OpenWalnut
1.2.5
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00001 //--------------------------------------------------------------------------- 00002 // 00003 // Project: OpenWalnut ( http://www.openwalnut.org ) 00004 // 00005 // Copyright 2009 OpenWalnut Community, BSV@Uni-Leipzig and CNCF@MPI-CBS 00006 // For more information see http://www.openwalnut.org/copying 00007 // 00008 // This file is part of OpenWalnut. 00009 // 00010 // OpenWalnut is free software: you can redistribute it and/or modify 00011 // it under the terms of the GNU Lesser General Public License as published by 00012 // the Free Software Foundation, either version 3 of the License, or 00013 // (at your option) any later version. 00014 // 00015 // OpenWalnut is distributed in the hope that it will be useful, 00016 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00017 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00018 // GNU Lesser General Public License for more details. 00019 // 00020 // You should have received a copy of the GNU Lesser General Public License 00021 // along with OpenWalnut. If not, see <http://www.gnu.org/licenses/>. 00022 // 00023 //--------------------------------------------------------------------------- 00024 00025 #include <string> 00026 #include <vector> 00027 00028 #include "../common/WAssert.h" 00029 #include "../common/WLimits.h" 00030 #include "datastructures/WValueSetHistogram.h" 00031 #include "WDataSetSingle.h" 00032 00033 #include "WDataSetScalar.h" 00034 00035 // prototype instance as singleton 00036 boost::shared_ptr< WPrototyped > WDataSetScalar::m_prototype = boost::shared_ptr< WPrototyped >(); 00037 00038 WDataSetScalar::WDataSetScalar( boost::shared_ptr< WValueSetBase > newValueSet, 00039 boost::shared_ptr< WGrid > newGrid ) 00040 : WDataSetSingle( newValueSet, newGrid ) 00041 { 00042 WAssert( newValueSet, "No value set given." ); 00043 WAssert( newGrid, "No grid given." ); 00044 WAssert( newValueSet->size() == newGrid->size(), "Number of values unequal number of positions in grid." ); 00045 WAssert( newValueSet->order() == 0, "The value set does not contain scalars." ); 00046 } 00047 00048 WDataSetScalar::WDataSetScalar() 00049 : WDataSetSingle() 00050 { 00051 // default constructor used by the prototype mechanism 00052 } 00053 00054 WDataSetScalar::~WDataSetScalar() 00055 { 00056 } 00057 00058 WDataSetSingle::SPtr WDataSetScalar::clone( boost::shared_ptr< WValueSetBase > newValueSet ) const 00059 { 00060 return WDataSetSingle::SPtr( new WDataSetScalar( newValueSet, getGrid() ) ); 00061 } 00062 00063 WDataSetSingle::SPtr WDataSetScalar::clone( boost::shared_ptr< WGrid > newGrid ) const 00064 { 00065 return WDataSetSingle::SPtr( new WDataSetScalar( getValueSet(), newGrid ) ); 00066 } 00067 00068 WDataSetSingle::SPtr WDataSetScalar::clone() const 00069 { 00070 return WDataSetSingle::SPtr( new WDataSetScalar( getValueSet(), getGrid() ) ); 00071 } 00072 00073 double WDataSetScalar::getMax() const 00074 { 00075 return m_valueSet->getMaximumValue(); 00076 } 00077 00078 double WDataSetScalar::getMin() const 00079 { 00080 return m_valueSet->getMinimumValue(); 00081 } 00082 00083 boost::shared_ptr< WPrototyped > WDataSetScalar::getPrototype() 00084 { 00085 if( !m_prototype ) 00086 { 00087 m_prototype = boost::shared_ptr< WPrototyped >( new WDataSetScalar() ); 00088 } 00089 00090 return m_prototype; 00091 } 00092 00093 double WDataSetScalar::interpolate( const WPosition& pos, bool* success ) const 00094 { 00095 boost::shared_ptr< WGridRegular3D > grid = boost::shared_dynamic_cast< WGridRegular3D >( m_grid ); 00096 00097 WAssert( grid, "This data set has a grid whose type is not yet supported for interpolation." ); 00098 WAssert( grid->isNotRotated(), "Only feasible for grids that are only translated or scaled so far." ); 00099 WAssert( ( m_valueSet->order() == 0 && m_valueSet->dimension() == 1 ), 00100 "Only implemented for scalar values so far." ); 00101 00102 bool isInside = true; 00103 size_t cellId = grid->getCellId( pos, &isInside ); 00104 00105 if( !isInside ) 00106 { 00107 *success = false; 00108 return 0.0; 00109 } 00110 00111 std::vector< size_t > vertexIds = grid->getCellVertexIds( cellId ); 00112 00113 WPosition localPos = pos - grid->getPosition( vertexIds[0] ); 00114 00115 double lambdaX = localPos[0] / grid->getOffsetX(); 00116 double lambdaY = localPos[1] / grid->getOffsetY(); 00117 double lambdaZ = localPos[2] / grid->getOffsetZ(); 00118 std::vector< double > h( 8 ); 00119 // lZ lY 00120 // | / 00121 // | 6___/_7 00122 // |/: /| 00123 // 4_:___5 | 00124 // | :...|.| 00125 // |.2 | 3 00126 // |_____|/ ____lX 00127 // 0 1 00128 h[0] = ( 1 - lambdaX ) * ( 1 - lambdaY ) * ( 1 - lambdaZ ); 00129 h[1] = ( lambdaX ) * ( 1 - lambdaY ) * ( 1 - lambdaZ ); 00130 h[2] = ( 1 - lambdaX ) * ( lambdaY ) * ( 1 - lambdaZ ); 00131 h[3] = ( lambdaX ) * ( lambdaY ) * ( 1 - lambdaZ ); 00132 h[4] = ( 1 - lambdaX ) * ( 1 - lambdaY ) * ( lambdaZ ); 00133 h[5] = ( lambdaX ) * ( 1 - lambdaY ) * ( lambdaZ ); 00134 h[6] = ( 1 - lambdaX ) * ( lambdaY ) * ( lambdaZ ); 00135 h[7] = ( lambdaX ) * ( lambdaY ) * ( lambdaZ ); 00136 00137 double result = 0; 00138 for( size_t i = 0; i < 8; ++i ) 00139 { 00140 result += h[i] * WDataSetSingle::getValueAt( vertexIds[i] ); 00141 } 00142 00143 *success = true; 00144 return result; 00145 } 00146 00147 double WDataSetScalar::getValueAt( int x, int y, int z ) const 00148 { 00149 boost::shared_ptr< WGridRegular3D > grid = boost::shared_dynamic_cast< WGridRegular3D >( m_grid ); 00150 size_t id = x + y * grid->getNbCoordsX() + z * grid->getNbCoordsX() * grid->getNbCoordsY(); 00151 00152 return WDataSetSingle::getValueAt( id ); 00153 } 00154 00155 boost::shared_ptr< const WValueSetHistogram > WDataSetScalar::getHistogram( size_t buckets ) 00156 { 00157 boost::lock_guard<boost::mutex> lock( m_histogramLock ); 00158 00159 if( m_histograms.count( buckets ) != 0 ) 00160 { 00161 return m_histograms[ buckets ]; 00162 } 00163 00164 // create if not yet existing 00165 m_histograms[ buckets ] = boost::shared_ptr< WValueSetHistogram >( new WValueSetHistogram( m_valueSet, buckets ) ); 00166 00167 return m_histograms[ buckets ]; 00168 } 00169