double MODULE::PadCoverageRatio() const
{
double padArea = 0.0;
double moduleArea = GetFootprintRect().GetArea();
for( D_PAD* pad = m_Pads; pad; pad = pad->Next() )
padArea += pad->GetBoundingBox().GetArea();
if( moduleArea == 0.0 )
return 1.0;
double ratio = padArea / moduleArea;
return std::min( ratio, 1.0 );
}
EDA_RECT MODULE::GetFootprintRect() const
{
EDA_RECT area;
area.SetOrigin( m_Pos );
area.SetEnd( m_Pos );
area.Inflate( Millimeter2iu( 0.25 ) ); // Give a min size to the area
for( const BOARD_ITEM* item = m_Drawings.GetFirst(); item; item = item->Next() )
{
const EDGE_MODULE *edge = dynamic_cast<const EDGE_MODULE*>( item );
if( edge )
area.Merge( edge->GetBoundingBox() );
}
for( D_PAD* pad = m_Pads; pad; pad = pad->Next() )
area.Merge( pad->GetBoundingBox() );
return area;
}
void DIALOG_PAD_PROPERTIES::PadPropertiesAccept( wxCommandEvent& event )
{
if( !padValuesOK() )
return;
bool rastnestIsChanged = false;
int isign = m_isFlipped ? -1 : 1;
transferDataToPad( m_padMaster );
// m_padMaster is a pattern: ensure there is no net for this pad:
m_padMaster->SetNetCode( NETINFO_LIST::UNCONNECTED );
if( m_currentPad ) // Set current Pad parameters
{
wxSize size;
MODULE* module = m_currentPad->GetParent();
m_parent->SaveCopyInUndoList( module, UR_CHANGED );
module->SetLastEditTime();
// redraw the area where the pad was, without pad (delete pad on screen)
m_currentPad->SetFlags( DO_NOT_DRAW );
m_parent->GetCanvas()->RefreshDrawingRect( m_currentPad->GetBoundingBox() );
m_currentPad->ClearFlags( DO_NOT_DRAW );
// Update values
m_currentPad->SetShape( m_padMaster->GetShape() );
m_currentPad->SetAttribute( m_padMaster->GetAttribute() );
if( m_currentPad->GetPosition() != m_padMaster->GetPosition() )
{
m_currentPad->SetPosition( m_padMaster->GetPosition() );
rastnestIsChanged = true;
}
// compute the pos 0 value, i.e. pad position for module with orientation = 0
// i.e. relative to module origin (module position)
wxPoint pt = m_currentPad->GetPosition() - module->GetPosition();
RotatePoint( &pt, -module->GetOrientation() );
m_currentPad->SetPos0( pt );
m_currentPad->SetOrientation( m_padMaster->GetOrientation() * isign + module->GetOrientation() );
m_currentPad->SetSize( m_padMaster->GetSize() );
size = m_padMaster->GetDelta();
size.y *= isign;
m_currentPad->SetDelta( size );
m_currentPad->SetDrillSize( m_padMaster->GetDrillSize() );
m_currentPad->SetDrillShape( m_padMaster->GetDrillShape() );
wxPoint offset = m_padMaster->GetOffset();
offset.y *= isign;
m_currentPad->SetOffset( offset );
m_currentPad->SetPadToDieLength( m_padMaster->GetPadToDieLength() );
if( m_currentPad->GetLayerSet() != m_padMaster->GetLayerSet() )
{
rastnestIsChanged = true;
m_currentPad->SetLayerSet( m_padMaster->GetLayerSet() );
}
if( m_isFlipped )
m_currentPad->SetLayerSet( FlipLayerMask( m_currentPad->GetLayerSet() ) );
m_currentPad->SetPadName( m_padMaster->GetPadName() );
wxString padNetname;
// For PAD_HOLE_NOT_PLATED, ensure there is no net name selected
if( m_padMaster->GetAttribute() != PAD_HOLE_NOT_PLATED )
padNetname = m_PadNetNameCtrl->GetValue();
if( m_currentPad->GetNetname() != padNetname )
{
const NETINFO_ITEM* netinfo = m_board->FindNet( padNetname );
if( !padNetname.IsEmpty() && netinfo == NULL )
{
DisplayError( NULL, _( "Unknown netname, netname not changed" ) );
}
else
{
rastnestIsChanged = true;
m_currentPad->SetNetCode( netinfo->GetNet() );
}
}
m_currentPad->SetLocalClearance( m_padMaster->GetLocalClearance() );
m_currentPad->SetLocalSolderMaskMargin( m_padMaster->GetLocalSolderMaskMargin() );
m_currentPad->SetLocalSolderPasteMargin( m_padMaster->GetLocalSolderPasteMargin() );
m_currentPad->SetLocalSolderPasteMarginRatio( m_padMaster->GetLocalSolderPasteMarginRatio() );
m_currentPad->SetZoneConnection( m_padMaster->GetZoneConnection() );
m_currentPad->SetThermalWidth( m_padMaster->GetThermalWidth() );
m_currentPad->SetThermalGap( m_padMaster->GetThermalGap() );
module->CalculateBoundingBox();
m_parent->SetMsgPanel( m_currentPad );
// redraw the area where the pad was
m_parent->GetCanvas()->RefreshDrawingRect( m_currentPad->GetBoundingBox() );
m_parent->OnModify();
}
EndModal( wxID_OK );
if( rastnestIsChanged ) // The net ratsnest must be recalculated
m_board->m_Status_Pcb = 0;
}
void ZONE_CONTAINER::buildFeatureHoleList( BOARD* aPcb, SHAPE_POLY_SET& aFeatures )
{
int segsPerCircle;
double correctionFactor;
// 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 );
aFeatures.RemoveAllContours();
int outline_half_thickness = m_ZoneMinThickness / 2;
int zone_clearance = std::max( m_ZoneClearance, GetClearance() );
zone_clearance += outline_half_thickness;
/* store holes (i.e. tracks and pads areas as polygons outlines)
* in a polygon list
*/
/* items ouside the zone bounding box are skipped
* the bounding box is the zone bounding box + the biggest clearance found in Netclass list
*/
EDA_RECT item_boundingbox;
EDA_RECT zone_boundingbox = GetBoundingBox();
int biggest_clearance = aPcb->GetDesignSettings().GetBiggestClearanceValue();
biggest_clearance = std::max( biggest_clearance, zone_clearance );
zone_boundingbox.Inflate( biggest_clearance );
/*
* First : Add pads. Note: pads having the same net as zone are left in zone.
