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Hash functions for BOARD_ITEMs

This commit is contained in:
Maciej Suminski 2017-10-09 11:44:02 +02:00
parent 847bede635
commit 944c5481fe
3 changed files with 243 additions and 0 deletions
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1
common/CMakeLists.txt
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@ -252,6 +252,7 @@ set( COMMON_SRCS
filter_reader.cpp
footprint_info.cpp
footprint_filter.cpp
hash_eda.cpp
lib_id.cpp
lib_table_keywords.cpp
# findkicadhelppath.cpp.notused deprecated, use searchhelpfilefullpath.cpp

188
common/hash_eda.cpp Normal file
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@ -0,0 +1,188 @@
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 CERN
* @author Maciej Suminski <maciej.suminski@cern.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <hash_eda.h>
#include <class_module.h>
#include <class_text_mod.h>
#include <class_edge_mod.h>
#include <class_pad.h>
#include <functional>
using namespace std;
// Common calculation part for all BOARD_ITEMs
static inline size_t hash_board_item( const BOARD_ITEM* aItem, int aFlags )
{
size_t ret = 0;
if( aFlags & LAYER )
ret ^= hash<unsigned long long>{}( aItem->GetLayerSet().to_ullong() );
return ret;
}
size_t hash_eda( const EDA_ITEM* aItem, int aFlags )
{
size_t ret = 0xa82de1c0;
switch( aItem->Type() )
{
case PCB_MODULE_T:
{
const MODULE* module = static_cast<const MODULE*>( aItem );
ret ^= hash_board_item( module, aFlags );
if( aFlags & POSITION )
{
ret ^= hash<int>{}( module->GetPosition().x );
ret ^= hash<int>{}( module->GetPosition().y );
}
if( aFlags & ROTATION )
ret ^= hash<double>{}( module->GetOrientation() );
for( const BOARD_ITEM* i = module->GraphicalItemsList(); i; i = i->Next() )
ret ^= hash_eda( i, aFlags );
for( const D_PAD* i = module->PadsList(); i; i = i->Next() )
ret ^= hash_eda( i, aFlags );
}
break;
case PCB_PAD_T:
{
const D_PAD* pad = static_cast<const D_PAD*>( aItem );
ret ^= hash_board_item( pad, aFlags );
ret ^= hash<int>{}( pad->GetShape() << 16 );
ret ^= hash<int>{}( pad->GetDrillShape() << 18 );
ret ^= hash<int>{}( pad->GetSize().x << 8 );
ret ^= hash<int>{}( pad->GetSize().y << 9 );
ret ^= hash<int>{}( pad->GetOffset().x << 6 );
ret ^= hash<int>{}( pad->GetOffset().y << 7 );
ret ^= hash<int>{}( pad->GetDelta().x << 4 );
ret ^= hash<int>{}( pad->GetDelta().y << 5 );
if( aFlags & POSITION )
{
if( aFlags & REL_COORD )
{
ret ^= hash<int>{}( pad->GetPos0().x );
ret ^= hash<int>{}( pad->GetPos0().y );
}
else
{
ret ^= hash<int>{}( pad->GetPosition().x );
ret ^= hash<int>{}( pad->GetPosition().y );
}
}
if( aFlags & ROTATION )
ret ^= hash<double>{}( pad->GetOrientation() );
if( aFlags & NET )
ret ^= hash<int>{}( pad->GetNetCode() << 6 );
}
break;
case PCB_MODULE_TEXT_T:
{
const TEXTE_MODULE* text = static_cast<const TEXTE_MODULE*>( aItem );
if( !( aFlags & REFERENCE ) && text->GetType() == TEXTE_MODULE::TEXT_is_REFERENCE )
break;
if( !( aFlags & VALUE ) && text->GetType() == TEXTE_MODULE::TEXT_is_VALUE )
break;
ret ^= hash_board_item( text, aFlags );
ret ^= hash<string>{}( text->GetText().ToStdString() );
ret ^= hash<bool>{}( text->IsItalic() );
ret ^= hash<bool>{}( text->IsBold() );
ret ^= hash<bool>{}( text->IsMirrored() );
ret ^= hash<int>{}( text->GetTextWidth() );
ret ^= hash<int>{}( text->GetTextHeight() );
ret ^= hash<int>{}( text->GetHorizJustify() );
ret ^= hash<int>{}( text->GetVertJustify() );
if( aFlags & POSITION )
{
if( aFlags & REL_COORD )
{
ret ^= hash<int>{}( text->GetPos0().x );
ret ^= hash<int>{}( text->GetPos0().y );
}
else
{
ret ^= hash<int>{}( text->GetPosition().x );
ret ^= hash<int>{}( text->GetPosition().y );
}
}
if( aFlags & ROTATION )
ret ^= hash<double>{}( text->GetTextAngle() );
}
break;
case PCB_MODULE_EDGE_T:
{
const EDGE_MODULE* segment = static_cast<const EDGE_MODULE*>( aItem );
ret ^= hash_board_item( segment, aFlags );
ret ^= hash<int>{}( segment->GetType() );
ret ^= hash<int>{}( segment->GetShape() );
ret ^= hash<int>{}( segment->GetWidth() );
ret ^= hash<int>{}( segment->GetRadius() );
if( aFlags & POSITION )
{
if( aFlags & REL_COORD )
{
ret ^= hash<int>{}( segment->GetStart0().x );
ret ^= hash<int>{}( segment->GetStart0().y );
ret ^= hash<int>{}( segment->GetEnd0().x );
ret ^= hash<int>{}( segment->GetEnd0().y );
}
else
{
ret ^= hash<int>{}( segment->GetStart().x );
ret ^= hash<int>{}( segment->GetStart().y );
ret ^= hash<int>{}( segment->GetEnd().x );
ret ^= hash<int>{}( segment->GetEnd().y );
}
}
if( aFlags & ROTATION )
ret ^= hash<double>{}( segment->GetAngle() );
}
break;
default:
wxASSERT_MSG( false, "Unhandled type in function hashModItem() (exporter_gencad.cpp)" );
}
return ret;
}

54
include/hash_eda.h Normal file
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@ -0,0 +1,54 @@
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 CERN
* @author Maciej Suminski <maciej.suminski@cern.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* @brief Hashing functions for EDA_ITEMs.
*/
#include <cstdlib>
class EDA_ITEM;
///> Enables/disables properties that will be used for calculating the hash.
///> The properties might be combined using the bitwise 'or' operator.
enum HASH_FLAGS
{
POSITION = 0x01,
///> use coordinates relative to the parent object
REL_COORD = 0x02,
ROTATION = 0x04,
LAYER = 0x08,
NET = 0x10,
REFERENCE = 0x20,
VALUE = 0x40,
ALL = 0xff
};
/*
* Calculates hash of an EDA_ITEM.
* @param aItem is the item for which the hash will be computed.
* @return Hash value.
*/
std::size_t hash_eda( const EDA_ITEM* aItem, int aFlags = HASH_FLAGS::ALL );