1*b1cdbd2cSJim Jagielski /**************************************************************
2*b1cdbd2cSJim Jagielski *
3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one
4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file
5*b1cdbd2cSJim Jagielski * distributed with this work for additional information
6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file
7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the
8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance
9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at
10*b1cdbd2cSJim Jagielski *
11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0
12*b1cdbd2cSJim Jagielski *
13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing,
14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an
15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the
17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations
18*b1cdbd2cSJim Jagielski * under the License.
19*b1cdbd2cSJim Jagielski *
20*b1cdbd2cSJim Jagielski *************************************************************/
21*b1cdbd2cSJim Jagielski
22*b1cdbd2cSJim Jagielski
23*b1cdbd2cSJim Jagielski
24*b1cdbd2cSJim Jagielski // MARKER(update_precomp.py): autogen include statement, do not remove
25*b1cdbd2cSJim Jagielski #include "precompiled_slideshow.hxx"
26*b1cdbd2cSJim Jagielski
27*b1cdbd2cSJim Jagielski #include <canvas/debug.hxx>
28*b1cdbd2cSJim Jagielski #include "spiralwipe.hxx"
29*b1cdbd2cSJim Jagielski #include "transitiontools.hxx"
30*b1cdbd2cSJim Jagielski
31*b1cdbd2cSJim Jagielski #include <basegfx/matrix/b2dhommatrix.hxx>
32*b1cdbd2cSJim Jagielski #include <basegfx/polygon/b2dpolygon.hxx>
33*b1cdbd2cSJim Jagielski #include <basegfx/numeric/ftools.hxx>
34*b1cdbd2cSJim Jagielski #include <basegfx/matrix/b2dhommatrixtools.hxx>
35*b1cdbd2cSJim Jagielski
36*b1cdbd2cSJim Jagielski
37*b1cdbd2cSJim Jagielski namespace slideshow {
38*b1cdbd2cSJim Jagielski namespace internal {
39*b1cdbd2cSJim Jagielski
SpiralWipe(sal_Int32 nElements,bool flipOnYAxis)40*b1cdbd2cSJim Jagielski SpiralWipe::SpiralWipe( sal_Int32 nElements, bool flipOnYAxis )
41*b1cdbd2cSJim Jagielski : m_elements(nElements),
42*b1cdbd2cSJim Jagielski m_sqrtElements( static_cast<sal_Int32>(
43*b1cdbd2cSJim Jagielski sqrt( static_cast<double>(nElements) ) ) ),
44*b1cdbd2cSJim Jagielski m_flipOnYAxis(flipOnYAxis)
45*b1cdbd2cSJim Jagielski {
46*b1cdbd2cSJim Jagielski }
47*b1cdbd2cSJim Jagielski
calcNegSpiral(double t) const48*b1cdbd2cSJim Jagielski ::basegfx::B2DPolyPolygon SpiralWipe::calcNegSpiral( double t ) const
49*b1cdbd2cSJim Jagielski {
50*b1cdbd2cSJim Jagielski const double area = (t * m_elements);
51*b1cdbd2cSJim Jagielski const double e = (sqrt(area) / 2.0);
52*b1cdbd2cSJim Jagielski const sal_Int32 edge = (static_cast<sal_Int32>(e) * 2);
53*b1cdbd2cSJim Jagielski
54*b1cdbd2cSJim Jagielski basegfx::B2DHomMatrix aTransform(basegfx::tools::createTranslateB2DHomMatrix(-0.5, -0.5));
55*b1cdbd2cSJim Jagielski const double edge_ = ::basegfx::pruneScaleValue(
56*b1cdbd2cSJim Jagielski static_cast<double>(edge) / m_sqrtElements );
57*b1cdbd2cSJim Jagielski aTransform.scale( edge_, edge_ );
58*b1cdbd2cSJim Jagielski aTransform.translate( 0.5, 0.5 );
59*b1cdbd2cSJim Jagielski ::basegfx::B2DPolygon poly( createUnitRect() );
60*b1cdbd2cSJim Jagielski poly.transform( aTransform );
61*b1cdbd2cSJim Jagielski ::basegfx::B2DPolyPolygon res(poly);
62*b1cdbd2cSJim Jagielski
63*b1cdbd2cSJim Jagielski if (! ::basegfx::fTools::equalZero( 1.0 - t )) {
64*b1cdbd2cSJim Jagielski const sal_Int32 edge1 = (edge + 1);
65*b1cdbd2cSJim Jagielski sal_Int32 len = static_cast<sal_Int32>( (e - (edge /2)) * edge1 * 4 );
66*b1cdbd2cSJim Jagielski double w = M_PI_2;
67*b1cdbd2cSJim Jagielski while (len > 0) {
68*b1cdbd2cSJim Jagielski const sal_Int32 alen = (len > edge1 ? edge1 : len);
69*b1cdbd2cSJim Jagielski len -= alen;
70*b1cdbd2cSJim Jagielski poly = createUnitRect();
71*b1cdbd2cSJim Jagielski aTransform = basegfx::tools::createScaleB2DHomMatrix(
72*b1cdbd2cSJim Jagielski ::basegfx::pruneScaleValue( static_cast<double>(alen) / m_sqrtElements ),
73*b1cdbd2cSJim Jagielski ::basegfx::pruneScaleValue( 1.0 / m_sqrtElements ) );
74*b1cdbd2cSJim Jagielski aTransform.translate(
75*b1cdbd2cSJim Jagielski - ::basegfx::pruneScaleValue(
76*b1cdbd2cSJim Jagielski static_cast<double>(edge / 2) / m_sqrtElements ),
77*b1cdbd2cSJim Jagielski ::basegfx::pruneScaleValue(
78*b1cdbd2cSJim Jagielski static_cast<double>(edge / 2) / m_sqrtElements ) );
79*b1cdbd2cSJim Jagielski aTransform.rotate( w );
80*b1cdbd2cSJim Jagielski w -= M_PI_2;
81*b1cdbd2cSJim Jagielski aTransform.translate( 0.5, 0.5 );
82*b1cdbd2cSJim Jagielski poly.transform( aTransform );
83*b1cdbd2cSJim Jagielski res.append(poly);
84*b1cdbd2cSJim Jagielski }
85*b1cdbd2cSJim Jagielski }
86*b1cdbd2cSJim Jagielski
87*b1cdbd2cSJim Jagielski return res;
88*b1cdbd2cSJim Jagielski }
89*b1cdbd2cSJim Jagielski
operator ()(double t)90*b1cdbd2cSJim Jagielski ::basegfx::B2DPolyPolygon SpiralWipe::operator () ( double t )
91*b1cdbd2cSJim Jagielski {
92*b1cdbd2cSJim Jagielski ::basegfx::B2DPolyPolygon res( createUnitRect() );
93*b1cdbd2cSJim Jagielski ::basegfx::B2DPolyPolygon innerSpiral( calcNegSpiral( 1.0 - t ) );
94*b1cdbd2cSJim Jagielski innerSpiral.flip();
95*b1cdbd2cSJim Jagielski res.append(innerSpiral);
96*b1cdbd2cSJim Jagielski return m_flipOnYAxis ? flipOnYAxis(res) : res;
97*b1cdbd2cSJim Jagielski }
98*b1cdbd2cSJim Jagielski
operator ()(double t)99*b1cdbd2cSJim Jagielski ::basegfx::B2DPolyPolygon BoxSnakesWipe::operator () ( double t )
100*b1cdbd2cSJim Jagielski {
101*b1cdbd2cSJim Jagielski ::basegfx::B2DPolyPolygon res( createUnitRect() );
102*b1cdbd2cSJim Jagielski ::basegfx::B2DPolyPolygon innerSpiral( calcNegSpiral( 1.0 - t ) );
103*b1cdbd2cSJim Jagielski innerSpiral.flip();
104*b1cdbd2cSJim Jagielski
105*b1cdbd2cSJim Jagielski if (m_fourBox) {
106*b1cdbd2cSJim Jagielski ::basegfx::B2DHomMatrix aTransform;
107*b1cdbd2cSJim Jagielski aTransform.scale( 0.5, 0.5 );
108*b1cdbd2cSJim Jagielski innerSpiral.transform( aTransform );
109*b1cdbd2cSJim Jagielski res.append(innerSpiral);
110*b1cdbd2cSJim Jagielski res.append( flipOnXAxis(innerSpiral) );
111*b1cdbd2cSJim Jagielski innerSpiral = flipOnYAxis(innerSpiral);
112*b1cdbd2cSJim Jagielski res.append(innerSpiral);
113*b1cdbd2cSJim Jagielski res.append( flipOnXAxis(innerSpiral) );
114*b1cdbd2cSJim Jagielski }
115*b1cdbd2cSJim Jagielski else {
116*b1cdbd2cSJim Jagielski ::basegfx::B2DHomMatrix aTransform;
117*b1cdbd2cSJim Jagielski aTransform.scale( 1.0, 0.5 );
118*b1cdbd2cSJim Jagielski innerSpiral.transform( aTransform );
119*b1cdbd2cSJim Jagielski res.append(innerSpiral);
120*b1cdbd2cSJim Jagielski res.append( flipOnXAxis(innerSpiral) );
121*b1cdbd2cSJim Jagielski }
122*b1cdbd2cSJim Jagielski
123*b1cdbd2cSJim Jagielski return m_flipOnYAxis ? flipOnYAxis(res) : res;
124*b1cdbd2cSJim Jagielski }
125*b1cdbd2cSJim Jagielski
126*b1cdbd2cSJim Jagielski }
127*b1cdbd2cSJim Jagielski }
128