1 files changed, 70 insertions, 0 deletions
diff --git a/slideshow/source/engine/transitions/zigzagwipe.cxx b/slideshow/source/engine/transitions/zigzagwipe.cxx
new file mode 100644
index 000000000..9b1f14221
--- /dev/null
+++ b/slideshow/source/engine/transitions/zigzagwipe.cxx
@@ -0,0 +1,70 @@
+/* -*- 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/point/b2dpoint.hxx>
+#include <basegfx/matrix/b2dhommatrixtools.hxx>
+#include "transitiontools.hxx"
+#include "zigzagwipe.hxx"
+
+
+namespace slideshow::internal {
+
+ZigZagWipe::ZigZagWipe( sal_Int32 nZigs ) : m_zigEdge( 1.0 / nZigs )
+{
+    const double d = m_zigEdge;
+    const double d2 = d / 2.0;
+    m_stdZigZag.append( ::basegfx::B2DPoint( -1.0 - d, -d ) );
+    m_stdZigZag.append( ::basegfx::B2DPoint( -1.0 - d, 1.0 + d ) );
+    m_stdZigZag.append( ::basegfx::B2DPoint( -d, 1.0 + d ) );
+    for ( sal_Int32 pos = nZigs + 2; pos--; ) {
+        m_stdZigZag.append( ::basegfx::B2DPoint( 0.0, ((pos - 1) * d) + d2 ) );
+        m_stdZigZag.append( ::basegfx::B2DPoint( -d, (pos - 1) * d ) );
+    }
+    m_stdZigZag.setClosed(true);
+}
+
+::basegfx::B2DPolyPolygon ZigZagWipe::operator () ( double t )
+{
+    ::basegfx::B2DPolyPolygon res(m_stdZigZag);
+    res.transform(basegfx::utils::createTranslateB2DHomMatrix((1.0 + m_zigEdge) * t, 0.0));
+    return res;
+}
+
+::basegfx::B2DPolyPolygon BarnZigZagWipe::operator () ( double t )
+{
+    ::basegfx::B2DPolyPolygon res( createUnitRect() );
+    ::basegfx::B2DPolygon poly( m_stdZigZag );
+    poly.flip();
+    basegfx::B2DHomMatrix aTransform(basegfx::utils::createTranslateB2DHomMatrix(
+        (1.0 + m_zigEdge) * (1.0 - t) / 2.0, 0.0));
+    poly.transform( aTransform );
+    res.append( poly );
+    aTransform.scale( -1.0, 1.0 );
+    aTransform.translate( 1.0, m_zigEdge / 2.0 );
+    poly = m_stdZigZag;
+    poly.transform( aTransform );
+    res.append( poly );
+    return res;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */