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/matrix/b2dhommatrix.hxx> 29 #include <basegfx/point/b2dpoint.hxx> 30 #include <basegfx/numeric/ftools.hxx> 31 #include <basegfx/matrix/b2dhommatrixtools.hxx> 32 #include "clockwipe.hxx" 33 34 35 namespace slideshow { 36 namespace internal { 37 38 ::basegfx::B2DPolygon ClockWipe::calcCenteredClock( double t, double e ) 39 { 40 ::basegfx::B2DPolygon poly; 41 ::basegfx::B2DHomMatrix aTransform; 42 aTransform.rotate( t * 2.0 * M_PI ); 43 const double MAX_EDGE = 2.0; 44 ::basegfx::B2DPoint p( 0.0, -MAX_EDGE ); 45 p *= aTransform; 46 poly.append( p ); 47 if (t >= 0.875) 48 poly.append( ::basegfx::B2DPoint( -e, -e ) ); 49 if (t >= 0.625) 50 poly.append( ::basegfx::B2DPoint( -e, e ) ); 51 if (t >= 0.375) 52 poly.append( ::basegfx::B2DPoint( e, e ) ); 53 if (t >= 0.125) 54 poly.append( ::basegfx::B2DPoint( e, -e ) ); 55 poly.append( ::basegfx::B2DPoint( 0.0, -e ) ); 56 poly.append( ::basegfx::B2DPoint( 0.0, 0.0 ) ); 57 poly.setClosed(true); 58 return poly; 59 } 60 61 ::basegfx::B2DPolyPolygon ClockWipe::operator () ( double t ) 62 { 63 const basegfx::B2DHomMatrix aTransform(basegfx::tools::createScaleTranslateB2DHomMatrix(0.5, 0.5, 0.5, 0.5)); 64 ::basegfx::B2DPolygon poly( calcCenteredClock(t) ); 65 poly.transform( aTransform ); 66 return ::basegfx::B2DPolyPolygon(poly); 67 } 68 69 } 70 } 71