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How to make arrows bigger ?

When I draw a arrow on the Demo app, the arrows is too small. 
How can make arrows to a bigger one ? 


image

 


Best Answer

Dear Gene,


It looks like advertised dpi does not match actual dpi on your device. 

What is your device ? Which version of Android do you use ?


A bad dpi will lead to bad recognition results, so you should set the correct dpi.


To find out the actual dpi of a screen you must measure the screen size :


xdpi = 25.4 * (screen width in pixels) / (screen width in mm)
ydpi = 25.4 * (screen height in pixels) / (screen height in mm)


Regards,


Maël

4 CommentsSorted by Oldest First

Dear Gene,


It looks like the dpi resolution is incorrect.

Can you tell me which resolution you send to the renderer ?


Regards,


Maël

I got the device dpi by "displayMetrics = context.getResources().getDisplayMetrics();" as follows

displayMetrics.xdpi=38.0,displayMetrics.ydpi=38.0

displayMetrics.widthPixels=1920,displayMetrics.heightPixels=1080


I don't know why the devices dpi is so small. 

However, can I improve it with a bigger arrows? Or does have any way to get a bigger arrows? 

Thanks.

Answer

Dear Gene,


It looks like advertised dpi does not match actual dpi on your device. 

What is your device ? Which version of Android do you use ?


A bad dpi will lead to bad recognition results, so you should set the correct dpi.


To find out the actual dpi of a screen you must measure the screen size :


xdpi = 25.4 * (screen width in pixels) / (screen width in mm)
ydpi = 25.4 * (screen height in pixels) / (screen height in mm)


Regards,


Maël

Dear Maël ,

Thanks for your quickly replay.

I just set dpi an fixed value 160 with screen resolution in 1920 x 1080 pixels.

It's look like bigger.

int _fixedDPI = 160;
engine.createRenderer(_fixedDPI, _fixedDPI, this);