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101 lines
3.2 KiB
101 lines
3.2 KiB
14 years ago
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/*
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* This file is part of Chalk
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*
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* Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "kis_perspective_grid.h"
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int KisSubPerspectiveGrid::s_lastIndex = 0;
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KisSubPerspectiveGrid::KisSubPerspectiveGrid(KisPerspectiveGridNodeSP topLeft, KisPerspectiveGridNodeSP topRight, KisPerspectiveGridNodeSP bottomRight, KisPerspectiveGridNodeSP bottomLeft) : m_topLeft(topLeft), m_topRight(topRight), m_bottomRight(bottomRight), m_bottomLeft(bottomLeft), m_subdivisions(5), m_leftGrid(0), m_rightGrid(0), m_topGrid(0), m_bottomGrid(0), m_index(++s_lastIndex)
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{
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}
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bool KisSubPerspectiveGrid::tqcontains(const KisPoint p) const
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{
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return true;
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KisPerspectiveMath::LineEquation d1 = KisPerspectiveMath::computeLineEquation( topLeft(), topRight() );
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kdDebug() << p.y() << " " << (p.x() * d1.a + d1.b) << endl;
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if( p.y() >= p.x() * d1.a + d1.b)
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{
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d1 = KisPerspectiveMath::computeLineEquation( topRight(), bottomRight() );
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kdDebug() << p.y() << " " << (p.x() * d1.a + d1.b) << endl;
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if( p.y() >= p.x() * d1.a + d1.b)
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{
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d1 = KisPerspectiveMath::computeLineEquation( bottomRight(), bottomLeft() );
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kdDebug() << p.y() << " " << (p.x() * d1.a + d1.b) << endl;
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if( p.y() <= p.x() * d1.a + d1.b)
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{
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d1 = KisPerspectiveMath::computeLineEquation( bottomLeft(), topLeft() );
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kdDebug() << p.y() << " " << (p.x() * d1.a + d1.b) << endl;
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if( p.y() <= p.x() * d1.a + d1.b)
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{
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return true;
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}
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}
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}
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}
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return false;
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}
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KisPerspectiveGrid::KisPerspectiveGrid()
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{
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}
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KisPerspectiveGrid::~KisPerspectiveGrid()
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{
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clearSubGrids( );
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}
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bool KisPerspectiveGrid::addNewSubGrid( KisSubPerspectiveGrid* ng )
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{
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if(hasSubGrids() && !ng->topGrid() && !ng->bottomGrid() && !ng->leftGrid() && !ng->rightGrid() )
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{
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kdError() << "sub grids need a neighbourgh if they are not the first grid to be added" << endl;
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return false;
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}
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m_subGrids.push_back(ng);
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return true;
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}
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void KisPerspectiveGrid::clearSubGrids( )
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{
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for( TQValueList<KisSubPerspectiveGrid*>::const_iterator it = begin(); it != end(); ++it)
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{
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delete *it;
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}
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m_subGrids.clear();
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}
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KisSubPerspectiveGrid* KisPerspectiveGrid::gridAt(KisPoint p)
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{
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for( TQValueList<KisSubPerspectiveGrid*>::const_iterator it = begin(); it != end(); ++it)
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{
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if( (*it)->tqcontains(p) )
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{
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return *it;
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}
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}
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return 0;
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}
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