Rework on DXF export.

3d-viewer/3d_draw.cpp

@@ -239,7 +239,7 @@ void EDA_3D_CANVAS::BuildBoard3DView()
     BOARD* pcb = GetBoard();
     bool realistic_mode = g_Parm_3D_Visu.IsRealisticMode();
 
-    // Number of segments to draw a circle using segments
+    // Number of segments to convert a circle to polygon
     const int       segcountforcircle   = 16;
     double          correctionFactor    = 1.0 / cos( M_PI / (segcountforcircle * 2) );
     const int       segcountLowQuality  = 12;   // segments to draw a circle with low quality

common/gr_basic.cpp

@@ -848,7 +848,7 @@ static void GRSClosedPoly( EDA_RECT* aClipBox, wxDC* aDC,
         // Close the polygon
         if( aPoints[lastpt] != aPoints[0] )
         {
-            GRLineTo( aClipBox, aDC, aPoints[lastpt].x, aPoints[lastpt].y, aWidth, aColor );
+            GRLineTo( aClipBox, aDC, aPoints[0].x, aPoints[0].y, aWidth, aColor );
         }
     }
 }

pcbnew/board_items_to_polygon_shape_transform.cpp

@@ -14,6 +14,7 @@
 #include <pcbnew.h>
 #include <wxPcbStruct.h>
 #include <trigo.h>
+#include <class_board.h>
 #include <class_pad.h>
 #include <class_track.h>
 #include <class_drawsegment.h>
@@ -38,6 +39,80 @@ static void addTextSegmToPoly( int x0, int y0, int xf, int yf )
                                            s_textCircle2SegmentCount, s_textWidth );
 }
 
+/**
+ * Function ConvertBrdLayerToPolygonalContours
+ * Build a set of polygons which are the outlines of copper items
+ * (pads, tracks, texts, zones)
+ * the holes in vias or pads are ignored
+ * Usefull to export the shape of copper layers to dxf polygons
+ * or 3D viewer
+ * the polygons are not merged.
+ * @param aLayer = A layer, like LAYER_N_BACK, etc.
+ * @param aOutlines The CPOLYGONS_LIST to fill in with main outlines.
+ * @return true if success, false if a contour is not valid
+ */
+void BOARD::ConvertBrdLayerToPolygonalContours( LAYER_NUM aLayer, CPOLYGONS_LIST& aOutlines )
+{
+    // Number of segments to convert a circle to a polygon
+    const int       segcountforcircle   = 16;
+    double          correctionFactor    = 1.0 / cos( M_PI / (segcountforcircle * 2) );
+
+    // convert tracks and vias:
+    for( TRACK* track = m_Track; track != NULL; track = track->Next() )
+    {
+        if( !track->IsOnLayer( aLayer ) )
+            continue;
+
+        track->TransformShapeWithClearanceToPolygon( aOutlines,
+                0, segcountforcircle, correctionFactor );
+    }
+
+    // convert pads
+    for( MODULE* module = m_Modules; module != NULL; module = module->Next() )
+    {
+        module->TransformPadsShapesWithClearanceToPolygon( aLayer,
+                aOutlines, 0, segcountforcircle, correctionFactor );
+
+        // Micro-wave modules may have items on copper layers
+        module->TransformGraphicShapesWithClearanceToPolygonSet( aLayer,
+                aOutlines, 0, segcountforcircle, correctionFactor );
+    }
+
+    // convert copper zones
+    for( int ii = 0; ii < GetAreaCount(); ii++ )
+    {
+        ZONE_CONTAINER* zone = GetArea( ii );
+        LAYER_NUM       zonelayer = zone->GetLayer();
+
+        if( zonelayer == aLayer )
+            zone->TransformSolidAreasShapesToPolygonSet(
+                aOutlines, segcountforcircle, correctionFactor );
+    }
+
+    // convert graphic items on copper layers (texts)
+    for( BOARD_ITEM* item = m_Drawings; item; item = item->Next() )
+    {
+        if( !item->IsOnLayer( aLayer ) )
+            continue;
+
+        switch( item->Type() )
+        {
+        case PCB_LINE_T:    // should not exist on copper layers
+            ( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon(
+                aOutlines, 0, segcountforcircle, correctionFactor );
+            break;
+
+        case PCB_TEXT_T:
+            ( (TEXTE_PCB*) item )->TransformShapeWithClearanceToPolygonSet(
+                aOutlines, 0, segcountforcircle, correctionFactor );
+            break;
+
+        default:
+            break;
+        }
+    }
+}
+
 /* generate pads shapes on layer aLayer as polygons,
  * and adds these polygons to aCornerBuffer
  * aCornerBuffer = the buffer to store polygons
@@ -614,43 +689,26 @@ bool D_PAD::BuildPadDrillShapePolygon( CPOLYGONS_LIST& aCornerBuffer,
                                        int aInflateValue, int aSegmentsPerCircle ) const
 {
     wxSize drillsize = GetDrillSize();
-    bool hasHole = drillsize.x && drillsize.y;
 
-    if( ! hasHole )
+    if( !drillsize.x || !drillsize.y )
         return false;
 
-    drillsize.x += aInflateValue;
-    drillsize.y += aInflateValue;
-
     if( drillsize.x == drillsize.y )    // usual round hole
     {
         TransformCircleToPolygon( aCornerBuffer, GetPosition(),
-                                  drillsize.x /2, aSegmentsPerCircle );
+                (drillsize.x / 2) + aInflateValue, aSegmentsPerCircle );
     }
     else    // Oblong hole
     {
-        wxPoint ends_offset;
+        wxPoint start, end;
         int width;
 
-        if( drillsize.x > drillsize.y )    // Horizontal oval
-        {
-            ends_offset.x = ( drillsize.x - drillsize.y ) / 2;
-            width = drillsize.y;
-        }
-        else    // Vertical oval
-        {
-            ends_offset.y = ( drillsize.y - drillsize.x ) / 2;
-            width = drillsize.x;
-        }
-
-        RotatePoint( &ends_offset, GetOrientation() );
+        GetOblongDrillGeometry( start, end, width );
 
-        wxPoint start  = GetPosition() + ends_offset;
-        wxPoint end  = GetPosition() - ends_offset;
+        width += aInflateValue * 2;
 
-        // Prepare the shape creation
-        TransformRoundedEndsSegmentToPolygon( aCornerBuffer, start, end,
-                                              aSegmentsPerCircle, width );
+        TransformRoundedEndsSegmentToPolygon( aCornerBuffer,
+                GetPosition() + start, GetPosition() + end, aSegmentsPerCircle, width );
     }
 
     return true;

pcbnew/class_board.h

@@ -685,6 +685,19 @@ public:
                                   CPOLYGONS_LIST& aHoles,
                                   wxString* aErrorText = NULL );
 
+    /**
+     * Function ConvertBrdLayerToPolygonalContours
+     * Build a set of polygons which are the outlines of copper items
+     * (pads, tracks, vias, texts, zones)
+     * Holes in vias or pads are ignored
+     * Usefull to export the shape of copper layers to dxf polygons
+     * or 3D viewer
+     * the polygons are not merged.
+     * @param aLayer = A copper layer, like LAYER_N_BACK, etc.
+     * @param aOutlines The CPOLYGONS_LIST to fill in with items outline.
+     */
+    void ConvertBrdLayerToPolygonalContours( LAYER_NUM aLayer, CPOLYGONS_LIST& aOutlines );
+
     /**
      * Function GetLayerName
      * returns the name of a layer given by aLayer.  Copper layers may

pcbnew/class_pad.cpp

@@ -637,6 +637,39 @@ bool D_PAD::IsOnLayer( LAYER_NUM aLayer ) const
 }
 
 
+void D_PAD::GetOblongDrillGeometry( wxPoint& aStartPoint,
+                                    wxPoint& aEndPoint, int& aWidth ) const
+{
+    // calculates the start point, end point and width
+    // of an equivalent segment which have the same position and width as the hole
+    int delta_cx, delta_cy;
+
+    wxSize halfsize = GetDrillSize();;
+    halfsize.x /= 2;
+    halfsize.y /= 2;
+
+    if( m_Drill.x > m_Drill.y )  // horizontal
+    {
+        delta_cx = halfsize.x - halfsize.y;
+        delta_cy = 0;
+        aWidth   = m_Drill.y;
+    }
+    else                         // vertical
+    {
+        delta_cx = 0;
+        delta_cy = halfsize.y - halfsize.x;
+        aWidth   = m_Drill.x;
+    }
+
+    RotatePoint( &delta_cx, &delta_cy, m_Orient );
+
+    aStartPoint.x = delta_cx;
+    aStartPoint.y = delta_cy;
+
+    aEndPoint.x = - delta_cx;
+    aEndPoint.y = - delta_cy;
+}
+
 bool D_PAD::HitTest( const wxPoint& aPosition ) const
 {
     int     dx, dy;

pcbnew/class_pad.h

@@ -169,6 +169,17 @@ public:
         { m_drillShape = aDrillShape; }
     PAD_DRILL_SHAPE_T GetDrillShape() const     { return m_drillShape; }
 
+    /**
+     * Function GetOblongDrillGeometry calculates the start point, end point and width
+     * of an equivalent segment which have the same position and width as the hole
+     * Usefull to plot/draw oblong holes like segments with rounded ends
+     * used in draw and plot functions
+     * @param aStartPoint = first point of the equivalent segment, relative to the pad position.
+     * @param aEndPoint = second point of the equivalent segment, relative to the pad position.
+     * @param aWidth = width equivalent segment.
+     */
+    void GetOblongDrillGeometry( wxPoint& aStartPoint, wxPoint& aEndPoint, int& aWidth ) const;
+
     void SetLayerMask( LAYER_MSK aLayerMask )   { m_layerMask = aLayerMask; }
     LAYER_MSK GetLayerMask() const              { return m_layerMask; }
 

pcbnew/class_pad_draw_functions.cpp

@@ -310,7 +310,6 @@ void D_PAD::Draw( EDA_DRAW_PANEL* aPanel, wxDC* aDC, GR_DRAWMODE aDraw_mode,
 void D_PAD::DrawShape( EDA_RECT* aClipBox, wxDC* aDC, PAD_DRAWINFO& aDrawInfo )
 {
     wxPoint coord[4];
-    int     delta_cx, delta_cy;
     double  angle = m_Orient;
     int     seg_width;
 
@@ -439,27 +438,12 @@ void D_PAD::DrawShape( EDA_RECT* aClipBox, wxDC* aDC, PAD_DRAWINFO& aDrawInfo )
             break;
 
         case PAD_DRILL_OBLONG:
-            halfsize.x = m_Drill.x >> 1;
-            halfsize.y = m_Drill.y >> 1;
-
-            if( m_Drill.x > m_Drill.y )  // horizontal
-            {
-                delta_cx = halfsize.x - halfsize.y;
-                delta_cy = 0;
-                seg_width    = m_Drill.y;
-            }
-            else                         // vertical
         {
-                delta_cx = 0;
-                delta_cy = halfsize.y - halfsize.x;
-                seg_width    = m_Drill.x;
+            wxPoint drl_start, drl_end;
+            GetOblongDrillGeometry( drl_start, drl_end, seg_width );
+            GRFilledSegment( aClipBox, aDC, holepos + drl_start,
+                             holepos + drl_end, seg_width, hole_color );
         }
-
-            RotatePoint( &delta_cx, &delta_cy, angle );
-
-            GRFillCSegm( aClipBox, aDC, holepos.x + delta_cx, holepos.y + delta_cy,
-                         holepos.x - delta_cx, holepos.y - delta_cy, seg_width,
-                         hole_color );
             break;
 
         default:

pcbnew/pcbplot.h

@@ -204,6 +204,17 @@ void PlotOneBoardLayer( BOARD *aBoard, PLOTTER* aPlotter, LAYER_NUM aLayer,
 void PlotStandardLayer( BOARD* aBoard, PLOTTER* aPlotter, LAYER_MSK aLayerMask,
                         const PCB_PLOT_PARAMS& aPlotOpt );
 
+/**
+ * Function PlotLayerOutlines
+ * plot copper outline of a copper layer.
+ * @param aBoard = the board to plot
+ * @param aPlotter = the plotter to use
+ * @param aLayerMask = the mask to define the layers to plot
+ * @param aPlotOpt = the plot options. Has meaning for some formats only
+ */
+void PlotLayerOutlines( BOARD *aBoard, PLOTTER* aPlotter,
+                        LAYER_MSK aLayerMask, const PCB_PLOT_PARAMS& aPlotOpt );
+
 /**
  * Function PlotSilkScreen
  * plot silkscreen layers which have specific requirements, mainly for pads.

pcbnew/plot_board_layers.cpp

@@ -176,10 +176,18 @@ void PlotOneBoardLayer( BOARD *aBoard, PLOTTER* aPlotter, LAYER_NUM aLayer,
     case LAYER_N_15:
     case LAST_COPPER_LAYER:
         // Skip NPTH pads on copper layers ( only if hole size == pad size ):
-        plotOpt.SetSkipPlotNPTH_Pads( true );
         // 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 );
+        }
         break;
 
     case SOLDERMASK_N_BACK:
@@ -190,7 +198,12 @@ void PlotOneBoardLayer( BOARD *aBoard, PLOTTER* aPlotter, LAYER_NUM aLayer,
 
         // 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 );
@@ -202,11 +215,18 @@ void PlotOneBoardLayer( BOARD *aBoard, PLOTTER* aPlotter, LAYER_NUM aLayer,
         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 SILKSCREEN_N_FRONT:
     case SILKSCREEN_N_BACK:
+        if( plotOpt.GetFormat() == PLOT_FORMAT_DXF )
+            PlotLayerOutlines( aBoard, aPlotter, layer_mask, plotOpt );
+        else
             PlotSilkScreen( aBoard, aPlotter, layer_mask, plotOpt );
 
