Speed of graphic operations

[mhc]

Hi,

I have tried to find out some aspects of the speed of graphic operations.
Please see attached file.
At this time I still have no android device. So I can test B4A only with the emulator.
This small test app should show a small animated graphic which looks like a rising flame.
But it is so slow! ( The same app written in B4ppc, eVB and Delphi shows the behaviour as expected).
My question:
1: Is my program code totally wrong for B4A?
2: Maybe the reason found in the emulator?
3: Could someone test it on a device and give some feedback?

Thanks

mhc

 

[Erel]

The emulator is significantly slower than real device.
It looks much better on a real phone (Nexus One).
Note that you should invalidating the activity is an expensive operation. You should only do it once per timer tick. And you can invalidate a certain rectangle instead of the whole activity.

You should declare the variables. Otherwise they are treated as strings and converted all the time to numbers.

 

[moster67]

I tried it on my HTC HD2 (1gh processor) running Android and sparkles are much faster (changing shapes) compared to the emulator.

Nice!

 

[mhc]

Thanks for the quick replies and testing.
I will try to find out more about the drawing capabilities.

@Erel:
By the way, is it possible to play sounds or wav-files?

regards

mhc

 

[Erel]

By the way, is it possible to play sounds or wav-files?

Sounds were not implemented yet. It will be added eventually.