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kicad/pcbnew/plot_board_layers.cpp

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/**
* @file plot_board_layers.cpp
* @brief Functions to plot one board layer (silkscreen layers or other layers).
* Silkscreen layers have specific requirement for pads (not filled) and texts
* (with option to remove them from some copper areas (pads...)
*/
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 1992-2012 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
*/
#include <fctsys.h>
#include <common.h>
#include <plot_common.h>
#include <base_struct.h>
#include <drawtxt.h>
#include <trigo.h>
#include <wxBasePcbFrame.h>
#include <pcbcommon.h>
#include <macros.h>
#include <class_board.h>
#include <class_module.h>
#include <class_track.h>
#include <class_edge_mod.h>
#include <class_pcb_text.h>
#include <class_zone.h>
#include <class_drawsegment.h>
#include <class_mire.h>
#include <class_dimension.h>
#include <pcbnew.h>
#include <pcbplot.h>
// Local
/* Plot a solder mask layer.
* Solder mask layers have a minimum thickness value and cannot be drawn like standard layers,
* unless the minimum thickness is 0.
*/
static void PlotSolderMaskLayer( BOARD *aBoard, PLOTTER* aPlotter,
LSET aLayerMask, const PCB_PLOT_PARAMS& aPlotOpt,
int aMinThickness );
/* Creates the plot for silkscreen layers
* Silkscreen layers have specific requirement for pads (not filled) and texts
* (with option to remove them from some copper areas (pads...)
*/
void PlotSilkScreen( BOARD *aBoard, PLOTTER* aPlotter, LSET aLayerMask,
const PCB_PLOT_PARAMS& aPlotOpt )
{
BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
itemplotter.SetLayerSet( aLayerMask );
// Plot edge layer and graphic items
itemplotter.PlotBoardGraphicItems();
// Plot footprint outlines :
itemplotter.Plot_Edges_Modules();
// Plot pads (creates pads outlines, for pads on silkscreen layers)
LSET layersmask_plotpads = aLayerMask;
// Calculate the mask layers of allowed layers for pads
if( !aPlotOpt.GetPlotPadsOnSilkLayer() ) // Do not plot pads on silk screen layers
layersmask_plotpads.set( B_SilkS, false ).set( F_SilkS, false );
if( layersmask_plotpads.any() )
{
for( MODULE* Module = aBoard->m_Modules; Module; Module = Module->Next() )
{
for( D_PAD * pad = Module->Pads(); pad; pad = pad->Next() )
{
// See if the pad is on this layer
LSET masklayer = pad->GetLayerSet();
if( !( masklayer & layersmask_plotpads ).any() )
continue;
EDA_COLOR_T color = ColorFromInt( 0 );
if( layersmask_plotpads[B_SilkS] )
color = aBoard->GetLayerColor( B_SilkS );
if( layersmask_plotpads[F_SilkS] )
color = ColorFromInt( color | aBoard->GetLayerColor( F_SilkS ) );
itemplotter.PlotPad( pad, color, LINE );
}
}
}
// Plot footprints fields (ref, value ...)
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
if( ! itemplotter.PlotAllTextsModule( module ) )
{
wxLogMessage( _( "Your BOARD has a bad layer number for module %s" ),
GetChars( module->GetReference() ) );
}
}
// Plot filled areas
for( int ii = 0; ii < aBoard->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* edge_zone = aBoard->GetArea( ii );
if( !aLayerMask[ edge_zone->GetLayer() ] )
continue;
itemplotter.PlotFilledAreas( edge_zone );
}
// Plot segments used to fill zone areas (outdated, but here for old boards
// compatibility):
for( SEGZONE* seg = aBoard->m_Zone; seg; seg = seg->Next() )
{
if( !aLayerMask[ seg->GetLayer() ] )
continue;
aPlotter->ThickSegment( seg->GetStart(), seg->GetEnd(), seg->GetWidth(),
itemplotter.GetMode() );
}
}
void PlotOneBoardLayer( BOARD *aBoard, PLOTTER* aPlotter, LAYER_NUM aLayer,
const PCB_PLOT_PARAMS& aPlotOpt )
{
PCB_PLOT_PARAMS plotOpt = aPlotOpt;
int soldermask_min_thickness = aBoard->GetDesignSettings().m_SolderMaskMinWidth;
// Set a default color and the text mode for this layer
aPlotter->SetColor( aPlotOpt.GetColor() );
aPlotter->SetTextMode( aPlotOpt.GetTextMode() );
// Specify that the contents of the "Edges Pcb" layer are to be plotted
// in addition to the contents of the currently specified layer.
