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mapsforge / vtm

OpenGL vector map library - running on Android, iOS, Desktop and browser.
GNU Lesser General Public License v3.0
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Support HGT for offline hillshading #1101

Open ztNFny opened 7 months ago

ztNFny commented 7 months ago

Unlike mapsforge vtm currently supports only online-sources for hillshading (e.g. MapilionMvtActivity.java). It'd be nice to have support for HGT format hillshading information to enable offline hillshading as well

VTM does not support currently Hillshading from digital elevation model data like HGT format. That works in Mapsforge with a different engine, processing bitmap images (mapsforge/mapsforge#923).

Originally posted by @devemux86 in https://github.com/mapsforge/vtm/issues/197#issuecomment-422341553

devemux86 commented 7 months ago

It could work with a new offline bitmap tile source, with bitmap tiles generated from the hillshading data. (code exists in Mapsforge)

This can be combined with any existing map source, like when using online hillshading bitmap tile source. (like the online hillshading example)

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