Cliffs / Line direction

[Klaus-Tockloth]

Describe the bug

The line direction is relevant for the representation of cliffs. Often cliffs are represented by lines with small arrows. The arrows point in the direction of the cliff. This is a thoroughly relevant information. The two screenshots illustrate this:

QMapShack (incorrect line):

Basecamp (correct line):

What have you done to circle down the problem?

To Reproduce

Load Freizeitkarte-Deutschland:
https://www.freizeitkarte-osm.de/garmin/de/deutschland.html

Expected behavior

See screenshot from BaseCamp above.

Screenshots

Attachments

Tracebacks

Desktop

• OS: macOS 14.1
• QMapShack Version: 1.17.0

Additional context

Screenshot from OpenStreetMap:

https://www.openstreetmap.org/#map=16/47.4315/11.0193

[frankystone]

Duplicate of #511

[tumic0]

You may use GPXSee if you want an OpenSource Basecamp alternative that renders the cliffs (and IMG maps generally in a much better way than QMapShack does) the same way like Basecamp does, but you will probably never get 100% results as there are mkgmap/cgpsmapper produced maps that have the wrong direction and even some Garmin units (or at least FW versions) that render the maps in the opposite way to Basecamp.

See tumic0/GPXSee#318 for more details.