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.
*
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* Copyright (C) 1992-2022 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
*/
#include <eda_item.h>
#include <layer_ids.h>
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#include <geometry/geometry_utils.h>
#include <geometry/shape_segment.h>
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#include <pcb_base_frame.h>
#include <math/util.h> // for KiROUND
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#include <board.h>
#include <board_design_settings.h>
#include <core/arraydim.h>
#include <footprint.h>
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#include <pcb_track.h>
#include <fp_shape.h>
#include <pad.h>
#include <pcb_text.h>
#include <zone.h>
#include <pcb_shape.h>
#include <pcb_target.h>
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#include <pcb_dimension.h>
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#include <pcbplot.h>
#include <plotters/plotter_dxf.h>
#include <plotters/plotter_hpgl.h>
#include <plotters/plotter_gerber.h>
#include <plotters/plotters_pslike.h>
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#include <pcb_painter.h>
#include <gbr_metadata.h>
#include <advanced_config.h>
/*
* 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 );
void PlotBoardLayers( BOARD* aBoard, PLOTTER* aPlotter, const LSEQ& aLayers,
const PCB_PLOT_PARAMS& aPlotOptions )
{
wxCHECK( aBoard && aPlotter && aLayers.size(), /* void */ );
for( LSEQ seq = aLayers; seq; ++seq )
PlotOneBoardLayer( aBoard, aPlotter, *seq, aPlotOptions );
}
void PlotOneBoardLayer( BOARD *aBoard, PLOTTER* aPlotter, PCB_LAYER_ID 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( BLACK );
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( aLayer );
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if( IsCopperLayer( aLayer ) )
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{
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// 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
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if( plotOpt.GetFormat() == PLOT_FORMAT::DXF )
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{
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 );
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// Plot solder mask:
if( soldermask_min_thickness == 0 )
{
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if( plotOpt.GetFormat() == PLOT_FORMAT::DXF )
PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
else
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
}
else
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{
PlotSolderMaskLayer( aBoard, aPlotter, layer_mask, plotOpt,
soldermask_min_thickness );
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}
break;
case B_Adhes:
case F_Adhes:
case B_Paste:
case F_Paste:
plotOpt.SetSkipPlotNPTH_Pads( false );
// Disable plot pad holes
plotOpt.SetDrillMarksType( PCB_PLOT_PARAMS::NO_DRILL_SHAPE );
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if( plotOpt.GetFormat() == PLOT_FORMAT::DXF )
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PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
else
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
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break;
case F_SilkS:
case B_SilkS:
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if( plotOpt.GetFormat() == PLOT_FORMAT::DXF && plotOpt.GetDXFPlotPolygonMode() )
// PlotLayerOutlines() is designed only for DXF plotters.
// and must not be used for other plot formats
PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
else
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
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// Gerber: Subtract soldermask from silkscreen if enabled
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if( aPlotter->GetPlotterType() == PLOT_FORMAT::GERBER
&& plotOpt.GetSubtractMaskFromSilk() )
{
if( aLayer == F_SilkS )
layer_mask = LSET( F_Mask );
else
layer_mask = LSET( B_Mask );
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// Create the mask to subtract by creating a negative layer polarity
aPlotter->SetLayerPolarity( false );
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// Disable plot pad holes
plotOpt.SetDrillMarksType( PCB_PLOT_PARAMS::NO_DRILL_SHAPE );
// Plot the mask
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
}
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break;
// These layers are plotted like silk screen layers.
// Mainly, pads on these layers are not filled.
// This is not necessary the best choice.
case Dwgs_User:
case Cmts_User:
case Eco1_User:
case Eco2_User:
case Edge_Cuts:
case Margin:
case F_CrtYd:
case B_CrtYd:
case F_Fab:
case B_Fab:
plotOpt.SetSkipPlotNPTH_Pads( false );
plotOpt.SetDrillMarksType( PCB_PLOT_PARAMS::NO_DRILL_SHAPE );
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if( plotOpt.GetFormat() == PLOT_FORMAT::DXF && plotOpt.GetDXFPlotPolygonMode() )
// PlotLayerOutlines() is designed only for DXF plotters.
// and must not be used for other plot formats
PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
else
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
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break;
default:
plotOpt.SetSkipPlotNPTH_Pads( false );
plotOpt.SetDrillMarksType( PCB_PLOT_PARAMS::NO_DRILL_SHAPE );
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if( plotOpt.GetFormat() == PLOT_FORMAT::DXF && plotOpt.GetDXFPlotPolygonMode() )
// PlotLayerOutlines() is designed only for DXF plotters.
// and must not be used for other plot formats
PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
else
PlotStandardLayer( aBoard, aPlotter, layer_mask, plotOpt );
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break;
}
}
}
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/**
* Plot a copper layer or mask.
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*
* Silk screen layers are not plotted here.
*/
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void PlotStandardLayer( BOARD* aBoard, PLOTTER* aPlotter, LSET aLayerMask,
const PCB_PLOT_PARAMS& aPlotOpt )
{
BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
itemplotter.SetLayerSet( aLayerMask );
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OUTLINE_MODE plotMode = aPlotOpt.GetPlotMode();
bool onCopperLayer = ( LSET::AllCuMask() & aLayerMask ).any();
bool onSolderMaskLayer = ( LSET( 2, F_Mask, B_Mask ) & aLayerMask ).any();
bool onSolderPasteLayer = ( LSET( 2, F_Paste, B_Paste ) & aLayerMask ).any();
bool onFrontFab = ( LSET( F_Fab ) & aLayerMask ).any();
bool onBackFab = ( LSET( B_Fab ) & aLayerMask ).any();
bool sketchPads = ( onFrontFab || onBackFab ) && aPlotOpt.GetSketchPadsOnFabLayers();
// Plot edge layer and graphic items
itemplotter.PlotBoardGraphicItems();
// Draw footprint texts:
for( const FOOTPRINT* footprint : aBoard->Footprints() )
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itemplotter.PlotFootprintTextItems( footprint );
// Draw footprint other graphic items:
for( const FOOTPRINT* footprint : aBoard->Footprints() )
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itemplotter.PlotFootprintGraphicItems( footprint );
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// Plot footprint pads
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for( FOOTPRINT* footprint : aBoard->Footprints() )
{
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aPlotter->StartBlock( nullptr );
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for( PAD* pad : footprint->Pads() )
{
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OUTLINE_MODE padPlotMode = plotMode;
if( !( pad->GetLayerSet() & aLayerMask ).any() )
{
if( sketchPads &&
( ( onFrontFab && pad->GetLayerSet().Contains( F_Cu ) ) ||
( onBackFab && pad->GetLayerSet().Contains( B_Cu ) ) ) )
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{
padPlotMode = SKETCH;
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}
else
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{
continue;
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}
}
/// pads not connected to copper are optionally not drawn
if( onCopperLayer && !pad->FlashLayer( aLayerMask ) )
continue;
COLOR4D color = COLOR4D::BLACK;
if( ( pad->GetLayerSet() & aLayerMask )[B_Cu] )
color = aPlotOpt.ColorSettings()->GetColor( B_Cu );
if( ( pad->GetLayerSet() & aLayerMask )[F_Cu] )
color = color.LegacyMix( aPlotOpt.ColorSettings()->GetColor( F_Cu ) );
if( sketchPads && aLayerMask[F_Fab] )
color = aPlotOpt.ColorSettings()->GetColor( F_Fab );
else if( sketchPads && aLayerMask[B_Fab] )
color = aPlotOpt.ColorSettings()->GetColor( B_Fab );
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VECTOR2I margin;
int width_adj = 0;
if( onCopperLayer )
width_adj = itemplotter.getFineWidthAdj();
if( onSolderMaskLayer )
margin.x = margin.y = pad->GetSolderMaskExpansion();
if( onSolderPasteLayer )
margin = pad->GetSolderPasteMargin();
// not all shapes can have a different margin for x and y axis
// in fact only oval and rect shapes can have different values.
// Round shape have always the same x,y margin
// so define a unique value for other shapes that do not support different values
int mask_clearance = margin.x;
// Now offset the pad size by margin + width_adj
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VECTOR2I padPlotsSize = pad->GetSize() + margin * 2 + VECTOR2I( width_adj, width_adj );
// Store these parameters that can be modified to plot inflated/deflated pads shape
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PAD_SHAPE padShape = pad->GetShape();
VECTOR2I padSize = pad->GetSize();
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VECTOR2I padDelta = pad->GetDelta(); // has meaning only for trapezoidal pads
double padCornerRadius = pad->GetRoundRectCornerRadius();
// Don't draw a 0 sized pad.
// Note: a custom pad can have its pad anchor with size = 0
if( pad->GetShape() != PAD_SHAPE::CUSTOM
&& ( padPlotsSize.x <= 0 || padPlotsSize.y <= 0 ) )
continue;
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switch( pad->GetShape() )
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{
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case PAD_SHAPE::CIRCLE:
case PAD_SHAPE::OVAL:
pad->SetSize( padPlotsSize );
if( aPlotOpt.GetSkipPlotNPTH_Pads() &&
( aPlotOpt.GetDrillMarksType() == PCB_PLOT_PARAMS::NO_DRILL_SHAPE ) &&
( pad->GetSize() == pad->GetDrillSize() ) &&
( pad->GetAttribute() == PAD_ATTRIB::NPTH ) )
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{
break;
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}
itemplotter.PlotPad( pad, color, padPlotMode );
break;
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case PAD_SHAPE::RECT:
pad->SetSize( padPlotsSize );
if( mask_clearance > 0 )
{
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pad->SetShape( PAD_SHAPE::ROUNDRECT );
pad->SetRoundRectCornerRadius( mask_clearance );
}
itemplotter.PlotPad( pad, color, padPlotMode );
break;
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case PAD_SHAPE::TRAPEZOID:
// inflate/deflate a trapezoid is a bit complex.
// so if the margin is not null, build a similar polygonal pad shape,
// and inflate/deflate the polygonal shape
// because inflating/deflating using different values for y and y
// we are using only margin.x as inflate/deflate value
if( mask_clearance == 0 )
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{
itemplotter.PlotPad( pad, color, padPlotMode );
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}
else
{
PAD dummy( *pad );
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dummy.SetAnchorPadShape( PAD_SHAPE::CIRCLE );
dummy.SetShape( PAD_SHAPE::CUSTOM );
SHAPE_POLY_SET outline;
outline.NewOutline();
int dx = padSize.x / 2;
int dy = padSize.y / 2;
int ddx = padDelta.x / 2;
int ddy = padDelta.y / 2;
outline.Append( -dx - ddy, dy + ddx );
outline.Append( dx + ddy, dy - ddx );
outline.Append( dx - ddy, -dy + ddx );
outline.Append( -dx + ddy, -dy - ddx );
// Shape polygon can have holes so use InflateWithLinkedHoles(), not Inflate()
// which can create bad shapes if margin.x is < 0
int maxError = aBoard->GetDesignSettings().m_MaxError;
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int numSegs = GetArcToSegmentCount( mask_clearance, maxError, FULL_CIRCLE );
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outline.InflateWithLinkedHoles( mask_clearance, numSegs,
SHAPE_POLY_SET::PM_FAST );
dummy.DeletePrimitivesList();
dummy.AddPrimitivePoly( outline, 0, true );
// Be sure the anchor pad is not bigger than the deflated shape because this
// anchor will be added to the pad shape when plotting the pad. So now the
// polygonal shape is built, we can clamp the anchor size
dummy.SetSize( wxSize( 0,0 ) );
itemplotter.PlotPad( &dummy, color, padPlotMode );
}
break;
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case PAD_SHAPE::ROUNDRECT:
{
// rounding is stored as a percent, but we have to change the new radius
// to initial_radius + clearance to have a inflated/deflated similar shape
int initial_radius = pad->GetRoundRectCornerRadius();
pad->SetSize( padPlotsSize );
pad->SetRoundRectCornerRadius( std::max( initial_radius + mask_clearance, 0 ) );
itemplotter.PlotPad( pad, color, padPlotMode );
break;
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}
case PAD_SHAPE::CHAMFERED_RECT:
if( mask_clearance == 0 )
{
// the size can be slightly inflated by width_adj (PS/PDF only)
pad->SetSize( padPlotsSize );
itemplotter.PlotPad( pad, color, padPlotMode );
}
else
{
// Due to the polygonal shape of a CHAMFERED_RECT pad, the best way is to
// convert the pad shape to a full polygon, inflate/deflate the polygon
// and use a dummy CUSTOM pad to plot the final shape.
PAD dummy( *pad );
// Build the dummy pad outline with coordinates relative to the pad position
// and orientation 0. The actual pos and rotation will be taken in account
// later by the plot function
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dummy.SetPosition( VECTOR2I( 0, 0 ) );
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dummy.SetOrientation( ANGLE_0 );
SHAPE_POLY_SET outline;
int maxError = aBoard->GetDesignSettings().m_MaxError;
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int numSegs = GetArcToSegmentCount( mask_clearance, maxError, FULL_CIRCLE );
dummy.TransformShapeWithClearanceToPolygon( outline, UNDEFINED_LAYER, 0,
maxError, ERROR_INSIDE );
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outline.InflateWithLinkedHoles( mask_clearance, numSegs,
SHAPE_POLY_SET::PM_FAST );
// Initialize the dummy pad shape:
dummy.SetAnchorPadShape( PAD_SHAPE::CIRCLE );
dummy.SetShape( PAD_SHAPE::CUSTOM );
dummy.DeletePrimitivesList();
dummy.AddPrimitivePoly( outline, 0, true );
// Be sure the anchor pad is not bigger than the deflated shape because this
// anchor will be added to the pad shape when plotting the pad.
// So we set the anchor size to 0
dummy.SetSize( wxSize( 0,0 ) );
dummy.SetPosition( pad->GetPosition() );
dummy.SetOrientation( pad->GetOrientation() );
itemplotter.PlotPad( &dummy, color, padPlotMode );
}
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break;
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case PAD_SHAPE::CUSTOM:
{
// inflate/deflate a custom shape is a bit complex.
// so build a similar pad shape, and inflate/deflate the polygonal shape
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PAD dummy( *pad );
SHAPE_POLY_SET shape;
pad->MergePrimitivesAsPolygon( &shape );
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// Shape polygon can have holes so use InflateWithLinkedHoles(), not Inflate()
// which can create bad shapes if margin.x is < 0
int maxError = aBoard->GetDesignSettings().m_MaxError;
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int numSegs = GetArcToSegmentCount( mask_clearance, maxError, FULL_CIRCLE );
shape.InflateWithLinkedHoles( mask_clearance, numSegs, SHAPE_POLY_SET::PM_FAST );
dummy.DeletePrimitivesList();
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dummy.AddPrimitivePoly( shape, 0, true );
// Be sure the anchor pad is not bigger than the deflated shape because this
// anchor will be added to the pad shape when plotting the pad. So now the
// polygonal shape is built, we can clamp the anchor size
if( mask_clearance < 0 ) // we expect margin.x = margin.y for custom pads
dummy.SetSize( padPlotsSize );
itemplotter.PlotPad( &dummy, color, padPlotMode );
break;
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}
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}
// Restore the pad parameters modified by the plot code
pad->SetSize( padSize );
pad->SetDelta( padDelta );
pad->SetShape( padShape );
pad->SetRoundRectCornerRadius( padCornerRadius );
}
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aPlotter->EndBlock( nullptr );
}
// Plot vias on copper layers, and if aPlotOpt.GetPlotViaOnMaskLayer() is true,
// plot them on solder mask
GBR_METADATA gbr_metadata;
bool isOnCopperLayer = ( aLayerMask & LSET::AllCuMask() ).any();
if( isOnCopperLayer )
{
gbr_metadata.SetApertureAttrib( GBR_APERTURE_METADATA::GBR_APERTURE_ATTRIB_VIAPAD );
gbr_metadata.SetNetAttribType( GBR_NETLIST_METADATA::GBR_NETINFO_NET );
}
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aPlotter->StartBlock( nullptr );
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for( const PCB_TRACK* track : aBoard->Tracks() )
{
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const PCB_VIA* via = dyn_cast<const PCB_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( aLayerMask[B_Mask] || aLayerMask[F_Mask] )
via_margin = via->GetSolderMaskExpansion();
if( ( aLayerMask & LSET::AllCuMask() ).any() )
width_adj = itemplotter.getFineWidthAdj();
int diameter = via->GetWidth() + 2 * via_margin + width_adj;
/// Vias not connected to copper are optionally not drawn
if( onCopperLayer && !via->FlashLayer( aLayerMask ) )
continue;
// Don't draw a null size item :
if( diameter <= 0 )
continue;
// Some vias can be not connected (no net).
