kicad/pcbnew/teardrop/teardrop_parameters.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2021 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2022 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 TEARDROP_PARAMS_H
#define TEARDROP_PARAMS_H
#include <string>
#include <vector>
#include <base_units.h>
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// IDs for targets when creating teardrops
enum TARGET_TD
{
TARGET_UNKNOWN = -1,
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TARGET_ROUND = 0,
TARGET_RECT = 1,
TARGET_TRACK = 2,
TARGET_COUNT = 3
};
/**
* TEARDROP_PARAMETARS is a helper class to handle parameters needed to build teardrops
* for a board
* these parameters are sizes and filters
*/
class TEARDROP_PARAMETERS
{
public:
TEARDROP_PARAMETERS( TARGET_TD aTdType ):
m_TdType( aTdType ),
m_TdMaxLen( pcbIUScale.mmToIU( 1.0 ) ),
m_TdMaxHeight( pcbIUScale.mmToIU( 2.0 ) ),
m_LengthRatio( 0.5),
m_HeightRatio( 1.0 ),
m_CurveSegCount( 0 ),
m_WidthtoSizeFilterRatio( 0.9 )
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{
}
/**
* Set max allowed length and height for teardrops in IU.
* a value <= 0 disable the constraint
*/
void SetTeardropMaxSize( int aMaxLen, int aMaxHeight )
{
m_TdMaxLen = aMaxLen;
m_TdMaxHeight = aMaxHeight;
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}
/**
* Set prefered length and height ratio for teardrops
* the prefered length and height are VIAPAD width * aLenghtRatio and
* VIAPAD width * aHeightRatio
*/
void SetTeardropSizeRatio( double aLenghtRatio = 0.5, double aHeightRatio = 1.0 )
{
m_LengthRatio = aLenghtRatio;
m_HeightRatio = aHeightRatio;
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}
/**
* Set the params for teardrop using curved shape
* note: if aCurveSegCount is < 3, the shape uses a straight line
*/
void SetTeardropCurvedPrm( int aCurveSegCount = 0 )
{
m_CurveSegCount = aCurveSegCount;
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}
bool IsCurved() const { return m_CurveSegCount > 2; }
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public:
TARGET_TD m_TdType; /// the type of target for these parameters
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/// max allowed length for teardrops in IU. <= 0 to disable
int m_TdMaxLen;
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/// max allowed height for teardrops in IU. <= 0 to disable
int m_TdMaxHeight;
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/// The length of a teardrop as ratio between length and size of pad/via
double m_LengthRatio;
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/// The height of a teardrop as ratio between height and size of pad/via
double m_HeightRatio;
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/// number of segments to build the curved sides of a teardrop area
/// must be > 2. for values <= 2 a straight line is used
int m_CurveSegCount;
/// The ratio (H/D) between the via/pad size and the track width max value to create a teardrop
/// 1.0 (100 %) always creates a teardrop, 0.0 (0%) never create a teardrop
double m_WidthtoSizeFilterRatio;
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};
/**
* TEARDROP_PARAMETERS_LIST is a helper class to handle the list of TEARDROP_PARAMETERS
* needed to build teardrops of different shapes (round, rect, tracks)
*/
class TEARDROP_PARAMETERS_LIST
{
std::vector<TEARDROP_PARAMETERS> m_params_list;
public:
/// True to create teardrops for vias and pads with holes
bool m_TargetViasPads;
/// True to create teardrops for pads without holes (SMD and others
bool m_TargetPadsWithNoHole;
/// True to create teardrops at the end of a track connected to the end of
/// another track having a different width
bool m_TargetTrack2Track;
/// True to create teardrops for round shapes only
bool m_UseRoundShapesOnly;
/// True to create teardrops using 2 track segments if the first in too small
bool m_AllowUseTwoTracks;
/// the number of segments to apprximate a curve (Bezier curve) in a teardrop
/// Must be > 2, otherwise a line is used
int m_CurveSegCount;
/// Pads inside a zone of the same net do not have teardrop added.
/// if this option is true, these pads will have teardrop added.
bool m_TdOnPadsInZones;
public:
TEARDROP_PARAMETERS_LIST() :
m_TargetViasPads( true ),
m_TargetPadsWithNoHole( true ),
m_TargetTrack2Track( false ),
m_UseRoundShapesOnly( false ),
m_AllowUseTwoTracks( true ),
m_CurveSegCount( 5 ),
m_TdOnPadsInZones( false )
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{
m_params_list.emplace_back( TARGET_ROUND ); // parameters for TARGET_ROUND
m_params_list.emplace_back( TARGET_RECT ); // parameters for TARGET_RECT
m_params_list.emplace_back( TARGET_TRACK ); // parameters for TARGET_TRACK
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}
/**
* @return the TEARDROP_PARAMETERS for aTdType target item
*/
TEARDROP_PARAMETERS* GetParameters( TARGET_TD aTdType )
{
return &m_params_list.at( aTdType );
}
/**
* @return the number of TEARDROP_PARAMETERS item. Should be 3
*/
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size_t GetParametersCount()
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{
return m_params_list.size();
}
};
/**
* @return the canonical name of a target type of a TEARDROP_PARAMETERS
* @param aTdType is the target type
*/
std::string GetTeardropTargetCanonicalName( TARGET_TD aTdType );
/**
* @return the target type from a canonical name of a TEARDROP_PARAMETERS
* @param aTargetName is the canonical name
*/
TARGET_TD GetTeardropTargetTypeFromCanonicalName( const std::string& aTargetName );
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#endif // ifndef TEARDROP_PARAMS_H