0003623: "Building US" unit system rounding issue (e.g. 1' 12" vs. 2')

ID	Project	Category	View Status	Date Submitted	Last Update

0003623	TechDraw	Bug	public	2018-10-04 18:18	2018-10-23 11:33

Reporter	chapatt	Assigned To	wandererfan
Priority	normal	Severity	minor	Reproducibility	sometimes
Status	closed	Resolution	fixed
Product Version	0.17
Target Version	0.18	Fixed in Version	0.18

Summary	0003623: "Building US" unit system rounding issue (e.g. 1' 12" vs. 2')
Description	Techdraw often shows dimensions of a length in even feet, n, as (n-1)' 12" instead of n'. It seems to be random when it does this. See attached screenshot and example file of a sketch and a drawing of it.
Steps To Reproduce	In User Preferences, set Units to Building US. In the Sketcher workbench, create a sketch and draw some geometry and constrain parts with dimensions of integer multiples of feet, e.g. 3', 10', etc. In the TechDraw workbench, create a new drawing, click the Insert multiple views... button and create a view for the sketch with a perspective perpendicular to it so it appears as it did when editing the sketch. Add dimensions to some of the same geometry as you dimensioned in Sketcher
Additional Information	OS: Windows 10 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.17.13541 (Git) Build Type: Release Branch: releases/FreeCAD-0-17 Hash: 9948ee4f1570df9216862a79705afb367b2c6ffb Python version: 2.7.14 Qt version: 4.8.7 Coin version: 4.0.0a OCC version: 7.2.0 Locale: English/UnitedStates (en_US)
Tags	units

FreeCAD Information

chapatt 2018-10-04 18:18 reporter	techdraw_dimension_bug.FCStd (12,342 bytes) techdraw_dimension_bug.png (6,272 bytes) techdraw_dimension_bug.png (6,272 bytes)

chapatt 2018-10-04 18:23 reporter ~0011923	The example file uses this drawing template. us-letter_landscape_plain.svg (1,624 bytes) us-letter_landscape_plain.svg (1,624 bytes)

wandererfan 2018-10-05 12:35 manager ~0011927	weird. Only some dimensions are affected. This only happens with "use system decimals" true. With "use alt decimals", the dimvalues are all 0.0 and no units appear.

wandererfan 2018-10-05 13:19 manager ~0011931	This seems to be fixed in v0.18? Same file in 17 shows 10' 12", in 18 shows 11'. Changes in Units subsystem? There is a problem with ft/in measurements in TD if "use alt decimals" is ticked. Measurements come out as 0 - issue with formatSpec for 1 value, but 2 values in input??

chapatt 2018-10-05 17:55 reporter ~0011932	Yes, I've reproduced everything you've observed. I think 0.18 solves this issue. Thank you.

wandererfan 2018-10-06 12:53 manager ~0011943	Let's just leave this ticket here to remind me to fix the 0.0 display when AltDecimals is true.

wmayer 2018-10-11 20:08 administrator ~0012005	https://github.com/FreeCAD/FreeCAD/commit/f6e9faa62c45a9fc8a9f977235abed139c31ab9a

Date Modified	Username	Field	Change
2018-10-04 18:18	chapatt	New Issue
2018-10-04 18:18	chapatt	File Added: techdraw_dimension_bug.FCStd
2018-10-04 18:18	chapatt	File Added: techdraw_dimension_bug.png
2018-10-04 18:23	chapatt	File Added: us-letter_landscape_plain.svg
2018-10-04 18:23	chapatt	Note Added: 0011923
2018-10-05 12:35	wandererfan	Note Added: 0011927
2018-10-05 12:37	wandererfan	Assigned To	=> wandererfan
2018-10-05 12:37	wandererfan	Status	new => confirmed
2018-10-05 12:37	wandererfan	Target Version	=> 0.18
2018-10-05 12:37	wandererfan	Steps to Reproduce Updated
2018-10-05 12:37	wandererfan	Additional Information Updated
2018-10-05 13:19	wandererfan	Note Added: 0011931
2018-10-05 17:55	chapatt	Note Added: 0011932
2018-10-06 12:53	wandererfan	Note Added: 0011943
2018-10-11 20:08	wmayer	Status	confirmed => closed
2018-10-11 20:08	wmayer	Resolution	open => fixed
2018-10-11 20:08	wmayer	Fixed in Version	=> 0.18
2018-10-11 20:08	wmayer	Note Added: 0012005
2018-10-23 11:33	Kunda1	Tag Attached: units