/** * @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) 1992-2022 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 #include #include #include #include #include // for KiROUND #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * 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 ); 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_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 ); 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 && 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 ); // 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; // 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 ); 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 ); break; default: plotOpt.SetSkipPlotNPTH_Pads( false ); plotOpt.SetDrillMarksType( PCB_PLOT_PARAMS::NO_DRILL_SHAPE ); 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 ); 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 ); 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() ) itemplotter.PlotFootprintTextItems( footprint ); // Draw footprint other graphic items: for( const FOOTPRINT* footprint : aBoard->Footprints() ) itemplotter.PlotFootprintGraphicItems( footprint ); // Plot footprint pads for( FOOTPRINT* footprint : aBoard->Footprints() ) { aPlotter->StartBlock( nullptr ); for( PAD* pad : footprint->Pads() ) { OUTLINE_MODE padPlotMode = plotMode; if( !( pad->GetLayerSet() & aLayerMask ).any() ) { if( sketchPads && ( ( onFrontFab && pad->GetLayerSet().Contains( F_Cu ) ) || ( onBackFab && pad->GetLayerSet().Contains( B_Cu ) ) ) ) { padPlotMode = SKETCH; } else { continue; } } /// 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 ); 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 VECTOR2I padPlotsSize = pad->GetSize() + margin * 2 + VECTOR2I( width_adj, width_adj ); // Store these parameters that can be modified to plot inflated/deflated pads shape PAD_SHAPE padShape = pad->GetShape(); VECTOR2I padSize = pad->GetSize(); 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; switch( pad->GetShape() ) { 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 ) ) { break; } itemplotter.PlotPad( pad, color, padPlotMode ); break; case PAD_SHAPE::RECT: pad->SetSize( padPlotsSize ); if( mask_clearance > 0 ) { pad->SetShape( PAD_SHAPE::ROUNDRECT ); pad->SetRoundRectCornerRadius( mask_clearance ); } itemplotter.PlotPad( pad, color, padPlotMode ); break; 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 ) { itemplotter.PlotPad( pad, color, padPlotMode ); } else { PAD dummy( *pad ); 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; int numSegs = GetArcToSegmentCount( mask_clearance, maxError, FULL_CIRCLE ); 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; 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; } 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 dummy.SetPosition( VECTOR2I( 0, 0 ) ); dummy.SetOrientation( ANGLE_0 ); SHAPE_POLY_SET outline; int maxError = aBoard->GetDesignSettings().m_MaxError; int numSegs = GetArcToSegmentCount( mask_clearance, maxError, FULL_CIRCLE ); dummy.TransformShapeWithClearanceToPolygon( outline, UNDEFINED_LAYER, 0, maxError, ERROR_INSIDE ); 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 ); } break; 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 PAD dummy( *pad ); SHAPE_POLY_SET shape; pad->MergePrimitivesAsPolygon( &shape ); // 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; int numSegs = GetArcToSegmentCount( mask_clearance, maxError, FULL_CIRCLE ); shape.InflateWithLinkedHoles( mask_clearance, numSegs, SHAPE_POLY_SET::PM_FAST ); dummy.DeletePrimitivesList(); 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; } } // Restore the pad parameters modified by the plot code pad->SetSize( padSize ); pad->SetDelta( padDelta ); pad->SetShape( padShape ); pad->SetRoundRectCornerRadius( padCornerRadius ); } 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 ); } aPlotter->StartBlock( nullptr ); for( const PCB_TRACK* track : aBoard->Tracks() ) { const PCB_VIA* via = dyn_cast( 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( 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, &gbr_metadata ); } aPlotter->EndBlock( nullptr ); aPlotter->StartBlock( nullptr ); gbr_metadata.SetApertureAttrib( GBR_APERTURE_METADATA::GBR_APERTURE_ATTRIB_CONDUCTOR ); // Plot tracks (not vias) : for( const PCB_TRACK* track : aBoard->Tracks() ) { if( track->Type() == PCB_VIA_T ) continue; if( !aLayerMask[track->GetLayer()] ) continue; // 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 ) { const PCB_ARC* arc = static_cast( 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 ); } } aPlotter->EndBlock( nullptr ); // Plot filled ares 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 ); } } } 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(); } /** * Plot outlines of copper layer. */ void PlotLayerOutlines( BOARD* aBoard, PLOTTER* aPlotter, LSET aLayerMask, const PCB_PLOT_PARAMS& aPlotOpt ) { BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt ); itemplotter.SetLayerSet( aLayerMask ); SHAPE_POLY_SET outlines; for( LSEQ seq = aLayerMask.Seq( aLayerMask.SeqStackupBottom2Top() ); seq; ++seq ) { PCB_LAYER_ID layer = *seq; outlines.RemoveAllContours(); aBoard->ConvertBrdLayerToPolygonalContours( layer, outlines ); outlines.Simplify( SHAPE_POLY_SET::PM_FAST ); // Plot outlines std::vector