// Set the m_NotInNet for these vias to force a empty net name in gerber file
gbr_metadata.m_NetlistMetadata.m_NotInNet = via->GetNetname().IsEmpty();
gbr_metadata.SetNetName( via->GetNetname() );
COLOR4D color = aPlotOpt.ColorSettings()->GetColor(
LAYER_VIAS + static_cast<int>( via->GetViaType() ) );
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// 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, &gbr_metadata );
}
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aPlotter->EndBlock( nullptr );
aPlotter->StartBlock( nullptr );
gbr_metadata.SetApertureAttrib( GBR_APERTURE_METADATA::GBR_APERTURE_ATTRIB_CONDUCTOR );
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// Plot tracks (not vias) :
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for( const PCB_TRACK* track : aBoard->Tracks() )
{
if( track->Type() == PCB_VIA_T )
continue;
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if( !aLayerMask[track->GetLayer()] )
continue;
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// Some track segments can be not connected (no net).
// Set the m_NotInNet for these segments to force a empty net name in gerber file
gbr_metadata.m_NetlistMetadata.m_NotInNet = track->GetNetname().IsEmpty();
gbr_metadata.SetNetName( track->GetNetname() );
int width = track->GetWidth() + itemplotter.getFineWidthAdj();
aPlotter->SetColor( itemplotter.getColor( track->GetLayer() ) );
if( track->Type() == PCB_ARC_T )
{
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const PCB_ARC* arc = static_cast<const PCB_ARC*>( track );
// ThickArc expects only positive angle arcs, so flip start/end if
// we are negative
if( arc->GetAngle() < ANGLE_0 )
{
aPlotter->ThickArc( arc->GetCenter(), arc->GetEnd(), arc->GetStart(),
width, plotMode, &gbr_metadata );
}
else
{
aPlotter->ThickArc( arc->GetCenter(), arc->GetStart(), arc->GetEnd(),
width, plotMode, &gbr_metadata );
}
}
else
{
aPlotter->ThickSegment( track->GetStart(), track->GetEnd(), width, plotMode,
&gbr_metadata );
}
}
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aPlotter->EndBlock( nullptr );
2012-02-19 04:02:19 +00:00
// Plot filled ares
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aPlotter->StartBlock( nullptr );
NETINFO_ITEM nonet( aBoard );
for( const ZONE* zone : aBoard->Zones() )
{
for( PCB_LAYER_ID layer : zone->GetLayerSet().Seq() )
{
if( !aLayerMask[layer] )
continue;
SHAPE_POLY_SET mainArea = zone->GetFilledPolysList( layer )->CloneDropTriangulation();
SHAPE_POLY_SET islands;
for( int i = mainArea.OutlineCount() - 1; i >= 0; i-- )
{
if( zone->IsIsland( layer, i ) )
{
islands.AddOutline( mainArea.CPolygon( i )[0] );
mainArea.DeletePolygon( i );
}
}
itemplotter.PlotFilledAreas( zone, layer, mainArea );
if( !islands.IsEmpty() )
{
ZONE dummy( *zone );
dummy.SetNet( &nonet );
itemplotter.PlotFilledAreas( &dummy, layer, islands );
}
}
2009-06-29 05:30:08 +00:00
}
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aPlotter->EndBlock( nullptr );
// 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();
}
2021-07-19 23:56:05 +00:00
/**
* Plot outlines of copper layer.
