/* Build the filled solid areas data from real outlines (stored in m_Poly)
* The solid areas can be more than one on copper layers, and do not have holes
* ( holes are linked by overlapping segments to the main outline)
*/
bool ZONE_FILLER::fillSingleZone( const ZONE_CONTAINER* aZone, SHAPE_POLY_SET& aRawPolys,
SHAPE_POLY_SET& aFinalPolys ) const
{
SHAPE_POLY_SET smoothedPoly;
/* convert outlines + holes to outlines without holes (adding extra segments if necessary)
* m_Poly data is expected normalized, i.e. NormalizeAreaOutlines was used after building
* this zone
*/
if ( !aZone->BuildSmoothedPoly( smoothedPoly ) )
return false;
if( aZone->IsOnCopperLayer() )
{
computeRawFilledAreas( aZone, smoothedPoly, aRawPolys, aFinalPolys );
}
else
{
aRawPolys = smoothedPoly;
aFinalPolys = smoothedPoly;
aFinalPolys.Inflate( -aZone->GetMinThickness() / 2, 16 );
aFinalPolys.Fracture( SHAPE_POLY_SET::PM_FAST );
}
return true;
}
void D_PAD::TransformShapeWithClearanceToPolygon(
SHAPE_POLY_SET& aCornerBuffer, int aClearanceValue, int aError, bool ignoreLineWidth ) const
{
wxASSERT_MSG( !ignoreLineWidth, "IgnoreLineWidth has no meaning for pads." );
double angle = m_Orient;
int dx = (m_Size.x / 2) + aClearanceValue;
int dy = (m_Size.y / 2) + aClearanceValue;
wxPoint padShapePos = ShapePos(); /* Note: for pad having a shape offset,
* the pad position is NOT the shape position */
switch( GetShape() )
{
case PAD_SHAPE_CIRCLE:
{
TransformCircleToPolygon( aCornerBuffer, padShapePos, dx, aError );
}
break;
case PAD_SHAPE_OVAL:
// An oval pad has the same shape as a segment with rounded ends
{
int width;
wxPoint shape_offset;
if( dy > dx ) // Oval pad X/Y ratio for choosing translation axis
{
shape_offset.y = dy - dx;
width = dx * 2;
}
else //if( dy <= dx )
{
shape_offset.x = dy - dx;
width = dy * 2;
}
RotatePoint( &shape_offset, angle );
wxPoint start = padShapePos - shape_offset;
wxPoint end = padShapePos + shape_offset;
TransformOvalClearanceToPolygon( aCornerBuffer, start, end, width, aError );
}
break;
case PAD_SHAPE_TRAPEZOID:
case PAD_SHAPE_RECT:
{
wxPoint corners[4];
BuildPadPolygon( corners, wxSize( 0, 0 ), angle );
SHAPE_POLY_SET outline;
outline.NewOutline();
for( int ii = 0; ii < 4; ii++ )
{
corners[ii] += padShapePos;
outline.Append( corners[ii].x, corners[ii].y );
}
int numSegs = std::max( GetArcToSegmentCount( aClearanceValue, aError, 360.0 ), 6 );
double correction = GetCircletoPolyCorrectionFactor( numSegs );
int rounding_radius = KiROUND( aClearanceValue * correction );
outline.Inflate( rounding_radius, numSegs );
aCornerBuffer.Append( outline );
}
break;
case PAD_SHAPE_CHAMFERED_RECT:
case PAD_SHAPE_ROUNDRECT:
{
SHAPE_POLY_SET outline;
int radius = GetRoundRectCornerRadius() + aClearanceValue;
int numSegs = std::max( GetArcToSegmentCount( radius, aError, 360.0 ), 6 );
double correction = GetCircletoPolyCorrectionFactor( numSegs );
int clearance = KiROUND( aClearanceValue * correction );
int rounding_radius = GetRoundRectCornerRadius() + clearance;
wxSize shapesize( m_Size );
shapesize.x += clearance * 2;
shapesize.y += clearance * 2;
bool doChamfer = GetShape() == PAD_SHAPE_CHAMFERED_RECT;
TransformRoundChamferedRectToPolygon( outline, padShapePos, shapesize, angle,
rounding_radius, doChamfer ? GetChamferRectRatio() : 0.0,
doChamfer ? GetChamferPositions() : 0, aError );
aCornerBuffer.Append( outline );
}
break;
case PAD_SHAPE_CUSTOM:
{
int numSegs = std::max( GetArcToSegmentCount( aClearanceValue, aError, 360.0 ), 6 );
double correction = GetCircletoPolyCorrectionFactor( numSegs );
int clearance = KiROUND( aClearanceValue * correction );
SHAPE_POLY_SET outline; // Will contain the corners in board coordinates
outline.Append( m_customShapeAsPolygon );
CustomShapeAsPolygonToBoardPosition( &outline, GetPosition(), GetOrientation() );
outline.Simplify( SHAPE_POLY_SET::PM_FAST );
outline.Inflate( clearance, numSegs );
outline.Fracture( SHAPE_POLY_SET::PM_FAST );
aCornerBuffer.Append( outline );
}
break;
}
}
/* Plot a solder mask layer.
