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87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
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//
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// Eigen is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 3 of the License, or (at your option) any later version.
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//
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// Alternatively, you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of
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// the License, or (at your option) any later version.
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//
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// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License and a copy of the GNU General Public License along with
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// Eigen. If not, see <http://www.gnu.org/licenses/>.
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#ifndef MANDELBROT_H
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#define MANDELBROT_H
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#include <Eigen/Array>
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#include <QtGui/QApplication>
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#include <QtGui/QWidget>
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#include <QtCore/QThread>
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class MandelbrotWidget;
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class MandelbrotThread : public QThread
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{
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friend class MandelbrotWidget;
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MandelbrotWidget *widget;
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long long total_iter;
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int id, max_iter;
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bool single_precision;
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public:
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MandelbrotThread(MandelbrotWidget *w, int i) : widget(w), id(i) {}
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void run();
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template<typename Real> void render(int img_width, int img_height);
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};
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class MandelbrotWidget : public QWidget
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{
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Q_OBJECT
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friend class MandelbrotThread;
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Eigen::Vector2d center;
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double xradius;
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int size;
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unsigned char *buffer;
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QPoint lastpos;
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int draft;
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MandelbrotThread **threads;
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int threadcount;
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protected:
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void resizeEvent(QResizeEvent *);
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void paintEvent(QPaintEvent *);
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void mousePressEvent(QMouseEvent *event);
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void mouseMoveEvent(QMouseEvent *event);
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public:
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MandelbrotWidget() : QWidget(), center(0,0), xradius(2),
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size(0), buffer(0), draft(16)
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{
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setAutoFillBackground(false);
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threadcount = QThread::idealThreadCount();
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threads = new MandelbrotThread*[threadcount];
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for(int th = 0; th < threadcount; th++) threads[th] = new MandelbrotThread(this, th);
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}
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~MandelbrotWidget()
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{
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if(buffer) delete[]buffer;
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for(int th = 0; th < threadcount; th++) delete threads[th];
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delete[] threads;
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}
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};
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#endif // MANDELBROT_H
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