Location texture renderer

[devemux86]

Implement a new separate location renderer using a regular bitmap as marker.

That way users can more easily customize location marker in their applications.

[Longri]

Maybe I can PR my used LocatioLayer.
It's ready for use with BMP for location and use the original circle layer as accuracy indicator

[devemux86]

Sure!

use the original circle layer as accuracy indicator

Do you mean a GL circle shader or a regular circle overlay?

[Longri]

Modified shader without direction

[Longri]

[Longri]

Status: in process

I will simplify the layer a little bit and add some properties for the color, which I coded in my shader.

[devemux86]

Note that should not have any bitmap resources in the library.
Users can set marker bitmap during layer creation (like in mapsforge/mapsforge#1035).

[Longri]

Note that should not have any bitmap resources in the library.

Of course. Only on example

[devemux86]

Implemented via #548.

[devemux86]

Further improvements could be:

• Use simpler SVG read implementation in sample with better scaling
  (i.e. AndroidSvgBitmap and friends are focused on theme svg resources)
• Location marker should tilt following the map movement
• Shaders could need mediump precision because of My location marker is rendered badly/pixeled #207

[Longri]

Location marker should tilt following the map movement

I'll have another look, because in my original implementation, in my app, it worked.

Something must have gone wrong when we make the switch.

[devemux86]

Use simpler SVG read implementation in sample with better scaling
(i.e. AndroidSvgBitmap and friends are focused on theme svg resources)

None of these are necessary, just need to scale the size, I pushed the fix.

[Longri]

Location marker should tilt following the map movement

Okay, I looked in again and I realized that it didn't work for me either. It was just an optical illusion.

Symbols are never tilted.
Although it works with texts/labels.

I think a general property for SymbolItems should be created here with a new issue!?

[devemux86]

SymbolItem already supports optional billboard rendering, can see MarkerOverlayActivity.
I pushed the fix.

[Longri]

Thanks for a broad hint!

But I think is better to use a propertie for that,
so the user can decide.

[devemux86]

If have the location symbol as billboard how does it work?
e.g. with location bearing=0° the arrow should point to North, even with map rotation.
Without billboard that works (1st image), with billboard is always upright on screen (2nd image)

[Longri]

I can't confirm that.

The direction under the Android LocationTextureActivity comes from the GPS. Maybe there's no movement.
It works with my GPS simulator. See Screenshots

[Longri]

btw.: add billboard rendering propertie for LocationTextureRenderer #549