2014-05-17 19:29:15 +00:00
*/
void PlotLayerOutlines( BOARD* aBoard, PLOTTER* aPlotter, LSET aLayerMask,
const PCB_PLOT_PARAMS& aPlotOpt )
2014-05-17 19:29:15 +00:00
{
BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
itemplotter.SetLayerSet( aLayerMask );
2014-05-17 19:29:15 +00:00
SHAPE_POLY_SET outlines;
2014-05-17 19:29:15 +00:00
for( LSEQ seq = aLayerMask.Seq( aLayerMask.SeqStackupBottom2Top() ); seq; ++seq )
2014-05-17 19:29:15 +00:00
{
PCB_LAYER_ID layer = *seq;
2014-05-17 19:29:15 +00:00
outlines.RemoveAllContours();
aBoard->ConvertBrdLayerToPolygonalContours( layer, outlines );
outlines.Simplify( SHAPE_POLY_SET::PM_FAST );
2014-05-17 19:29:15 +00:00
// Plot outlines
2022-01-11 00:49:49 +00:00
std::vector<VECTOR2I> cornerList;
2014-05-17 19:29:15 +00:00
// Now we have one or more basic polygons: plot each polygon
for( int ii = 0; ii < outlines.OutlineCount(); ii++ )
2014-05-17 19:29:15 +00:00
{
for( int kk = 0; kk <= outlines.HoleCount(ii); kk++ )
{
cornerList.clear();
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const SHAPE_LINE_CHAIN& path =
( kk == 0 ) ? outlines.COutline( ii ) : outlines.CHole( ii, kk - 1 );
aPlotter->PlotPoly( path, FILL_T::NO_FILL );
}
2014-05-17 19:29:15 +00:00
}
// Plot pad holes
if( aPlotOpt.GetDrillMarksType() != PCB_PLOT_PARAMS::NO_DRILL_SHAPE )
{
int smallDrill = ( aPlotOpt.GetDrillMarksType() == PCB_PLOT_PARAMS::SMALL_DRILL_SHAPE )
? Millimeter2iu( ADVANCED_CFG::GetCfg().m_SmallDrillMarkSize ) :
INT_MAX;
2020-11-13 15:15:52 +00:00
for( FOOTPRINT* footprint : aBoard->Footprints() )
2014-05-17 19:29:15 +00:00
{
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for( PAD* pad : footprint->Pads() )
2014-05-17 19:29:15 +00:00
{
if( pad->HasHole() )
2014-05-17 19:29:15 +00:00
{
std::shared_ptr<SHAPE_SEGMENT> slot = pad->GetEffectiveHoleShape();
if( slot->GetSeg().A == slot->GetSeg().B ) // circular hole
{
int drill = std::min( smallDrill, slot->GetWidth() );
aPlotter->Circle( pad->GetPosition(), drill, FILL_T::NO_FILL );
}
else
{
// Note: small drill marks have no significance when applied to slots
aPlotter->ThickSegment( slot->GetSeg().A,
slot->GetSeg().B,
slot->GetWidth(), SKETCH, nullptr );
}
2014-05-17 19:29:15 +00:00
}
}
}
}
// Plot vias holes
2021-06-11 21:07:02 +00:00
for( PCB_TRACK* track : aBoard->Tracks() )
2014-05-17 19:29:15 +00:00
{
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const PCB_VIA* via = dyn_cast<const PCB_VIA*>( track );
2014-05-17 19:29:15 +00:00
if( via && via->IsOnLayer( layer ) ) // via holes can be not through holes
aPlotter->Circle( via->GetPosition(), via->GetDrillValue(), FILL_T::NO_FILL );
2014-05-17 19:29:15 +00:00
}
}
}
2021-07-19 23:56:05 +00:00
/**
* 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
*
* We have 2 algos:
* the initial algo, that create polygons for every shape, inflate and deflate polygons
* with Min Thickness/2, and merges the result.
* Drawback: pads attributes are lost (annoying in Gerber)
* the new algo:
* create initial polygons for every shape (pad or polygon),
* inflate and deflate polygons
* with Min Thickness/2, and merges the result (like initial algo)
* remove all initial polygons.
* The remaining polygons are areas with thickness < min thickness
* plot all initial shapes by flashing (or using regions) for pad and polygons
* (shapes will be better) and remaining polygons to
* remove areas with thickness < min thickness from final mask
*
* TODO: remove old code after more testing.
*/
#define NEW_ALGO 1
void PlotSolderMaskLayer( BOARD *aBoard, PLOTTER* aPlotter, LSET aLayerMask,
const PCB_PLOT_PARAMS& aPlotOpt, int aMinThickness )
{
int maxError = aBoard->GetDesignSettings().m_MaxError;
PCB_LAYER_ID layer = aLayerMask[B_Mask] ? B_Mask : F_Mask;
SHAPE_POLY_SET buffer;
SHAPE_POLY_SET* boardOutline = nullptr;
if( aBoard->GetBoardPolygonOutlines( buffer ) )
boardOutline = &buffer;
// We remove 1nm as we expand both sides of the shapes, so allowing for a strictly greater
// than or equal comparison in the shape separation (boolean add)
int inflate = aMinThickness / 2 - 1;
BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
itemplotter.SetLayerSet( aLayerMask );
2020-11-13 15:15:52 +00:00
for( FOOTPRINT* footprint : aBoard->Footprints() )
itemplotter.PlotFootprintTextItems( footprint );
// Build polygons for each pad shape. The size of the shape on solder mask should be size
// of pad + clearance around the pad, where clearance = solder mask clearance + extra margin.
// Extra margin is half the min width for solder mask, which is used to merge too-close shapes
// (distance < aMinThickness), and will be removed when creating the actual shapes.
// Will contain shapes inflated by inflate value that will be merged and deflated by
// inflate value to build final polygons
// After calculations the remaining polygons are polygons to plot
SHAPE_POLY_SET areas;
2021-07-19 23:56:05 +00:00
// Will contain exact shapes of all items on solder mask
SHAPE_POLY_SET initialPolys;
#if NEW_ALGO
// Generate polygons with arcs inside the shape or exact shape to minimize shape changes
// created by arc to segment size correction.
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
DISABLE_ARC_RADIUS_CORRECTION disabler;
#endif
{
// Plot footprint pads and graphics
for( const FOOTPRINT* footprint : aBoard->Footprints() )
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
{
// add shapes with their exact mask layer size in initialPolys
2020-11-13 00:43:45 +00:00
footprint->TransformPadsWithClearanceToPolygon( initialPolys, layer, 0, maxError,
ERROR_OUTSIDE );
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
// add shapes inflated by aMinThickness/2 in areas
2020-11-13 00:43:45 +00:00
footprint->TransformPadsWithClearanceToPolygon( areas, layer, inflate, maxError,
ERROR_OUTSIDE );
for( const BOARD_ITEM* item : footprint->GraphicalItems() )
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
{
if( item->Type() == PCB_FP_SHAPE_T && item->IsOnLayer( layer ) )
{
// add shapes with their exact mask layer size in initialPolys
item->TransformShapeWithClearanceToPolygon( initialPolys, layer, 0, maxError,
ERROR_OUTSIDE );
// add shapes inflated by aMinThickness/2 in areas
item->TransformShapeWithClearanceToPolygon( areas, layer, inflate, maxError,
ERROR_OUTSIDE );
}
else if( item->Type() == PCB_FP_SHAPE_T && item->IsOnLayer( Edge_Cuts ) )
{
2022-01-30 10:52:52 +00:00
itemplotter.PlotFootprintShape( static_cast<const FP_SHAPE*>( item ) );
}
}
}
// Plot (untented) vias
for( const PCB_TRACK* track : aBoard->Tracks() )
{
const PCB_VIA* via = dyn_cast<const PCB_VIA*>( track );
// Note: IsOnLayer() checks relevant mask layers of untented vias
if( !via || !via->IsOnLayer( layer ) )
continue;
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
int clearance = via->GetSolderMaskExpansion();
// add shapes with their exact mask layer size in initialPolys
via->TransformShapeWithClearanceToPolygon( initialPolys, layer, clearance, maxError,
ERROR_OUTSIDE );
// add shapes inflated by aMinThickness/2 in areas
via->TransformShapeWithClearanceToPolygon( areas, layer, clearance + inflate, maxError,
ERROR_OUTSIDE );
}
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
// Add filled zone areas.
#if 0 // Set to 1 if a solder mask expansion must be applied to zones on solder mask
int zone_margin = aBoard->GetDesignSettings().m_SolderMaskExpansion;
#else
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
int zone_margin = 0;
#endif
for( const BOARD_ITEM* item : aBoard->Drawings() )
{
if( item->IsOnLayer( layer ) )
{
// add shapes with their exact mask layer size in initialPolys
item->TransformShapeWithClearanceToPolygon( initialPolys, layer, 0, maxError,
ERROR_OUTSIDE );
// add shapes inflated by aMinThickness/2 in areas
item->TransformShapeWithClearanceToPolygon( areas, layer, inflate, maxError,
ERROR_OUTSIDE );
}
else if( item->IsOnLayer( Edge_Cuts ) )
{
itemplotter.PlotPcbGraphicItem( item );
}
}
for( ZONE* zone : aBoard->Zones() )
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
{
if( !zone->IsOnLayer( layer ) )
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
continue;
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
// add shapes inflated by aMinThickness/2 in areas
zone->TransformSmoothedOutlineToPolygon( areas, inflate + zone_margin, maxError,
ERROR_OUTSIDE, boardOutline );
2021-07-19 23:56:05 +00:00
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
// add shapes with their exact mask layer size in initialPolys
zone->TransformSmoothedOutlineToPolygon( initialPolys, zone_margin, maxError,
ERROR_OUTSIDE, boardOutline );
Clean up arc/circle polygonization. 1) For a while now we've been using a calculated seg count from a given maxError, and a correction factor to push the radius out so that all the error is outside the arc/circle. However, the second calculation (which pre-dates the first) is pretty much just the inverse of the first (and yields nothing more than maxError back). This is particularly sub-optimal given the cost of trig functions. 2) There are a lot of old optimizations to reduce segcounts in certain situations, someting that our error-based calculation compensates for anyway. (Smaller radii need fewer segments to meet the maxError condition.) But perhaps more importantly we now surface maxError in the UI and we don't really want to call it "Max deviation except when it's not". 3) We were also clamping the segCount twice: once in the calculation routine and once in most of it's callers. Furthermore, the caller clamping was inconsistent (both in being done and in the clamping value). We now clamp only in the calculation routine. 4) There's no reason to use the correction factors in the 3Dviewer; it's just a visualization and whether the polygonization error is inside or outside the shape isn't really material. 5) The arc-correction-disabling stuff (used for solder mask layer) was somewhat fragile in that it depended on the caller to turn it back on afterwards. It's now only exposed as a RAII object which automatically cleans up when it goes out of scope. 6) There were also bugs in a couple of the polygonization routines where we'd accumulate round-off error in adding up the segments and end up with an overly long last segment (which of course would voilate the error max). This was the cause of the linked bug and also some issues with vias that we had fudged in the past with extra clearance. Fixes https://gitlab.com/kicad/code/kicad/issues/5567
2020-09-10 23:05:20 +00:00
}
}
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int numSegs = GetArcToSegmentCount( inflate, maxError, FULL_CIRCLE );
// Merge all polygons: After deflating, not merged (not overlapping) polygons
// will have the initial shape (with perhaps small changes due to deflating transform)
areas.Simplify( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
areas.Deflate( inflate, numSegs );
#if !NEW_ALGO
// To avoid a lot of code, use a ZONE to handle and plot polygons, because our polygons look
// exactly like filled areas in zones.
