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Improve offset line algorithm #18048

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qgib opened this issue Jan 29, 2014 · 3 comments
Closed

Improve offset line algorithm #18048

qgib opened this issue Jan 29, 2014 · 3 comments
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Feature Request Symbology Related to vector layer symbology or renderers
Milestone
Version 2.2

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qgib commented Jan 29, 2014

Author Name: Nyall Dawson (@nyalldawson)
Original Redmine Issue: 9456

Redmine category:symbology

The current line offset algorithm used in line symbol layers is prone to extreme jagged spikes and other rendering errors. This could be improved by implementing changes like those in this mapnik pull request:
https://github.com/mapnik/mapnik/pull/1269/files

Or by implementing a similar routine to that used by PostGIS' ST_OffsetCurve function.
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qgib commented Feb 16, 2014 •
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Author Name: Giovanni Manghi (@gioman)

see also #18076

  • fixed_version_id was configured as Version 2.2

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qgib commented Feb 20, 2014

Author Name: Alvaro Huarte (@ahuarte47)

This pull request ( #1205 ) improves the offset of lines using GEOSOffsetCurve if GEOS 3.3 is available.

Results:
!issue_9485-results.JPG!

  • 6837 was configured as issue_9485-results.JPG

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qgib commented Mar 2, 2014

Author Name: Martin Dobias (@wonder-sk)

Fixed in changeset "bb7cd4053a9aa676466ce3ea4212956e2a712537".

  • status_id was changed from Open to Closed

@qgib qgib added Feature Request Symbology Related to vector layer symbology or renderers labels May 24, 2019
@qgib qgib added this to the Version 2.2 milestone May 24, 2019
@qgib qgib closed this as completed May 24, 2019
@qgib qgib mentioned this issue May 25, 2019
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