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NativeSensors source code

by MasDennis on Sep 11th, 2013 12:54 PM

Hi

First of all great job! I received my dev kit last week and I'm very impressed!
I was wondering if the source code for the NativeSensors apk was available somewhere. I'd love to integrate dive support into our 3D engine.
Thanks!

Dennis

MasDennis

Posts: 2

Joined: 11.09.2013

Re: NativeSensors source code

by kwx on Sep 11th, 2013 22:02 PM

FWIW, in my HMDCoaster demo, I used the default Android orientation sensor which merges gyroscope and accelerometer data. This works ok, though its rather aggressive smoothing may make it a bit laggier than Stefan's NativeSensors which does its own sensor fusion.

See http://developer.android.com/guide/topi ... ition.html. Something like this (from native code):

<br />    engine&#46;sensorManager = ASensorManager_getInstance();<br />    engine&#46;accelerometerSensor = ASensorManager_getDefaultSensor(engine&#46;sensorManager,<br />            11 /* SENSOR_TYPE_ROTATION_VECTOR */);<br />   // &#46;&#46;&#46;<br />                    while (ASensorEventQueue_getEvents(engine&#46;sensorEventQueue,<br />                            &amp;event, 1) &gt; 0) {<br />                        engine&#46;rx = event&#46;acceleration&#46;x;<br />                        engine&#46;ry = event&#46;acceleration&#46;y;<br />                        engine&#46;rz = event&#46;acceleration&#46;z;<br />                        engine&#46;rw = sqrt(1&#46;0f - engine&#46;rx*engine&#46;rx -<br />                            engine&#46;ry*engine&#46;ry -engine&#46;rz*engine&#46;rz);<br /><br />  // &#46;&#46;&#46;<br />        /* Undo screen rotation, from getWindowManager()&#46;getDefaultDisplay()&#46;getRotation()*/<br />        glRotatef(eng-&gt;rot * 90&#46;0f, 0&#46;0f, 0&#46;0f, 1&#46;0f);<br /><br />        /* Apply rotation vector&#46; */<br />        float theta = 2&#46;0f * acos(eng-&gt;rw);<br />        float s = sin(theta / 2&#46;0f);<br />        glRotatef(-theta * 180/M_PI, eng-&gt;rx / s, eng-&gt;ry / s, eng-&gt;rz / s);<br /><br />        /* Orientation sensor is relative to a phone lying horizontally&#46; Look forward&#46; */<br />        glRotatef(90&#46;0f, 1&#46;0f, 0&#46;0f, 0&#46;0f);<br />

kwx

Posts: 13

Joined: 19.07.2013

Re: NativeSensors source code

by MasDennis on Sep 12th, 2013 09:18 AM

Thanks for this! I'll give it a try.

MasDennis

Posts: 2

Joined: 11.09.2013

Re: NativeSensors source code

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sasuke2690

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Re: NativeSensors source code

by Peter Parker on Dec 20th, 2023 07:14 AM

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Re: NativeSensors source code

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