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kicad-source/common/plotters/HPGL_plotter.cpp
jean-pierre charras 91dfa79a67 Plot pad outlines on Fab files: fix many issues. 
Depending on plotter type and pad type, the plotted shapes were not always the outlines,
but a outline inside the pad shape (due to legacy reasons).
In many cases the plotted shape was in fact incorrect.
(only noticeable for very small pads)
Now the actual pad outlines are plotted without modification.
Fixes #11484
https://gitlab.com/kicad/code/kicad/issues/11484
2022-04-28 12:42:43 +02:00

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2020-2022 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
*/
/**
* @file HPGL_plotter.cpp
* @brief KiCad plotter for HPGL file format.
* Since this plot engine is mostly intended for import in external programs,
* sadly HPGL/2 isn't supported a lot... some of the primitives use overlapped
* strokes to fill the shape.
*/
/* Some HPGL commands:
* Note: the HPGL unit is 25 micrometers
* All commands MUST be terminated by a semi-colon or a linefeed.
* Spaces can NOT be substituted for required commas in the syntax of a command.
*
*
* AA (Arc Absolute): Angle is a floating point # (requires non integer value)
* Draws an arc with the center at (X,Y).
* A positive angle creates a counter-clockwise arc.
* If the chord angle is specified,
* this will be the number of degrees used for stepping around the arc.
* If no value is given then a default value of five degrees is used.
* AA x, y, a {,b};
*
* AR (Arc Relative):
* AR Dx, Dy, a {, b};
*
* CA (Alternate Character Set):
* CA {n};
*
* CI (Circle):
* CI r {,b};
*
* CP (Character Plot):
* CP {h, v};
* h [-127.9999 .. 127.9999] Anzahl der Zeichen horizontal
* v [-127.9999 .. 127.9999] Anzahl der Zeichen vertikal
*
* CS (Standard Character Set):
* CS {n};
*
* DR (Relative Direction for Label Text):
* DR s, a;
*
* DI (Absolute Direction for Label Text):
* DI {s, a};
*
* DT (Define Terminator - this character becomes unavailable except to terminate a label string.
* Default is ^C control-C):
* DT t;
*
* EA (rEctangle Absolute - Unfilled, from current position to diagonal x,y):
* EA x, y;
*
* ER (rEctangle Relative - Unfilled, from current position to diagonal x,y):
* ER x,y;
*
* FT (Fill Type):
* FT {s {,l {a}}};
*
* IM (Input Mask):
* IM {f};
*
* IN (Initialize): This command instructs the controller to begin processing the HPGL plot file.
* Without this, the commands in the file are received but never executed.
* If multiple IN s are found during execution of the file,
* the controller performs a Pause/Cancel operation.
* All motion from the previous job, yet to be executed, is lost,
* and the new information is executed.
* IN;
*
* IP Input P1 and P2:
* IP {P1x, P1y {, P2x, P2y}};
*
* IW (Input Window):
* IW {XUL, YUL, XOR, YOR};
*
* LB (Label):
* LB c1 .. cn t;
*
* PA (Plot Absolute): Moves to an absolute HPGL position and sets absolute mode for
* future PU and PD commands. If no arguments follow the command,
* only absolute mode is set.
* PA {x1, y1 {{PU|PD|,} ..., ..., xn, yn}};
* P1x, P1y, P2x, P2y [Integer in ASCII]
*
* PD (Pen Down): Executes <current pen> pen then moves to the requested position
* if one is specified. This position is dependent on whether absolute
* or relative mode is set. This command performs no motion in 3-D mode,
* but the outputs and feedrates are affected.
* PD {x, y};
*
* PM Polygon mode
* associated commands:
* PM2 End polygon mode
* FP Fill polygon
* EP Draw polygon outline
*
* PR (Plot Relative): Moves to the relative position specified and sets relative mode
* for future PU and PD commands.
* If no arguments follow the command, only relative mode is set.
* PR {Dx1, Dy1 {{PU|PD|,} ..., ..., Dxn, Dyn}};
*
* PS (Paper Size):
* PS {n};
*
* PT (Pen Thickness): in mm
* PT {l};
*
* PU (Pen Up): Executes <current pen> pen then moves to the requested position
* if one is specified. This position is dependent on whether absolute
* or relative mode is set.
* This command performs no motion in 3-D mode, but the outputs
* and feedrates are affected.
* PU {x, y};
*
* RA (Rectangle Absolute - Filled, from current position to diagonal x,y):
* RA x, y;
*
* RO (Rotate Coordinate System):
* RO;
*
* RR (Rectangle Relative - Filled, from current position to diagonal x,y):
* RR x, y;
*
* SA (Select Alternate Set):
* SA;
*
* SC (Scale):
* SC {Xmin, Xmax, Ymin, Ymax};
*
* SI (Absolute Character Size):
* SI b, h;
* b [-127.9999 .. 127.9999, keine 0]
* h [-127.9999 .. 127.9999, keine 0]
*
* SL (Character Slant):
* SL {a};
* a [-3.5 .. -0.5, 0.5 .. 3.5]
*
* SP (Select Pen): Selects a new pen or tool for use.
* If no pen number or a value of zero is given,
* the controller performs an EOF (end of file command).
* Once an EOF is performed, no motion is executed,
* until a new IN command is received.
* SP n;
*
* SR (Relative Character Size):
* SR {b, h};
* b [-127.9999 .. 127.9999, keine 0]
* h [-127.9999 .. 127.9999, keine 0]
*
* SS (Select Standard Set):
* SS;
*
* TL (Tick Length):
* TL {tp {, tm}};
*
* UC (User Defined Character):
* UC {i,} x1, y1, {i,} x2, y2, ... {i,} xn, yn;
*
* VS (Velocity Select):
* VS {v {, n}};
* v [1 .. 40] in cm/s
* n [1 .. 8]
*
* XT (X Tick):
* XT;
*
* YT (Y Tick):
* YT;
*/
#include <cstdio>
#include <string_utils.h>
#include <convert_basic_shapes_to_polygon.h>
#include <math/util.h> // for KiROUND
#include <trigo.h>
#include <plotters/plotter_hpgl.h>
/// Compute the distance between two VECTOR2D points.
static double dpoint_dist( const VECTOR2D& a, const VECTOR2D& b );
// The hpgl command to close a polygon def, fill it and plot outline:
// PM 2; ends the polygon definition and closes it if not closed
// FP; fills the polygon
// EP; draws the polygon outline. It usually gives a better look to the filled polygon
static const char hpgl_end_polygon_cmd[] = "PM 2; FP; EP;\n";
// HPGL scale factor (1 Plotter Logical Unit = 1/40mm = 25 micrometers)
// PLUsPERDECIMIL = (25.4 / 10000) / 0.025
static const double PLUsPERDECIMIL = 0.1016;
HPGL_PLOTTER::HPGL_PLOTTER()
: arcTargetChordLength( 0 ),
arcMinChordDegrees( 5.0, DEGREES_T ),
dashType( PLOT_DASH_TYPE::SOLID ),
useUserCoords( false ),
fitUserCoords( false ),
m_current_item( nullptr )
{
SetPenSpeed( 40 ); // Default pen speed = 40 cm/s; Pen speed is *always* in cm
SetPenNumber( 1 ); // Default pen num = 1
SetPenDiameter( 0.0 );
}
void HPGL_PLOTTER::SetViewport( const VECTOR2I& aOffset, double aIusPerDecimil,
double aScale, bool aMirror )
{
m_plotOffset = aOffset;
m_plotScale = aScale;
m_IUsPerDecimil = aIusPerDecimil;
m_iuPerDeviceUnit = PLUsPERDECIMIL / aIusPerDecimil;
// Compute the paper size in IUs.
m_paperSize = m_pageInfo.GetSizeMils();
m_paperSize.x *= 10.0 * aIusPerDecimil;
m_paperSize.y *= 10.0 * aIusPerDecimil;
m_plotMirror = aMirror;
}
void HPGL_PLOTTER::SetTargetChordLength( double chord_len )
{
arcTargetChordLength = userToDeviceSize( chord_len );
}
bool HPGL_PLOTTER::StartPlot()
{
wxASSERT( m_outputFile );
fprintf( m_outputFile, "IN;VS%d;PU;PA;SP%d;\n", penSpeed, penNumber );
// Set HPGL Pen Thickness (in mm) (useful in polygon fill command)
double penThicknessMM = userToDeviceSize( penDiameter )/40;
fprintf( m_outputFile, "PT %.1f;\n", penThicknessMM );
return true;
}
bool HPGL_PLOTTER::EndPlot()
{
wxASSERT( m_outputFile );
fputs( "PU;\n", m_outputFile );
flushItem();
sortItems( m_items );
if( m_items.size() > 0 )
{
if( useUserCoords )
{
if( fitUserCoords )
{
BOX2D bbox = m_items.front().bbox;
for( HPGL_ITEM const& item : m_items )
bbox.Merge( item.bbox );
fprintf( m_outputFile, "SC%.0f,%.0f,%.0f,%.0f;\n",
bbox.GetX(),
bbox.GetX() + bbox.GetWidth(),
bbox.GetY(),
bbox.GetY() + bbox.GetHeight() );
}
else
{
VECTOR2D pagesize_device( m_paperSize * m_iuPerDeviceUnit );
fprintf( m_outputFile, "SC%.0f,%.0f,%.0f,%.0f;\n",
0.0,
pagesize_device.x,
0.0,
pagesize_device.y );
}
}
VECTOR2I loc = m_items.begin()->loc_start;
bool pen_up = true;
PLOT_DASH_TYPE current_dash = PLOT_DASH_TYPE::SOLID;
int current_pen = penNumber;
for( HPGL_ITEM const& item : m_items )
{
if( item.loc_start != loc || pen_up )
{
if( !pen_up )
{
fputs( "PU;", m_outputFile );
pen_up = true;
}
fprintf( m_outputFile, "PA %.0f,%.0f;", item.loc_start.x, item.loc_start.y );
}
if( item.dashType != current_dash )
{
current_dash = item.dashType;
fputs( lineTypeCommand( item.dashType ), m_outputFile );
}
if( item.pen != current_pen )
{
if( !pen_up )
{
fputs( "PU;", m_outputFile );
pen_up = true;
}
fprintf( m_outputFile, "SP%d;", item.pen );
current_pen = item.pen;
}
if( pen_up && !item.lift_before )
{
fputs( "PD;", m_outputFile );
pen_up = false;
}
else if( !pen_up && item.lift_before )
{
fputs( "PU;", m_outputFile );
pen_up = true;
}
fputs( static_cast<const char*>( item.content.utf8_str() ), m_outputFile );
if( !item.pen_returns )
{
// Assume commands drop the pen
pen_up = false;
}
if( item.lift_after )
{
fputs( "PU;", m_outputFile );
pen_up = true;
}
else
{
loc = item.loc_end;
}
fputs( "\n", m_outputFile );
}
}
fputs( "PU;PA;SP0;\n", m_outputFile );
fclose( m_outputFile );
m_outputFile = nullptr;
return true;
}
void HPGL_PLOTTER::SetPenDiameter( double diameter )
{
penDiameter = diameter;
}
void HPGL_PLOTTER::Rect( const VECTOR2I& p1, const VECTOR2I& p2, FILL_T aFill, int aWidth )
{
wxASSERT( m_outputFile );
VECTOR2D p1_device = userToDeviceCoordinates( p1 );
VECTOR2D p2_device = userToDeviceCoordinates( p2 );
MoveTo( p1 );
if( aFill == FILL_T::FILLED_SHAPE )
{
startOrAppendItem( p1_device, wxString::Format( "RA %.0f,%.0f;",
p2_device.x,
p2_device.y ) );
}
startOrAppendItem( p1_device, wxString::Format( "EA %.0f,%.0f;",
p2_device.x,
p2_device.y ) );
m_current_item->loc_end = m_current_item->loc_start;
m_current_item->bbox.Merge( p2_device );
PenFinish();
}
void HPGL_PLOTTER::Circle( const VECTOR2I& aCenter, int aDiameter, FILL_T aFill, int aWidth )
{
wxASSERT( m_outputFile );
double radius = userToDeviceSize( aDiameter / 2 );
VECTOR2D center_dev = userToDeviceCoordinates( aCenter );
SetCurrentLineWidth( aWidth );
double const circumf = 2.0 * M_PI * radius;
double const target_chord_length = arcTargetChordLength;
EDA_ANGLE chord_angle = ANGLE_360 * target_chord_length / circumf;
chord_angle = std::max( arcMinChordDegrees, std::min( chord_angle, ANGLE_45 ) );
if( aFill == FILL_T::FILLED_SHAPE )
{
// Draw the filled area
MoveTo( aCenter );
startOrAppendItem( center_dev, wxString::Format( "PM 0;CI %g,%g;%s",
radius,
chord_angle.AsDegrees(),
hpgl_end_polygon_cmd ) );
m_current_item->lift_before = true;
