1*70f497fbSAndrew Rist /**************************************************************
2cdf0e10cSrcweir *
3*70f497fbSAndrew Rist * Licensed to the Apache Software Foundation (ASF) under one
4*70f497fbSAndrew Rist * or more contributor license agreements. See the NOTICE file
5*70f497fbSAndrew Rist * distributed with this work for additional information
6*70f497fbSAndrew Rist * regarding copyright ownership. The ASF licenses this file
7*70f497fbSAndrew Rist * to you under the Apache License, Version 2.0 (the
8*70f497fbSAndrew Rist * "License"); you may not use this file except in compliance
9*70f497fbSAndrew Rist * with the License. You may obtain a copy of the License at
10*70f497fbSAndrew Rist *
11*70f497fbSAndrew Rist * http://www.apache.org/licenses/LICENSE-2.0
12*70f497fbSAndrew Rist *
13*70f497fbSAndrew Rist * Unless required by applicable law or agreed to in writing,
14*70f497fbSAndrew Rist * software distributed under the License is distributed on an
15*70f497fbSAndrew Rist * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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17*70f497fbSAndrew Rist * specific language governing permissions and limitations
18*70f497fbSAndrew Rist * under the License.
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20*70f497fbSAndrew Rist *************************************************************/
21*70f497fbSAndrew Rist
22*70f497fbSAndrew Rist
23cdf0e10cSrcweir
24cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
25cdf0e10cSrcweir #include "precompiled_slideshow.hxx"
26cdf0e10cSrcweir
27cdf0e10cSrcweir #include <canvas/debug.hxx>
28cdf0e10cSrcweir #include <basegfx/matrix/b2dhommatrix.hxx>
29cdf0e10cSrcweir #include <basegfx/point/b2dpoint.hxx>
30cdf0e10cSrcweir #include <basegfx/numeric/ftools.hxx>
31cdf0e10cSrcweir #include <basegfx/matrix/b2dhommatrixtools.hxx>
32cdf0e10cSrcweir #include "waterfallwipe.hxx"
33cdf0e10cSrcweir #include "transitiontools.hxx"
34cdf0e10cSrcweir
35cdf0e10cSrcweir
36cdf0e10cSrcweir namespace slideshow {
37cdf0e10cSrcweir namespace internal {
38cdf0e10cSrcweir
WaterfallWipe(sal_Int32 nElements,bool flipOnYAxis)39cdf0e10cSrcweir WaterfallWipe::WaterfallWipe( sal_Int32 nElements, bool flipOnYAxis )
40cdf0e10cSrcweir : m_flipOnYAxis( flipOnYAxis )
41cdf0e10cSrcweir {
42cdf0e10cSrcweir const sal_Int32 sqrtElements = static_cast<sal_Int32>(
43cdf0e10cSrcweir sqrt( static_cast<double>(nElements) ) );
44cdf0e10cSrcweir const double elementEdge = (1.0 / sqrtElements);
45cdf0e10cSrcweir m_waterfall.append( ::basegfx::B2DPoint( 0.0, -1.0 ) );
46cdf0e10cSrcweir for ( sal_Int32 pos = sqrtElements; pos--; )
47cdf0e10cSrcweir {
48cdf0e10cSrcweir const sal_Int32 xPos = (sqrtElements - pos - 1);
49cdf0e10cSrcweir const double yPos = ::basegfx::pruneScaleValue( ((pos + 1) * elementEdge) - 1.0 );
50cdf0e10cSrcweir m_waterfall.append( ::basegfx::B2DPoint(
51cdf0e10cSrcweir ::basegfx::pruneScaleValue( xPos * elementEdge ),
52cdf0e10cSrcweir yPos ) );
53cdf0e10cSrcweir m_waterfall.append( ::basegfx::B2DPoint(
54cdf0e10cSrcweir ::basegfx::pruneScaleValue( (xPos + 1) * elementEdge ),
55cdf0e10cSrcweir yPos ) );
56cdf0e10cSrcweir }
57cdf0e10cSrcweir m_waterfall.append( ::basegfx::B2DPoint( 1.0, -1.0 ) );
58cdf0e10cSrcweir m_waterfall.setClosed(true);
59cdf0e10cSrcweir }
60cdf0e10cSrcweir
operator ()(double t)61cdf0e10cSrcweir ::basegfx::B2DPolyPolygon WaterfallWipe::operator () ( double t )
62cdf0e10cSrcweir {
63cdf0e10cSrcweir ::basegfx::B2DPolygon poly( m_waterfall );
64cdf0e10cSrcweir poly.transform(basegfx::tools::createTranslateB2DHomMatrix(0.0, ::basegfx::pruneScaleValue(2.0 * t)));
65cdf0e10cSrcweir poly.setB2DPoint( 0, ::basegfx::B2DPoint( 0.0, -1.0 ) );
66cdf0e10cSrcweir poly.setB2DPoint( poly.count()-1, ::basegfx::B2DPoint( 1.0, -1.0 ) );
67cdf0e10cSrcweir
68cdf0e10cSrcweir return m_flipOnYAxis ? flipOnYAxis( ::basegfx::B2DPolyPolygon(poly) )
69cdf0e10cSrcweir : ::basegfx::B2DPolyPolygon(poly);
70cdf0e10cSrcweir }
71cdf0e10cSrcweir
72cdf0e10cSrcweir }
73cdf0e10cSrcweir }
74