1 /*************************************************************************
2  *
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * Copyright 2000, 2010 Oracle and/or its affiliates.
6  *
7  * OpenOffice.org - a multi-platform office productivity suite
8  *
9  * This file is part of OpenOffice.org.
10  *
11  * OpenOffice.org is free software: you can redistribute it and/or modify
12  * it under the terms of the GNU Lesser General Public License version 3
13  * only, as published by the Free Software Foundation.
14  *
15  * OpenOffice.org is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU Lesser General Public License version 3 for more details
19  * (a copy is included in the LICENSE file that accompanied this code).
20  *
21  * You should have received a copy of the GNU Lesser General Public License
22  * version 3 along with OpenOffice.org.  If not, see
23  * <http://www.openoffice.org/license.html>
24  * for a copy of the LGPLv3 License.
25  *
26  ************************************************************************/
27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_slideshow.hxx"
30 
31 #include <canvas/debug.hxx>
32 #include <basegfx/matrix/b2dhommatrix.hxx>
33 #include <basegfx/numeric/ftools.hxx>
34 #include <basegfx/matrix/b2dhommatrixtools.hxx>
35 #include "clockwipe.hxx"
36 #include "pinwheelwipe.hxx"
37 
38 
39 namespace slideshow {
40 namespace internal {
41 
42 ::basegfx::B2DPolyPolygon PinWheelWipe::operator () ( double t )
43 {
44     ::basegfx::B2DPolygon poly( ClockWipe::calcCenteredClock(
45                                     t / m_blades,
46                                     2.0 /* max edge when rotating */ ) );
47     ::basegfx::B2DPolyPolygon res;
48     for ( sal_Int32 i = m_blades; i--; )
49     {
50         ::basegfx::B2DPolygon p(poly);
51         p.transform(basegfx::tools::createRotateB2DHomMatrix((i * 2.0 * M_PI) / m_blades));
52         res.append( p );
53     }
54     res.transform(basegfx::tools::createScaleTranslateB2DHomMatrix(0.5, 0.5, 0.5, 0.5));
55     return res;
56 }
57 
58 }
59 }
60