m_current_item->pen_returns = true;
m_current_item->bbox.Merge( BOX2D( center_dev - radius,
VECTOR2D( 2 * radius, 2 * radius ) ) );
PenFinish();
}
if( radius > 0 )
{
MoveTo( aCenter );
startOrAppendItem( center_dev, wxString::Format( "CI %g,%g;",
radius,
chord_angle.AsDegrees() ) );
m_current_item->lift_before = true;
m_current_item->pen_returns = true;
m_current_item->bbox.Merge( BOX2D( center_dev - radius,
VECTOR2D( 2 * radius, 2 * radius ) ) );
PenFinish();
}
}
void HPGL_PLOTTER::PlotPoly( const std::vector<VECTOR2I>& aCornerList, FILL_T aFill, int aWidth,
void* aData )
{
if( aCornerList.size() <= 1 )
return;
// Width less than zero is occasionally used to create background-only
// polygons. Don't set that as the plotter line width, that'll cause
// trouble. Also, later, skip plotting the outline if this is the case.
if( aWidth > 0 )
{
SetCurrentLineWidth( aWidth );
}
MoveTo( aCornerList[0] );
startItem( userToDeviceCoordinates( aCornerList[0] ) );
if( aFill == FILL_T::FILLED_SHAPE )
{
// Draw the filled area
SetCurrentLineWidth( USE_DEFAULT_LINE_WIDTH );
m_current_item->content << wxString( "PM 0;\n" ); // Start polygon
for( unsigned ii = 1; ii < aCornerList.size(); ++ii )
LineTo( aCornerList[ii] );
int ii = aCornerList.size() - 1;
if( aCornerList[ii] != aCornerList[0] )
LineTo( aCornerList[0] );
m_current_item->content << hpgl_end_polygon_cmd; // Close, fill polygon and draw outlines
m_current_item->pen_returns = true;
}
else if( aWidth != 0 )
{
// Plot only the polygon outline.
for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
LineTo( aCornerList[ii] );
// Always close polygon if filled.
if( aFill != FILL_T::NO_FILL )
{
int ii = aCornerList.size() - 1;
if( aCornerList[ii] != aCornerList[0] )
LineTo( aCornerList[0] );
}
}
PenFinish();
}
void HPGL_PLOTTER::PenTo( const VECTOR2I& pos, char plume )
{
wxASSERT( m_outputFile );
if( plume == 'Z' )
{
m_penState = 'Z';
flushItem();
return;
}
VECTOR2D pos_dev = userToDeviceCoordinates( pos );
VECTOR2D lastpos_dev = userToDeviceCoordinates( m_penLastpos );
if( plume == 'U' )
{
m_penState = 'U';
flushItem();
}
else if( plume == 'D' )
{
m_penState = 'D';
startOrAppendItem( lastpos_dev, wxString::Format( "PA %.0f,%.0f;", pos_dev.x, pos_dev.y ) );
m_current_item->loc_end = pos_dev;
m_current_item->bbox.Merge( pos_dev );
}
m_penLastpos = pos;
}
void HPGL_PLOTTER::SetDash( PLOT_DASH_TYPE dashed )
{
dashType = dashed;
flushItem();
}
void HPGL_PLOTTER::ThickSegment( const VECTOR2I& start, const VECTOR2I& end,
int width, OUTLINE_MODE tracemode, void* aData )
{
wxASSERT( m_outputFile );
// Suppress overlap if pen is too big
if( penDiameter >= width )
{
MoveTo( start );
FinishTo( end );
}
else
{
segmentAsOval( start, end, width, tracemode );
}
}
void HPGL_PLOTTER::Arc( const VECTOR2I& aCenter, const EDA_ANGLE& aStartAngle,
const EDA_ANGLE& aEndAngle, int aRadius, FILL_T aFill, int aWidth )
{
if( aRadius <= 0 )
return;
double const radius_device = userToDeviceSize( aRadius );
double const circumf_device = 2.0 * M_PI * radius_device;
double const target_chord_length = arcTargetChordLength;
EDA_ANGLE chord_angle = ANGLE_360 * target_chord_length / circumf_device;
chord_angle = std::max( arcMinChordDegrees, std::min( chord_angle, ANGLE_45 ) );
VECTOR2D centre_device = userToDeviceCoordinates( aCenter );
EDA_ANGLE angle;
if( m_plotMirror )
angle = aStartAngle - aEndAngle;
else
angle = aEndAngle - aStartAngle;
angle.Normalize180();
// Calculate arc start point:
VECTOR2I cmap( aCenter.x + KiROUND( aRadius * aStartAngle.Cos() ),
aCenter.y - KiROUND( aRadius * aStartAngle.Sin() ) );
VECTOR2D cmap_dev = userToDeviceCoordinates( cmap );
startOrAppendItem( cmap_dev, wxString::Format( "AA %.0f,%.0f,%.0f,%g",
centre_device.x,
centre_device.y,
angle.AsDegrees(),
chord_angle.AsDegrees() ) );
// TODO We could compute the final position and full bounding box instead...
