47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
#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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#ifdef REAL
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typedef REAL real;
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#else
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typedef float real;
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#endif
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enum { packetSize = Eigen::ei_packet_traits<real>::size }; // number of reals in a packet
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typedef Eigen::Matrix<real, packetSize, 1> packet; // wrap a packet as a vector
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typedef Eigen::Matrix<real, 2, 1> vector2; // really just a complex number, but we're here to demo Eigen !
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const int iter = 32; // the maximum number of iterations done per pixel. Must be a multiple of 4.
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class MandelbrotWidget : public QWidget
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{
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Q_OBJECT
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vector2 center;
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real xradius;
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int size;
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unsigned char *buffer;
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QPoint lastpos;
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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(real(0),real(0)), xradius(2),
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size(0), buffer(0)
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{
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setAutoFillBackground(false);
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setWindowTitle(QString("Mandelbrot/Eigen, sizeof(real)=")+QString::number(sizeof(real))
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+", sizeof(packet)="+QString::number(sizeof(packet)));
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}
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~MandelbrotWidget() { if(buffer) delete[]buffer; }
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};
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#endif // MANDELBROT_H
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