1 files changed, 72 insertions, 0 deletions
diff --git a/slideshow/source/engine/transitions/sweepwipe.cxx b/slideshow/source/engine/transitions/sweepwipe.cxx
new file mode 100644
index 0000000000..e6fcb8c2d0
--- /dev/null
+++ b/slideshow/source/engine/transitions/sweepwipe.cxx
@@ -0,0 +1,72 @@
+/* -*- 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 <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include "clockwipe.hxx"
+#include "sweepwipe.hxx"
+#include "transitiontools.hxx"
+
+
+namespace slideshow::internal {
+
+::basegfx::B2DPolyPolygon SweepWipe::operator () ( double t )
+{
+    t /= 2.0;
+    if (! m_center)
+        t /= 2.0;
+    if (!m_single && !m_oppositeVertical)
+        t /= 2.0;
+
+    ::basegfx::B2DPolygon poly( ClockWipe::calcCenteredClock( 0.25 + t ) );
+    ::basegfx::B2DHomMatrix aTransform;
+
+    if (m_center)
+    {
+        aTransform = basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.0);
+        poly.transform( aTransform );
+    }
+    ::basegfx::B2DPolyPolygon res(poly);
+
+    if (! m_single)
+    {
+        if (m_oppositeVertical)
+        {
+            aTransform = basegfx::utils::createScaleB2DHomMatrix(1.0, -1.0);
+            aTransform.translate( 0.0, 1.0 );
+            poly.transform( aTransform );
+            poly.flip();
+        }
+        else
+        {
+            aTransform = basegfx::utils::createTranslateB2DHomMatrix(-0.5, -0.5);
+            aTransform.rotate( M_PI );
+            aTransform.translate( 0.5, 0.5 );
+            poly.transform( aTransform );
+        }
+        res.append(poly);
+    }
+
+    return m_flipOnYAxis ? flipOnYAxis(res) : res;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */