0e69349f6f
The example refines the image by running a number of passes with increasing number of iterations, which is not really visible to the user. Set an informational text string on the generated image which provides this information along with the elapsed time. The idea is to do the same to the corresponding Qt for Python example to have some sort of speed comparison for number crunching. Add a command line option for the number of passes. Make the window a bit larger to accommodate the information. Change-Id: I2afc1009ab53b580123d82a6aa645d9ffaa63ea2 Reviewed-by: Paul Wicking <paul.wicking@qt.io>
96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2021 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Software or, alternatively, in accordance with the terms contained in
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "mandelbrotwidget.h"
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#include <QApplication>
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#include <QScreen>
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#include <QCommandLineParser>
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#include <QCommandLineOption>
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#include <QDebug>
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#include <QRect>
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//! [0]
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int main(int argc, char *argv[])
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{
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QApplication app(argc, argv);
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QCommandLineParser parser;
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parser.setApplicationDescription("Qt Mandelbrot Example");
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parser.addHelpOption();
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parser.addVersionOption();
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QCommandLineOption passesOption("passes", "Number of passes (1-8)", "passes");
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parser.addOption(passesOption);
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parser.process(app);
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if (parser.isSet(passesOption)) {
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const auto passesStr = parser.value(passesOption);
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bool ok;
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const int passes = passesStr.toInt(&ok);
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if (!ok || passes < 1 || passes > 8) {
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qWarning() << "Invalid value:" << passesStr;
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return -1;
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}
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RenderThread::setNumPasses(passes);
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}
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MandelbrotWidget widget;
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const auto geometry = widget.screen()->availableGeometry();
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widget.resize((2 * geometry.size()) / 3);
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const auto pos = (geometry.size() - widget.size()) / 2;
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widget.move(geometry.topLeft() + QPoint(pos.width(), pos.height()));
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widget.show();
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return app.exec();
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}
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//! [0]
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