Qt Sensors - Accel Bubble | Qt Sensors 5.13.2

Qt 5.13 | Qt Sensors | Qt Sensors - Accel Bubble

Qt 5.13.2 Reference Documentation

# 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