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