a little dirty but AA nonetheless.)

But, I've given up on asking "why?"... in this case, one and not the other.  

 

Which leads me to the next point:

42 minutes ago, R C-R said:

....but I still think this is a bug in the implementation of the donut shape. Otherwise, the behavior would be the same for the Cog shape, right?

 

Certainly seems that way.

Why one and not the other? Bug .... oversight ... aliens, I dunno. 

 

[toltec]

59 minutes ago, R C-R said:

Just to make things that much more confusing, when I do the clipping with the donut shape in AD 1.5.5 on my Mac, the interior of the donut shape does not clip the other objects unless I change its total angle to less than 360° (producing a slit in the donut), & then it does:

 

This does not happen when I use a cog with a hole in it instead of a donut as the clipping layer so I assume this is a bug in the implementation of the donut tool's logic.

 

Edit: I just checked with the latest Mac 1.6.0 (Beta 7) AD version & the behavior is the same.

I tried by turning the donut into curves first, still the same.

 

Oddly, if I used the letter O it was OK 

 

 

[Guest]

By converting the donut to curves (as suggested by toltec) and then performing a Boolean "Divide" operation on it, and putting the center part in white (or even another color), the behavior returns to normal .

[Pšenda]

reglico, it is too radical way, because center part overrides all information from the bottom/background layer.

Clipping has the advantage of hiding only information from selected object.

 

JimmyJack: "Use Precise Clipping" in Preferences > Performance.

Thanks, it works :-)

[Guest]

11 hours ago, JimmyJack said:

Turn on "Use Precise Clipping" in Preferences > Performance.

Hi JimmyJack,

I had missed your message!

Effectively, the only reason that the operation was different in both versions was that "Use Precise Clipping" was enabled in the current version and disabled in the Beta version. I did not realize it, so a big thank you to you for the solution!

[MEB]

Hi Pšenda,

Welcome to Affinity Forums

This is a bug. "Use Precise Clipping" shouldn't have made any difference here other than affecting the quality of the clipping (edges).

I'm logging this to be looked at.

[Guest]

17 minutes ago, Pšenda said:

reglico, it is too radical way, because center part overrides all information from the bottom/background layer.

Clipping has the advantage of hiding only information from selected object.

It is true that my method was a worse going to be far from perfect!

[Guest]

3 minutes ago, MEB said:

Hi Pšenda,

Welcome to Affinity Forums

This is a bug. "Use Precise Clipping" shouldn't have made any difference here other than affecting the quality of the clipping (edges).

I'm logging this to be looked at.

Hi MEB,

I do not know if this is a bug, but checking "Use Precise Clipping" solved the problem for me as well.

[MEB]

Hi @reglico,

Yes, I'm aware of it but it should work correctly no matter that option is checked or not.

[Guest]

3 minutes ago, MEB said:

Hi @reglico,

Yes, I'm aware of it but it should work correctly no matter that option is checked or not.

You're right, I did the test in the current version by disabling "Use Precise Clipping" and it works.

[Pšenda]

MEB: This is a bug. 

The problem with inside clipping is only with the inner circle/elipse.

If the circle is disturbed, clipping works well.

 

Thank you for reporting a bug.

[JimmyJack]

17 hours ago, Pšenda said:

MEB: This is a bug. 

The problem with inside clipping is only with the inner circle/elipse.

If the circle is disturbed, clipping works well.

 

Thank you for reporting a bug.

 

This isn't working for me. Maybe just a PC thing? How did you perturb? Add points/move? Boolean? Precise clipping is still off right?

Can someone else try on Mac?

[R C-R]

25 minutes ago, JimmyJack said:

This isn't working for me. Maybe just a PC thing? How did you perturb? Add points/move? Boolean? Precise clipping is still off right?

Can someone else try on Mac?

It is not working for me either when I convert the donut to curves & add nodes to create the notch. It does work when I add a rectangle & boolean add that to the donut to form the notch, converting the donut to a Curves object.

[JimmyJack]

14 minutes ago, R C-R said:

It is not working for me either when I convert the donut to curves & add nodes to create the notch. It does work when I add a rectangle & boolean add that to the donut to form the notch, converting the donut to a Curves object.

 

Ah. Interesting. Yesterday both did nothing, but today I'm getting the same as you.

So I surmise that the boolean is reordering points. 

To test:

1) I used the Donut, Divided, re-subtracted....... did not work.

2) I used the Donut, Divided, grabbed one (either) circle and reversed the curve, re-subtracted....... worked.

 

So I'm thinking that the Donut tool, and not the Cog tool, has opposing curve directions upon creation that don't play well when Precise Clipping is off.... for some reason. If the same experiment is done on the Cog, clipping will break and act like the original Donut.

[R C-R]

1 hour ago, JimmyJack said:

2) I used the Donut, Divided, grabbed one (either) circle and reversed the curve, re-subtracted....... worked.

I am not sure what you mean about reversing the curve -- did that involve creating a compound object or what?

[JimmyJack]

1 hour ago, R C-R said:

I am not sure what you mean about reversing the curve -- did that involve creating a compound object or what?

 

Nope, never made it compound. (not even sure if a vector pen clip is doable in a compound. Bitmap fill yes. But I digress).

 

Donut > convert to curves (gives you a curveS layer) > divide: you get two circles (I went straight to divide from the donut to skip the middle step).

Grab one circle and click Reverse Curve (Node tool). 

 

Re-subtract the two circles to go back to a CurveS "donut" shape.

 

Clipping now works.

 

 

[Guest]

Hi JimmyJack,

Thank you for this solution that will work while waiting for the correction of this bug in an upcoming update.

[R C-R]

4 hours ago, JimmyJack said:

Donut > convert to curves (gives you a curveS layer) > divide: you get two circles (I went straight to divide from the donut to skip the middle step).

Grab one circle and click Reverse Curve (Node tool).

{...}

Re-subtract the two circles to go back to a CurveS "donut" shape.

Thanks for the detailed explanation. I noticed from the light UI in your screenshot that you are (I assume) testing with a beta, but in case anyone is wondering I get the same results using the current Mac retail version.

 

As for a workaround, I think for now it would be simpler just to start with two circles, subtract the smaller one, & use the resulting Curves layer for clipping instead of a converted donut. Even better, use a cog shape with the Inner radius set to 100%, effectively making it a smooth, 'toothless' circle with a hole size that remains adjustable:

[JimmyJack]

My workaround of choice is to use Precise Clipping. It's never off when I work anyway. I just noticed the rough edges in the original examples.

 

The whole thing with the Reverse Curve wasn't meant as a practical solution.

It was more of a diagnostic exercise to figure what the heck was going on if interested eyes are watching.

 

Not sure how (or if) simply turning on Precise Clipping affects a single curve direction, but that, at least, seems to be the issue when it's off.