LSET layer_mask( ToLAYER_ID( aLayer ) );
if( !aPlotOpt.GetExcludeEdgeLayer() )
layer_mask.set( Edge_Cuts );
if( IsCopperLayer( aLayer ) )
{
// Skip NPTH pads on copper layers ( only if hole size == pad size ):
// Drill mark will be plotted,
// if drill mark is SMALL_DRILL_SHAPE or FULL_DRILL_SHAPE
if( plotOpt.GetFormat() == PLOT_FORMAT_DXF )
{
plotOpt.SetSkipPlotNPTH_Pads( false );
PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
}
else
{
plotOpt.SetSkipPlotNPTH_Pads( true );
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
}
}
else
{
switch( aLayer )
{
case B_Mask:
case F_Mask:
plotOpt.SetSkipPlotNPTH_Pads( false );
// Disable plot pad holes
plotOpt.SetDrillMarksType( PCB_PLOT_PARAMS::NO_DRILL_SHAPE );
// Plot solder mask:
if( soldermask_min_thickness == 0 )
{
if( plotOpt.GetFormat() == PLOT_FORMAT_DXF )
PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
else
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
}
else
PlotSolderMaskLayer( aBoard, aPlotter, layer_mask, plotOpt,
soldermask_min_thickness );
break;
case B_Paste:
case F_Paste:
plotOpt.SetSkipPlotNPTH_Pads( false );
// Disable plot pad holes
plotOpt.SetDrillMarksType( PCB_PLOT_PARAMS::NO_DRILL_SHAPE );
if( plotOpt.GetFormat() == PLOT_FORMAT_DXF )
PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
else
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
break;
case F_SilkS:
case B_SilkS:
if( plotOpt.GetFormat() == PLOT_FORMAT_DXF )
PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
else
PlotSilkScreen( aBoard, aPlotter, layer_mask, plotOpt );
// Gerber: Subtract soldermask from silkscreen if enabled
if( aPlotter->GetPlotterType() == PLOT_FORMAT_GERBER
&& plotOpt.GetSubtractMaskFromSilk() )
{
if( aLayer == F_SilkS )
layer_mask = LSET( F_Mask );
else
layer_mask = LSET( B_Mask );
// Create the mask to subtract by creating a negative layer polarity
aPlotter->SetLayerPolarity( false );
// Disable plot pad holes
plotOpt.SetDrillMarksType( PCB_PLOT_PARAMS::NO_DRILL_SHAPE );
// Plot the mask
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
}
break;
default:
PlotSilkScreen( aBoard, aPlotter, layer_mask, plotOpt );
break;
}
}
}
/* Plot a copper layer or mask.
* Silk screen layers are not plotted here.
*/
void PlotStandardLayer( BOARD *aBoard, PLOTTER* aPlotter,
LSET aLayerMask, const PCB_PLOT_PARAMS& aPlotOpt )
{
BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
itemplotter.SetLayerSet( aLayerMask );
EDA_DRAW_MODE_T plotMode = aPlotOpt.GetMode();
// Plot edge layer and graphic items
itemplotter.PlotBoardGraphicItems();
// Draw footprint shapes without pads (pads will plotted later)
// We plot here module texts, but they are usually on silkscreen layer,
// so they are not plot here but plot by PlotSilkScreen()
// Plot footprints fields (ref, value ...)
