accelbubble.qml Example File

accelbubble/accelbubble.qml

 
/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtSensors module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/
import QtQuick 2.1 import QtQuick.Controls 1.0 import QtSensors 5.0 ApplicationWindow { title: "Accelerate Bubble" id: mainWindow width: 320 height: 480 visible: true readonly property double radians_to_degrees: 180 / Math.PI Accelerometer { id: accel dataRate: 100 active:true 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 } } function calcPitch(x,y,z) { return -Math.atan2(y, Math.sqrt(x * x + z * z)) * mainWindow.radians_to_degrees; } function calcRoll(x,y,z) { return -Math.atan2(x, Math.sqrt(y * y + z * z)) * mainWindow.radians_to_degrees; } Image { id: bubble source: "content/Bluebubble.svg" smooth: true property real centerX: mainWindow.width / 2 property real centerY: mainWindow.height / 2 property real bubbleCenter: bubble.width / 2 x: centerX - bubbleCenter y: centerY - bubbleCenter Behavior on y { SmoothedAnimation { easing.type: Easing.Linear duration: 100 } } Behavior on x { SmoothedAnimation { easing.type: Easing.Linear duration: 100 } } } }