QCAD Bugtracker

  • Status Assigned
  • Percent Complete
    0%
  • Task Type Suggestion
  • Category QCAD (main)
  • Assigned To
    Andrew
  • Operating System macOS Sierra (10.12)
  • Severity Low
  • Priority Very Low
  • Reported Version 3.24.3
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: QCAD Bugtracker
Opened by Jim Steed - 18.05.2020
Last edited by Jim Steed - 18.05.2020

FS#2075 - Draw order bug after insert bit map

First post, so please excuse if I missed some forum rules etc...

I insert bit maps and trace over them to create DXF files for laser cutting burnout templates. If the edge of the bit map is coincident with a line I have drawn, it is not possible to select the line for offsetting, trimming etc. This is regardless of the draw order or handle number. It seems to happen most if the edge of the image and line are coincident with the X or Y origin. I also use fairly fat lines to make it easy to see. My default line width is 1mm. Not sure if that affects selection or not, but fatter lines don’t help the issue at hand.

Steps to reproduce...
insert bitmap at 0,0
draw horizontal and vertical lines starting at 0,0. (my lines are usually longer than the edges of the bitmap.
try to select one of the lines for offsetting. (Select the line in the area of the bitmap. There is no problem selecting the line where it extends past the edge of the bitmap.)

It does not matter if I insert the bitmap first and then draw lines, or draw lines first, insert bitmap and then change the draw order so the lines are on top. It is also not consistent on which axis is affected. It is usually both X & Y, but sometimes just one or the other.

Workaround is select the bitmap, then move it by 0.001 in any direction. Now the edges are no longer coincident and you can select your lines. The alternate workaround is to insert the image on another layer and then turn that layer off when you need to select a line on the edge of the bitmap.

Admin
Andrew commented on 18.05.2020 06:42

Not a bug. There is no way for QCAD to “know” which entity you mean when clicking on overlapping or congruent entities. Draw order or entity handle are unrelated to this problem.
One way to solve this is by using Alt-Click to choose by context menu.

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