m_current_item->bbox.Merge( BOX2D( centre_device - radius_device,
VECTOR2D( radius_device * 2, radius_device * 2 ) ) );
m_current_item->lift_after = true;
flushItem();
}
void HPGL_PLOTTER::Arc( const VECTOR2I& aCenter, const VECTOR2I& aStart,
const VECTOR2I& aEnd,
FILL_T aFill, int aWidth, int aMaxError )
{
EDA_ANGLE startAngle( aStart - aCenter );
EDA_ANGLE endAngle( aEnd - aCenter );
int radius = ( aStart - aCenter ).EuclideanNorm();
Arc( aCenter, -endAngle, -startAngle, radius, aFill, aWidth );
}
void HPGL_PLOTTER::FlashPadOval( const VECTOR2I& aPos, const VECTOR2I& aSize,
const EDA_ANGLE& aOrient, OUTLINE_MODE aTraceMode, void* aData )
{
wxASSERT( m_outputFile );
VECTOR2I size( aSize );
EDA_ANGLE orient( aOrient );
// The pad will be drawn as an oblong shape with size.y > size.x (Oval vertical orientation 0).
if( size.x > size.y )
{
std::swap( size.x, size.y );
orient += ANGLE_90;
}
if( aTraceMode == FILLED )
{
int deltaxy = size.y - size.x; // distance between centers of the oval
FlashPadRect( aPos, VECTOR2I( size.x, deltaxy + KiROUND( penDiameter ) ), orient,
aTraceMode, aData );
VECTOR2I pt( 0, deltaxy / 2 );
RotatePoint( pt, orient );
FlashPadCircle( pt + aPos, size.x, aTraceMode, aData );
pt = VECTOR2I( 0, -deltaxy / 2 );
RotatePoint( pt, orient );
FlashPadCircle( pt + aPos, size.x, aTraceMode, aData );
}
else // Plot in outline mode.
{
sketchOval( aPos, size, orient, KiROUND( penDiameter ) );
}
}
void HPGL_PLOTTER::FlashPadCircle( const VECTOR2I& pos, int diametre,
OUTLINE_MODE trace_mode, void* aData )
{
wxASSERT( m_outputFile );
VECTOR2D pos_dev = userToDeviceCoordinates( pos );
int radius = diametre / 2;
if( trace_mode == FILLED )
{
// if filled mode, the pen diameter is removed from diameter
// to keep the pad size
radius -= KiROUND( penDiameter ) / 2;
if( radius < 0 )
radius = 0;
}
double rsize = userToDeviceSize( radius );
if( trace_mode == FILLED ) // Plot in filled mode.
{
// A filled polygon uses always the current point to start the polygon.
