Android Question DrawBitmapRotated HELP !

[Enthousiastic]

Hello , i want to make a voice volume meter. I've studied a lot the Rotating Needle and all other examples. All that i want is to rotate the vu meter's needle according the db . Now i build the basic of the program just to rotate the needle . As you can see in designer.jpg the needle is rotated wrong .

CAN YOU CORRECT THE CODE PLEASE ? IS CRITICAL FOR ME !


PS : I don't want the rotated needle match exactly in -20 db in volume meter . This i'll fix it later when i make the scale of vu meter . All i want to be rotaded properly and not somewhere in volume meter

Many thanks Enthousiastic !!!!!!!!!!!!!!!!!!

 

[derez]

The solution is much simpler if you use setRotation from View Utilities https://www.b4x.com/android/forum/threads/view-utils.39347/
You put your needle on a view (panel, imageview, label - whatever) and set the angle to rotate it. You can define the pivot point, otherwise it is in the middle of the view.
You can see example of using it in my CircleScale class here https://www.b4x.com/android/forum/threads/class-vertical-horizontal-and-circle-seekbars.19444/

 

[klaus]

I had given you an example, drawing a line, here, have you looked at it ?