1 files changed, 54 insertions, 0 deletions
diff --git a/tests/manual/galaxy/star.cpp b/tests/manual/galaxy/star.cpp
new file mode 100644
index 00000000..3a7db28a
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+++ b/tests/manual/galaxy/star.cpp
@@ -0,0 +1,54 @@
+/******************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Data Visualization module.
+**
+** $QT_BEGIN_LICENSE:COMM$
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** $QT_END_LICENSE$
+**
+******************************************************************************/
+
+#include "star.h"
+
+#include <QtCore/qmath.h>
+
+static const double DEG_TO_RAD = M_PI / 180.0;
+
+Star::Star()
+    : m_theta(0),
+      m_a(0),
+      m_b(0),
+      m_center(QVector2D(0.0f, 0.0f))
+{
+}
+
+const void Star::calcXY()
+{
+    qreal &a = m_a;
+    qreal &b = m_b;
+    qreal &theta = m_theta;
+    const QVector2D &p = m_center;
+
+    qreal beta  = -m_angle;
+    qreal alpha = theta * DEG_TO_RAD;
+
+    // temporaries to save cpu time
+    qreal cosalpha = qCos(alpha);
+    qreal sinalpha = qSin(alpha);
+    qreal cosbeta  = qCos(beta);
+    qreal sinbeta  = qSin(beta);
+
+    m_pos = QVector2D(p.x() + (a * cosalpha * cosbeta - b * sinalpha * sinbeta),
+                      p.y() + (a * cosalpha * sinbeta + b * sinalpha * cosbeta));
+}