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Diffstat (limited to 'src/com/android/gallery3d/app/EyePosition.java')
-rw-r--r--src/com/android/gallery3d/app/EyePosition.java226
1 files changed, 0 insertions, 226 deletions
diff --git a/src/com/android/gallery3d/app/EyePosition.java b/src/com/android/gallery3d/app/EyePosition.java
deleted file mode 100644
index d99d97b0e..000000000
--- a/src/com/android/gallery3d/app/EyePosition.java
+++ /dev/null
@@ -1,226 +0,0 @@
-/*
- * Copyright (C) 2010 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.gallery3d.app;
-
-import android.content.Context;
-import android.hardware.Sensor;
-import android.hardware.SensorEvent;
-import android.hardware.SensorEventListener;
-import android.hardware.SensorManager;
-import android.os.SystemClock;
-import android.util.FloatMath;
-import android.view.Display;
-import android.view.Surface;
-import android.view.WindowManager;
-
-import com.android.gallery3d.common.Utils;
-import com.android.gallery3d.util.GalleryUtils;
-
-public class EyePosition {
- @SuppressWarnings("unused")
- private static final String TAG = "EyePosition";
-
- public interface EyePositionListener {
- public void onEyePositionChanged(float x, float y, float z);
- }
-
- private static final float GYROSCOPE_THRESHOLD = 0.15f;
- private static final float GYROSCOPE_LIMIT = 10f;
- private static final int GYROSCOPE_SETTLE_DOWN = 15;
- private static final float GYROSCOPE_RESTORE_FACTOR = 0.995f;
-
- private static final float USER_ANGEL = (float) Math.toRadians(10);
- private static final float USER_ANGEL_COS = FloatMath.cos(USER_ANGEL);
- private static final float USER_ANGEL_SIN = FloatMath.sin(USER_ANGEL);
- private static final float MAX_VIEW_RANGE = (float) 0.5;
- private static final int NOT_STARTED = -1;
-
- private static final float USER_DISTANCE_METER = 0.3f;
-
- private Context mContext;
- private EyePositionListener mListener;
- private Display mDisplay;
- // The eyes' position of the user, the origin is at the center of the
- // device and the unit is in pixels.
- private float mX;
- private float mY;
- private float mZ;
-
- private final float mUserDistance; // in pixel
- private final float mLimit;
- private long mStartTime = NOT_STARTED;
- private Sensor mSensor;
- private PositionListener mPositionListener = new PositionListener();
-
- private int mGyroscopeCountdown = 0;
-
- public EyePosition(Context context, EyePositionListener listener) {
- mContext = context;
- mListener = listener;
- mUserDistance = GalleryUtils.meterToPixel(USER_DISTANCE_METER);
- mLimit = mUserDistance * MAX_VIEW_RANGE;
-
- WindowManager wManager = (WindowManager) mContext
- .getSystemService(Context.WINDOW_SERVICE);
- mDisplay = wManager.getDefaultDisplay();
-
- // The 3D effect where the photo albums fan out in 3D based on angle
- // of device tilt is currently disabled.
