JavaFX on rPi & iOS with RoboVM

[Tom Schindl]

Hi,

I've been working on some samples for my presentation at EclipseCon
Europe and wanted share my findings.

1. rpi (opendjk b113)
---------------------
As a demo i used Gerrit Grunwalds imagerollover [1] which in principle
works great but at a certain point crashes with an exception so
something in the OpenGL implementation there does not work. You should
be able to reproduce yourself by running the code.

2. iOS
------
I've been running on jfx78 backport from about 2 weeks ago. I saw some
commits for iOS but I don't think that matters.

a) Image rollover
I delambdarized Gerrits code to run on JDK6 (which RoboVM is) and while
the animations are smooth (in the simulator and real iPad-Device)
there's a lot of what Steve calls screenscheese. I don't think that
RoboVM is the cause for this.

b) Charts [2]
PieCharts are not working completely there are certain segments in the
pie missing (on the Simulator it is ok, on the device it is broken!),
BarCharts work ok.

x/y translate animations:
animation them e.g. by sliding them in from is lags a lot. I know that
charts are not the easiest components but anyways I think sliding a
chart in and out must be smooth.

fade animation:
lags and is not smooth

It might be that my animation code is not doing the right things [3] but
I doubt that it is that wrong.

I don't know how much Java-Bound this animation code is so RoboVM could
be one cause of the problem although I doubt that because e.g. for the
x/y translate animations the smaller the area I animate the smoother it
gets.

Tom

[1]https://bitbucket.org/hansolo/imagerollover
[2]http://tomsondev.bestsolution.at/2013/10/25/javafx-on-ios-with-the-help-of-robovm/
[3]http://git.eclipse.org/c/efxclipse/org.eclipse.efxclipse.git/tree/bundles/runtime/org.eclipse.fx.ui.mobile/src/org/eclipse/fx/ui/mobile/animations/TransitionDelegate.java