* Solder mask layers have a minimum thickness value and cannot be drawn like standard layers,
* unless the minimum thickness is 0.
* Currently the algo is:
* 1 - build all pad shapes as polygons with a size inflated by
* mask clearance + (min width solder mask /2)
* 2 - Merge shapes
* 3 - deflate result by (min width solder mask /2)
* 4 - oring result by all pad shapes as polygons with a size inflated by
* mask clearance only (because deflate sometimes creates shape artifacts)
* 5 - draw result as polygons
*
* TODO:
* make this calculation only for shapes with clearance near than (min width solder mask)
* (using DRC algo)
* plot all other shapes by flashing the basing shape
* (shapes will be better, and calculations faster)
*/
void PlotSolderMaskLayer( BOARD *aBoard, PLOTTER* aPlotter,
LSET aLayerMask, const PCB_PLOT_PARAMS& aPlotOpt,
int aMinThickness )
{
LAYER_ID layer = aLayerMask[B_Mask] ? B_Mask : F_Mask;
int inflate = aMinThickness/2;
BRDITEMS_PLOTTER itemplotter( aPlotter, aBoard, aPlotOpt );
itemplotter.SetLayerSet( aLayerMask );
// Plot edge layer and graphic items
// They do not have a solder Mask margin, because they are only graphic items
// on this layer (like logos), not actually areas around pads.
itemplotter.PlotBoardGraphicItems();
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
for( BOARD_ITEM* item = module->GraphicalItems(); item; item = item->Next() )
{
if( layer != item->GetLayer() )
continue;
switch( item->Type() )
{
case PCB_MODULE_EDGE_T:
itemplotter.Plot_1_EdgeModule( (EDGE_MODULE*) item );
break;
default:
break;
}
}
}
// Build polygons for each pad shape.
// the size of the shape on solder mask should be:
// size of pad + clearance around the pad.
// clearance = solder mask clearance + extra margin
// extra margin is half the min width for solder mask
// This extra margin is used to merge too close shapes
// (distance < aMinThickness), and will be removed when creating
// the actual shapes
SHAPE_POLY_SET areas; // Contains shapes to plot
SHAPE_POLY_SET initialPolys; // Contains exact shapes to plot
/* calculates the coeff to compensate radius reduction of holes clearance
* due to the segment approx ( 1 /cos( PI/circleToSegmentsCount )
*/
int circleToSegmentsCount = 32;
double correction = 1.0 / cos( M_PI / circleToSegmentsCount );
// Plot pads
for( MODULE* module = aBoard->m_Modules; module; module = module->Next() )
{
// add shapes with exact size
module->TransformPadsShapesWithClearanceToPolygon( layer,
initialPolys, 0,
circleToSegmentsCount, correction );
// add shapes inflated by aMinThickness/2
module->TransformPadsShapesWithClearanceToPolygon( layer,
areas, inflate,
circleToSegmentsCount, correction );
}
// Plot vias on solder masks, if aPlotOpt.GetPlotViaOnMaskLayer() is true,
if( aPlotOpt.GetPlotViaOnMaskLayer() )
{
// The current layer is a solder mask,
// use the global mask clearance for vias
int via_clearance = aBoard->GetDesignSettings().m_SolderMaskMargin;
int via_margin = via_clearance + inflate;
for( TRACK* track = aBoard->m_Track; track; track = track->Next() )
{
const VIA* via = dyn_cast<const VIA*>( track );
if( !via )
continue;
// vias are plotted only if they are on the corresponding
// external copper layer
LSET via_set = via->GetLayerSet();
if( via_set[B_Cu] )
via_set.set( B_Mask );
if( via_set[F_Cu] )
via_set.set( F_Mask );
if( !( via_set & aLayerMask ).any() )
continue;
via->TransformShapeWithClearanceToPolygon( areas, via_margin,
circleToSegmentsCount,
correction );
via->TransformShapeWithClearanceToPolygon( initialPolys, via_clearance,
circleToSegmentsCount,
correction );
}
}
// Add filled zone areas.