cornerList; // Now we have one or more basic polygons: plot each polygon for( int ii = 0; ii < outlines.OutlineCount(); ii++ ) { for( int kk = 0; kk <= outlines.HoleCount(ii); kk++ ) { cornerList.clear(); const SHAPE_LINE_CHAIN& path = ( kk == 0 ) ? outlines.COutline( ii ) : outlines.CHole( ii, kk - 1 ); aPlotter->PlotPoly( path, FILL_T::NO_FILL ); } } // 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; for( FOOTPRINT* footprint : aBoard->Footprints() ) { for( PAD* pad : footprint->Pads() ) { VECTOR2I hole = pad->GetDrillSize(); if( hole.x == 0 || hole.y == 0 ) continue; if( hole.x == hole.y ) { hole.x = std::min( smallDrill, hole.x ); aPlotter->Circle( pad->GetPosition(), hole.x, FILL_T::NO_FILL ); } else { // Note: small drill marks have no significance when applied to slots const SHAPE_SEGMENT* seg = pad->GetEffectiveHoleShape(); aPlotter->ThickSegment( seg->GetSeg().A, seg->GetSeg().B, seg->GetWidth(), SKETCH, nullptr ); } } } } // Plot vias holes for( PCB_TRACK* track : aBoard->Tracks() ) { const PCB_VIA* via = dyn_cast( track ); if( via && via->IsOnLayer( layer ) ) // via holes can be not through holes aPlotter->Circle( via->GetPosition(), via->GetDrillValue(), FILL_T::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 * * 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 ); 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; // 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. DISABLE_ARC_RADIUS_CORRECTION disabler; #endif { // Plot footprint pads and graphics for( const FOOTPRINT* footprint : aBoard->Footprints() ) { // add shapes with their exact mask layer size in initialPolys footprint->TransformPadsWithClearanceToPolygon( initialPolys, layer, 0, maxError, ERROR_OUTSIDE ); // add shapes inflated by aMinThickness/2 in areas footprint->TransformPadsWithClearanceToPolygon( areas, layer, inflate, maxError, ERROR_OUTSIDE ); for( const BOARD_ITEM* item : footprint->GraphicalItems() ) { 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 ) ) { itemplotter.PlotFootprintShape( static_cast( item ) ); } } } // Plot (untented) vias for( const PCB_TRACK* track : aBoard->Tracks() ) { const PCB_VIA* via = dyn_cast( track ); // Note: IsOnLayer() checks relevant mask layers of untented vias if( !via || !via->IsOnLayer( layer ) ) continue; 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 ); } // 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 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() ) { if( !zone->IsOnLayer( layer ) ) continue; // add shapes inflated by aMinThickness/2 in areas zone->TransformSmoothedOutlineToPolygon( areas, inflate + zone_margin, maxError, ERROR_OUTSIDE, boardOutline ); // add shapes with their exact mask layer size in initialPolys zone->TransformSmoothedOutlineToPolygon( initialPolys, zone_margin, maxError, ERROR_OUTSIDE, boardOutline ); } } 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 ); // 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) * 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 ) { 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() ) { 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(); VECTOR2I boardCenter = bbox.Centre(); VECTOR2I 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) VECTOR2I 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->GetDesignSettings().GetAuxOrigin(); } aPlotter->SetPageSettings( *sheet_info ); aPlotter->SetViewport( offset, IU_PER_MILS/10, compound_scale, aPlotOpts->GetMirror() ); // Has meaning only for gerber plotter. Must be called only after SetViewport aPlotter->SetGerberCoordinatesFormat( aPlotOpts->GetGerberPrecision() ); // Has meaning only for SVG plotter. Must be called only after SetViewport aPlotter->SetSvgCoordinatesFormat( aPlotOpts->GetSvgPrecision() ); 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(), FILL_T::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, const PCB_PLOT_PARAMS *aPlotOpts ) { // 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() ); // Set HPGL-specific options and start aPlotter->SetPenSpeed( aPlotOpts->GetHPGLPenSpeed() ); aPlotter->SetPenNumber( aPlotOpts->GetHPGLPenNum() ); aPlotter->SetPenDiameter( penDiam ); } /** * 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, const 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 = nullptr; switch( aPlotOpts->GetFormat() ) { case PLOT_FORMAT::DXF: DXF_PLOTTER* DXF_plotter; DXF_plotter = new DXF_PLOTTER(); DXF_plotter->SetUnits( aPlotOpts->GetDXFPlotUnits() ); plotter = 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 get their own 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 nullptr; } KIGFX::PCB_RENDER_SETTINGS* renderSettings = new KIGFX::PCB_RENDER_SETTINGS(); renderSettings->LoadColors( aPlotOpts->ColorSettings() ); renderSettings->SetDefaultPenWidth( Millimeter2iu( 0.0212 ) ); // Hairline at 1200dpi 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 ); if( plotter->OpenFile( aFullFileName ) ) { plotter->ClearHeaderLinesList(); // For the Gerber "file function" attribute, set the layer number if( plotter->GetPlotterType() == PLOT_FORMAT::GERBER ) { bool useX2mode = plotOpts.GetUseGerberX2format(); GERBER_PLOTTER* gbrplotter = static_cast ( 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, 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->RenderSettings(); delete plotter; return nullptr; }