Cutting a portion of a circle at an angle

[KelRao]

Hello,

I am trying to recreate the attached circle.  I've drawn out a circle to match size, converted to curves, broke the curves and deleted the lines...turned out pretty good.  However, the ends of my broken circle are squared off and I'd like them to be on the diagonal as per attached.  Any guidance would be appreciated.circle-border.afdesign

[thomaso]

Draw a full Donut with the Donut Tool –> set its inner radius
–> place a Rectangle on top for the cutting edges
–> choose the Geometry option "Subtract"

[KelRao]

Goodness, that was easy!  Thank you Thomaso!

[KelRao]

Well, maybe I typed too fast!  If I change the donut to 1px radius, and do the subtract, both graphics go away.  EDIT:  figured it out.

[thomaso]

1 pixel radius? Is it still a donut then? Just curious: What is the size of the cut edge with a donut of 1px radius? And how did you solve it?

[KelRao]

I didn't really want a donut, but a clean black circle that I could punch through.  Thus, I made the hole ratio 98%.  Then I created a transparent rectangle and turned it slightly, so I'd get the angled edges on the circle vs. flat.  Selected both, did the geometry subtract, and it worked great!  

I did just try drawing a circle, convert to curves, place the transparent rectangle, and repeat above (skipping donut shape).  But it did not work the same; joined the intersection of the punch vs. just leaving the circle open ended.

Here's the final result (my new logo).

[R C-R]

2 hours ago, KelRao said:

I did just try drawing a circle, convert to curves, place the transparent rectangle, and repeat above (skipping donut shape).  But it did not work the same; joined the intersection of the punch vs. just leaving the circle open ended.

It won't work because the booleans consider only the area enclosed by the shape, not the stroke width (if any). That's why you need to use a donut or the Layer > Expand Stroke option to enclose an area the booleans consider.

[KelRao]

Thanks so much RC-R!  Still learning but I just love this software so much!  Now to figure out why there is a white box behind the circle when I export as .eps!  I just made a transparent PNG for now.

[Alfred]

23 minutes ago, KelRao said:

Now to figure out why there is a white box behind the circle when I export as .eps!

The EPS format doesn’t support transparency.

[Pšenda]

3 hours ago, KelRao said:

Here's the final result

Just my opinion:

- I would adjust the kerning between the letter e and w, the space between them is inadequately large compared to the other letters,

- I would reduce the gap between the broken circle and the tail of the letter K a little to make them more optically connected,

- and vice versa, I would increase the space between the circle and the letter w a little, because they are too tight now.

[thomaso]

4 hours ago, KelRao said:

I did just try drawing a circle, convert to curves, place the transparent rectangle, and repeat above (skipping donut shape).  But it did not work the same; joined the intersection of the punch vs. just leaving the circle open ended.

A circle or simple curve shape has a single stroke only, while a donut displays two strokes (inner + outer).
You can use a simple circle or ellipse shape but then need to expand its stroke before you subtract the rectangle.

Also you can adjust the end nodes of your shape (regardless how it was created).
For the upper end (at W) it's easier first to place an extra node (instead of moving the existing) + delete the unwanted node.

But actually I am still curious what made you mentioned "a radius of 1 pixel", I guess it is a misunderstanding because it is useless small for this task. But what was it referred to?

[KelRao]

2 hours ago, Alfred said:

The EPS format doesn’t support transparency.

Thank you so much.  That solves that mystery.  Always learning.  So, the PNG format would have to do or perhaps SVG if I wanted this printed on something other than white card stock?  

[KelRao]

1 hour ago, thomaso said:

A circle or simple curve shape has a single stroke only, while a donut displays two strokes (inner + outer).
You can use a simple circle or ellipse shape but then need to expand its stroke before you subtract the rectangle.

Also you can adjust the end nodes of your shape (regardless how it was created).
For the upper end (at W) it's easier first to place an extra node (instead of moving the existing) + delete the unwanted node.

But actually I am still curious what made you mentioned "a radius of 1 pixel", I guess it is a misunderstanding because it is useless small for this task. But what was it referred to?