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
if( ! itemplotter.PlotAllTextsModule( module ) )
{
wxLogMessage( _( "Your BOARD has a bad layer number for module %s" ),
GetChars( module->GetReference() ) );
}
}
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
for( BOARD_ITEM* item = module->GraphicalItems(); item; item = item->Next() )
{
if( !aLayerMask[ item->GetLayer() ] )
continue;
switch( item->Type() )
{
case PCB_MODULE_EDGE_T:
itemplotter.Plot_1_EdgeModule( (EDGE_MODULE*) item );
break;
default:
break;
}
}
}
// Plot footprint pads
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->Pads(); pad; pad = pad->Next() )
{
if( (pad->GetLayerSet() & aLayerMask) == 0 )
continue;
wxSize margin;
double width_adj = 0;
if( ( aLayerMask & LSET::AllCuMask() ).any() )
width_adj = itemplotter.getFineWidthAdj();
#if 0 // was:
switch( aLayerMask &
( SOLDERMASK_LAYER_BACK | SOLDERMASK_LAYER_FRONT |
SOLDERPASTE_LAYER_BACK | SOLDERPASTE_LAYER_FRONT ) )
{
case SOLDERMASK_LAYER_FRONT:
case SOLDERMASK_LAYER_BACK:
break;
case SOLDERPASTE_LAYER_FRONT:
case SOLDERPASTE_LAYER_BACK:
break;
default:
break;
}
#else
static const LSET speed( 4, B_Mask, F_Mask, B_Paste, F_Paste );
LSET anded = ( speed & aLayerMask );
if( anded == LSET( F_Mask ) || anded == LSET( B_Mask ) )
{
margin.x = margin.y = pad->GetSolderMaskMargin();
}
else if( anded == LSET( F_Paste ) || anded == LSET( B_Paste ) )
{
margin = pad->GetSolderPasteMargin();
}
#endif
wxSize padPlotsSize;
padPlotsSize.x = pad->GetSize().x + ( 2 * margin.x ) + width_adj;
padPlotsSize.y = pad->GetSize().y + ( 2 * margin.y ) + width_adj;
// Don't draw a null size item :
if( padPlotsSize.x <= 0 || padPlotsSize.y <= 0 )
continue;
EDA_COLOR_T color = BLACK;
if( pad->GetLayerSet()[B_Cu] )
color = aBoard->GetVisibleElementColor( PAD_BK_VISIBLE );
if( pad->GetLayerSet()[F_Cu] )
color = ColorFromInt( color | aBoard->GetVisibleElementColor( PAD_FR_VISIBLE ) );
// Temporary set the pad size to the required plot size:
wxSize tmppadsize = pad->GetSize();
pad->SetSize( padPlotsSize );
switch( pad->GetShape() )
{
case PAD_CIRCLE:
case PAD_OVAL:
if( aPlotOpt.GetSkipPlotNPTH_Pads() &&
(pad->GetSize() == pad->GetDrillSize()) &&
(pad->GetAttribute() == PAD_HOLE_NOT_PLATED) )
break;
// Fall through:
case PAD_TRAPEZOID:
case PAD_RECT:
default:
itemplotter.PlotPad( pad, color, plotMode );
break;
}
pad->SetSize( tmppadsize ); // Restore the pad size
}
}
// Plot vias on copper layers, and if aPlotOpt.GetPlotViaOnMaskLayer() is true,
// plot them on solder mask
for( TRACK* track = aBoard->m_Track; track; track = track->Next() )
{
const VIA* Via = dyn_cast<const VIA*>( track );
if( !Via )
continue;
// vias are not plotted if not on selected layer, but if layer
// is SOLDERMASK_LAYER_BACK or SOLDERMASK_LAYER_FRONT,vias are drawn,
// only if they are on the corresponding external copper layer
LSET via_mask_layer = Via->GetLayerSet();
if( aPlotOpt.GetPlotViaOnMaskLayer() )
{
if( via_mask_layer[B_Cu] )
via_mask_layer.set( B_Mask );
if( via_mask_layer[F_Cu] )
via_mask_layer.set( F_Mask );
}
if( !( via_mask_layer & aLayerMask ).any() )
continue;
int via_margin = 0;
double width_adj = 0;
// If the current layer is a solder mask, use the global mask
// clearance for vias
