| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| // MARKER(update_precomp.py): autogen include statement, do not remove |
| #include "precompiled_slideshow.hxx" |
| |
| #include <canvas/debug.hxx> |
| #include <basegfx/matrix/b2dhommatrix.hxx> |
| #include <basegfx/point/b2dpoint.hxx> |
| #include <basegfx/numeric/ftools.hxx> |
| #include <basegfx/matrix/b2dhommatrixtools.hxx> |
| #include "waterfallwipe.hxx" |
| #include "transitiontools.hxx" |
| |
| |
| namespace slideshow { |
| namespace internal { |
| |
| WaterfallWipe::WaterfallWipe( sal_Int32 nElements, bool flipOnYAxis ) |
| : m_flipOnYAxis( flipOnYAxis ) |
| { |
| const sal_Int32 sqrtElements = static_cast<sal_Int32>( |
| sqrt( static_cast<double>(nElements) ) ); |
| const double elementEdge = (1.0 / sqrtElements); |
| m_waterfall.append( ::basegfx::B2DPoint( 0.0, -1.0 ) ); |
| for ( sal_Int32 pos = sqrtElements; pos--; ) |
| { |
| const sal_Int32 xPos = (sqrtElements - pos - 1); |
| const double yPos = ::basegfx::pruneScaleValue( ((pos + 1) * elementEdge) - 1.0 ); |
| m_waterfall.append( ::basegfx::B2DPoint( |
| ::basegfx::pruneScaleValue( xPos * elementEdge ), |
| yPos ) ); |
| m_waterfall.append( ::basegfx::B2DPoint( |
| ::basegfx::pruneScaleValue( (xPos + 1) * elementEdge ), |
| yPos ) ); |
| } |
| m_waterfall.append( ::basegfx::B2DPoint( 1.0, -1.0 ) ); |
| m_waterfall.setClosed(true); |
| } |
| |
| ::basegfx::B2DPolyPolygon WaterfallWipe::operator () ( double t ) |
| { |
| ::basegfx::B2DPolygon poly( m_waterfall ); |
| poly.transform(basegfx::tools::createTranslateB2DHomMatrix(0.0, ::basegfx::pruneScaleValue(2.0 * t))); |
| poly.setB2DPoint( 0, ::basegfx::B2DPoint( 0.0, -1.0 ) ); |
| poly.setB2DPoint( poly.count()-1, ::basegfx::B2DPoint( 1.0, -1.0 ) ); |
| |
| return m_flipOnYAxis ? flipOnYAxis( ::basegfx::B2DPolyPolygon(poly) ) |
| : ::basegfx::B2DPolyPolygon(poly); |
| } |
| |
| } |
| } |
