Files
kicad-source-mirror/pcbnew/board_connected_item.h
Seth Hillbrand b0d0dd57ef Add clearance cache to improve clearance outline rendering performance
When displaying pad and track clearance outlines, GetOwnClearance()
was called repeatedly during rendering, re-evaluating DRC rules on
every paint refresh. With complex DRC rules, this caused significant
slowdown.

Add a lazy-evaluated cache in DRC_ENGINE keyed by (UUID, layer) that
stores clearance values. The cache is invalidated when DRC rules
change (in InitEngine) or properties change that could affect clearance
(net, layer, pad type)
2026-01-07 16:59:47 -08:00

250 lines
8.2 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright The KiCad Developers, see AUTHORS.txt for contributors.
*
* 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
*/
#ifndef BOARD_CONNECTED_ITEM_H
#define BOARD_CONNECTED_ITEM_H
#include <board_item.h>
#include <teardrop/teardrop_parameters.h>
class NETCLASS;
class NETINFO_ITEM;
class PAD;
namespace kiapi::board::types
{
class Net;
}
/**
* A base class derived from #BOARD_ITEM for items that can be connected and have a net, a
* netname, a clearance ...
*/
class BOARD_CONNECTED_ITEM : public BOARD_ITEM
{
public:
BOARD_CONNECTED_ITEM( BOARD_ITEM* aParent, KICAD_T idtype );
void SetLayer( PCB_LAYER_ID aLayer ) override;
PCB_LAYER_ID GetLayer() const override { return BOARD_ITEM::GetLayer(); }
// Do not create a copy constructor & operator=.
// The ones generated by the compiler are adequate.
static inline bool ClassOf( const EDA_ITEM* aItem )
{
if( aItem == nullptr )
return false;
switch( aItem->Type() )
{
case PCB_PAD_T:
case PCB_TRACE_T:
case PCB_ARC_T:
case PCB_VIA_T:
case PCB_ZONE_T:
case PCB_SHAPE_T:
return true;
default:
return false;
}
}
///< @copydoc BOARD_ITEM::IsConnected()
bool IsConnected() const override
{
return true;
}
/**
* Return #NET_INFO object for a given item.
*/
NETINFO_ITEM* GetNet() const
{
return m_netinfo;
}
/**
* Set a NET_INFO object for the item.
*/
void SetNet( NETINFO_ITEM* aNetInfo )
{
m_netinfo = aNetInfo;
}
/**
* Assigns a net to this item from an API message. If the net does not yet exist, it will be created.
* @param aProto is the protobuf message to unpack a net from
*/
void UnpackNet( const kiapi::board::types::Net& aProto );
void PackNet( kiapi::board::types::Net* aProto ) const;
/**
* @return the net code.
*/
int GetNetCode() const;
/**
* Set net using a net code.
*
* @note Pads not on copper layers will have their net code always set to 0 (not connected).
*
* @param aNetCode is a net code for the new net. It has to exist in #NETINFO_LIST held
* by #BOARD.
* @param aNoAssert if true, do not assert that the net exists. Otherwise, item is assigned
* to the unconnected net.
* @return true on success, false if the net did not exist
*/
bool SetNetCode( int aNetCode, bool aNoAssert );
void SetNetCode( int aNetCode )
{
SetNetCode( aNetCode, false );
}
/**
* @return the full netname.
*/
wxString GetNetname() const;
/**
* @return the full netname or "<no net>" in square braces, followed by "(Not Found)" if the
* netcode is undefined.
*/
wxString GetNetnameMsg() const;
/**
* @return the short netname.
*/
const wxString& GetShortNetname() const;
/**
* @return the unescaped short netname.
*/
const wxString& GetDisplayNetname() const;
/**
* Return an item's "own" clearance in internal units.
*
* @param aLayer the layer in question.
* @param aSource [out] optionally reports the source as a user-readable string.
* @return the clearance in internal units.
*/
virtual int GetOwnClearance( PCB_LAYER_ID aLayer, wxString* aSource = nullptr ) const;
/**
* Return any clearance overrides set in the "classic" (ie: pre-rule) system.
*
* @param aSource [out] optionally reports the source as a user-readable string.
* @return the clearance in internal units.
*/
virtual std::optional<int> GetClearanceOverrides( wxString* aSource ) const
{
return std::optional<int>();
}
/**
* Return any local clearances set in the "classic" (ie: pre-rule) system.
*
* @return the clearance (if any is specified) in internal units.
*/
virtual std::optional<int> GetLocalClearance() const
{
return std::optional<int>();
}
/**
* Return any local clearances set in the "classic" (ie: pre-rule) system.
*
* @param aSource [out] optionally reports the source as a user-readable string.
* @return the clearance (if any is specified) in internal units.
*/
virtual std::optional<int> GetLocalClearance( wxString* aSource ) const
{
return std::optional<int>();
}
/**
* Return the #NETCLASS for this item.
*
* @note Do **not** return a std::shared_ptr from this. It is used heavily in DRC, and the
* std::shared_ptr stuff shows up large in performance profiling.
*/
virtual NETCLASS* GetEffectiveNetClass() const;
/**
* Returns the name of the effective netclass. Primarily for the use of the property system.
*/
wxString GetNetClassName() const;
void SetLocalRatsnestVisible( bool aVisible ) { m_localRatsnestVisible = aVisible; }
bool GetLocalRatsnestVisible() const { return m_localRatsnestVisible; }
TEARDROP_PARAMETERS& GetTeardropParams() { return m_teardropParams; }
const TEARDROP_PARAMETERS& GetTeardropParams() const { return m_teardropParams; }
void SetTeardropsEnabled( bool aEnable ) { m_teardropParams.m_Enabled = aEnable; }
bool GetTeardropsEnabled() const { return m_teardropParams.m_Enabled; }
void SetTeardropBestLengthRatio( double aRatio ) { m_teardropParams.m_BestLengthRatio = aRatio; }
double GetTeardropBestLengthRatio() const { return m_teardropParams.m_BestLengthRatio; }
void SetTeardropMaxLength( int aMaxLength ) { m_teardropParams.m_TdMaxLen = aMaxLength; }
int GetTeardropMaxLength() const { return m_teardropParams.m_TdMaxLen; }
void SetTeardropBestWidthRatio( double aRatio ) { m_teardropParams.m_BestWidthRatio = aRatio; }
double GetTeardropBestWidthRatio() const { return m_teardropParams.m_BestWidthRatio; }
void SetTeardropMaxWidth( int aMaxWidth ) { m_teardropParams.m_TdMaxWidth = aMaxWidth; }
int GetTeardropMaxWidth() const { return m_teardropParams.m_TdMaxWidth; }
void SetTeardropCurved( bool aCurve ) { m_teardropParams.m_CurvedEdges = aCurve; }
bool GetTeardropCurved() const { return m_teardropParams.m_CurvedEdges; }
void SetTeardropPreferZoneConnections( bool aPrefer ) { m_teardropParams.m_TdOnPadsInZones = !aPrefer; }
bool GetTeardropPreferZoneConnections() const { return !m_teardropParams.m_TdOnPadsInZones; }
void SetTeardropAllowSpanTwoTracks( bool aAllow ) { m_teardropParams.m_AllowUseTwoTracks = aAllow; }
bool GetTeardropAllowSpanTwoTracks() const { return m_teardropParams.m_AllowUseTwoTracks; }
void SetTeardropMaxTrackWidth( double aRatio ) { m_teardropParams.m_WidthtoSizeFilterRatio = aRatio; }
double GetTeardropMaxTrackWidth() const { return m_teardropParams.m_WidthtoSizeFilterRatio; }
protected:
/// Store all information about the net that item belongs to.
NETINFO_ITEM* m_netinfo;
/// Not all BOARD_CONNECTED_ITEMs support teardrops, but we want those that do to share a
/// single section in the property inspector.
TEARDROP_PARAMETERS m_teardropParams;
private:
bool m_localRatsnestVisible;
};
#endif // BOARD_CONNECTED_ITEM_H