Just too fabulous and helpful!  You must be a whiz at this stuff with over 6K comments!  I think I misspoke (err typed) about the 1 pixel radius.  Sorry for the confusion.  

[thomaso]

I am no whiz at all, especially curve and node handling in Affinity and its geometry options are often something I need to try myself first , in particular the various possible modifier keys I can't keep in mind. For those the context related tool tips displayed permanently in the main window bottom line are quite helpful!

I was sure that 1 px must have been a misunderstanding. But what did you actually mean and experience?

18 hours ago, KelRao said:

Well, maybe I typed too fast!  If I change the donut to 1px radius, and do the subtract, both graphics go away.  EDIT:  figured it out.

… especially since you were able to solve it yourself. (you see, being curious, interested, is one way to collect useful knowledge;)

[KelRao]

Just now, thomaso said:

I am no whiz at all, especially curve and node handling in Affinity and its geometry options are often something I need to try myself first , in particular the various possible modifier keys I can't keep in mind. For those the context related tool tips displayed permanently in the main window bottom line are quite helpful!

I was sure that 1 px must have been a misunderstanding. But what did you actually mean and experience?

… especially since you were able to solve it yourself. (you see, being curious, interested, is one way to collect useful knowledge;)

OK it took me a bit to recreate what didn't work but here we go!  Create the donut and change the hole radius to 100%.  It appears there is a single pixel border by doing this.  Then put the rectangle over the circle and Geometry > Subtract.  The donut goes away completely.  Now decrease the radius to 99% and repeat.  This time it works as intended.  One thing I learned today, on top of everything else, is you can simply create the donut (99%) and then use the start and end angles.  I did try converting that to curves to see if I could adjust the angle of the ends like you suggested above but that didn't work at first try.  I'll try again.

[KelRao]

2 hours ago, Pšenda said:

Just my opinion:

- I would adjust the kerning between the letter e and w, the space between them is inadequately large compared to the other letters,

- I would reduce the gap between the broken circle and the tail of the letter K a little to make them more optically connected,

- and vice versa, I would increase the space between the circle and the letter w a little, because they are too tight now.

Thank you.  Good eye.  Will fix.

[thomaso]

12 minutes ago, KelRao said:

Create the donut and change the hole radius to 100%.  It appears there is a single pixel border by doing this.  Then put the rectangle over the circle and Geometry > Subtract.  The donut goes away completely. 

Ah, 100 instead of 1, okay. – I would not expect any donut to appear if its inner radius is set to 100%. Then I'd expect inner and outer radius would cover or hide each other, respectively would result in a donut with a stroke width = zero. Isn't its width = outer minus inner radius, while both can't exceed 100%?

I guess the pixel stroke you have seen is rather an issue (~ bug). It also occurs if I apply a shadow effect to such a donut of actually 0 line width (which accordingly would not cause a shadow at all in my view).

[firstdefence]

Isn't it just easier to arc the donut?

 

 

[KelRao]

21 minutes ago, firstdefence said:

Isn't it just easier to arc the donut?

 

It would be (as I later discovered); but how do we taper the ends to make them diagonal and not flat?

[Alfred]

9 hours ago, KelRao said:

Thank you so much.  That solves that mystery.  Always learning.  So, the PNG format would have to do or perhaps SVG if I wanted this printed on something other than white card stock?  

TIFF also supports transparency, but JPEG doesn’t.

[firstdefence]

2 hours ago, KelRao said:

It would be (as I later discovered); but how do we taper the ends to make them diagonal and not flat?

Are you looking for something that is more like a thin crescent shape, see video below for an alternative way to achieve that sort of shape using the ellipse tool and and the stroke panel.

 

 

[R C-R]

10 hours ago, firstdefence said:

Isn't it just easier to arc the donut?

Not if the idea is to get ends that look like in this post by the OP, so they are squared off horizontally & vertically rather than as arcs in the donut.

[firstdefence]

Actually if the theme is sewing, maybe a twist on my last misinterpretation...

[firstdefence]

Added the file @KelRao

Sew this is it eh!.afdesign

[Alfred]

1 hour ago, Hens said:

At least you've got an eye for it 😉

Says he, pointedly.