How to get straight lines?

[Digital-Seed]

Hello all.
I am working on my second scene, old cottage on the moors.
I am using watercolour in the main but also with technical pen for the hard edges of the building.
I am really struggling to get nice straight lines with the technical pen.
Is there a tool or setting that will assist me in accomplishing this?
I am using ArtRage iOS.
Cheers :)

[Enug]

Hi there!
On the desktop version, you hold down the Ctrl key and pull away with the pen in the direction you want the line.
I don't know if that works in your version.:confused:

[markw]

Dare I suggest you could perhaps actually use a small plastic ruler to guide your pen:rolleyes:

[Digital-Seed]

Hi there!
On the desktop version, you hold down the Ctrl key and pull away with the pen in the direction you want the line.
I don't know if that works in your version.:confused:

Many thanks, June.
I don’t think this will work on iPad.

[Digital-Seed]

Dare I suggest you could perhaps actually use a small plastic ruler to guide your pen:rolleyes:
Haha, exactly what I was considering :)
I did manage it in the end. I exported the image to Sketchbook iOS. The app has multiple tools to help with perspective.
I then imported the image back into ArtRage.
I think ArtRage iOS could really do with a ruler tool, from my limited time with the app this feature is the only thing missing.