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mandelbrot.h
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Fri, Feb 14, 11:26

mandelbrot.h
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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008 Benoit Jacob <jacob.benoit.1@gmail.com>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef MANDELBROT_H
#define MANDELBROT_H
#include <Eigen/Core>
#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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