Posted by Jim Yuzwalk on Jun 05, 2013; 11:43am
URL: https://forum.librecad.org/Dashed-line-scaling-not-working-well-when-using-inches-Rays-appearing-during-Zoom-tp5708217.html

I'm using LibreCAD 2 beta 5

I'm working on a drawing with the 'Current Drawing Preferences' set to inches with scale at 1:1.  The drawing is of a small part, about one inch max dimension.  The part is embedded within a 8.5" x 11" drawing - title block, border etc., as shown in a3.dxf.  Basically I took the a3 template and scaled it to 1:1 for inches such that it would represent an 8.5" x 11" drawing.

The issue I'm seeing is that dashed lines, i.e., hidden lines, are poorly rendered in both screen display and print.  If I zoom in on the part, the dashed lines, 'dashed (small)', look great.  But If looking at the entire sheet, or looking at a print preview, the dashed lines are quite poorly rendered -- they aren't uniformly dashed.

Furthermore, there's a very strange artifact when zooming in and out, from time to time.  Projection Rays are generated originating at the upper left hand corner of the zoomed window and terminating on various points of the drawing.

These ray lines seem to appear once the drawing is zoomed in to a point where some of the upper leftmost portion of the drawing is out of the viewing window.  If I use the vertical scroll bar, while zoomed and rays showing, I can make the rays dissapear once the upper left corner of the drawing is fully within the viewing window.

I can provide the drawing and screen shoots if requested.


Best regards,

Jim