Bug report #4717: Rotation affects offset direction - QGIS Application - QGIS Issue Tracking

Bug report #4717

Rotation affects offset direction

Added by Paolo Cavallini almost 13 years ago. Updated over 6 years ago.

Status:	Closed
Priority:	Low
Assignee:	-
Category:	Symbology
Affected QGIS version:	master	Regression?:	No
Operating System:		Easy fix?:	No
Pull Request or Patch supplied:	Yes	Resolution:	wontfix
Crashes QGIS or corrupts data:	No	Copied to github as #:	14598

Description

When a rotation is applied to a symbol, the offset is no longer orthogonal, but along rotated axes. Keeping it orthogonal seems a more sound choice to me.

4717_master.diff - Patch for fix. (2.07 KB) JD -, 2012-01-16 09:43 AM

History

#1 Updated by JD - almost 13 years ago

File 4717_master.diff added

Fixed by removing _rotatedOffset() function which was applying the rotation value to the symbol's centre point. Patch attached.

Also fixed default arrow symbol which wasn't symmetrical.

#2 Updated by Giovanni Manghi almost 13 years ago

Pull Request or Patch supplied changed from No to Yes

#3 Updated by Marco Hugentobler almost 13 years ago

Assignee set to Martin Dobias

#4 Updated by Martin Dobias almost 13 years ago

Please describe me your use case. For me the current handling seems correct: imagine that you have a symbol composed of several layers, some of them having an offset. When I start rotating the whole symbol, the offset direction must be rotated too - otherwise the symbol appearance would break. Or do you mean something else?