search

tanweijiu / osmbonuspack

Automatically exported from code.google.com/p/osmbonuspack
0 stars 0 forks source link

KML Track disappears when zooming to zoomlevel 15 and higher #68

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1.Create a MapView
2.Display KML file like in tutorial_4
3.Zoom to zoom level 17 and higher

What is the expected output? What do you see instead?

This is what i see in output-log:

06-10 12:26:30.705  11293-11293/de.example.spessartbiken.app 
I/o*.o*.t*.MapTileProvid*﹕ rescale tile cache from 16 to 17
06-10 12:26:30.925  11293-11293/de.example.spessartbiken.app 
I/o*.o*.t*.MapTileProvid*﹕ Finished rescale in 221ms
06-10 12:26:30.965  11293-11293/de.example.spessartbiken.app 
W/OpenGLRenderer﹕ Path too large to be rendered into a texture
06-10 12:26:30.975  11293-11293/de.example.spessartbiken.app 
W/OpenGLRenderer﹕ Path too large to be rendered into a texture
06-10 12:26:30.985  11293-11293/de.example.spessartbiken.app 
W/OpenGLRenderer﹕ Path too large to be rendered into a texture

What version of the products are you using (Android SDK, osmdroid,
OSMBonusPack)?

I'm using Android Studio 0.59, OsmDroid 4.2 and OsmBonusPack 4.5

Please provide any additional information below.

One solution that worked for me was enforcing software rendering with 
mapView.setLayerType(View.LAYER_TYPE_SOFTWARE, null); as it was recommended in 
another issue.

I attached one KML file where i have this problem. But there are 18 more 
similar files with the same issue.

Original issue reported on code.google.com by dk.appst...@gmail.com on 10 Jun 2014 at 10:35

Attachments:

GoogleCodeExporter commented 9 years ago 
OK. This is equivalent to osmdroid issue 454 
(https://code.google.com/p/osmdroid/issues/detail?id=454). 

There is no "good" solution in osmdroid for it yet. 

So your workaround (disabling HW acceleration at view level) is probably the 
best solution for now. 
An alternative is to target an SDK < 3.0 (no HW acceleration).

Original comment by mathieu....@gmail.com on 10 Jun 2014 at 11:46

GoogleCodeExporter commented 9 years ago 
Well, in fact, there is now a solution for this issue from osmdroid 4.2: the 
"NonAcceleratedOverlay". 

I changed Polyline and Polygon to inherit from it. This means that on an 
SDK>=3.0, rendering will be HW-accelerated, except for Polyline and Polygon. 

The source is commited, and the osmbonuspack_snapshot.jar is available in the 
Downloads. 

You can try (removing mapView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);) 
and see if it solves your issue.

Original comment by mathieu....@gmail.com on 11 Jun 2014 at 8:24

GoogleCodeExporter commented 9 years ago 
So i tried out the osmbonuspack_snapshot.jar and the kml track was shown in all 
zoom states, so it solved this particular problem. 
But loading, panning and zooming the map becomes incredibly slow and it throws 
some of those errors in the log: "E/dalvikvm-heap﹕ Out of memory on a 
262160-byte allocation."

So the workaraound mentioned above is the best solution for me, as it works 
flawlessly and the performance also is very good.

Original comment by dk.appst...@gmail.com on 22 Jun 2014 at 4:28

GoogleCodeExporter commented 9 years ago 
Bad news. I cancel my change. 
This will need further investigation on why it became slow with 
NonAcceleratedOverlay.

Original comment by mathieu....@gmail.com on 23 Jun 2014 at 9:09

GoogleCodeExporter commented 9 years ago 
Issue 16 has been merged into this issue.

Original comment by mathieu....@gmail.com on 25 Jul 2014 at 4:22