diff options
Diffstat (limited to 'examples/dbus/remotecontrolledcar/car/car.cpp')
| -rw-r--r-- | examples/dbus/remotecontrolledcar/car/car.cpp | 79 |
1 files changed, 25 insertions, 54 deletions
diff --git a/examples/dbus/remotecontrolledcar/car/car.cpp b/examples/dbus/remotecontrolledcar/car/car.cpp index 2de4e6447a..0920658281 100644 --- a/examples/dbus/remotecontrolledcar/car/car.cpp +++ b/examples/dbus/remotecontrolledcar/car/car.cpp @@ -1,67 +1,19 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples 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." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause #include "car.h" #include <QtWidgets/QtWidgets> -#include <qmath.h> +#include <cmath> QRectF Car::boundingRect() const { return QRectF(-35, -81, 70, 115); } -Car::Car() : color(Qt::green), wheelsAngle(0), speed(0) +Car::Car() { startTimer(1000 / 33); - setFlag(QGraphicsItem::ItemIsMovable, true); - setFlag(QGraphicsItem::ItemIsFocusable, true); + setFlags(ItemIsMovable | ItemIsFocusable); } void Car::accelerate() @@ -134,12 +86,31 @@ void Car::timerEvent(QTimerEvent *event) const qreal axelDistance = 54; qreal wheelsAngleRads = qDegreesToRadians(wheelsAngle); - qreal turnDistance = ::cos(wheelsAngleRads) * axelDistance * 2; + qreal turnDistance = std::cos(wheelsAngleRads) * axelDistance * 2; qreal turnRateRads = wheelsAngleRads / turnDistance; // rough estimate qreal turnRate = qRadiansToDegrees(turnRateRads); qreal rotation = speed * turnRate; setTransform(QTransform().rotate(rotation), true); setTransform(QTransform::fromTranslate(0, -speed), true); + + if (!scene()->views().isEmpty()) { + QRect viewRect = scene()->views().at(0)->sceneRect().toRect(); + QTransform fx = transform(); + qreal dx = fx.dx(); + qreal dy = fx.dy(); + while (dx < viewRect.left() - 10) + dx += viewRect.width(); + while (dy < viewRect.top() - 10) + dy += viewRect.height(); + while (dx > viewRect.right() + 10) + dx -= viewRect.width(); + while (dy > viewRect.bottom() + 10) + dy -= viewRect.width(); + setTransform(QTransform(fx.m11(), fx.m12(), fx.m13(), + fx.m21(), fx.m22(), fx.m23(), + dx, dy, fx.m33())); + } + update(); } |