Bug 435401

Summary:	Wacom Art Pen Rotation half-way unresponsive
Product:	[Applications] krita	Reporter:	ryan <ryancordin>
Component:	Brush engines	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	NOR
Version:	4.4.2
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description ryan 2021-04-05 23:58:54 UTC

SUMMARY
The Wacom Art pen has the ability to change brush orientation by rotating its barrel. In Krita, only half a rotation (180 degrees) is registered, while the other half remains unresponsive. This bug only happens in Krita and on the linux version. Windows version is fine.

STEPS TO REPRODUCE
1. Select the 'Bristles-2_Flat_Rough' brush preset.
2. In 'edit brush settings', change rotation from 'drawing angle' to 'rotation'.
3. Spin the Wacom Art pen on the canvas.

OBSERVED RESULT
Half a rotation of the Art Pen translates as a complete rotation(360 degrees) of brush tip(should be 180 degrees). Any further rotation beyond the 180 degrees results in no change to brush tip rotation.

EXPECTED RESULT
Rotation of art pen correlates to accurate rotation of the brush tip, and is completely responsive at all angles.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Kubuntu 20.04
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8

Comment 1 ryan 2021-04-06 01:27:28 UTC

Disabling the option 'share curve across all settings' in the brush settings enables full and accurate rotation for the Art Pen.