QCAD offers different viewing modes for the graphics view:
This means that none of the viewing options is turned on.
In this mode, line weights are shown in drawing units. A 1mm thick line is 1mm thick in drawing units. Zooming in makes lines appear thicker on screen.
All line types are displayed with dashes and spacings in drawing units. A 2mm dash is shown as 2mm in drawing units. Zooming in makes dashes and spaces appear longer on screen.
View > Screen-based Linetypes
In this mode, line types are rendered in pixels, not drawing units.
Line weights are shown in pixels. A 1mm thick line is several pixels thick and appears approximately 1mm thick on screen. Zooming in has no effect on the line thickness on screen.
Dashed lines are rendered in pixels. Zooming in has no effect on the length of dashes and spaces on screen.
Complex line types (with symbols, text, etc) are displayed as dashed lines in this mode.
View > Draft Mode
This mode is optimized for best performance. No line weights or line patterns are shown.
Anti-aliasing is a technique to minimize stair like patterns of vector graphics displayed on a pixel based device (https://en.wikipedia.org/wiki/Spatial_anti-aliasing). Lines and arc appear smoother when anti-aliasing is switched on at the expense of performance.
Tips and tricks you want to share with other users. Tutorials, user submitted documentation, etc.
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