* Thermal shapes will be created later if necessary
*/
int item_clearance;
/* Use a dummy pad to calculate hole clerance when a pad is not on all copper layers
* and this pad has a hole
* This dummy pad has the size and shape of the hole
* Therefore, this dummy pad is a circle or an oval.
* A pad must have a parent because some functions expect a non null parent
* to find the parent board, and some other data
*/
MODULE dummymodule( aPcb ); // Creates a dummy parent
D_PAD dummypad( &dummymodule );
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
D_PAD* nextpad;
for( D_PAD* pad = module->Pads(); pad != NULL; pad = nextpad )
{
nextpad = pad->Next(); // pad pointer can be modified by next code, so
// calculate the next pad here
if( !pad->IsOnLayer( GetLayer() ) )
{
/* Test for pads that are on top or bottom only and have a hole.
* There are curious pads but they can be used for some components that are
* inside the board (in fact inside the hole. Some photo diodes and Leds are
* like this)
*/
if( pad->GetDrillSize().x == 0 && pad->GetDrillSize().y == 0 )
continue;
// Use a dummy pad to calculate a hole shape that have the same dimension as
// the pad hole
dummypad.SetSize( pad->GetDrillSize() );
dummypad.SetOrientation( pad->GetOrientation() );
dummypad.SetShape( pad->GetDrillShape() == PAD_DRILL_SHAPE_OBLONG ?
PAD_SHAPE_OVAL : PAD_SHAPE_CIRCLE );
dummypad.SetPosition( pad->GetPosition() );
pad = &dummypad;
}
// Note: netcode <=0 means not connected item
if( ( pad->GetNetCode() != GetNetCode() ) || ( pad->GetNetCode() <= 0 ) )
{
item_clearance = pad->GetClearance() + outline_half_thickness;
item_boundingbox = pad->GetBoundingBox();
item_boundingbox.Inflate( item_clearance );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
int clearance = std::max( zone_clearance, item_clearance );
pad->TransformShapeWithClearanceToPolygon( aFeatures,
clearance,
segsPerCircle,
correctionFactor );
}
continue;
}
// Pads are removed from zone if the setup is PAD_ZONE_CONN_NONE
if( GetPadConnection( pad ) == PAD_ZONE_CONN_NONE )
{
int gap = zone_clearance;
int thermalGap = GetThermalReliefGap( pad );
gap = std::max( gap, thermalGap );
item_boundingbox = pad->GetBoundingBox();
item_boundingbox.Inflate( gap );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
pad->TransformShapeWithClearanceToPolygon( aFeatures,
gap,
segsPerCircle,
correctionFactor );
}
}
}
}
/* Add holes (i.e. tracks and vias areas as polygons outlines)
* in cornerBufferPolysToSubstract
*/
for( TRACK* track = aPcb->m_Track; track; track = track->Next() )
{
if( !track->IsOnLayer( GetLayer() ) )
continue;
if( track->GetNetCode() == GetNetCode() && (GetNetCode() != 0) )
continue;
item_clearance = track->GetClearance() + outline_half_thickness;
item_boundingbox = track->GetBoundingBox();
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
int clearance = std::max( zone_clearance, item_clearance );
track->TransformShapeWithClearanceToPolygon( aFeatures,
clearance,
segsPerCircle,
correctionFactor );
}
}
/* Add module edge items that are on copper layers
* Pcbnew allows these items to be on copper layers in microwave applictions
* This is a bad thing, but must be handled here, until a better way is found
*/
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
for( BOARD_ITEM* item = module->GraphicalItems(); item; item = item->Next() )
{
if( !item->IsOnLayer( GetLayer() ) && !item->IsOnLayer( Edge_Cuts ) )
continue;
if( item->Type() != PCB_MODULE_EDGE_T )
continue;
item_boundingbox = item->GetBoundingBox();
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
( (EDGE_MODULE*) item )->TransformShapeWithClearanceToPolygon(
aFeatures, zone_clearance,
segsPerCircle, correctionFactor );
}
}
}
// Add graphic items (copper texts) and board edges
for( BOARD_ITEM* item = aPcb->m_Drawings; item; item = item->Next() )
{
if( item->GetLayer() != GetLayer() && item->GetLayer() != Edge_Cuts )
continue;
switch( item->Type() )
{
case PCB_LINE_T:
( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon(
aFeatures,
zone_clearance, segsPerCircle, correctionFactor );
break;
case PCB_TEXT_T:
( (TEXTE_PCB*) item )->TransformBoundingBoxWithClearanceToPolygon(
aFeatures, zone_clearance );
break;
default:
break;
}
}
// Add zones outlines having an higher priority and keepout
for( int ii = 0; ii < GetBoard()->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* zone = GetBoard()->GetArea( ii );
if( zone->GetLayer() != GetLayer() )
continue;
if( !zone->GetIsKeepout() && zone->GetPriority() <= GetPriority() )
continue;
if( zone->GetIsKeepout() && ! zone->GetDoNotAllowCopperPour() )
continue;
// A highter priority zone or keepout area is found: remove this area
item_boundingbox = zone->GetBoundingBox();
if( !item_boundingbox.Intersects( zone_boundingbox ) )
continue;
// Add the zone outline area.
// However if the zone has the same net as the current zone,
// do not add any clearance.
// the zone will be connected to the current zone, but filled areas
// will use different parameters (clearance, thermal shapes )
bool same_net = GetNetCode() == zone->GetNetCode();
bool use_net_clearance = true;
int min_clearance = zone_clearance;
// Do not forget to make room to draw the thick outlines
// of the hole created by the area of the zone to remove
int holeclearance = zone->GetClearance() + outline_half_thickness;
// The final clearance is obviously the max value of each zone clearance
min_clearance = std::max( min_clearance, holeclearance );
if( zone->GetIsKeepout() || same_net )
{
// Just take in account the fact the outline has a thickness, so
// the actual area to substract is inflated to take in account this fact
min_clearance = outline_half_thickness;
use_net_clearance = false;
}
zone->TransformOutlinesShapeWithClearanceToPolygon(
aFeatures,
min_clearance, use_net_clearance );
}
// Remove thermal symbols
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->Pads(); pad != NULL; pad = pad->Next() )
{
// Rejects non-standard pads with tht-only thermal reliefs
if( GetPadConnection( pad ) == PAD_ZONE_CONN_THT_THERMAL
&& pad->GetAttribute() != PAD_ATTRIB_STANDARD )
continue;
if( GetPadConnection( pad ) != PAD_ZONE_CONN_THERMAL
&& GetPadConnection( pad ) != PAD_ZONE_CONN_THT_THERMAL )
continue;
if( !pad->IsOnLayer( GetLayer() ) )
continue;
if( pad->GetNetCode() != GetNetCode() )
continue;
item_boundingbox = pad->GetBoundingBox();
int thermalGap = GetThermalReliefGap( pad );
item_boundingbox.Inflate( thermalGap, thermalGap );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
CreateThermalReliefPadPolygon( aFeatures,
*pad, thermalGap,
GetThermalReliefCopperBridge( pad ),
m_ZoneMinThickness,
segsPerCircle,
correctionFactor, s_thermalRot );
}
}
}
}
/*
* Note 1: polygons are drawm using outlines witk a thickness = aMinThicknessValue
* so shapes must take in account this outline thickness
*
* Note 2:
* Trapezoidal pads are not considered here because they are very special case
* and are used in microwave applications and they *DO NOT* have a thermal relief that
* change the shape by creating stubs and destroy their properties.