// Note, also this code is not optimized: it creates a lot of copy/duplicate data.
// However it is not complex, and fast enough for plot purposes (copy/convert data is only a
// very small calculation time for these calculations).
ZONE zone( aBoard );
zone.SetMinThickness( 0 ); // trace polygons only
zone.SetLayer( layer );
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// Combine the current areas to initial areas. This is mandatory because inflate/deflate
// transform is not perfect, and we want the initial areas perfectly kept
areas.BooleanAdd( initialPolys, SHAPE_POLY_SET::PM_FAST );
areas.Fracture( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
itemplotter.PlotFilledAreas( &zone, layer, areas );
#else
// Remove initial shapes: each shape will be added later, as flashed item or region
// with a suitable attribute.
// Do not merge pads is mandatory in Gerber files: They must be identified as pads
// we deflate areas in polygons, to avoid after subtracting initial shapes
// having small artifacts due to approximations during polygon transforms
areas.BooleanSubtract( initialPolys, SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
// Slightly inflate polygons to avoid any gap between them and other shapes,
// These gaps are created by arc to segments approximations
areas.Inflate( Millimeter2iu( 0.002 ), 6 );
// Now, only polygons with a too small thickness are stored in areas.
areas.Fracture( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
// Plot each initial shape (pads and polygons on mask layer), with suitable attributes:
PlotStandardLayer( aBoard, aPlotter, aLayerMask, aPlotOpt );
for( int ii = 0; ii < areas.OutlineCount(); ii++ )
{
const SHAPE_LINE_CHAIN& path = areas.COutline( ii );
// polygon area in mm^2 :
double curr_area = path.Area() / ( IU_PER_MM * IU_PER_MM );
// Skip very small polygons: they are certainly artifacts created by
// arc approximations and polygon transforms
// (inflate/deflate transforms)
constexpr double poly_min_area_mm2 = 0.01; // 0.01 mm^2 gives a good filtering
if( curr_area < poly_min_area_mm2 )
continue;
aPlotter->PlotPoly( path, FILL_T::FILLED_SHAPE );
}
#endif
}
/**
* Set up most plot options for plotting a board (especially the viewport)
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* Important thing:
* page size is the 'drawing' page size,
* paper size is the physical page size
*/
static void initializePlotter( PLOTTER* aPlotter, const BOARD* aBoard,
const PCB_PLOT_PARAMS* aPlotOpts )
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{
PAGE_INFO pageA4( wxT( "A4" ) );
const PAGE_INFO& pageInfo = aBoard->GetPageSettings();
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const PAGE_INFO* sheet_info;
double paperscale; // Page-to-paper ratio
wxSize paperSizeIU;
wxSize pageSizeIU( pageInfo.GetSizeIU() );
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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() )
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{
sheet_info = &pageA4;
paperSizeIU = pageA4.GetSizeIU();
paperscale = (double) paperSizeIU.x / pageSizeIU.x;
autocenter = true;
}
else
{
sheet_info = &pageInfo;
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paperSizeIU = pageSizeIU;
paperscale = 1;
// Need autocentering only if scale is not 1:1
autocenter = (aPlotOpts->GetScale() != 1.0);
}
EDA_RECT bbox = aBoard->ComputeBoundingBox();
VECTOR2I boardCenter = bbox.Centre();
VECTOR2I boardSize = bbox.GetSize();
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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
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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
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{
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compound_scale = aPlotOpts->GetScale() * paperscale;
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}
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// 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)
VECTOR2I offset( 0, 0);
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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->GetDesignSettings().GetAuxOrigin();
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}
aPlotter->SetPageSettings( *sheet_info );
aPlotter->SetViewport( offset, IU_PER_MILS/10, compound_scale, aPlotOpts->GetMirror() );
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// Has meaning only for gerber plotter. Must be called only after SetViewport
aPlotter->SetGerberCoordinatesFormat( aPlotOpts->GetGerberPrecision() );
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// Has meaning only for SVG plotter. Must be called only after SetViewport
aPlotter->SetSvgCoordinatesFormat( aPlotOpts->GetSvgPrecision() );
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aPlotter->SetCreator( wxT( "PCBNEW" ) );
aPlotter->SetColorMode( false ); // default is plot in Black and White.
