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kicad/common/plotters/HPGL_plotter.cpp

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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) 2017 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: specialized plotter for HPGL files 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 <fctsys.h>
#include <gr_basic.h>
#include <trigo.h>
#include <eda_base_frame.h>
#include <base_struct.h>
#include <plotter.h>
#include <macros.h>
#include <kicad_string.h>
#include <convert_basic_shapes_to_polygon.h>
// 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()
{
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 wxPoint& aOffset, double aIusPerDecimil,
double aScale, bool aMirror )
{
plotOffset = aOffset;
plotScale = aScale;
m_IUsPerDecimil = aIusPerDecimil;
iuPerDeviceUnit = PLUsPERDECIMIL / aIusPerDecimil;
/* Compute the paper size in IUs */
paperSize = pageInfo.GetSizeMils();
paperSize.x *= 10.0 * aIusPerDecimil;
paperSize.y *= 10.0 * aIusPerDecimil;
SetDefaultLineWidth( 0 ); // HPGL has pen sizes instead
m_plotMirror = aMirror;
}
/**
* At the start of the HPGL plot pen speed and number are requested
*/
bool HPGL_PLOTTER::StartPlot()
{
wxASSERT( outputFile );
fprintf( outputFile, "IN;VS%d;PU;PA;SP%d;\n", penSpeed, penNumber );
// Set HPGL Pen Thickness (in mm) (usefull in polygon fill command)
double penThicknessMM = userToDeviceSize( penDiameter )/40;
fprintf( outputFile, "PT %.1f;\n", penThicknessMM );
return true;
}
/**
* HPGL end of plot: pen return and release
*/
bool HPGL_PLOTTER::EndPlot()
{
wxASSERT( outputFile );
fputs( "PU;PA;SP0;\n", outputFile );
fclose( outputFile );
outputFile = NULL;
return true;
}
void HPGL_PLOTTER::SetPenDiameter( double diameter )
{
penDiameter = diameter;
}
/**
* HPGL rectangle: fill not supported
*/
void HPGL_PLOTTER::Rect( const wxPoint& p1, const wxPoint& p2, FILL_T fill, int width )
{
wxASSERT( outputFile );
DPOINT p2dev = userToDeviceCoordinates( p2 );
MoveTo( p1 );
fprintf( outputFile, "EA %.0f,%.0f;\n", p2dev.x, p2dev.y );
PenFinish();
}
// HPGL circle
void HPGL_PLOTTER::Circle( const wxPoint& centre, int diameter, FILL_T fill,
int width )
{
wxASSERT( outputFile );
double radius = userToDeviceSize( diameter / 2 );
SetCurrentLineWidth( width );
if( fill == FILLED_SHAPE )
{
// Draw the filled area
MoveTo( centre );
fprintf( outputFile, "PM 0; CI %g;\n", radius );
fprintf( outputFile, hpgl_end_polygon_cmd ); // Close, fill polygon and draw outlines
PenFinish();
}
if( radius > 0 )
{
MoveTo( centre );
fprintf( outputFile, "CI %g;\n", radius );
PenFinish();
}
}
/**
* HPGL polygon:
*/
void HPGL_PLOTTER::PlotPoly( const std::vector<wxPoint>& aCornerList,
FILL_T aFill, int aWidth, void * aData )
{
if( aCornerList.size() <= 1 )
return;
SetCurrentLineWidth( aWidth );
MoveTo( aCornerList[0] );
if( aFill == FILLED_SHAPE )
{
// Draw the filled area
SetCurrentLineWidth( USE_DEFAULT_LINE_WIDTH );
fprintf( outputFile, "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] );
fprintf( outputFile, hpgl_end_polygon_cmd ); // Close, fill polygon and draw outlines
}
else
{
// Plot only the polygon outline.
for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
LineTo( aCornerList[ii] );
// Always close polygon if filled.