if( aLayerMask[B_Mask] || aLayerMask[F_Mask] )
via_margin = aBoard->GetDesignSettings().m_SolderMaskMargin;
if( ( aLayerMask & LSET::AllCuMask() ).any() )
width_adj = itemplotter.getFineWidthAdj();
int diameter = Via->GetWidth() + 2 * via_margin + width_adj;
// Don't draw a null size item :
if( diameter <= 0 )
continue;
EDA_COLOR_T color = aBoard->GetVisibleElementColor(VIAS_VISIBLE + Via->GetViaType());
// Set plot color (change WHITE to LIGHTGRAY because
// the white items are not seen on a white paper or screen
aPlotter->SetColor( color != WHITE ? color : LIGHTGRAY);
aPlotter->FlashPadCircle( Via->GetStart(), diameter, plotMode );
}
// Plot tracks (not vias) :
for( TRACK* track = aBoard->m_Track; track; track = track->Next() )
{
if( track->Type() == PCB_VIA_T )
continue;
if( !aLayerMask[track->GetLayer()] )
continue;
int width = track->GetWidth() + itemplotter.getFineWidthAdj();
aPlotter->SetColor( itemplotter.getColor( track->GetLayer() ) );
aPlotter->ThickSegment( track->GetStart(), track->GetEnd(), width, plotMode );
}
// Plot zones (outdated, for old boards compatibility):
for( TRACK* track = aBoard->m_Zone; track; track = track->Next() )
{
if( !aLayerMask[track->GetLayer()] )
continue;
int width = track->GetWidth() + itemplotter.getFineWidthAdj();
aPlotter->SetColor( itemplotter.getColor( track->GetLayer() ) );
aPlotter->ThickSegment( track->GetStart(), track->GetEnd(), width, plotMode );
}
// Plot filled ares
for( int ii = 0; ii < aBoard->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* zone = aBoard->GetArea( ii );
if( !aLayerMask[zone->GetLayer()] )
continue;
itemplotter.PlotFilledAreas( zone );
}
// Adding drill marks, if required and if the plotter is able to plot them:
if( aPlotOpt.GetDrillMarksType() != PCB_PLOT_PARAMS::NO_DRILL_SHAPE )
itemplotter.PlotDrillMarks();
}
// Seems like we want to plot from back to front?
static const LAYER_ID plot_seq[] = {
B_Adhes, // 32
F_Adhes,
B_Paste,
F_Paste,
B_SilkS,
B_Mask,
F_Mask,
Dwgs_User,
Cmts_User,
Eco1_User,
Eco2_User,
Edge_Cuts,
Margin,
F_CrtYd, // CrtYd & Body are footprint only
B_CrtYd,
F_Fab,
B_Fab,
B_Cu,
In30_Cu,
In29_Cu,
In28_Cu,
In27_Cu,
In26_Cu,
In25_Cu,
In24_Cu,
In23_Cu,
In22_Cu,
In21_Cu,
In20_Cu,
In19_Cu,
In18_Cu,
In17_Cu,
In16_Cu,
In15_Cu,
In14_Cu,
In13_Cu,
In12_Cu,
In11_Cu,
In10_Cu,
In9_Cu,
In8_Cu,
In7_Cu,
In6_Cu,
In5_Cu,
In4_Cu,
In3_Cu,
In2_Cu,
In1_Cu,
F_Cu,
F_SilkS,
};
/* Plot outlines of copper, for copper layer
*/
#include "clipper.hpp"
void PlotLayerOutlines( BOARD *aBoard, PLOTTER* aPlotter,
LSET aLayerMask, const PCB_PLOT_PARAMS& aPlotOpt )
{
BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
itemplotter.SetLayerSet( aLayerMask );
CPOLYGONS_LIST outlines;
for( LSEQ seq = aLayerMask.Seq( plot_seq, DIM( plot_seq ) ); seq; ++seq )
{
LAYER_ID layer = *seq;
outlines.RemoveAllContours();
aBoard->ConvertBrdLayerToPolygonalContours( layer, outlines );
// Merge all overlapping polygons.
KI_POLYGON_SET kpolygons;
KI_POLYGON_SET ktmp;
outlines.ExportTo( ktmp );
kpolygons += ktmp;
// Plot outlines
std::vector< wxPoint > cornerList;
for( unsigned ii = 0; ii < kpolygons.size(); ii++ )
{
KI_POLYGON polygon = kpolygons[ii];
// polygon contains only one polygon, but it can have holes linked by
// overlapping segments.
