1 files changed, 54 insertions, 0 deletions
diff --git a/slideshow/source/engine/transitions/barndoorwipe.cxx b/slideshow/source/engine/transitions/barndoorwipe.cxx
new file mode 100644
index 000000000..c2621f931
--- /dev/null
+++ b/slideshow/source/engine/transitions/barndoorwipe.cxx
@@ -0,0 +1,54 @@
+/* -*- 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/numeric/ftools.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include "barndoorwipe.hxx"
+
+
+namespace slideshow::internal {
+
+::basegfx::B2DPolyPolygon BarnDoorWipe::operator () ( double t )
+{
+    if (m_doubled)
+        t /= 2.0;
+
+    basegfx::B2DHomMatrix aTransform(basegfx::utils::createTranslateB2DHomMatrix(-0.5, -0.5));
+    aTransform.scale( ::basegfx::pruneScaleValue(t), 1.0 );
+    aTransform.translate( 0.5, 0.5 );
+    ::basegfx::B2DPolygon poly( m_unitRect );
+    poly.transform( aTransform );
+    ::basegfx::B2DPolyPolygon res(poly);
+
+    if (m_doubled) {
+        aTransform = basegfx::utils::createTranslateB2DHomMatrix(-0.5, -0.5);
+        aTransform.rotate( M_PI_2 );
+        aTransform.translate( 0.5, 0.5 );
+        poly.transform( aTransform );
+        res.append(poly);
+    }
+
+    return res;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */