get Sensor Coordinates - Android Hardware

Android examples for Hardware:Sensor

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Description

get Sensor Coordinates

Demo Code

/*/*  w  w  w  . j a v  a2s . c o  m*/
 * Copyright 2014 Randomly Typing LLC
 *
 * 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.java2s;

import android.graphics.Matrix;

import android.graphics.Rect;

public class Main {
    public static void getSensorCoordinates(float[] coordinates,
            Rect viewCoordinatesRange, int displayOrientation,
            boolean frontFacing) {
        final Matrix matrix = new Matrix();
        matrix.setTranslate(-viewCoordinatesRange.left,
                -viewCoordinatesRange.top);
        matrix.postScale(frontFacing ? -1 : 1, 1);
        matrix.postScale(2000f / viewCoordinatesRange.width(),
                2000f / viewCoordinatesRange.height());
        matrix.postTranslate(-1000f, -1000f);
        matrix.postRotate(-displayOrientation);
        matrix.mapPoints(coordinates);
    }
}

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