1 /**************************************************************
2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
6  * regarding copyright ownership.  The ASF licenses this file
7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  *
20  *************************************************************/
21 
22 
23 
24 #if ! defined INCLUDED_SLIDESHOW_SNAKEWIPE_HXX
25 #define INCLUDED_SLIDESHOW_SNAKEWIPE_HXX
26 
27 #include "parametricpolypolygon.hxx"
28 
29 #include <basegfx/numeric/ftools.hxx>
30 #include <basegfx/point/b2dpoint.hxx>
31 
32 
33 namespace slideshow {
34 namespace internal {
35 
36 /// Generates a snake wipe:
37 class SnakeWipe : public ParametricPolyPolygon
38 {
39 public:
40     SnakeWipe( sal_Int32 nElements, bool diagonal, bool flipOnYAxis );
41     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
42 
43 protected:
44     // topLeftHorizontal:
45     ::basegfx::B2DPolyPolygon calcSnake( double t ) const;
46     // topLeftDiagonal:
47     ::basegfx::B2DPolyPolygon calcHalfDiagonalSnake( double t, bool in ) const;
48 
49     const sal_Int32 m_sqrtElements;
50     const double m_elementEdge;
51     const bool m_diagonal;
52     const bool m_flipOnYAxis;
53 };
54 
55 /// Generates a parallel snakes wipe:
56 class ParallelSnakesWipe : public SnakeWipe
57 {
58 public:
ParallelSnakesWipe(sal_Int32 nElements,bool diagonal,bool flipOnYAxis,bool opposite)59     ParallelSnakesWipe( sal_Int32 nElements,
60                         bool diagonal, bool flipOnYAxis, bool opposite )
61         : SnakeWipe( nElements, diagonal, flipOnYAxis ),
62           m_opposite( opposite )
63         {}
64     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
65 private:
66     const bool m_opposite;
67 };
68 
69 }
70 }
71 
72 #endif /* INCLUDED_SLIDESHOW_SNAKEWIPE_HXX */
73