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2011-03-24T20:35:12.573
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2011-03-24T20:55:12.883
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By coding other things for a while, I eventually reached a point where I was trying to separate the rendering, simulation, and input. Because of that I have come up with the following solution that works for me. I haven't tested it rigorously, but it appears to do what I want <del>(ignoring camera roll)</del>. On the android part of the program, I needed to set the orientation to landscape mode: <pre><code><activity android:name=".MySuperAwesomeApplication" android:label="@string/app_name" android:screenOrientation="landscape"> > </code></pre> I created a player class to store yaw, pitch, roll, and position <pre><code>public class Player { public final Vector3 position = new Vector3(0,1.5f,0); /** Angle left or right of the vertical */ public float yaw = 0.0f; /** Angle above or below the horizon */ public float pitch = 0.0f; /** Angle about the direction as defined by yaw and pitch */ public float roll = 0.0f; } </code></pre> And then when I update the player based on input I do the following: <pre><code>player.yaw = -Gdx.input.getAzimuth(); player.pitch = -Gdx.input.getRoll()-90; player.roll = -Gdx.input.getPitch(); </code></pre> Note that pitch maps to input.roll and roll maps to input.pitch. Not sure why, but it works for me. Finally update the camera: <pre><code>camera.direction.x = 0; camera.direction.y = 0; camera.direction.z = 1; camera.up.x = 0; camera.up.y = 1; camera.up.z = 0; camera.position.x = 0; camera.position.y = 0; camera.position.z = 0; camera.update(); // The world up vector is <0,1,0> camera.rotate(player.yaw,0,1,0); Vector3 pivot = camera.direction.cpy().crs(camera.up); camera.rotate(player.pitch, pivot.x,pivot.y,pivot.z); camera.rotate(player.roll, camera.direction.x, camera.direction.y, camera.direction.z); camera.translate(player.position.x, player.position.y, player.position.z); camera.update(); </code></pre> EDIT: added camera roll to the code. For me and my Droid 2, roll appears to only have values in [-90,90] such that if you rotate past -90 or 90 the values start changing back towards 0.
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1. POHow do I use the Android compass orientation to aim an opengl camera?
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