         // Gerber: Subtract soldermask from silkscreen if enabled
@@ -444,6 +464,115 @@ void PlotStandardLayer( BOARD *aBoard, PLOTTER* aPlotter,
         itemplotter.PlotDrillMarks();
 }
 
+/* Plot outlines of copper, for copper layer
+ */
+#include "clipper.hpp"
+void PlotLayerOutlines( BOARD *aBoard, PLOTTER* aPlotter,
+                        LAYER_MSK aLayerMask, const PCB_PLOT_PARAMS& aPlotOpt )
+{
+
+    BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
+    itemplotter.SetLayerMask( aLayerMask );
+
+    CPOLYGONS_LIST outlines;
+
+    for( LAYER_NUM layer = FIRST_LAYER; layer < NB_PCB_LAYERS; layer++ )
+    {
+        LAYER_MSK layer_mask = GetLayerMask( layer );
+
+        if( (aLayerMask & layer_mask ) == 0 )
+            continue;
+
+        outlines.RemoveAllContours();
+        aBoard->ConvertBrdLayerToPolygonalContours( layer, outlines );
+
+        // Merge all overlapping polygons.
+        KI_POLYGON_SET kpolygons;
+        KI_POLYGON_SET ktmp;
+        outlines.ExportTo( ktmp );
+
+        kpolygons += ktmp;
+
+        // Plot outlines
+        std::vector< wxPoint > cornerList;
+
+        for( unsigned ii = 0; ii < kpolygons.size(); ii++ )
+        {
+            KI_POLYGON polygon = kpolygons[ii];
+
+            // polygon contains only one polygon, but it can have holes linked by
+            // overlapping segments.
+            // To plot clean outlines, we have to break this polygon into more polygons with
+            // no overlapping segments, using Clipper, because boost::polygon
+            // does not allow that
+            ClipperLib::Path raw_polygon;
+            ClipperLib::Paths normalized_polygons;
+
+            for( unsigned ic = 0; ic < polygon.size(); ic++ )
+            {
+                KI_POLY_POINT corner = *(polygon.begin() + ic);
+                raw_polygon.push_back( ClipperLib::IntPoint( corner.x(), corner.y() ) );
+            }
+
+            ClipperLib::SimplifyPolygon( raw_polygon, normalized_polygons );
+
+            // Now we have one or more basic polygons: plot each polygon
+            for( unsigned ii = 0; ii < normalized_polygons.size(); ii++ )
+            {
+                ClipperLib::Path& polygon = normalized_polygons[ii];
+                cornerList.clear();
+
+                for( unsigned jj = 0; jj < polygon.size(); jj++ )
+                    cornerList.push_back( wxPoint( polygon[jj].X , polygon[jj].Y ) );
+
+                // Ensure the polygon is closed
+                if( cornerList[0] != cornerList[cornerList.size()-1] )
+                    cornerList.push_back( cornerList[0] );
+
+                aPlotter->PlotPoly( cornerList, NO_FILL );
+            }
+        }
+
+        // Plot pad holes
+        if( aPlotOpt.GetDrillMarksType() != PCB_PLOT_PARAMS::NO_DRILL_SHAPE )
+        {
+            for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
+            {
+                for( D_PAD* pad = module->Pads(); pad; pad = pad->Next() )
+                {
+                    wxSize hole = pad->GetDrillSize();
+
+                    if( hole.x == 0 || hole.y == 0 )
+                        continue;
+
+                    if( hole.x == hole.y )
+                        aPlotter->Circle( pad->GetPosition(), hole.x, NO_FILL );
+                    else
+                    {
+                        wxPoint drl_start, drl_end;
+                        int width;
+                        pad->GetOblongDrillGeometry( drl_start, drl_end, width );
+                        aPlotter->ThickSegment( pad->GetPosition() + drl_start,
+                                pad->GetPosition() + drl_end, width, SKETCH );
+                    }
+                }
+            }
+        }
+
+        // Plot vias holes
+        for( TRACK* track = aBoard->m_Track; track; track = track->Next() )
+        {
+            const VIA* via = dynamic_cast<const VIA*>( track );
+
+            if( via && via->IsOnLayer( layer ) )    // via holes can be not through holes
+            {
+                aPlotter->Circle( via->GetPosition(), via->GetDrillValue(), NO_FILL );
+            }
+        }
+    }
+}
+
+
 /* Plot a solder mask layer.
  * Solder mask layers have a minimum thickness value and cannot be drawn like standard layers,
  * unless the minimum thickness is 0.