// Gives a correct current starting point for the circle
MoveTo( VECTOR2I( pos.x + radius, pos.y ) );
// Plot filled area and its outline
startOrAppendItem( userToDeviceCoordinates( VECTOR2I( pos.x + radius, pos.y ) ),
wxString::Format( "PM 0; PA %.0f,%.0f;CI %.0f;%s",
pos_dev.x, pos_dev.y, rsize, hpgl_end_polygon_cmd ) );
m_current_item->lift_before = true;
m_current_item->pen_returns = true;
}
else
{
// Draw outline only:
startOrAppendItem( pos_dev, wxString::Format( "CI %.0f;", rsize ) );
m_current_item->lift_before = true;
m_current_item->pen_returns = true;
}
PenFinish();
}
void HPGL_PLOTTER::FlashPadRect( const VECTOR2I& aPos, const VECTOR2I& aPadSize,
const EDA_ANGLE& aOrient, OUTLINE_MODE aTraceMode, void* aData )
{
// Build rect polygon:
std::vector<VECTOR2I> corners;
int dx = aPadSize.x / 2;
int dy = aPadSize.y / 2;
if( aTraceMode == FILLED )
{
// in filled mode, the pen diameter is removed from size
// to compensate the extra size due to this pen size
dx -= KiROUND( penDiameter ) / 2;
dx = std::max( dx, 0);
dy -= KiROUND( penDiameter ) / 2;
dy = std::max( dy, 0);
}
corners.emplace_back( - dx, - dy );
corners.emplace_back( - dx, + dy );
corners.emplace_back( + dx, + dy );
corners.emplace_back( + dx, - dy );
// Close polygon
corners.emplace_back( - dx, - dy );
for( unsigned ii = 0; ii < corners.size(); ii++ )
{
RotatePoint( corners[ii], aOrient );
corners[ii] += aPos;
}
PlotPoly( corners, aTraceMode == FILLED ? FILL_T::FILLED_SHAPE : FILL_T::NO_FILL );
}
void HPGL_PLOTTER::FlashPadRoundRect( const VECTOR2I& aPadPos, const VECTOR2I& aSize,
int aCornerRadius, const EDA_ANGLE& aOrient,
OUTLINE_MODE aTraceMode, void* aData )
{
SHAPE_POLY_SET outline;
VECTOR2I size = aSize;
if( aTraceMode == FILLED )
{
// In filled mode, the pen diameter is removed from size to keep the pad size.
size.x -= KiROUND( penDiameter ) / 2;
size.x = std::max( size.x, 0);
size.y -= KiROUND( penDiameter ) / 2;
size.y = std::max( size.y, 0);
// keep aCornerRadius to a value < min size x,y < 2:
aCornerRadius = std::min( aCornerRadius, std::min( size.x, size.y ) /2 );
}
TransformRoundChamferedRectToPolygon( outline, aPadPos, size, aOrient, aCornerRadius, 0.0, 0,
0, GetPlotterArcHighDef(), ERROR_INSIDE );
// TransformRoundRectToPolygon creates only one convex polygon
std::vector<VECTOR2I> cornerList;
SHAPE_LINE_CHAIN& poly = outline.Outline( 0 );
cornerList.reserve( poly.PointCount() );
for( int ii = 0; ii < poly.PointCount(); ++ii )
cornerList.emplace_back( poly.CPoint( ii ).x, poly.CPoint( ii ).y );
if( cornerList.back() != cornerList.front() )
cornerList.push_back( cornerList.front() );
PlotPoly( cornerList, aTraceMode == FILLED ? FILL_T::FILLED_SHAPE : FILL_T::NO_FILL );
}
void HPGL_PLOTTER::FlashPadCustom( const VECTOR2I& aPadPos, const VECTOR2I& aSize,
const EDA_ANGLE& aOrient, SHAPE_POLY_SET* aPolygons,
OUTLINE_MODE aTraceMode, void* aData )
{
std::vector<VECTOR2I> cornerList;
for( int cnt = 0; cnt < aPolygons->OutlineCount(); ++cnt )
{
SHAPE_LINE_CHAIN& poly = aPolygons->Outline( cnt );
cornerList.clear();
cornerList.reserve( poly.PointCount() );
for( int ii = 0; ii < poly.PointCount(); ++ii )
cornerList.emplace_back( poly.CPoint( ii ).x, poly.CPoint( ii ).y );
if( cornerList.back() != cornerList.front() )
cornerList.push_back( cornerList.front() );
PlotPoly( cornerList, aTraceMode == FILLED ? FILL_T::FILLED_SHAPE : FILL_T::NO_FILL );
}
}
void HPGL_PLOTTER::FlashPadTrapez( const VECTOR2I& aPadPos, const VECTOR2I* aCorners,
const EDA_ANGLE& aPadOrient, OUTLINE_MODE aTraceMode,
void* aData )