#if 0 // Set to 1 if a solder mask margin must be applied to zones on solder mask
int zone_margin = aBoard->GetDesignSettings().m_SolderMaskMargin;
#else
int zone_margin = 0;
#endif
for( int ii = 0; ii < aBoard->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* zone = aBoard->GetArea( ii );
if( zone->GetLayer() != layer )
continue;
zone->TransformOutlinesShapeWithClearanceToPolygon( areas,
inflate+zone_margin, false );
zone->TransformOutlinesShapeWithClearanceToPolygon( initialPolys,
zone_margin, false );
}
// To avoid a lot of code, use a ZONE_CONTAINER
// 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_CONTAINER zone( aBoard );
zone.SetArcSegmentCount( 32 );
zone.SetMinThickness( 0 ); // trace polygons only
zone.SetLayer ( layer );
areas.BooleanAdd( initialPolys );
areas.Inflate( -inflate, circleToSegmentsCount );
// 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 );
areas.Fracture();
zone.AddFilledPolysList( areas );
itemplotter.PlotFilledAreas( &zone );
}
/**
* DXF polygon: doesn't fill it but at least it close the filled ones
* DXF does not know thick outline.
* It does not know thhick segments, therefore filled polygons with thick outline
* are converted to inflated polygon by aWidth/2
*/
void DXF_PLOTTER::PlotPoly( const std::vector<wxPoint>& aCornerList,
FILL_T aFill, int aWidth)
{
if( aCornerList.size() <= 1 )
return;
unsigned last = aCornerList.size() - 1;
// Plot outlines with lines (thickness = 0) to define the polygon
if( aWidth <= 0 )
{
MoveTo( aCornerList[0] );
for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
LineTo( aCornerList[ii] );
// Close polygon if 'fill' requested
if( aFill )
{
if( aCornerList[last] != aCornerList[0] )
LineTo( aCornerList[0] );
}
PenFinish();
return;
}
// if the polygon outline has thickness, and is not filled
// (i.e. is a polyline) plot outlines with thick segments
if( aWidth > 0 && !aFill )
{
MoveTo( aCornerList[0] );
for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
ThickSegment( aCornerList[ii-1], aCornerList[ii],
aWidth, FILLED );
return;
}
// The polygon outline has thickness, and is filled
// Build and plot the polygon which contains the initial
// polygon and its thick outline
SHAPE_POLY_SET bufferOutline;
SHAPE_POLY_SET bufferPolybase;
const int circleToSegmentsCount = 16;
bufferPolybase.NewOutline();
// enter outline as polygon:
for( unsigned ii = 1; ii < aCornerList.size(); ii++ )
{
TransformRoundedEndsSegmentToPolygon( bufferOutline,
aCornerList[ii-1], aCornerList[ii], circleToSegmentsCount, aWidth );
}
// enter the initial polygon:
for( unsigned ii = 0; ii < aCornerList.size(); ii++ )
{
bufferPolybase.Append( aCornerList[ii] );
}
// Merge polygons to build the polygon which contains the initial
// polygon and its thick outline
bufferPolybase.BooleanAdd( bufferOutline ); // create the outline which contains thick outline
bufferPolybase.Fracture();
if( bufferPolybase.OutlineCount() < 1 ) // should not happen
return;
const SHAPE_LINE_CHAIN& path = bufferPolybase.COutline( 0 );
if( path.PointCount() < 2 ) // should not happen
return;
// Now, output the final polygon to DXF file:
last = path.PointCount() - 1;
VECTOR2I point = path.CPoint( 0 );
