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 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_slideshow.hxx"
26
27 #include <canvas/debug.hxx>
28 #include <basegfx/numeric/ftools.hxx>
29 #include <basegfx/matrix/b2dhommatrix.hxx>
30 #include <basegfx/matrix/b2dhommatrixtools.hxx>
31 #include "barndoorwipe.hxx"
32
33
34 namespace slideshow {
35 namespace internal {
36
operator ()(double t)37 ::basegfx::B2DPolyPolygon BarnDoorWipe::operator () ( double t )
38 {
39 if (m_doubled)
40 t /= 2.0;
41
42 basegfx::B2DHomMatrix aTransform(basegfx::tools::createTranslateB2DHomMatrix(-0.5, -0.5));
43 aTransform.scale( ::basegfx::pruneScaleValue(t), 1.0 );
44 aTransform.translate( 0.5, 0.5 );
45 ::basegfx::B2DPolygon poly( m_unitRect );
46 poly.transform( aTransform );
47 ::basegfx::B2DPolyPolygon res(poly);
48
49 if (m_doubled) {
50 aTransform = basegfx::tools::createTranslateB2DHomMatrix(-0.5, -0.5);
51 aTransform.rotate( M_PI_2 );
52 aTransform.translate( 0.5, 0.5 );
53 poly.transform( aTransform );
54 res.append(poly);
55 }
56
57 return res;
58 }
59
60 }
61 }
62