*/
void CreateThermalReliefPadPolygon( SHAPE_POLY_SET& aCornerBuffer,
const D_PAD& aPad,
int aThermalGap,
int aCopperThickness,
int aMinThicknessValue,
int aError,
double aThermalRot )
{
wxPoint corner, corner_end;
wxSize copper_thickness;
wxPoint padShapePos = aPad.ShapePos(); // Note: for pad having a shape offset,
// the pad position is NOT the shape position
/* Keep in account the polygon outline thickness
* aThermalGap must be increased by aMinThicknessValue/2 because drawing external outline
* with a thickness of aMinThicknessValue will reduce gap by aMinThicknessValue/2
*/
aThermalGap += aMinThicknessValue / 2;
/* Keep in account the polygon outline thickness
* copper_thickness must be decreased by aMinThicknessValue because drawing outlines
* with a thickness of aMinThicknessValue will increase real thickness by aMinThicknessValue
*/
int dx = aPad.GetSize().x / 2;
int dy = aPad.GetSize().y / 2;
copper_thickness.x = std::min( aPad.GetSize().x, aCopperThickness ) - aMinThicknessValue;
copper_thickness.y = std::min( aPad.GetSize().y, aCopperThickness ) - aMinThicknessValue;
if( copper_thickness.x < 0 )
copper_thickness.x = 0;
if( copper_thickness.y < 0 )
copper_thickness.y = 0;
switch( aPad.GetShape() )
{
case PAD_SHAPE_CIRCLE: // Add 4 similar holes
{
/* we create 4 copper holes and put them in position 1, 2, 3 and 4
* here is the area of the rectangular pad + its thermal gap
* the 4 copper holes remove the copper in order to create the thermal gap
* 4 ------ 1
* | |
* | |
* | |
* | |
* 3 ------ 2
* holes 2, 3, 4 are the same as hole 1, rotated 90, 180, 270 deg
*/
// Build the hole pattern, for the hole in the X >0, Y > 0 plane:
// The pattern roughtly is a 90 deg arc pie
std::vector <wxPoint> corners_buffer;
int numSegs = std::max( GetArcToSegmentCount( dx + aThermalGap, aError, 360.0 ), 6 );
double correction = GetCircletoPolyCorrectionFactor( numSegs );
double delta = 3600.0 / numSegs;
// Radius of outer arcs of the shape corrected for arc approximation by lines
int outer_radius = KiROUND( ( dx + aThermalGap ) * correction );
// Crosspoint of thermal spoke sides, the first point of polygon buffer
corners_buffer.push_back( wxPoint( copper_thickness.x / 2, copper_thickness.y / 2 ) );
// Add an intermediate point on spoke sides, to allow a > 90 deg angle between side
// and first seg of arc approx
corner.x = copper_thickness.x / 2;
int y = outer_radius - (aThermalGap / 4);
corner.y = KiROUND( sqrt( ( (double) y * y - (double) corner.x * corner.x ) ) );
if( aThermalRot != 0 )
corners_buffer.push_back( corner );
// calculate the starting point of the outter arc
corner.x = copper_thickness.x / 2;
corner.y = KiROUND( sqrt( ( (double) outer_radius * outer_radius ) -
( (double) corner.x * corner.x ) ) );
RotatePoint( &corner, 90 ); // 9 degrees is the spoke fillet size
// calculate the ending point of the outer arc
corner_end.x = corner.y;
corner_end.y = corner.x;
// calculate intermediate points (y coordinate from corner.y to corner_end.y
while( (corner.y > corner_end.y) && (corner.x < corner_end.x) )
{
corners_buffer.push_back( corner );
RotatePoint( &corner, delta );
}
corners_buffer.push_back( corner_end );
/* add an intermediate point, to avoid angles < 90 deg between last arc approx line
* and radius line
*/
corner.x = corners_buffer[1].y;
corner.y = corners_buffer[1].x;
corners_buffer.push_back( corner );
// Now, add the 4 holes ( each is the pattern, rotated by 0, 90, 180 and 270 deg
// aThermalRot = 450 (45.0 degrees orientation) work fine.
double angle_pad = aPad.GetOrientation(); // Pad orientation
double th_angle = aThermalRot;
for( unsigned ihole = 0; ihole < 4; ihole++ )
{
aCornerBuffer.NewOutline();
for( unsigned ii = 0; ii < corners_buffer.size(); ii++ )
{
corner = corners_buffer[ii];
RotatePoint( &corner, th_angle + angle_pad ); // Rotate by segment angle and pad orientation
corner += padShapePos;
aCornerBuffer.Append( corner.x, corner.y );
}
th_angle += 900; // Note: th_angle in in 0.1 deg.
}
}
break;
case PAD_SHAPE_OVAL:
{
// Oval pad support along the lines of round and rectangular pads
std::vector <wxPoint> corners_buffer; // Polygon buffer as vector
dx = (aPad.GetSize().x / 2) + aThermalGap; // Cutout radius x
dy = (aPad.GetSize().y / 2) + aThermalGap; // Cutout radius y
wxPoint shape_offset;
// We want to calculate an oval shape with dx > dy.
// if this is not the case, exchange dx and dy, and rotate the shape 90 deg.
int supp_angle = 0;
if( dx < dy )
{
std::swap( dx, dy );
supp_angle = 900;
std::swap( copper_thickness.x, copper_thickness.y );
}
int deltasize = dx - dy; // = distance between shape position and the 2 demi-circle ends centre
// here we have dx > dy
// Radius of outer arcs of the shape:
int outer_radius = dy; // The radius of the outer arc is radius end + aThermalGap
int numSegs = std::max( GetArcToSegmentCount( outer_radius, aError, 360.0 ), 6 );
double delta = 3600.0 / numSegs;
// Some coordinate fiddling, depending on the shape offset direction
shape_offset = wxPoint( deltasize, 0 );
// Crosspoint of thermal spoke sides, the first point of polygon buffer
corner.x = copper_thickness.x / 2;
corner.y = copper_thickness.y / 2;
corners_buffer.push_back( corner );
// Arc start point calculation, the intersecting point of cutout arc and thermal spoke edge
// If copper thickness is more than shape offset, we need to calculate arc intercept point.
if( copper_thickness.x > deltasize )
{
corner.x = copper_thickness.x / 2;
corner.y = KiROUND( sqrt( ( (double) outer_radius * outer_radius ) -
( (double) ( corner.x - delta ) * ( corner.x - deltasize ) ) ) );
corner.x -= deltasize;
/* creates an intermediate point, to have a > 90 deg angle
* between the side and the first segment of arc approximation
*/
wxPoint intpoint = corner;
intpoint.y -= aThermalGap / 4;
corners_buffer.push_back( intpoint + shape_offset );
RotatePoint( &corner, 90 ); // 9 degrees of thermal fillet
}
else
{
corner.x = copper_thickness.x / 2;
corner.y = outer_radius;
corners_buffer.push_back( corner );
}
// Add an intermediate point on spoke sides, to allow a > 90 deg angle between side
// and first seg of arc approx
wxPoint last_corner;
last_corner.y = copper_thickness.y / 2;
int px = outer_radius - (aThermalGap / 4);
last_corner.x =
KiROUND( sqrt( ( ( (double) px * px ) - (double) last_corner.y * last_corner.y ) ) );
// Arc stop point calculation, the intersecting point of cutout arc and thermal spoke edge
corner_end.y = copper_thickness.y / 2;
corner_end.x =
KiROUND( sqrt( ( (double) outer_radius *
outer_radius ) - ( (double) corner_end.y * corner_end.y ) ) );
RotatePoint( &corner_end, -90 ); // 9 degrees of thermal fillet
// calculate intermediate arc points till limit is reached
while( (corner.y > corner_end.y) && (corner.x < corner_end.x) )
{
corners_buffer.push_back( corner + shape_offset );
RotatePoint( &corner, delta );
}
//corners_buffer.push_back(corner + shape_offset); // TODO: about one mil geometry error forms somewhere.
corners_buffer.push_back( corner_end + shape_offset );
corners_buffer.push_back( last_corner + shape_offset ); // Enabling the line above shows intersection point.
/* Create 2 holes, rotated by pad rotation.
*/
double angle = aPad.GetOrientation() + supp_angle;
for( int irect = 0; irect < 2; irect++ )
{
aCornerBuffer.NewOutline();
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += padShapePos;
aCornerBuffer.Append( cpos.x, cpos.y );
}
angle = AddAngles( angle, 1800 ); // this is calculate hole 3
}
// Create holes, that are the mirrored from the previous holes
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint swap = corners_buffer[ic];
swap.x = -swap.x;
corners_buffer[ic] = swap;
}
// Now add corner 4 and 2 (2 is the corner 4 rotated by 180 deg
angle = aPad.GetOrientation() + supp_angle;
for( int irect = 0; irect < 2; irect++ )
{
aCornerBuffer.NewOutline();
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += padShapePos;
aCornerBuffer.Append( cpos.x, cpos.y );
}
angle = AddAngles( angle, 1800 );
}
}
break;
case PAD_SHAPE_CHAMFERED_RECT:
case PAD_SHAPE_ROUNDRECT: // thermal shape is the same for rectangular shapes.
case PAD_SHAPE_RECT:
{
/* we create 4 copper holes and put them in position 1, 2, 3 and 4
* here is the area of the rectangular pad + its thermal gap
* the 4 copper holes remove the copper in order to create the thermal gap
* 1 ------ 4
* | |
* | |
* | |
* | |
* 2 ------ 3
* hole 3 is the same as hole 1, rotated 180 deg
* hole 4 is the same as hole 2, rotated 180 deg and is the same as hole 1, mirrored
*/
// First, create a rectangular hole for position 1 :
// 2 ------- 3
// | |
// | |
// | |
// 1 -------4
// Modified rectangles with one corner rounded. TODO: merging with oval thermals
// and possibly round too.
std::vector <wxPoint> corners_buffer; // Polygon buffer as vector
dx = (aPad.GetSize().x / 2) + aThermalGap; // Cutout radius x
dy = (aPad.GetSize().y / 2) + aThermalGap; // Cutout radius y
// calculation is optimized for pad shape with dy >= dx (vertical rectangle).
// if it is not the case, just rotate this shape 90 degrees:
double angle = aPad.GetOrientation();
wxPoint corner_origin_pos( -aPad.GetSize().x / 2, -aPad.GetSize().y / 2 );
if( dy < dx )
{
std::swap( dx, dy );
std::swap( copper_thickness.x, copper_thickness.y );
std::swap( corner_origin_pos.x, corner_origin_pos.y );
angle += 900.0;
}
// Now calculate the hole pattern in position 1 ( top left pad corner )
// The first point of polygon buffer is left lower corner, second the crosspoint of
// thermal spoke sides, the third is upper right corner and the rest are rounding
// vertices going anticlockwise. Note the inverted Y-axis in corners_buffer y coordinates.
wxPoint arc_end_point( -dx, -(aThermalGap / 4 + copper_thickness.y / 2) );
corners_buffer.push_back( arc_end_point ); // Adds small miters to zone
corners_buffer.push_back( wxPoint( -(dx - aThermalGap / 4), -copper_thickness.y / 2 ) ); // fill and spoke corner
corners_buffer.push_back( wxPoint( -copper_thickness.x / 2, -copper_thickness.y / 2 ) );
corners_buffer.push_back( wxPoint( -copper_thickness.x / 2, -(dy - aThermalGap / 4) ) );
// The first point to build the rounded corner:
wxPoint arc_start_point( -(aThermalGap / 4 + copper_thickness.x / 2) , -dy );
corners_buffer.push_back( arc_start_point );
int numSegs = std::max( GetArcToSegmentCount( aThermalGap, aError, 360.0 ), 6 );
double correction = GetCircletoPolyCorrectionFactor( numSegs );
int rounding_radius = KiROUND( aThermalGap * correction ); // Corner rounding radius
// Calculate arc angle parameters.
// the start angle id near 900 decidegrees, the final angle is near 1800.0 decidegrees.
double arc_increment = 3600.0 / numSegs;
// the arc_angle_start is 900.0 or slighly more, depending on the actual arc starting point
double arc_angle_start = atan2( -arc_start_point.y -corner_origin_pos.y, arc_start_point.x - corner_origin_pos.x ) * 1800/M_PI;
if( arc_angle_start < 900.0 )
arc_angle_start = 900.0;
bool first_point = true;
for( double curr_angle = arc_angle_start; ; curr_angle += arc_increment )
{
wxPoint corner_position = wxPoint( rounding_radius, 0 );
RotatePoint( &corner_position, curr_angle ); // Rounding vector rotation
corner_position += corner_origin_pos; // Rounding vector + Pad corner offset
// The arc angle is <= 90 degrees, therefore the arc is finished if the x coordinate
// decrease or the y coordinate is smaller than the y end point
if( !first_point &&
( corner_position.x >= corners_buffer.back().x || corner_position.y > arc_end_point.y ) )
break;
first_point = false;
// Note: for hole in position 1, arc x coordinate is always < x starting point
// and arc y coordinate is always <= y ending point
if( corner_position != corners_buffer.back() // avoid duplicate corners.
&& corner_position.x <= arc_start_point.x ) // skip current point at the right of the starting point
corners_buffer.push_back( corner_position );
}
for( int irect = 0; irect < 2; irect++ )
{
aCornerBuffer.NewOutline();
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle ); // Rotate according to module orientation
cpos += padShapePos; // Shift origin to position
aCornerBuffer.Append( cpos.x, cpos.y );
}
angle = AddAngles( angle, 1800 ); // this is calculate hole 3
}
// Create holes, that are the mirrored from the previous holes
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint swap = corners_buffer[ic];
swap.x = -swap.x;
corners_buffer[ic] = swap;
}
// Now add corner 4 and 2 (2 is the corner 4 rotated by 180 deg
for( int irect = 0; irect < 2; irect++ )
{
aCornerBuffer.NewOutline();
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += padShapePos;
aCornerBuffer.Append( cpos.x, cpos.y );
}
angle = AddAngles( angle, 1800 );
}
}
break;
case PAD_SHAPE_TRAPEZOID:
{
SHAPE_POLY_SET antipad; // The full antipad area
// We need a length to build the stubs of the thermal reliefs
// the value is not very important. The pad bounding box gives a reasonable value
EDA_RECT bbox = aPad.GetBoundingBox();
int stub_len = std::max( bbox.GetWidth(), bbox.GetHeight() );
aPad.TransformShapeWithClearanceToPolygon( antipad, aThermalGap );
SHAPE_POLY_SET stub; // A basic stub ( a rectangle)
SHAPE_POLY_SET stubs; // the full stubs shape
// We now substract the stubs (connections to the copper zone)
//ClipperLib::Clipper clip_engine;
// Prepare a clipping transform
//clip_engine.AddPath( antipad, ClipperLib::ptSubject, true );
// Create stubs and add them to clipper engine
wxPoint stubBuffer[4];
stubBuffer[0].x = stub_len;
stubBuffer[0].y = copper_thickness.y/2;
stubBuffer[1] = stubBuffer[0];
stubBuffer[1].y = -copper_thickness.y/2;
stubBuffer[2] = stubBuffer[1];
stubBuffer[2].x = -stub_len;
stubBuffer[3] = stubBuffer[2];
stubBuffer[3].y = copper_thickness.y/2;
stub.NewOutline();
for( unsigned ii = 0; ii < arrayDim( stubBuffer ); ii++ )
{
wxPoint cpos = stubBuffer[ii];
RotatePoint( &cpos, aPad.GetOrientation() );
cpos += padShapePos;
stub.Append( cpos.x, cpos.y );
}
stubs.Append( stub );
stubBuffer[0].y = stub_len;
stubBuffer[0].x = copper_thickness.x/2;
stubBuffer[1] = stubBuffer[0];
stubBuffer[1].x = -copper_thickness.x/2;
stubBuffer[2] = stubBuffer[1];
stubBuffer[2].y = -stub_len;
stubBuffer[3] = stubBuffer[2];
stubBuffer[3].x = copper_thickness.x/2;
stub.RemoveAllContours();
stub.NewOutline();
for( unsigned ii = 0; ii < arrayDim( stubBuffer ); ii++ )
{
wxPoint cpos = stubBuffer[ii];
RotatePoint( &cpos, aPad.GetOrientation() );
cpos += padShapePos;
stub.Append( cpos.x, cpos.y );
}
stubs.Append( stub );
stubs.Simplify( SHAPE_POLY_SET::PM_FAST );
antipad.BooleanSubtract( stubs, SHAPE_POLY_SET::PM_FAST );
aCornerBuffer.Append( antipad );
break;
}
default:
;
}
}
void ZONE_FILLER::buildZoneFeatureHoleList( const ZONE_CONTAINER* aZone,
SHAPE_POLY_SET& aFeatures ) const
{
int segsPerCircle;
double correctionFactor;
// Set the number of segments in arc approximations
if( aZone->GetArcSegmentCount() == 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 );
aFeatures.RemoveAllContours();
int outline_half_thickness = aZone->GetMinThickness() / 2;
// When removing holes, the holes must be expanded by outline_half_thickness
// to take in account the thickness of the zone outlines
int zone_clearance = aZone->GetClearance() + outline_half_thickness;
// When holes are created by non copper items (edge cut items), use only
// the m_ZoneClearance parameter (zone clearance with no netclass clearance)
int zone_to_edgecut_clearance = aZone->GetZoneClearance() + outline_half_thickness;
/* store holes (i.e. tracks and pads areas as polygons outlines)
* in a polygon list
*/
/* items ouside the zone bounding box are skipped
* the bounding box is the zone bounding box + the biggest clearance found in Netclass list
*/
EDA_RECT item_boundingbox;
EDA_RECT zone_boundingbox = aZone->GetBoundingBox();
int biggest_clearance = m_board->GetDesignSettings().GetBiggestClearanceValue();
biggest_clearance = std::max( biggest_clearance, zone_clearance );
zone_boundingbox.Inflate( biggest_clearance );
/*
* First : Add pads. Note: pads having the same net as zone are left in zone.
* Thermal shapes will be created later if necessary
*/
/* Use a dummy pad to calculate hole clearance when a pad is not on all copper layers
* and this pad has a hole
* This dummy pad has the size and shape of the hole
* Therefore, this dummy pad is a circle or an oval.
* A pad must have a parent because some functions expect a non null parent
* to find the parent board, and some other data
*/
MODULE dummymodule( m_board ); // Creates a dummy parent
D_PAD dummypad( &dummymodule );
for( MODULE* module = m_board->m_Modules; module; module = module->Next() )
{
D_PAD* nextpad;
for( D_PAD* pad = module->PadsList(); pad != NULL; pad = nextpad )
{
nextpad = pad->Next(); // pad pointer can be modified by next code, so
// calculate the next pad here
if( !pad->IsOnLayer( aZone->GetLayer() ) )
{
/* Test for pads that are on top or bottom only and have a hole.
* There are curious pads but they can be used for some components that are
* inside the board (in fact inside the hole. Some photo diodes and Leds are
* like this)
*/
if( pad->GetDrillSize().x == 0 && pad->GetDrillSize().y == 0 )
continue;
// Use a dummy pad to calculate a hole shape that have the same dimension as
// the pad hole
dummypad.SetSize( pad->GetDrillSize() );
dummypad.SetOrientation( pad->GetOrientation() );
dummypad.SetShape( pad->GetDrillShape() == PAD_DRILL_SHAPE_OBLONG ?
PAD_SHAPE_OVAL : PAD_SHAPE_CIRCLE );
dummypad.SetPosition( pad->GetPosition() );
pad = &dummypad;
}
// Note: netcode <=0 means not connected item
if( ( pad->GetNetCode() != aZone->GetNetCode() ) || ( pad->GetNetCode() <= 0 ) )
{
int item_clearance = pad->GetClearance() + outline_half_thickness;
item_boundingbox = pad->GetBoundingBox();
item_boundingbox.Inflate( item_clearance );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
int clearance = std::max( zone_clearance, item_clearance );
// PAD_SHAPE_CUSTOM can have a specific keepout, to avoid to break the shape
if( pad->GetShape() == PAD_SHAPE_CUSTOM
&& pad->GetCustomShapeInZoneOpt() == CUST_PAD_SHAPE_IN_ZONE_CONVEXHULL )
{
// the pad shape in zone can be its convex hull or
// the shape itself
SHAPE_POLY_SET outline( pad->GetCustomShapeAsPolygon() );
outline.Inflate( KiROUND( clearance * correctionFactor ), segsPerCircle );
pad->CustomShapeAsPolygonToBoardPosition( &outline,
pad->GetPosition(), pad->GetOrientation() );
if( pad->GetCustomShapeInZoneOpt() == CUST_PAD_SHAPE_IN_ZONE_CONVEXHULL )
{
std::vector<wxPoint> convex_hull;
BuildConvexHull( convex_hull, outline );
aFeatures.NewOutline();
for( unsigned ii = 0; ii < convex_hull.size(); ++ii )
aFeatures.Append( convex_hull[ii] );
}
else
aFeatures.Append( outline );
}
else
pad->TransformShapeWithClearanceToPolygon( aFeatures,
clearance,
segsPerCircle,
correctionFactor );
}
continue;
}
// Pads are removed from zone if the setup is PAD_ZONE_CONN_NONE
// or if they have a custom shape, because a thermal relief will break
// the shape
if( aZone->GetPadConnection( pad ) == PAD_ZONE_CONN_NONE
|| pad->GetShape() == PAD_SHAPE_CUSTOM )
{
int gap = zone_clearance;
int thermalGap = aZone->GetThermalReliefGap( pad );
gap = std::max( gap, thermalGap );
item_boundingbox = pad->GetBoundingBox();
item_boundingbox.Inflate( gap );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
// PAD_SHAPE_CUSTOM has a specific keepout, to avoid to break the shape
// the pad shape in zone can be its convex hull or the shape itself
if( pad->GetShape() == PAD_SHAPE_CUSTOM
&& pad->GetCustomShapeInZoneOpt() == CUST_PAD_SHAPE_IN_ZONE_CONVEXHULL )
{
// the pad shape in zone can be its convex hull or
// the shape itself
SHAPE_POLY_SET outline( pad->GetCustomShapeAsPolygon() );
outline.Inflate( KiROUND( gap * correctionFactor ), segsPerCircle );
pad->CustomShapeAsPolygonToBoardPosition( &outline,
pad->GetPosition(), pad->GetOrientation() );
std::vector<wxPoint> convex_hull;
BuildConvexHull( convex_hull, outline );
aFeatures.NewOutline();
for( unsigned ii = 0; ii < convex_hull.size(); ++ii )
aFeatures.Append( convex_hull[ii] );
}
else
pad->TransformShapeWithClearanceToPolygon( aFeatures,
gap, segsPerCircle, correctionFactor );
}
}
}
}
/* Add holes (i.e. tracks and vias areas as polygons outlines)
* in cornerBufferPolysToSubstract
*/
for( auto track : m_board->Tracks() )
{
if( !track->IsOnLayer( aZone->GetLayer() ) )
continue;
if( track->GetNetCode() == aZone->GetNetCode() && ( aZone->GetNetCode() != 0) )
continue;
int item_clearance = track->GetClearance() + outline_half_thickness;
item_boundingbox = track->GetBoundingBox();
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
int clearance = std::max( zone_clearance, item_clearance );
track->TransformShapeWithClearanceToPolygon( aFeatures,
clearance,
segsPerCircle,
correctionFactor );
}
}
/* Add module edge items that are on copper layers
* Pcbnew allows these items to be on copper layers in microwave applictions
* This is a bad thing, but must be handled here, until a better way is found
*/
for( auto module : m_board->Modules() )
{
for( auto item : module->GraphicalItems() )
{
if( !item->IsOnLayer( aZone->GetLayer() ) && !item->IsOnLayer( Edge_Cuts ) )
continue;
if( item->Type() != PCB_MODULE_EDGE_T )
continue;
item_boundingbox = item->GetBoundingBox();
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
int zclearance = zone_clearance;
if( item->IsOnLayer( Edge_Cuts ) )
// use only the m_ZoneClearance, not the clearance using
// the netclass value, because we do not have a copper item
zclearance = zone_to_edgecut_clearance;
( (EDGE_MODULE*) item )->TransformShapeWithClearanceToPolygon(
aFeatures, zclearance, segsPerCircle, correctionFactor );
}
}
}
// Add graphic items (copper texts) and board edges
// Currently copper texts have no net, so only the zone_clearance
// is used.
for( auto item : m_board->Drawings() )
{
if( item->GetLayer() != aZone->GetLayer() && item->GetLayer() != Edge_Cuts )
continue;
int zclearance = zone_clearance;
if( item->GetLayer() == Edge_Cuts )
// use only the m_ZoneClearance, not the clearance using
// the netclass value, because we do not have a copper item
zclearance = zone_to_edgecut_clearance;
switch( item->Type() )
{
case PCB_LINE_T:
( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon(
aFeatures,
zclearance, segsPerCircle, correctionFactor );
break;
case PCB_TEXT_T:
( (TEXTE_PCB*) item )->TransformBoundingBoxWithClearanceToPolygon(
aFeatures, zclearance );
break;
default:
break;
}
}
// Add zones outlines having an higher priority and keepout
for( int ii = 0; ii < m_board->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* zone = m_board->GetArea( ii );
// If the zones share no common layers
if( !aZone->CommonLayerExists( zone->GetLayerSet() ) )
continue;
if( !zone->GetIsKeepout() && zone->GetPriority() <= aZone->GetPriority() )
continue;
if( zone->GetIsKeepout() && !zone->GetDoNotAllowCopperPour() )
continue;
// A highter priority zone or keepout area is found: remove this area
item_boundingbox = zone->GetBoundingBox();
if( !item_boundingbox.Intersects( zone_boundingbox ) )
continue;
// Add the zone outline area.
// However if the zone has the same net as the current zone,
// do not add any clearance.
// the zone will be connected to the current zone, but filled areas
// will use different parameters (clearance, thermal shapes )
bool same_net = aZone->GetNetCode() == zone->GetNetCode();
bool use_net_clearance = true;
int min_clearance = zone_clearance;
// Do not forget to make room to draw the thick outlines
// of the hole created by the area of the zone to remove
int holeclearance = zone->GetClearance() + outline_half_thickness;
// The final clearance is obviously the max value of each zone clearance
min_clearance = std::max( min_clearance, holeclearance );
if( zone->GetIsKeepout() || same_net )
{
// Just take in account the fact the outline has a thickness, so
// the actual area to substract is inflated to take in account this fact
min_clearance = outline_half_thickness;
use_net_clearance = false;
}
zone->TransformOutlinesShapeWithClearanceToPolygon(
aFeatures, min_clearance, use_net_clearance );
}
// Remove thermal symbols
for( auto module : m_board->Modules() )
{
for( auto pad : module->Pads() )
{
// Rejects non-standard pads with tht-only thermal reliefs
if( aZone->GetPadConnection( pad ) == PAD_ZONE_CONN_THT_THERMAL
&& pad->GetAttribute() != PAD_ATTRIB_STANDARD )
continue;
if( aZone->GetPadConnection( pad ) != PAD_ZONE_CONN_THERMAL
&& aZone->GetPadConnection( pad ) != PAD_ZONE_CONN_THT_THERMAL )
continue;
if( !pad->IsOnLayer( aZone->GetLayer() ) )
continue;
if( pad->GetNetCode() != aZone->GetNetCode() )
continue;
item_boundingbox = pad->GetBoundingBox();
int thermalGap = aZone->GetThermalReliefGap( pad );
item_boundingbox.Inflate( thermalGap, thermalGap );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
CreateThermalReliefPadPolygon( aFeatures,
*pad, thermalGap,
aZone->GetThermalReliefCopperBridge( pad ),
aZone->GetMinThickness(),
segsPerCircle,
correctionFactor, s_thermalRot );
}
}
}
}
void BuildUnconnectedThermalStubsPolygonList( CPOLYGONS_LIST& aCornerBuffer,
BOARD* aPcb,
ZONE_CONTAINER* aZone,
double aArcCorrection,
double aRoundPadThermalRotation )
{
std::vector<wxPoint> corners_buffer; // a local polygon buffer to store one stub
corners_buffer.reserve( 4 );
wxPoint ptTest[4];
int zone_clearance = aZone->GetZoneClearance();
EDA_RECT item_boundingbox;
EDA_RECT zone_boundingbox = aZone->GetBoundingBox();
int biggest_clearance = aPcb->GetDesignSettings().GetBiggestClearanceValue();
biggest_clearance = std::max( biggest_clearance, zone_clearance );
zone_boundingbox.Inflate( biggest_clearance );
// half size of the pen used to draw/plot zones outlines
int pen_radius = aZone->GetMinThickness() / 2;
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->Pads(); pad != NULL; pad = pad->Next() )
{
// Rejects non-standard pads with tht-only thermal reliefs
if( aZone->GetPadConnection( pad ) == THT_THERMAL
&& pad->GetAttribute() != PAD_STANDARD )
continue;
if( aZone->GetPadConnection( pad ) != THERMAL_PAD
&& aZone->GetPadConnection( pad ) != THT_THERMAL )
continue;
// check
if( !pad->IsOnLayer( aZone->GetLayer() ) )
continue;
if( pad->GetNetCode() != aZone->GetNetCode() )
continue;
// Calculate thermal bridge half width
int thermalBridgeWidth = aZone->GetThermalReliefCopperBridge( pad )
- aZone->GetMinThickness();
if( thermalBridgeWidth <= 0 )
continue;
// we need the thermal bridge half width
// with a small extra size to be sure we create a stub
// slightly larger than the actual stub
thermalBridgeWidth = ( thermalBridgeWidth + 4 ) / 2;
int thermalReliefGap = aZone->GetThermalReliefGap( pad );
item_boundingbox = pad->GetBoundingBox();
item_boundingbox.Inflate( thermalReliefGap );
if( !( item_boundingbox.Intersects( zone_boundingbox ) ) )
continue;
// Thermal bridges are like a segment from a starting point inside the pad
// to an ending point outside the pad
// calculate the ending point of the thermal pad, outside the pad
wxPoint endpoint;
endpoint.x = ( pad->GetSize().x / 2 ) + thermalReliefGap;
endpoint.y = ( pad->GetSize().y / 2 ) + thermalReliefGap;
// Calculate the starting point of the thermal stub
// inside the pad
wxPoint startpoint;
int copperThickness = aZone->GetThermalReliefCopperBridge( pad )
- aZone->GetMinThickness();
if( copperThickness < 0 )
copperThickness = 0;
// Leave a small extra size to the copper area inside to pad
copperThickness += KiROUND( IU_PER_MM * 0.04 );
startpoint.x = std::min( pad->GetSize().x, copperThickness );
startpoint.y = std::min( pad->GetSize().y, copperThickness );
startpoint.x /= 2;
startpoint.y /= 2;
// This is a CIRCLE pad tweak
// for circle pads, the thermal stubs orientation is 45 deg
double fAngle = pad->GetOrientation();
if( pad->GetShape() == PAD_CIRCLE )
{
endpoint.x = KiROUND( endpoint.x * aArcCorrection );
endpoint.y = endpoint.x;
fAngle = aRoundPadThermalRotation;
}
// contour line width has to be taken into calculation to avoid "thermal stub bleed"
endpoint.x += pen_radius;
endpoint.y += pen_radius;
// compute north, south, west and east points for zone connection.