// To plot clean outlines, we have to break this polygon into more polygons with
// no overlapping segments, using Clipper, because boost::polygon
// does not allow that
ClipperLib::Path raw_polygon;
ClipperLib::Paths normalized_polygons;
for( unsigned ic = 0; ic < polygon.size(); ic++ )
{
KI_POLY_POINT corner = *(polygon.begin() + ic);
raw_polygon.push_back( ClipperLib::IntPoint( corner.x(), corner.y() ) );
}
ClipperLib::SimplifyPolygon( raw_polygon, normalized_polygons );
// Now we have one or more basic polygons: plot each polygon
for( unsigned ii = 0; ii < normalized_polygons.size(); ii++ )
{
ClipperLib::Path& polygon = normalized_polygons[ii];
cornerList.clear();
for( unsigned jj = 0; jj < polygon.size(); jj++ )
cornerList.push_back( wxPoint( polygon[jj].X , polygon[jj].Y ) );
// Ensure the polygon is closed
if( cornerList[0] != cornerList[cornerList.size()-1] )
cornerList.push_back( cornerList[0] );
aPlotter->PlotPoly( cornerList, NO_FILL );
}
}
// Plot pad holes
if( aPlotOpt.GetDrillMarksType() != PCB_PLOT_PARAMS::NO_DRILL_SHAPE )
{
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->Pads(); pad; pad = pad->Next() )
{
wxSize hole = pad->GetDrillSize();
if( hole.x == 0 || hole.y == 0 )
continue;
if( hole.x == hole.y )
aPlotter->Circle( pad->GetPosition(), hole.x, NO_FILL );
else
{
wxPoint drl_start, drl_end;
int width;
pad->GetOblongDrillGeometry( drl_start, drl_end, width );
aPlotter->ThickSegment( pad->GetPosition() + drl_start,
pad->GetPosition() + drl_end, width, SKETCH );
}
}
}
}
// Plot vias holes
for( TRACK* track = aBoard->m_Track; track; track = track->Next() )
{
const VIA* via = dyn_cast<const VIA*>( track );
if( via && via->IsOnLayer( layer ) ) // via holes can be not through holes
{
aPlotter->Circle( via->GetPosition(), via->GetDrillValue(), NO_FILL );
}
}
}
}
/* Plot a solder mask layer.
* Solder mask layers have a minimum thickness value and cannot be drawn like standard layers,
* unless the minimum thickness is 0.
* Currently the algo is:
* 1 - build all pad shapes as polygons with a size inflated by
* mask clearance + (min width solder mask /2)
* 2 - Merge shapes
* 3 - deflate result by (min width solder mask /2)
* 4 - oring result by all pad shapes as polygons with a size inflated by
* mask clearance only (because deflate sometimes creates shape artifacts)
* 5 - draw result as polygons
*
* TODO:
* make this calculation only for shapes with clearance near than (min width solder mask)
* (using DRC algo)
* plot all other shapes by flashing the basing shape
* (shapes will be better, and calculations faster)
*/
void PlotSolderMaskLayer( BOARD *aBoard, PLOTTER* aPlotter,
LSET aLayerMask, const PCB_PLOT_PARAMS& aPlotOpt,
int aMinThickness )
{
LAYER_ID layer = aLayerMask[B_Mask] ? B_Mask : F_Mask;
int inflate = aMinThickness/2;
BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
itemplotter.SetLayerSet( aLayerMask );
// Plot edge layer and graphic items
itemplotter.PlotBoardGraphicItems();
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
for( BOARD_ITEM* item = module->GraphicalItems(); item; item = item->Next() )
{
if( layer != item->GetLayer() )
continue;
switch( item->Type() )
{
case PCB_MODULE_EDGE_T:
itemplotter.Plot_1_EdgeModule( (EDGE_MODULE*) item );
break;
default:
break;
}
}
}
// Build polygons for each pad shape.
// the size of the shape on solder mask should be:
// size of pad + clearance around the pad.
// clearance = solder mask clearance + extra margin
// extra margin is half the min width for solder mask
// This extra margin is used to merge too close shapes
// (distance < aMinThickness), and will be removed when creating
// the actual shapes
CPOLYGONS_LIST bufferPolys; // Contains shapes to plot
CPOLYGONS_LIST initialPolys; // Contains exact shapes to plot
/* calculates the coeff to compensate radius reduction of holes clearance
* due to the segment approx ( 1 /cos( PI/circleToSegmentsCount )
*/
int circleToSegmentsCount = 32;
double correction = 1.0 / cos( M_PI / circleToSegmentsCount );
// Plot pads
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
// add shapes with exact size
module->TransformPadsShapesWithClearanceToPolygon( layer,
initialPolys, 0,
circleToSegmentsCount, correction );
// add shapes inflated by aMinThickness/2
module->TransformPadsShapesWithClearanceToPolygon( layer,
bufferPolys, inflate,
circleToSegmentsCount, correction );
}
// Plot vias on solder masks, if aPlotOpt.GetPlotViaOnMaskLayer() is true,
if( aPlotOpt.GetPlotViaOnMaskLayer() )
{
// The current layer is a solder mask,
// use the global mask clearance for vias
int via_clearance = aBoard->GetDesignSettings().m_SolderMaskMargin;
int via_margin = via_clearance + inflate;
for( TRACK* track = aBoard->m_Track; track; track = track->Next() )
{
const VIA* via = dyn_cast<const VIA*>( track );
if( !via )
continue;
// vias are plotted only if they are on the corresponding
// external copper layer
LSET via_set = via->GetLayerSet();
if( via_set[B_Cu] )
via_set.set( B_Mask );
if( via_set[F_Cu] )
via_set.set( F_Mask );
if( !( via_set & aLayerMask ).any() )
continue;
via->TransformShapeWithClearanceToPolygon( bufferPolys, via_margin,
circleToSegmentsCount,
correction );
via->TransformShapeWithClearanceToPolygon( initialPolys, via_clearance,
circleToSegmentsCount,
correction );
}
}
// Add filled zone areas
for( int ii = 0; ii < aBoard->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* zone = aBoard->GetArea( ii );
if( zone->GetLayer() != layer )
continue;
zone->TransformOutlinesShapeWithClearanceToPolygon( bufferPolys,
inflate, true );
}
// Now:
// 1 - merge areas which are intersecting, i.e. remove gaps
// having a thickness < aMinThickness
// 2 - deflate resulting areas by aMinThickness/2
KI_POLYGON_SET areasToMerge;
bufferPolys.ExportTo( areasToMerge );
KI_POLYGON_SET initialAreas;
initialPolys.ExportTo( initialAreas );
// Merge polygons: because each shape was created with an extra margin
// = aMinThickness/2, shapes too close ( dist < aMinThickness )
// will be merged, because they are overlapping
KI_POLYGON_SET areas;
areas |= areasToMerge;
// Deflate: remove the extra margin, to create the actual shapes
// Here I am using polygon:resize, because this function creates better shapes
// than deflate algo.
// Use here deflate with arc creation and 18 segments per circle to create arcs
// In boost polygon (at least v 1.54 and previous) in very rare cases resize crashes
// with 16 segments (perhaps related to 45 degrees pads). So using 18 segments
// is a workaround to try to avoid these crashes
areas = resize( areas, -inflate , true, 18 );
// Resize slightly changes shapes. So *ensure* initial shapes are kept
areas |= initialAreas;
// To avoid a lot of code, use a ZONE_CONTAINER
// to plot polygons, because they are exactly like
// filled areas in zones
ZONE_CONTAINER zone( aBoard );
zone.SetArcSegmentCount( 32 );
zone.SetMinThickness( 0 ); // trace polygons only
zone.SetLayer ( layer );
zone.CopyPolygonsFromKiPolygonListToFilledPolysList( areas );
itemplotter.PlotFilledAreas( &zone );
}
/** Set up most plot options for plotting a board (especially the viewport)
* Important thing:
* page size is the 'drawing' page size,
* paper size is the physical page size
*/
static void initializePlotter( PLOTTER *aPlotter, BOARD * aBoard,
PCB_PLOT_PARAMS *aPlotOpts )
{
PAGE_INFO pageA4( wxT( "A4" ) );
const PAGE_INFO& pageInfo = aBoard->GetPageSettings();
const PAGE_INFO* sheet_info;
double paperscale; // Page-to-paper ratio
wxSize paperSizeIU;
wxSize pageSizeIU( pageInfo.GetSizeIU() );
bool autocenter = false;
/* Special options: to fit the sheet to an A4 sheet replace
the paper size. However there is a difference between
the autoscale and the a4paper option:
- Autoscale fits the board to the paper size
- A4paper fits the original paper size to an A4 sheet
- Both of them fit the board to an A4 sheet
*/
if( aPlotOpts->GetA4Output() ) // Fit paper to A4
{
sheet_info = &pageA4;
paperSizeIU = pageA4.GetSizeIU();
paperscale = (double) paperSizeIU.x / pageSizeIU.x;
autocenter = true;
}
else
{
sheet_info = &pageInfo;
paperSizeIU = pageSizeIU;
paperscale = 1;
// Need autocentering only if scale is not 1:1
autocenter = (aPlotOpts->GetScale() != 1.0);
}
EDA_RECT bbox = aBoard->ComputeBoundingBox();
wxPoint boardCenter = bbox.Centre();
wxSize boardSize = bbox.GetSize();
double compound_scale;
/* Fit to 80% of the page if asked; it could be that the board is empty,
* in this case regress to 1:1 scale */
if( aPlotOpts->GetAutoScale() && boardSize.x > 0 && boardSize.y > 0 )
{
double xscale = (paperSizeIU.x * 0.8) / boardSize.x;
double yscale = (paperSizeIU.y * 0.8) / boardSize.y;
compound_scale = std::min( xscale, yscale ) * paperscale;
}
else
compound_scale = aPlotOpts->GetScale() * paperscale;
/* For the plot offset we have to keep in mind the auxiliary origin
too: if autoscaling is off we check that plot option (i.e. autoscaling
overrides auxiliary origin) */
wxPoint offset( 0, 0);
if( autocenter )
{
offset.x = KiROUND( boardCenter.x - ( paperSizeIU.x / 2.0 ) / compound_scale );
offset.y = KiROUND( boardCenter.y - ( paperSizeIU.y / 2.0 ) / compound_scale );
}
else
{
if( aPlotOpts->GetUseAuxOrigin() )
offset = aBoard->GetAuxOrigin();
}
/* Configure the plotter object with all the stuff computed and
most of that taken from the options */
aPlotter->SetPageSettings( *sheet_info );
aPlotter->SetViewport( offset, IU_PER_DECIMILS, compound_scale,
aPlotOpts->GetMirror() );
// has meaning only for gerber plotter. Must be called only after SetViewport
aPlotter->SetGerberCoordinatesFormat( aPlotOpts->GetGerberPrecision() );
aPlotter->SetDefaultLineWidth( aPlotOpts->GetLineWidth() );
aPlotter->SetCreator( wxT( "PCBNEW" ) );
aPlotter->SetColorMode( false ); // default is plot in Black and White.
aPlotter->SetTextMode( aPlotOpts->GetTextMode() );
}
/** Prefill in black an area a little bigger than the board to prepare for the
* negative plot */
static void FillNegativeKnockout( PLOTTER *aPlotter, const EDA_RECT &aBbbox )
{
const int margin = 5 * IU_PER_MM; // Add a 5 mm margin around the board
aPlotter->SetNegative( true );
aPlotter->SetColor( WHITE ); // Which will be plotted as black
EDA_RECT area = aBbbox;
area.Inflate( margin );
aPlotter->Rect( area.GetOrigin(), area.GetEnd(), FILLED_SHAPE );
aPlotter->SetColor( BLACK );
}
/** Calculate the effective size of HPGL pens and set them in the
* plotter object */
static void ConfigureHPGLPenSizes( HPGL_PLOTTER *aPlotter,
PCB_PLOT_PARAMS *aPlotOpts )
{
/* Compute pen_dim (the value is given in mils) in pcb units,
with plot scale (if Scale is 2, pen diameter value is always m_HPGLPenDiam
so apparent pen diam is actually pen diam / Scale */
int pen_diam = KiROUND( aPlotOpts->GetHPGLPenDiameter() * IU_PER_MILS /
aPlotOpts->GetScale() );
// compute pen_overlay (value comes in mils) in pcb units with plot scale
if( aPlotOpts->GetHPGLPenOverlay() < 0 )
aPlotOpts->SetHPGLPenOverlay( 0 );
if( aPlotOpts->GetHPGLPenOverlay() >= aPlotOpts->GetHPGLPenDiameter() )
aPlotOpts->SetHPGLPenOverlay( aPlotOpts->GetHPGLPenDiameter() - 1 );
int pen_overlay = KiROUND( aPlotOpts->GetHPGLPenOverlay() * IU_PER_MILS /
aPlotOpts->GetScale() );
// Set HPGL-specific options and start
aPlotter->SetPenSpeed( aPlotOpts->GetHPGLPenSpeed() );
aPlotter->SetPenNumber( aPlotOpts->GetHPGLPenNum() );
aPlotter->SetPenOverlap( pen_overlay );
aPlotter->SetPenDiameter( pen_diam );
}
/** Open a new plotfile using the options (and especially the format)
* specified in the options and prepare the page for plotting.
