Qt Sensors - Accel Bubble

The AccelBubble example demonstrates the Accelerometer QML type.

Overview

Writing a QML application that uses the Accelerometer QML sensors type requires the following steps:

Import the Sensors Declarative module.

import QtSensors 5.0

Add an Accelerometer QML type.

Accelerometer {
    id: accel
    dataRate: 100

Use the ‘active’ property to start the sensor

active:true

Move the bubble according to a factor of the accelerator sensor

onReadingChanged: {
    var newX = (bubble.x + calcRoll(accel.reading.x, accel.reading.y, accel.reading.z) * .1)
    var newY = (bubble.y - calcPitch(accel.reading.x, accel.reading.y, accel.reading.z) * .1)

    if (isNaN(newX) || isNaN(newY))
        return;

    if (newX < 0)
        newX = 0

    if (newX > mainWindow.width - bubble.width)
        newX = mainWindow.width - bubble.width

    if (newY < 18)
        newY = 18

    if (newY > mainWindow.height - bubble.height)
        newY = mainWindow.height - bubble.height

        bubble.x = newX
        bubble.y = newY
}

Example project @ code.qt.io