1 files changed, 87 insertions, 0 deletions
diff --git a/tools/source/generic/point.cxx b/tools/source/generic/point.cxx
new file mode 100644
index 000000000..f33fe9a28
--- /dev/null
+++ b/tools/source/generic/point.cxx
@@ -0,0 +1,87 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <tools/gen.hxx>
+#include <basegfx/numeric/ftools.hxx>
+
+void Point::RotateAround( Point& rPoint,
+                          short nOrientation ) const
+{
+    long nX = rPoint.X();
+    long nY = rPoint.Y();
+    RotateAround(nX, nY, nOrientation);
+    rPoint.setX(nX);
+    rPoint.setY(nY);
+}
+
+void Point::RotateAround( long& rX, long& rY,
+                          short nOrientation ) const
+{
+    const long nOriginX = X();
+    const long nOriginY = Y();
+
+    if ( (nOrientation >= 0) && !(nOrientation % 900) )
+    {
+        if ( nOrientation >= 3600 )
+            nOrientation %= 3600;
+
+        if ( nOrientation )
+        {
+            rX -= nOriginX;
+            rY -= nOriginY;
+
+            if ( nOrientation == 900 )
+            {
+                long nTemp = rX;
+                rX = rY;
+                rY = -nTemp;
+            }
+            else if ( nOrientation == 1800 )
+            {
+                rX = -rX;
+                rY = -rY;
+            }
+            else /* ( nOrientation == 2700 ) */
+            {
+                long nTemp = rX;
+                rX = -rY;
+                rY = nTemp;
+            }
+
+            rX += nOriginX;
+            rY += nOriginY;
+        }
+    }
+    else
+    {
+        double nRealOrientation = nOrientation*F_PI1800;
+        double nCos = cos( nRealOrientation );
+        double nSin = sin( nRealOrientation );
+
+        // Translation...
+        long nX = rX-nOriginX;
+        long nY = rY-nOriginY;
+
+        // Rotation...
+        rX = + static_cast<long>(nCos*nX + nSin*nY) + nOriginX;
+        rY = - static_cast<long>(nSin*nX - nCos*nY) + nOriginY;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */