1 files changed, 57 insertions, 0 deletions
diff --git a/slideshow/source/engine/transitions/transitiontools.cxx b/slideshow/source/engine/transitions/transitiontools.cxx
new file mode 100644
index 0000000000..e930028f60
--- /dev/null
+++ b/slideshow/source/engine/transitions/transitiontools.cxx
@@ -0,0 +1,57 @@
+/* -*- 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 "transitiontools.hxx"
+#include <basegfx/polygon/b2dpolygon.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+
+
+namespace slideshow::internal {
+
+// TODO(Q2): Move this to basegfx
+::basegfx::B2DPolygon createUnitRect()
+{
+    return ::basegfx::utils::createPolygonFromRect(
+        ::basegfx::B2DRectangle(0.0,0.0,
+                                1.0,1.0 ) );
+}
+
+::basegfx::B2DPolyPolygon flipOnYAxis(
+    ::basegfx::B2DPolyPolygon const & polypoly )
+{
+    ::basegfx::B2DPolyPolygon res(polypoly);
+    res.transform(basegfx::utils::createScaleTranslateB2DHomMatrix(-1.0, 1.0, 1.0, 0.0));
+    res.flip();
+    return res;
+}
+
+::basegfx::B2DPolyPolygon flipOnXAxis(
+    ::basegfx::B2DPolyPolygon const & polypoly )
+{
+    ::basegfx::B2DPolyPolygon res(polypoly);
+    res.transform(basegfx::utils::createScaleTranslateB2DHomMatrix(1.0, -1.0, 0.0, 1.0));
+    res.flip();
+    return res;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */