kicad/common/plotters/plotter_gerber.h

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2020 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2016-2020 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 3 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, see <http://www.gnu.org/licenses/>.
 */

/**
 * Plotting engine (Gerber)
 *
 * @file plotter_gerber.h
 */

#pragma once

#include <vector>
#include <math/box2.h>
#include <eda_item.h>       // FILL_TYPE

#include <plotter.h>
#include "gbr_plotter_apertures.h"


class GERBER_PLOTTER : public PLOTTER
{
public:
    GERBER_PLOTTER();

    virtual PLOT_FORMAT GetPlotterType() const override
    {
        return PLOT_FORMAT::GERBER;
    }

    static wxString GetDefaultFileExtension()
    {
        return wxString( wxT( "gbr" ) );
    }

    /**
     * Function StartPlot
     * Write GERBER header to file
     * initialize global variable g_Plot_PlotOutputFile
     */
    virtual bool StartPlot() override;
    virtual bool EndPlot() override;
    virtual void SetCurrentLineWidth( int width, void* aData = NULL ) override;

    // RS274X has no dashing, nor colours
    virtual void SetDash( PLOT_DASH_TYPE dashed ) override
    {
    }

    virtual void SetColor( COLOR4D color ) override {}
    // Currently, aScale and aMirror are not used in gerber plotter
    virtual void SetViewport( const wxPoint& aOffset, double aIusPerDecimil,
                          double aScale, bool aMirror ) override;

    // Basic plot primitives
    virtual void Rect( const wxPoint& p1, const wxPoint& p2, FILL_TYPE fill,
                       int width = USE_DEFAULT_LINE_WIDTH ) override;
    virtual void Circle( const wxPoint& pos, int diametre, FILL_TYPE fill,
                         int width = USE_DEFAULT_LINE_WIDTH ) override;
    virtual void Arc( const wxPoint& aCenter, double aStAngle, double aEndAngle,
                      int aRadius, FILL_TYPE aFill, int aWidth = USE_DEFAULT_LINE_WIDTH ) override;

    // These functions plot an item and manage X2 gerber attributes
    virtual void ThickSegment( const wxPoint& start, const wxPoint& end, int width,
                               OUTLINE_MODE tracemode, void* aData ) override;

    virtual void ThickArc( const wxPoint& centre, double StAngle, double EndAngle,
                           int rayon, int width, OUTLINE_MODE tracemode, void* aData ) override;
    virtual void ThickRect( const wxPoint& p1, const wxPoint& p2, int width,
                            OUTLINE_MODE tracemode, void* aData ) override;
    virtual void ThickCircle( const wxPoint& pos, int diametre, int width,
                              OUTLINE_MODE tracemode, void* aData ) override;
    virtual void FilledCircle( const wxPoint& pos, int diametre,
                              OUTLINE_MODE tracemode, void* aData ) override;

    /**
     * Gerber polygon: they can (and *should*) be filled with the
     * appropriate G36/G37 sequence
     */
    virtual void PlotPoly( const std::vector< wxPoint >& aCornerList,
                           FILL_TYPE aFill, int aWidth = USE_DEFAULT_LINE_WIDTH,
                           void* aData = nullptr ) override;

    virtual void PenTo( const wxPoint& pos, char plume ) override;

    virtual void Text( const wxPoint&              aPos,
                       const COLOR4D               aColor,
                       const wxString&             aText,
                       double                      aOrient,
                       const wxSize&               aSize,
                       enum EDA_TEXT_HJUSTIFY_T    aH_justify,
                       enum EDA_TEXT_VJUSTIFY_T    aV_justify,
                       int                         aWidth,
                       bool                        aItalic,
                       bool                        aBold,
                       bool                        aMultilineAllowed = false,
                       void* aData = NULL ) override;

    /**
     * Filled circular flashes are stored as apertures
     */
    virtual void FlashPadCircle( const wxPoint& pos, int diametre,
                                 OUTLINE_MODE trace_mode, void* aData ) override;

    virtual void FlashPadOval( const wxPoint& aPadPos, const wxSize& size, double orient,
                               OUTLINE_MODE trace_mode, void* aData ) override;

    virtual void FlashPadRect( const wxPoint& aPadPos, const wxSize& size,
                               double orient, OUTLINE_MODE trace_mode, void* aData ) override;

    virtual void FlashPadRoundRect( const wxPoint& aPadPos, const wxSize& aSize,
                                    int aCornerRadius, double aOrient,
                                    OUTLINE_MODE aTraceMode, void* aData ) override;
    virtual void FlashPadCustom( const wxPoint& aPadPos, const wxSize& aSize,
                                 double aPadOrient, SHAPE_POLY_SET* aPolygons,
                                 OUTLINE_MODE aTraceMode, void* aData ) override;

    virtual void FlashPadTrapez( const wxPoint& aPadPos, const wxPoint *aCorners,
                            double aPadOrient, OUTLINE_MODE aTraceMode, void* aData ) override;

    virtual void FlashRegularPolygon( const wxPoint& aShapePos, int aDiameter, int aCornerCount,
                            double aOrient, OUTLINE_MODE aTraceMode, void* aData ) override;

    /**
     * flash a chamfered round rect pad.
     * @param aShapePos = position of the pad shape
     * @param aPadSize = size of the rectangle
     * @param aCornerRadius = radius of rounded corners
     * @param aChamferRatio = chamfer value (ratio < 0.5 between smallest size and chamfer)
     * @param aChamferPositions = identifier of the corners to chamfer:
     *  0 = no chamfer
     *  1 = TOP_LEFT
     *  2 = TOP_RIGHT
     *  4 = BOTTOM_LEFT
     *  8 = BOTTOM_RIGHT
     * @param aPadOrient = rotation in 0.1 degrees of the shape
     * @param aPlotMode = FILLED or SKETCH
     * @param aData = a reference to Gerber attributes descr
     */
    void FlashPadChamferRoundRect( const wxPoint& aShapePos, const wxSize& aPadSize,
                                   int aCornerRadius, double aChamferRatio,
                                   int aChamferPositions,
                                   double aPadOrient, OUTLINE_MODE aPlotMode, void* aData );

    /**
     * Plot a Gerber region: similar to PlotPoly but plot only filled polygon,
     * and add the TA.AperFunction if aData contains this attribute, and clear it
     * after plotting
     */
    void PlotGerberRegion( const std::vector< wxPoint >& aCornerList,
                           void * aData = NULL );

    /**
     * Change the plot polarity and begin a new layer
     * Used to 'scratch off' silk screen away from solder mask
     */
    virtual void SetLayerPolarity( bool aPositive ) override;

    /**
     * Function SetGerberCoordinatesFormat
     * selection of Gerber units and resolution (number of digits in mantissa)
     * @param aResolution = number of digits in mantissa of coordinate
     *                      use 5 or 6 for mm and 6 or 7 for inches
     *                      do not use value > 6 (mm) or > 7 (in) to avoid overflow
     * @param aUseInches = true to use inches, false to use mm (default)
     *
     * Should be called only after SetViewport() is called
     */
    virtual void SetGerberCoordinatesFormat( int aResolution, bool aUseInches = false ) override;

    void UseX2format( bool aEnable ) { m_useX2format = aEnable; }
    void UseX2NetAttributes( bool aEnable ) { m_useNetAttributes = aEnable; }

    /** Disable Aperture Macro (AM) command, only for broken Gerber Readers
     * Regions will be used instead of AM shapes to draw complex shapes
     * @param aDisable = true to disable Aperture Macro (AM) command.
     */
    void DisableApertMacros( bool aDisable ) { m_gerberDisableApertMacros = aDisable; }

    /**
     * calling this function allows one to define the beginning of a group
     * of drawing items (used in X2 format with netlist attributes)
     * @param aData can define any parameter
     */
    virtual void StartBlock( void* aData ) override;

    /**
     * calling this function allows one to define the end of a group of drawing
     * items the group is started by StartBlock()
     * (used in X2 format with netlist attributes)
     * @param aData can define any parameter
     */
    virtual void EndBlock( void* aData ) override;

    /** Remove (clear) all attributes from object attributes dictionary (TO. and TA commands)
     * similar to clearNetAttribute(), this is an unconditional reset of TO. and TA. attributes
     */
    void ClearAllAttributes();

    /**
     * @return a index to the aperture in aperture list which meets the size and type of tool
     * if the aperture does not exist, it is created and entered in aperture list
     * @param aSize = the size of tool
     * @param aRadius = the radius used for some shapes tool (oval, roundrect macros)
     * @param aRotDegree = the rotation of tool (primitives round, oval rect accept only 0.0)
     * @param aType = the type ( shape ) of tool
     * @param aApertureAttribute = an aperture attribute of the tool (a tool can have only one attribute)
     * 0 = no specific attribute
     */
    int GetOrCreateAperture( const wxSize& aSize, int aRadius, double aRotDegree,
                    APERTURE::APERTURE_TYPE aType, int aApertureAttribute );

    /**
     * @return a index to the aperture in aperture list which meets the data and type of tool
     * if the aperture does not exist, it is created and entered in aperture list
     * @param aCorners = the corner list
     * @param aRotDegree = the rotation of tool
     * @param aType = the type ( shape ) of tool that can manage a list of corners (polygon)
     * @param aApertureAttribute = an aperture attribute of the tool (a tool can have only one attribute)
     * 0 = no specific attribute
     */
    int GetOrCreateAperture( const std::vector<wxPoint>& aCorners, double aRotDegree,
                    APERTURE::APERTURE_TYPE aType, int aApertureAttribute );

protected:
    /** Plot a round rect (a round rect shape in fact) as a Gerber region
     * using lines and arcs for corners
     * @param aRectCenter is the center of the rectangle
     * @param aSize is the size of the rectangle
     * @param aCornerRadius is the radius of the corners
     * @param aOrient is the rotation of the rectangle
     * Note: only the G36 ... G37 region is created.
     */
    void plotRoundRectAsRegion( const wxPoint& aRectCenter, const wxSize& aSize,
                                int aCornerRadius, double aOrient );
    /**
     * Plot a Gerber arc.
     * if aPlotInRegion = true, the current pen position will not be
     * initialized to the arc start position, and therefore the arc can be used
     * to define a region outline item
     * a line will be created from current ^position to arc start point
     * if aPlotInRegion = false, the current pen position will be initialized
     * to the arc start position, to plot an usual arc item
     * The line thickness is not initialized in plotArc, and must be initialized
     * before calling it if needed.
     */
    void plotArc( const wxPoint& aCenter, double aStAngle, double aEndAngle,
                      int aRadius, bool aPlotInRegion );

    /**
     * Pick an existing aperture or create a new one, matching the
     * size, type and attributes.
     * write the DCode selection on gerber file
     */
    void selectAperture( const wxSize& aSize, int aRadius, double aRotDegree,
                         APERTURE::APERTURE_TYPE aType,
                         int aApertureAttribute );
    /**
     * Pick an existing aperture or create a new one, matching the
     * aDiameter, aPolygonRotation, type and attributes.
     * It apply only to apertures with type = AT_REGULAR_POLY3 to AT_REGULAR_POLY12
     * write the DCode selection on gerber file
     */
    void selectAperture( const std::vector<wxPoint>& aCorners, double aPolygonRotation,
                         APERTURE::APERTURE_TYPE aType, int aApertureAttribute );

    /**
     * Pick an existing aperture or create a new one, matching the
     * corner list, aRotDegree, type and attributes.
     * It apply only to apertures managing a polygon that differs from AT_REGULAR_POLY3
     * to AT_REGULAR_POLY12 (for instance APER_MACRO_TRAPEZOID )
     * write the DCode selection on gerber file
     */
    void selectAperture( int aDiameter, double aRotDegree,
                         APERTURE::APERTURE_TYPE aType, int aApertureAttribute );

    /**
     * Emit a D-Code record, using proper conversions
     * to format a leading zero omitted gerber coordinate
     * (for n decimal positions, see header generation in start_plot
     */
    void emitDcode( const DPOINT& pt, int dcode );

    /**
     * print a Gerber net attribute object record.
     * In a gerber file, a net attribute is owned by a graphic object
     * formatNetAttribute must be called before creating the object
     * @param aData contains the data to format.
     * the generated string depends on the type of netlist info
     */
    void formatNetAttribute( GBR_NETLIST_METADATA* aData );

    /**
     * clear a Gerber net attribute record (clear object attribute dictionary)
     * and output the clear object attribute dictionary command to gerber file
     * has effect only if a net attribute is stored in m_objectAttributesDictionary
     */
    void clearNetAttribute();

    // the attributes dictionary created/modifed by %TO, attached to objects, when they are created
    // by D01, D03, G36/G37 commands
    // standard attributes are .P, .C and .N
    // this is used by gerber readers when creating a new object. Cleared by %TD command
    // Note: m_objectAttributesDictionary can store more than one attribute
    // the string stores the line(s) actually written to the gerber file
    // it can store a .P, .C or .N attribute, or 2 or 3 attributes, separated by a \n char (EOL)
    std::string   m_objectAttributesDictionary;

    // The last aperture attribute generated (only one aperture attribute can be set)
    int           m_apertureAttribute;

    FILE* workFile;
    FILE* finalFile;
    wxString m_workFilename;

    /**
     * Generate the table of D codes
     */
    void writeApertureList();

    std::vector<APERTURE> m_apertures;  // The list of available apertures
    int     m_currentApertureIdx;       // The index of the current aperture in m_apertures
    bool    m_hasApertureRoundRect;     // true is at least one round rect aperture is in use
    bool    m_hasApertureRotOval;       // true is at least one oval rotated aperture is in use
    bool    m_hasApertureRotRect;       // true is at least one rect. rotated aperture is in use
    bool    m_hasApertureOutline4P;     // true is at least one 4 corners outline (free polygon
                                        // with 4 corners) aperture is in use
    bool    m_hasApertureChamferedRect; // true is at least one chamfered rect is in use
                                        // (with no rounded corner)

    bool    m_gerberUnitInch;          // true if the gerber units are inches, false for mm
    int     m_gerberUnitFmt;           // number of digits in mantissa.
                                       // usually 6 in Inches and 5 or 6  in mm
    bool    m_gerberDisableApertMacros; // True to disable Aperture Macro (AM) command,
                                       // for broken Gerber Readers
                                       // Regions will be used instead of AM shapes
    bool    m_useX2format;             // Add X2 file header attributes.  If false, attributes
                                       // will be added as comments.
    bool    m_useNetAttributes;        // In recent gerber files, netlist info can be added.
                                       // It will be added if this param is true, using X2 or
                                       // X1 format

    // A list of aperture macros defined "on the fly" because the number of parameters is not
    // defined: this is the case of the macro using the primitive 4 to create a polygon.
    // The number of vertices is not known for free polygonal shapes, and an aperture macro
    // must be created for each specific polygon
    APER_MACRO_FREEPOLY_LIST m_am_freepoly_list;
};