if( aFill )
{
int ii = aCornerList.size() - 1;
if( aCornerList[ii] != aCornerList[0] )
LineTo( aCornerList[0] );
}
}
PenFinish();
}
/**
* Pen control logic (remove redundant pen activations)
*/
void HPGL_PLOTTER::penControl( char plume )
{
wxASSERT( outputFile );
switch( plume )
{
case 'U':
if( penState != 'U' )
{
fputs( "PU;", outputFile );
penState = 'U';
}
break;
case 'D':
if( penState != 'D' )
{
fputs( "PD;", outputFile );
penState = 'D';
}
break;
case 'Z':
fputs( "PU;", outputFile );
penState = 'U';
penLastpos.x = -1;
penLastpos.y = -1;
break;
}
}
void HPGL_PLOTTER::PenTo( const wxPoint& pos, char plume )
{
wxASSERT( outputFile );
if( plume == 'Z' )
{
penControl( 'Z' );
return;
}
penControl( plume );
DPOINT pos_dev = userToDeviceCoordinates( pos );
if( penLastpos != pos )
fprintf( outputFile, "PA %.0f,%.0f;\n", pos_dev.x, pos_dev.y );
penLastpos = pos;
}
/**
* HPGL supports dashed lines
*/
void HPGL_PLOTTER::SetDash( int dashed )
{
wxASSERT( outputFile );
switch( dashed )
{
case PLOTDASHTYPE_DASH:
fprintf( outputFile, "LT -2 4 1;\n" );
break;
case PLOTDASHTYPE_DOT:
fprintf( outputFile, "LT -1 2 1;\n" );
break;
case PLOTDASHTYPE_DASHDOT:
fprintf( outputFile, "LT -4 6 1;\n" );
break;
default:
fputs( "LT;\n", outputFile );
}
}
void HPGL_PLOTTER::ThickSegment( const wxPoint& start, const wxPoint& end,
int width, EDA_DRAW_MODE_T tracemode, void* aData )
{
wxASSERT( outputFile );
wxPoint center;
wxSize size;
// Suppress overlap if pen is too big
if( penDiameter >= width )
{
MoveTo( start );
FinishTo( end );
}
else
segmentAsOval( start, end, width, tracemode );
}
/* Plot an arc:
* Center = center coord
* Stangl, endAngle = angle of beginning and end
* Radius = radius of the arc
* Command
* PU PY x, y; PD start_arc_X AA, start_arc_Y, angle, NbSegm; PU;
* Or PU PY x, y; PD start_arc_X AA, start_arc_Y, angle, PU;
*/
void HPGL_PLOTTER::Arc( const wxPoint& centre, double StAngle, double EndAngle, int radius,
FILL_T fill, int width )
{
wxASSERT( outputFile );
double angle;
if( radius <= 0 )
return;
DPOINT centre_dev = userToDeviceCoordinates( centre );
if( m_plotMirror )
angle = StAngle - EndAngle;
else
angle = EndAngle - StAngle;
NORMALIZE_ANGLE_180( angle );
angle /= 10;
// Calculate arc start point:
wxPoint cmap;
cmap.x = centre.x + KiROUND( cosdecideg( radius, StAngle ) );
cmap.y = centre.y - KiROUND( sindecideg( radius, StAngle ) );
DPOINT cmap_dev = userToDeviceCoordinates( cmap );
fprintf( outputFile,
"PU;PA %.0f,%.0f;PD;AA %.0f,%.0f,",
cmap_dev.x, cmap_dev.y,
centre_dev.x, centre_dev.y );
fprintf( outputFile, "%.0f", angle );
fprintf( outputFile, ";PU;\n" );
PenFinish();
}
/* Plot oval pad.
*/
void HPGL_PLOTTER::FlashPadOval( const wxPoint& pos, const wxSize& aSize, double orient,
EDA_DRAW_MODE_T trace_mode, void* aData )
{
wxASSERT( outputFile );
int deltaxy, cx, cy;
wxSize size( aSize );
/* 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 = AddAngles( orient, 900 );
}
deltaxy = size.y - size.x; // distance between centers of the oval
if( trace_mode == FILLED )
{
FlashPadRect( pos, wxSize( size.x, deltaxy + KiROUND( penDiameter ) ),
orient, trace_mode, aData );
cx = 0; cy = deltaxy / 2;
RotatePoint( &cx, &cy, orient );
FlashPadCircle( wxPoint( cx + pos.x, cy + pos.y ), size.x, trace_mode, aData );
cx = 0; cy = -deltaxy / 2;
RotatePoint( &cx, &cy, orient );
FlashPadCircle( wxPoint( cx + pos.x, cy + pos.y ), size.x, trace_mode, aData );
}
else // Plot in outline mode.
