Maarten van der Velde wrote:

I'm not sure if I understand your question, but I'd propose that you

• start drawing a 360 degree circle,
• and simply set it's width and height properties, which are by definition the diameter (?)
• After the circle has the right proportions, double click it and set the angle that you want it to fill.

Is there an easy way to draw short arcs through a defined angle and radius/diameter, please?

Arcs can be drawn with the circle command, but whilst the angle is displayed when drawing, the diameter isn't.

When the circle is initially drawn out, the 'start' and 'end' values are displayed and can be set and edited, but not the diameter (height and width). When editing an arc, only the start and end values and width and height of the containing box are editable - not the diameter.

I can't seem to create an arc of (say) 65 degrees with a diameter of 50mm - I never see entry boxes with 'width', 'height', 'start' and 'end' displayed at the same time for me to fill in precise values.

Jim Ford

I can't seem to create an arc of (say) 65 degrees with a diameter of 50mm - I never see entry boxes with 'width', 'height', 'start' and 'end' displayed at the same time for me to fill in precise values.

Jim here's what I'd do.

1. Set up some guide lines so you have a 50 mm "box". 2. Select the ellipse tool and draw a circle by holding down control and dragging from corner to corner. 3. Enter the start angle where you like it. (Inkscape denotes the 3 o'clock position as 0° and proceeds to 360° in a clockwise fasion.) 4. Enter an end point equal to the start point plus the desired arc lenght, in this case 65°.

I hope that's fairly straight forward.

Aaron

Like open source illustration? - Visit OpenSourceStyle.blogspot.com for Tutorial, Tips, Projects, and more.

Aaron's suggestion and mine boil down to the same procedure: FIRST draw the whole thing with the right dimensions, and THEN set angles. But, yes, it would be better if one yould the ellipses parameters AFTER drawing... :)

_____________________ Maarten H. van der Velde interaction designer +47 48 16 46 21 mvdv@...2171...

Powel ASA - Norway (Trondheim) Klæbuveien 194, NO-7037 Trondheim Tel: +47 73 80 45 00, Fax: +47 73 80 45 01

-----Original Message----- From: inkscape-user-bounces@lists.sourceforge.net [mailto:inkscape-user-bounces@lists.sourceforge.net] On Behalf Of Johan Vromans Sent: 22. oktober 2007 09:24 To: Inkscape User Community Subject: Re: [Inkscape-user] Drawing short arcs?

"Aaron Elmquist" <ironranger@...155...> writes:

1. Set up some guide lines so you have a 50 mm "box".

Is there a way to exactly place these guide lines? I tried the recipe and ended up with a circle of 49.286 (Yes, I know I can change the dimensions afterwards, rhat's not the problem.)

-- Johan

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Is there a way to exactly place the guide lines?

Double click one.

You could also draw a normal square and then snap to it - check the snap options dialogue, I forget what that kind of snapping is called.

/d

On 10/21/07, Jim Ford <jaford@...2359...> wrote:

I never see entry boxes with 'width', 'height', 'start' and 'end' displayed at the same time for me to fill in precise values.

You can set the width and height when using the Selection tool. Draw your circle, set the angles, switch to the Selection tool, and set the width and height for the diameter.

As Aaron and Maarten said, the easiest way to create the arc is creating first the whole circle, set it's width and height, switch to the ellipse tool, select the circle and there you have the angles boxes to set its start and end values.

Facundo

On 10/22/07, Jim Ford <jaford@...2359...> wrote:

Kurt Hutchinson wrote:

...

On 10/21/07, Jim Ford <jaford@...2359...> wrote:

...

I never see entry boxes with 'width', 'height', 'start' and 'end' displayed at the same time for me to fill in precise values.

You can set the width and height when using the Selection tool. Draw your circle, set the angles, switch to the Selection tool, and set the width and height for the diameter.

The problem is that the 'height' and 'width' is of the enclosing box, which in the case of an arc isn't the diameter (try drawing a short arc and you'll see what I mean.

I've tried drawing a circle of the required diameter and adjusted the arc of the required angle to fit over it, then deleted the circle, but this is a kludge at best.

Thanks for the suggestions so far.

Jim Ford

---

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