OTrunk sensor interface integrated into Geogebra

[Stephen Bannasch]

Michael Borcherds, the lead developer of Geogebra (http://www.geogebra.org) has a rough working integration of Geogebra andour Java sensor-native probeware interface code along with the OTrunk framework and sensor projects.

Here's a jnlp which exercises this new functionality with a Vernier GoLink temperature probe:

  http://www.geogebra.org/webstart/test-usb/ggbtest-usb.jnlp

If you plugin a Vernier goLink with a temperature probe, and click the "Start Logging" button data will be collected.Right now however to actually see the graph you have to right-click with nothing selected and select the option "Show AllObjects" -- this is what it might look like:

The application is Java but the page above is also running a JavaScri-t context with this global JavaScript

  function ggbOnInit() {}

  function logger(value) {

    var d = value * 1;

    ggbApplet.debug("XXX"+d);

    var a = ggbApplet.getValue("a");

    var step = ggbApplet.getValue("step");

    ggbApplet.evalCommand("("+a+","+d+")");

     ggbApplet.setValue("a", a+step);

  }

Here's the script for the "Start Logging" button:

  ggbApplet.registerLoggerListener("logger");
  ggbApplet.setValue("a",0);

And the "Stop Logging" button:

  ggbApplet.unregisterLoggerListener("logger");

They are calling Java methods in ScriptManager.java:

https://github.com/concord-consortium/geogebra/blob/master/geogebra/geogebra/plugin/ScriptManager.java#L309

Here's the commit integrating the CC code:

https://github.com/concord-consortium/geogebra/commit/5b42b74460d626f453ad7cd13308dc6213c8e1ce