Draw accurate circular arc

I am sure this must be possible but I can't find it as a forum question or see a simple way to do it...
To start with I just want to draw a circular arc!
I am actually trying to illustrate the tracks that would be left by a vehicle making first a 130 deg right and then a 20 deg left turn, so there would be 2 lines with concentric arcs. The actual values for the turns will result from imposing the lines on an aerial photo or plan. Any pointers would be very welcome!

In the best of all worlds, Xara would have an arc tool. But they don't.

1. Create a circle to match the tire tracks.
2. Add an outline and set the fill to none.
3. Convert to Editable Shapes (Arrange menu)
4. Select the circle, then the Shape Tool (F4).
5. Click on the circle at the first place you want to start the arc.
6. On the Infobar, click Break at Points.
7. Repeat this step for where you want to end the arc.
8. Select the portion you are not using and delete.

Quote:

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Originally Posted by gwpriester

In the best of all worlds, Xara would have an arc tool. But they don't.

1. Create a circle to match the tire tracks.
2. Add an outline and set the fill to none.
3. Convert to Editable Shapes (Arrange menu)
4. Select the circle, then the Shape Tool (F4).
5. Click on the circle at the first place you want to start the arc.
6. On the Infobar, click Break at Points.
7. Repeat this step for where you want to end the arc.
8. Select the portion you are not using and delete.

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Gary I personally am having difficulty with this I did it of course but how are you setting fill to "none" I can clear the fill but that is as far as I
can follow your suggestion.




.

larry - the fill tool does not have such a setting, but what gary means is click on 'set no colour' on the colour bar which removes the fill; we all assume things are understood sometimes

@ slast - is this a schematic or realistic... realistic tracks are modified by vehicle inertia/momentum, tyre drag, surface traction....

It really does not matter about the fill as long as the circle has an outline. Once you break at a point, the circle is no longer a circle. It is now a line.

true ;)

Quote:

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Originally Posted by slast

I am sure this must be possible but I can't find it as a forum question or see a simple way to do it...
To start with I just want to draw a circular arc!
I am actually trying to illustrate the tracks that would be left by a vehicle making first a 130 deg right and then a 20 deg left turn, so there would be 2 lines with concentric arcs. The actual values for the turns will result from imposing the lines on an aerial photo or plan. Any pointers would be very welcome!

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What is the steering angle in these curves? This determines the radius.
You also need to supply the wheelbase and width of the vehicle as well as the speed.

I don't know if your XDA has the SmartShape Ring Segment where you can drag to 36.1% (130deg) and 5.6% (20deg) for an inner and an outer arc.

Acorn

that as well ;)

Quote:

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Originally Posted by handrawn

larry - the fill tool does not have such a setting, but what gary means is click on 'set no colour' on the colour bar which removes the fill; we all assume things are understood sometimes

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that is exactly what I did, a big thank-you guys I guess I knew more than I thought.

Quote:

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Originally Posted by gwpriester

It really does not matter about the fill as long as the circle has an outline. Once you break at a point, the circle is no longer a circle. It is now a line.

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Yeah I knew that too'