-/*
- SensorManager sManager = (SensorManager) mContext
- .getSystemService(Context.SENSOR_SERVICE);
- mSensor = sManager.getDefaultSensor(Sensor.TYPE_GYROSCOPE);
- if (mSensor == null) {
- Log.w(TAG, "no gyroscope, use accelerometer instead");
- mSensor = sManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
- }
- if (mSensor == null) {
- Log.w(TAG, "no sensor available");
- }
-*/
- }
-
- public void resetPosition() {
- mStartTime = NOT_STARTED;
- mX = mY = 0;
- mZ = -mUserDistance;
- mListener.onEyePositionChanged(mX, mY, mZ);
- }
-
- /*
- * We assume the user is at the following position
- *
- * /|\ user's eye
- * | /
- * -G(gravity) | /
- * |_/
- * / |/_____\ -Y (-y direction of device)
- * user angel
- */
- private void onAccelerometerChanged(float gx, float gy, float gz) {
-
- float x = gx, y = gy, z = gz;
-
- switch (mDisplay.getRotation()) {
- case Surface.ROTATION_90: x = -gy; y= gx; break;
- case Surface.ROTATION_180: x = -gx; y = -gy; break;
- case Surface.ROTATION_270: x = gy; y = -gx; break;
- }
-
- float temp = x * x + y * y + z * z;
- float t = -y /temp;
-
- float tx = t * x;
- float ty = -1 + t * y;
- float tz = t * z;
-
- float length = FloatMath.sqrt(tx * tx + ty * ty + tz * tz);
- float glength = FloatMath.sqrt(temp);
-
- mX = Utils.clamp((x * USER_ANGEL_COS / glength
- + tx * USER_ANGEL_SIN / length) * mUserDistance,
- -mLimit, mLimit);
- mY = -Utils.clamp((y * USER_ANGEL_COS / glength
- + ty * USER_ANGEL_SIN / length) * mUserDistance,
- -mLimit, mLimit);
- mZ = -FloatMath.sqrt(
- mUserDistance * mUserDistance - mX * mX - mY * mY);
- mListener.onEyePositionChanged(mX, mY, mZ);
- }
-
- private void onGyroscopeChanged(float gx, float gy, float gz) {
- long now = SystemClock.elapsedRealtime();
- float distance = (gx > 0 ? gx : -gx) + (gy > 0 ? gy : - gy);
- if (distance < GYROSCOPE_THRESHOLD
- || distance > GYROSCOPE_LIMIT || mGyroscopeCountdown > 0) {
- --mGyroscopeCountdown;
- mStartTime = now;
- float limit = mUserDistance / 20f;
- if (mX > limit || mX < -limit || mY > limit || mY < -limit) {
- mX *= GYROSCOPE_RESTORE_FACTOR;
- mY *= GYROSCOPE_RESTORE_FACTOR;
- mZ = (float) -Math.sqrt(
- mUserDistance * mUserDistance - mX * mX - mY * mY);
- mListener.onEyePositionChanged(mX, mY, mZ);
- }
- return;
- }
-
- float t = (now - mStartTime) / 1000f * mUserDistance * (-mZ);
- mStartTime = now;
-
- float x = -gy, y = -gx;
- switch (mDisplay.getRotation()) {
- case Surface.ROTATION_90: x = -gx; y= gy; break;
- case Surface.ROTATION_180: x = gy; y = gx; break;
- case Surface.ROTATION_270: x = gx; y = -gy; break;
- }
-
- mX = Utils.clamp((float) (mX + x * t / Math.hypot(mZ, mX)),
- -mLimit, mLimit) * GYROSCOPE_RESTORE_FACTOR;
- mY = Utils.clamp((float) (mY + y * t / Math.hypot(mZ, mY)),
- -mLimit, mLimit) * GYROSCOPE_RESTORE_FACTOR;
-
- mZ = -FloatMath.sqrt(
- mUserDistance * mUserDistance - mX * mX - mY * mY);
- mListener.onEyePositionChanged(mX, mY, mZ);
- }
-
- private class PositionListener implements SensorEventListener {
- @Override
- public void onAccuracyChanged(Sensor sensor, int accuracy) {
- }
-
- @Override
- public void onSensorChanged(SensorEvent event) {
- switch (event.sensor.getType()) {
- case Sensor.TYPE_GYROSCOPE: {
- onGyroscopeChanged(
- event.values[0], event.values[1], event.values[2]);
- break;
- }
- case Sensor.TYPE_ACCELEROMETER: {
- onAccelerometerChanged(
- event.values[0], event.values[1], event.values[2]);
- }
- }
- }
- }
-
- public void pause() {
- if (mSensor != null) {
- SensorManager sManager = (SensorManager) mContext
- .getSystemService(Context.SENSOR_SERVICE);
- sManager.unregisterListener(mPositionListener);
- }
- }
-
- public void resume() {
- if (mSensor != null) {
- SensorManager sManager = (SensorManager) mContext
- .getSystemService(Context.SENSOR_SERVICE);
- sManager.registerListener(mPositionListener,
- mSensor, SensorManager.SENSOR_DELAY_GAME);
- }
-
- mStartTime = NOT_STARTED;
- mGyroscopeCountdown = GYROSCOPE_SETTLE_DOWN;
- mX = mY = 0;
- mZ = -mUserDistance;
- mListener.onEyePositionChanged(mX, mY, mZ);
- }
-}
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