Squashed 'third_party/eigen/' content from commit 61d72f6
Change-Id: Iccc90fa0b55ab44037f018046d2fcffd90d9d025
git-subtree-dir: third_party/eigen
git-subtree-split: 61d72f6383cfa842868c53e30e087b0258177257
diff --git a/demos/mandelbrot/mandelbrot.h b/demos/mandelbrot/mandelbrot.h
new file mode 100644
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--- /dev/null
+++ b/demos/mandelbrot/mandelbrot.h
@@ -0,0 +1,71 @@
+// 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