wxPoint startPoint( point.x, point.y );
MoveTo( startPoint );
for( int ii = 1; ii < path.PointCount(); ii++ )
{
point = path.CPoint( ii );
LineTo( wxPoint( point.x, point.y ) );
}
// Close polygon, if needed
point = path.CPoint( last );
wxPoint endPoint( point.x, point.y );
if( endPoint != startPoint )
LineTo( startPoint );
PenFinish();
}
void ZONE_CONTAINER::AddClearanceAreasPolygonsToPolysList_NG( BOARD* aPcb )
{
int segsPerCircle;
double correctionFactor;
int outline_half_thickness = m_ZoneMinThickness / 2;
std::auto_ptr<SHAPE_FILE_IO> dumper( new SHAPE_FILE_IO(
g_DumpZonesWhenFilling ? "zones_dump.txt" : "", SHAPE_FILE_IO::IOM_APPEND ) );
// Set the number of segments in arc approximations
if( m_ArcToSegmentsCount == ARC_APPROX_SEGMENTS_COUNT_HIGHT_DEF )
segsPerCircle = ARC_APPROX_SEGMENTS_COUNT_HIGHT_DEF;
else
segsPerCircle = ARC_APPROX_SEGMENTS_COUNT_LOW_DEF;
/* calculates the coeff to compensate radius reduction of holes clearance
* due to the segment approx.
* For a circle the min radius is radius * cos( 2PI / s_CircleToSegmentsCount / 2)
* s_Correction is 1 /cos( PI/s_CircleToSegmentsCount )
*/
correctionFactor = 1.0 / cos( M_PI / (double) segsPerCircle );
CPOLYGONS_LIST tmp;
if(g_DumpZonesWhenFilling)
dumper->BeginGroup("clipper-zone");
SHAPE_POLY_SET solidAreas = ConvertPolyListToPolySet( m_smoothedPoly->m_CornersList );
solidAreas.Inflate( -outline_half_thickness, segsPerCircle );
solidAreas.Simplify( POLY_CALC_MODE );
SHAPE_POLY_SET holes;
if(g_DumpZonesWhenFilling)
dumper->Write( &solidAreas, "solid-areas" );
tmp.RemoveAllContours();
buildFeatureHoleList( aPcb, holes );
if(g_DumpZonesWhenFilling)
dumper->Write( &holes, "feature-holes" );
holes.Simplify( POLY_CALC_MODE );
if (g_DumpZonesWhenFilling)
dumper->Write( &holes, "feature-holes-postsimplify" );
solidAreas.BooleanSubtract( holes, POLY_CALC_MODE );
if (g_DumpZonesWhenFilling)
dumper->Write( &solidAreas, "solid-areas-minus-holes" );
SHAPE_POLY_SET fractured = solidAreas;
fractured.Fracture( POLY_CALC_MODE );
if (g_DumpZonesWhenFilling)
dumper->Write( &fractured, "fractured" );
m_FilledPolysList = fractured;
// Remove insulated islands:
if( GetNetCode() > 0 )
TestForCopperIslandAndRemoveInsulatedIslands( aPcb );
SHAPE_POLY_SET thermalHoles;
// Test thermal stubs connections and add polygons to remove unconnected stubs.
// (this is a refinement for thermal relief shapes)
if( GetNetCode() > 0 )
BuildUnconnectedThermalStubsPolygonList( thermalHoles, aPcb, this,
correctionFactor, s_thermalRot );
// remove copper areas corresponding to not connected stubs
if( !thermalHoles.IsEmpty() )
{
thermalHoles.Simplify( POLY_CALC_MODE );
// Remove unconnected stubs
solidAreas.BooleanSubtract( thermalHoles, POLY_CALC_MODE );
if( g_DumpZonesWhenFilling )
dumper->Write( &thermalHoles, "thermal-holes" );
// put these areas in m_FilledPolysList
SHAPE_POLY_SET fractured = solidAreas;
fractured.Fracture( POLY_CALC_MODE );
if( g_DumpZonesWhenFilling )
dumper->Write ( &fractured, "fractured" );
m_FilledPolysList = fractured;
if( GetNetCode() > 0 )
TestForCopperIslandAndRemoveInsulatedIslands( aPcb );
}
if(g_DumpZonesWhenFilling)
dumper->EndGroup();
}