{
sketchOval( pos, size, orient, KiROUND( penDiameter ) );
}
}
/* Plot round pad or via.
*/
void HPGL_PLOTTER::FlashPadCircle( const wxPoint& pos, int diametre,
EDA_DRAW_MODE_T trace_mode, void* aData )
{
wxASSERT( outputFile );
DPOINT 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( wxPoint( pos.x+radius, pos.y ) );
// Plot filled area and its outline
fprintf( outputFile, "PM 0; PA %.0f,%.0f;CI %.0f;%s",
pos_dev.x, pos_dev.y, rsize, hpgl_end_polygon_cmd );
}
else
{
// Draw outline only:
fprintf( outputFile, "PA %.0f,%.0f;CI %.0f;\n",
pos_dev.x, pos_dev.y, rsize );
}
PenFinish();
}
void HPGL_PLOTTER::FlashPadRect( const wxPoint& pos, const wxSize& padsize,
double orient, EDA_DRAW_MODE_T trace_mode, void* aData )
{
// Build rect polygon:
std::vector<wxPoint> corners;
int dx = padsize.x / 2;
int dy = padsize.y / 2;
if( trace_mode == 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.push_back( wxPoint( - dx, - dy ) );
corners.push_back( wxPoint( - dx, + dy ) );
corners.push_back( wxPoint( + dx, + dy ) );
corners.push_back( wxPoint( + dx, - dy ) );
// Close polygon
corners.push_back( wxPoint( - dx, - dy ) );
for( unsigned ii = 0; ii < corners.size(); ii++ )
{
RotatePoint( &corners[ii], orient );
corners[ii] += pos;
}
PlotPoly( corners, trace_mode == FILLED ? FILLED_SHAPE : NO_FILL );
}
void HPGL_PLOTTER::FlashPadRoundRect( const wxPoint& aPadPos, const wxSize& aSize,
int aCornerRadius, double aOrient,
EDA_DRAW_MODE_T aTraceMode, void* aData )
{
SHAPE_POLY_SET outline;
const int segmentToCircleCount = 32;
wxSize 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 );
}
TransformRoundRectToPolygon( outline, aPadPos, size, aOrient,
aCornerRadius, segmentToCircleCount );
// TransformRoundRectToPolygon creates only one convex polygon
std::vector< wxPoint > cornerList;
cornerList.reserve( segmentToCircleCount + 5 );
SHAPE_LINE_CHAIN& poly = outline.Outline( 0 );
for( int ii = 0; ii < poly.PointCount(); ++ii )
cornerList.push_back( wxPoint( poly.Point( ii ).x, poly.Point( ii ).y ) );
if( cornerList.back() != cornerList.front() )
cornerList.push_back( cornerList.front() );
PlotPoly( cornerList, aTraceMode == FILLED ? FILLED_SHAPE : NO_FILL );
}
void HPGL_PLOTTER::FlashPadCustom( const wxPoint& aPadPos, const wxSize& aSize,
SHAPE_POLY_SET* aPolygons,
EDA_DRAW_MODE_T aTraceMode, void* aData )
{
std::vector< wxPoint > 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 = 1; ii < poly.PointCount(); ++ii )
cornerList.push_back( wxPoint( poly.Point( ii ).x, poly.Point( ii ).y ) );
if( cornerList.back() != cornerList.front() )
cornerList.push_back( cornerList.front() );
PlotPoly( cornerList, aTraceMode == FILLED ? FILLED_SHAPE : NO_FILL );
}
}
void HPGL_PLOTTER::FlashPadTrapez( const wxPoint& aPadPos, const wxPoint* aCorners,
double aPadOrient, EDA_DRAW_MODE_T aTraceMode, void* aData )
{
std::vector< wxPoint > cornerList;
cornerList.reserve( 5 );
for( int ii = 0; ii < 4; ii++ )
{
wxPoint coord( aCorners[ii] );
RotatePoint( &coord, aPadOrient );
coord += aPadPos;
cornerList.push_back( coord );
}
// Close polygon
cornerList.push_back( cornerList.front() );
PlotPoly( cornerList, aTraceMode == FILLED ? FILLED_SHAPE : NO_FILL );
}
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