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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 )
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{
const int margin = 5 * IU_PER_MM; // Add a 5 mm margin around the board
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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(), FILL_T::FILLED_SHAPE );
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aPlotter->SetColor( BLACK );
}
/**
* Calculate the effective size of HPGL pens and set them in the plotter object
*/
static void ConfigureHPGLPenSizes( HPGL_PLOTTER *aPlotter, const PCB_PLOT_PARAMS *aPlotOpts )
2012-08-29 16:59:50 +00:00
{
// Compute penDiam (the value is given in mils) in pcb units, with plot scale (if Scale is 2,
// penDiam value is always m_HPGLPenDiam so apparent penDiam is actually penDiam / Scale
int penDiam = KiROUND( aPlotOpts->GetHPGLPenDiameter() * IU_PER_MILS / aPlotOpts->GetScale() );
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// Set HPGL-specific options and start
aPlotter->SetPenSpeed( aPlotOpts->GetHPGLPenSpeed() );
aPlotter->SetPenNumber( aPlotOpts->GetHPGLPenNum() );
aPlotter->SetPenDiameter( penDiam );
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}
/**
* Open a new plotfile using the options (and especially the format) specified in the options
* and prepare the page for plotting.
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*
* @return the plotter object if OK, NULL if the file is not created (or has a problem).
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*/
PLOTTER* StartPlotBoard( BOARD *aBoard, const PCB_PLOT_PARAMS *aPlotOpts, int aLayer,
const wxString& aFullFileName, const wxString& aSheetName,
const wxString& aSheetPath )
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{
// Create the plotter driver and set the few plotter specific options
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PLOTTER* plotter = nullptr;
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switch( aPlotOpts->GetFormat() )
{
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case PLOT_FORMAT::DXF:
DXF_PLOTTER* DXF_plotter;
DXF_plotter = new DXF_PLOTTER();
DXF_plotter->SetUnits( aPlotOpts->GetDXFPlotUnits() );
plotter = DXF_plotter;
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break;
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case PLOT_FORMAT::POST:
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PS_PLOTTER* PS_plotter;
PS_plotter = new PS_PLOTTER();
PS_plotter->SetScaleAdjust( aPlotOpts->GetFineScaleAdjustX(),
aPlotOpts->GetFineScaleAdjustY() );
plotter = PS_plotter;
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break;
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case PLOT_FORMAT::PDF:
plotter = new PDF_PLOTTER();
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break;
2019-12-28 00:55:11 +00:00
case PLOT_FORMAT::HPGL:
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HPGL_PLOTTER* HPGL_plotter;
HPGL_plotter = new HPGL_PLOTTER();
// HPGL options are a little more convoluted to compute, so they get their own function
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ConfigureHPGLPenSizes( HPGL_plotter, aPlotOpts );
plotter = HPGL_plotter;
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break;
2019-12-28 00:55:11 +00:00
case PLOT_FORMAT::GERBER:
plotter = new GERBER_PLOTTER();
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break;
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case PLOT_FORMAT::SVG:
plotter = new SVG_PLOTTER();
break;
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default:
wxASSERT( false );
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return nullptr;
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}
2020-04-14 12:25:00 +00:00
KIGFX::PCB_RENDER_SETTINGS* renderSettings = new KIGFX::PCB_RENDER_SETTINGS();
renderSettings->LoadColors( aPlotOpts->ColorSettings() );
renderSettings->SetDefaultPenWidth( Millimeter2iu( 0.0212 ) ); // Hairline at 1200dpi
if( aLayer < GAL_LAYER_ID_END )
renderSettings->SetLayerName( aBoard->GetLayerName( ToLAYER_ID( aLayer ) ) );
2020-04-14 12:25:00 +00:00
plotter->SetRenderSettings( renderSettings );
// Compute the viewport and set the other options
// page layout is not mirrored, so temporarily change mirror option for the page layout
PCB_PLOT_PARAMS plotOpts = *aPlotOpts;
if( plotOpts.GetPlotFrameRef() && plotOpts.GetMirror() )
plotOpts.SetMirror( false );
initializePlotter( plotter, aBoard, &plotOpts );
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if( plotter->OpenFile( aFullFileName ) )
{
plotter->ClearHeaderLinesList();
// For the Gerber "file function" attribute, set the layer number
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if( plotter->GetPlotterType() == PLOT_FORMAT::GERBER )
{
bool useX2mode = plotOpts.GetUseGerberX2format();
GERBER_PLOTTER* gbrplotter = static_cast <GERBER_PLOTTER*> ( plotter );
gbrplotter->DisableApertMacros( plotOpts.GetDisableGerberMacros() );
gbrplotter->UseX2format( useX2mode );
gbrplotter->UseX2NetAttributes( plotOpts.GetIncludeGerberNetlistInfo() );
// Attributes can be added using X2 format or as comment (X1 format)
AddGerberX2Attribute( plotter, aBoard, aLayer, not useX2mode );
}
plotter->StartPlot();
// Plot the frame reference if requested
if( aPlotOpts->GetPlotFrameRef() )
{
PlotDrawingSheet( plotter, aBoard->GetProject(), aBoard->GetTitleBlock(),
aBoard->GetPageSettings(), wxT( "1" ), 1, aSheetName, aSheetPath,
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() )
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{
EDA_RECT bbox = aBoard->ComputeBoundingBox();
FillNegativeKnockout( plotter, bbox );
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}
return plotter;
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}
2020-04-14 12:25:00 +00:00
delete plotter->RenderSettings();
delete plotter;
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return nullptr;
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}