{
std::vector<VECTOR2I> cornerList;
cornerList.reserve( 5 );
for( int ii = 0; ii < 4; ii++ )
{
VECTOR2I coord( aCorners[ii] );
RotatePoint( coord, aPadOrient );
coord += aPadPos;
cornerList.push_back( coord );
}
// Close polygon
cornerList.push_back( cornerList.front() );
PlotPoly( cornerList, aTraceMode == FILLED ? FILL_T::FILLED_SHAPE : FILL_T::NO_FILL );
}
void HPGL_PLOTTER::FlashRegularPolygon( const VECTOR2I& aShapePos, int aRadius, int aCornerCount,
const EDA_ANGLE& aOrient, OUTLINE_MODE aTraceMode,
void* aData )
{
// Do nothing
wxASSERT( 0 );
}
bool HPGL_PLOTTER::startItem( const VECTOR2D& location )
{
return startOrAppendItem( location, wxEmptyString );
}
void HPGL_PLOTTER::flushItem()
{
m_current_item = nullptr;
}
bool HPGL_PLOTTER::startOrAppendItem( const VECTOR2D& location, wxString const& content )
{
if( m_current_item == nullptr )
{
HPGL_ITEM item;
item.loc_start = location;
item.loc_end = location;
item.bbox = BOX2D( location );
item.pen = penNumber;
item.dashType = dashType;
item.content = content;
m_items.push_back( item );
m_current_item = &m_items.back();
return true;
}
else
{
m_current_item->content << content;
return false;
}
}
void HPGL_PLOTTER::sortItems( std::list<HPGL_ITEM>& items )
{
if( items.size() < 2 )
return;
std::list<HPGL_ITEM> target;
// Plot items are sorted to improve print time on mechanical plotters. This
// means
// 1) Avoid excess pen-switching - once a pen is selected, keep printing
// with it until no more items using that pen remain.
// 2) Within the items for one pen, avoid bouncing back and forth around
// the page; items should be sequenced with nearby items.
//
// This is essentially a variant of the Traveling Salesman Problem where
// the cities are themselves edges that must be traversed. This is of course
// a famously NP-Hard problem and this particular variant has a monstrous
// number of "cities". For now, we're using a naive nearest-neighbor search,
// which is less than optimal but (usually!) better than nothing, very
// simple to implement, and fast enough.
//
// Items are moved one at a time from `items` into `target`, searching
// each time for the first one matching the above criteria. Then, all of
// `target` is moved back into `items`.
// Get the first one started
HPGL_ITEM last_item = items.front();
items.pop_front();
target.emplace_back( last_item );
while( !items.empty() )
{
auto best_it = items.begin();
double best_dist = dpoint_dist( last_item.loc_end, best_it->loc_start );
for( auto search_it = best_it; search_it != items.end(); search_it++ )
{
// Immediately forget an item as "best" if another one is a better pen match
if( best_it->pen != last_item.pen && search_it->pen == last_item.pen )
{
best_it = search_it;
continue;
}
double const dist = dpoint_dist( last_item.loc_end, search_it->loc_start );
if( dist < best_dist )
{
best_it = search_it;
best_dist = dist;
continue;
}
}
target.emplace_back( *best_it );
last_item = *best_it;
items.erase( best_it );
}
items.splice( items.begin(), target );
}
const char* HPGL_PLOTTER::lineTypeCommand( PLOT_DASH_TYPE linetype )
{
switch( linetype )
{
case PLOT_DASH_TYPE::DASH: return "LT 2 4 1;";
case PLOT_DASH_TYPE::DOT: return "LT 1 1 1;";
case PLOT_DASH_TYPE::DASHDOT: return "LT 4 6 1;";
case PLOT_DASH_TYPE::DASHDOTDOT: return "LT 7 8 1;";
default: return "LT;";
}
}
static double dpoint_dist( const VECTOR2D& a, const VECTOR2D& b )
{
VECTOR2D diff = a - b;
return sqrt( diff.x * diff.x + diff.y * diff.y );
}
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