* Return the plotter object if OK, NULL if the file is not created
* (or has a problem)
*/
PLOTTER* StartPlotBoard( BOARD *aBoard, PCB_PLOT_PARAMS *aPlotOpts,
int aLayer,
const wxString& aFullFileName,
const wxString& aSheetDesc )
{
// Create the plotter driver and set the few plotter specific
// options
PLOTTER* plotter = NULL;
switch( aPlotOpts->GetFormat() )
{
case PLOT_FORMAT_DXF:
plotter = new DXF_PLOTTER();
break;
case PLOT_FORMAT_POST:
PS_PLOTTER* PS_plotter;
PS_plotter = new PS_PLOTTER();
PS_plotter->SetScaleAdjust( aPlotOpts->GetFineScaleAdjustX(),
aPlotOpts->GetFineScaleAdjustY() );
plotter = PS_plotter;
break;
case PLOT_FORMAT_PDF:
plotter = new PDF_PLOTTER();
break;
case PLOT_FORMAT_HPGL:
HPGL_PLOTTER* HPGL_plotter;
HPGL_plotter = new HPGL_PLOTTER();
/* HPGL options are a little more convoluted to compute, so
they're split in an other function */
ConfigureHPGLPenSizes( HPGL_plotter, aPlotOpts );
plotter = HPGL_plotter;
break;
case PLOT_FORMAT_GERBER:
plotter = new GERBER_PLOTTER();
break;
case PLOT_FORMAT_SVG:
plotter = new SVG_PLOTTER();
break;
default:
wxASSERT( false );
return NULL;
}
// Compute the viewport and set the other options
// page layout is not mirrored, so temporary change mirror option
// just to plot the page layout
PCB_PLOT_PARAMS plotOpts = *aPlotOpts;
if( plotOpts.GetPlotFrameRef() && plotOpts.GetMirror() )
plotOpts.SetMirror( false );
initializePlotter( plotter, aBoard, &plotOpts );
if( plotter->OpenFile( aFullFileName ) )
{
// For the Gerber "file function" attribute, set the layer number
if( plotter->GetPlotterType() == PLOT_FORMAT_GERBER && plotOpts.GetUseGerberAttributes() )
plotter->SetLayerAttribFunction( GetGerberFileFunction( aBoard, aLayer ) );
plotter->StartPlot();
// Plot the frame reference if requested
if( aPlotOpts->GetPlotFrameRef() )
{
PlotWorkSheet( plotter, aBoard->GetTitleBlock(),
aBoard->GetPageSettings(),
1, 1, // Only one page
aSheetDesc, aBoard->GetFileName() );
if( aPlotOpts->GetMirror() )
initializePlotter( plotter, aBoard, aPlotOpts );
}
/* When plotting a negative board: draw a black rectangle
* (background for plot board in white) and switch the current
* color to WHITE; note the color inversion is actually done
* in the driver (if supported) */
if( aPlotOpts->GetNegative() )
{
EDA_RECT bbox = aBoard->ComputeBoundingBox();
FillNegativeKnockout( plotter, bbox );
}
return plotter;
}
delete plotter;
return NULL;
}
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