QCAD Bugtracker

  • Status Closed
  • Percent Complete
  • Task Type Bug Report
  • Category QCAD (main)
  • Assigned To
  • Operating System All
  • Severity Low
  • Priority Very Low
  • Reported Version 3.26.0
  • Due in Version Undecided
  • Due Date Undecided
  • Votes 1
    • CVH (05.03.2021)
  • Private
Attached to Project: QCAD Bugtracker
Opened by CVH - 04.03.2021
Last edited by Andrew - 05.03.2021

FS#2196 - Leader: Arrow removed on load if arrow only fits first segment due to being scaled down

This is bugging me for over a year now.
I filed it as a feature request as it is dismissed twice as a possible bug on the forum.
In both cases the advice is to only use Specific Scale 0 for Leaders.
(... and adapt all other dimensions to that)

I am aware that an arrow head has to fit twice on the first leg of a Leader Entity.

The size is set global in the Drawing Preferences under Dimension Settings: ‘Text Height’.
Under Dimension Settings, there is also a global ‘Size scale factor’.
And every dimension entity has a Specific Property called ‘Scale’ that supersedes this global ‘Size scale factor’.

Proof of concept: Dim size 5 and for any regular dimension.
1) Size scale factor 1, Specific Scale 0 » text height & arrow length = 5 units.
2) Size scale factor 2, Specific Scale 0 » text height & arrow length = 10 units.
3) Size scale factor 2, Specific Scale 1 » text height & arrow length = 5 units.
4) Size scale factor 1, Specific Scale 2 » text height & arrow length = 10 units.
5) Size scale factor 10, Specific Scale 0.5 » text height & arrow length = 2.5 units.
6) Size scale factor 99, Specific Scale 0.1 » text height & arrow length = 0.5 units.
→ Obvious is that the ‘Specific Scale’ supersedes the dimensions ‘Size scale factor’.

Those two last Leader arrows (2.5 & 0.5 long) would definitely fit twice on an 8 units long first Leader leg! And they do perfectly while drawing them.

However, the arrow will be reset when the file is saved & loaded.

For case 5 the first leg has to be (2 times 5×10) 100 units or over so an arrow 2.5 long remains on save (=40 times). In the absurd case 6 that would be (2 times 5×99) 990 units or over for an arrow only 0.5 units long (=1980 times).
Verfied and true.

It seems that on save/load:
The Specific Scale is not taken into consideration while evaluating ‘At least twice’.

Apart from that they render fine when first drew.
And reappear when setting the arrow back on again after load.


Closed by  Andrew
05.03.2021 10:24
Reason for closing:  Fixed


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