Screen-Based Linetypes & Lineweight

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drbq
Newbie Member
Posts: 4
Joined: Fri Jul 22, 2022 3:46 am

Screen-Based Linetypes & Lineweight

Post by drbq » Fri Jul 22, 2022 4:04 am

The Screen-Based Linetypes feature makes it easier for me to recognize lines' patterns, but it makes them much thinner. I can adjust for that by increasing their weight, but that makes them too thick when I print. Is there a way to assign different line weights for display and printing? It's possible that this is because I'm using a high-DPI display. I'm also new to QCAD and CAD in general, so I know it could be something very simple that I'm missing.

QCAD Professional 3.27.6.0
MacOS 12.4 (21F79)

Thank you,
David

CVH
Premier Member
Posts: 3364
Joined: Wed Sep 27, 2017 4:17 pm

Re: Screen-Based Linetypes & Lineweight

Post by CVH » Fri Jul 22, 2022 6:02 am

Hi,
Screen-Based Linetypes (NL) are meant to look OK on a display what has a much lower dpi than any printer does.
If we clear this option then QCAD will try to represent the lines in there actual weight given the drawing unit.

For printing QCAD uses the normal Linetypes and weights.
A Lineweight of 0.25 will print 0.25mm thick on paper with a global linetype scale set to 1.

It is thus possible to change the outcome on paper by the drawing global linetype scale setting.

There is no setting that I know of to change the appearance on a display.
I think that it uses a 1 px thick line for the lower Lineweights.
And that it scales the Linetype pattern accordingly.
There is a setting to use full resolution for high resolution displays or not.

So you don't really change the look on your display but you define how it should look on paper. :wink:

Linetype patterns can also be scaled by weight or not.

Regards,
CVH

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