ptTest[0] = wxPoint( 0, endpoint.y ); // lower point
ptTest[1] = wxPoint( 0, -endpoint.y ); // upper point
ptTest[2] = wxPoint( endpoint.x, 0 ); // right point
ptTest[3] = wxPoint( -endpoint.x, 0 ); // left point
// Test all sides
for( int i = 0; i < 4; i++ )
{
// rotate point
RotatePoint( &ptTest[i], fAngle );
// translate point
ptTest[i] += pad->ShapePos();
if( aZone->HitTestFilledArea( ptTest[i] ) )
continue;
corners_buffer.clear();
// polygons are rectangles with width of copper bridge value
switch( i )
{
case 0: // lower stub
corners_buffer.push_back( wxPoint( -thermalBridgeWidth, endpoint.y ) );
corners_buffer.push_back( wxPoint( +thermalBridgeWidth, endpoint.y ) );
corners_buffer.push_back( wxPoint( +thermalBridgeWidth, startpoint.y ) );
corners_buffer.push_back( wxPoint( -thermalBridgeWidth, startpoint.y ) );
break;
case 1: // upper stub
corners_buffer.push_back( wxPoint( -thermalBridgeWidth, -endpoint.y ) );
corners_buffer.push_back( wxPoint( +thermalBridgeWidth, -endpoint.y ) );
corners_buffer.push_back( wxPoint( +thermalBridgeWidth, -startpoint.y ) );
corners_buffer.push_back( wxPoint( -thermalBridgeWidth, -startpoint.y ) );
break;
case 2: // right stub
corners_buffer.push_back( wxPoint( endpoint.x, -thermalBridgeWidth ) );
corners_buffer.push_back( wxPoint( endpoint.x, thermalBridgeWidth ) );
corners_buffer.push_back( wxPoint( +startpoint.x, thermalBridgeWidth ) );
corners_buffer.push_back( wxPoint( +startpoint.x, -thermalBridgeWidth ) );
break;
case 3: // left stub
corners_buffer.push_back( wxPoint( -endpoint.x, -thermalBridgeWidth ) );
corners_buffer.push_back( wxPoint( -endpoint.x, thermalBridgeWidth ) );
corners_buffer.push_back( wxPoint( -startpoint.x, thermalBridgeWidth ) );
corners_buffer.push_back( wxPoint( -startpoint.x, -thermalBridgeWidth ) );
break;
}
// add computed polygon to list
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, fAngle ); // Rotate according to module orientation
cpos += pad->ShapePos(); // Shift origin to position
CPolyPt corner;
corner.x = cpos.x;
corner.y = cpos.y;
corner.end_contour = ( ic < (corners_buffer.size() - 1) ) ? false : true;
aCornerBuffer.Append( corner );
}
}
}
}
}
/**
* Function AddClearanceAreasPolygonsToPolysList
* Supports a min thickness area constraint.
* Add non copper areas polygons (pads and tracks with clearance)
* to the filled copper area found
* in BuildFilledPolysListData after calculating filled areas in a zone
* Non filled copper areas are pads and track and their clearance areas
* The filled copper area must be computed just before.
* BuildFilledPolysListData() call this function just after creating the
* filled copper area polygon (without clearance areas)
* to do that this function:
* 1 - Creates the main outline (zone outline) using a correction to shrink the resulting area
* with m_ZoneMinThickness/2 value.
* The result is areas with a margin of m_ZoneMinThickness/2
* When drawing outline with segments having a thickness of m_ZoneMinThickness, the
* outlines will match exactly the initial outlines
* 3 - Add all non filled areas (pads, tracks) in group B with a clearance of m_Clearance +
* m_ZoneMinThickness/2
* in a buffer
* - If Thermal shapes are wanted, add non filled area, in order to create these thermal shapes
* 4 - calculates the polygon A - B
* 5 - put resulting list of polygons (filled areas) in m_FilledPolysList
* This zone contains pads with the same net.
* 6 - Remove insulated copper islands
* 7 - If Thermal shapes are wanted, remove unconnected stubs in thermal shapes:
* creates a buffer of polygons corresponding to stubs to remove
* sub them to the filled areas.
* Remove new insulated copper islands
*/
void ZONE_CONTAINER::AddClearanceAreasPolygonsToPolysList( BOARD* aPcb )
{
// Set the number of segments in arc approximations
if( m_ArcToSegmentsCount == ARC_APPROX_SEGMENTS_COUNT_HIGHT_DEF )
s_CircleToSegmentsCount = ARC_APPROX_SEGMENTS_COUNT_HIGHT_DEF;
else
s_CircleToSegmentsCount = 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 )
*/
s_Correction = 1.0 / cos( M_PI / s_CircleToSegmentsCount );
// This KI_POLYGON_SET is the area(s) to fill, with m_ZoneMinThickness/2
KI_POLYGON_SET polyset_zone_solid_areas;
int margin = m_ZoneMinThickness / 2;
/* First, creates the main polygon (i.e. the filled area using only one outline)
* to reserve a m_ZoneMinThickness/2 margin around the outlines and holes
* this margin is the room to redraw outlines with segments having a width set to
* m_ZoneMinThickness
* so m_ZoneMinThickness is the min thickness of the filled zones areas
* the main polygon is stored in polyset_zone_solid_areas
*/
CopyPolygonsFromFilledPolysListToKiPolygonList( polyset_zone_solid_areas );
polyset_zone_solid_areas -= margin;
if( polyset_zone_solid_areas.size() == 0 )
return;
/* Calculates the clearance value that meet DRC requirements
* from m_ZoneClearance and clearance from the corresponding netclass
* We have a "local" clearance in zones because most of time
* clearance between a zone and others items is bigger than the netclass clearance
* this is more true for small clearance values
* Note also the "local" clearance is used for clearance between non copper items
* or items like texts on copper layers
*/
int zone_clearance = std::max( m_ZoneClearance, GetClearance() );
zone_clearance += margin;
/* store holes (i.e. tracks and pads areas as polygons outlines)
* in a polygon list
*/
/* items ouside the zone bounding box are skipped
* the bounding box is the zone bounding box + the biggest clearance found in Netclass list
*/
EDA_RECT item_boundingbox;
EDA_RECT zone_boundingbox = GetBoundingBox();
int biggest_clearance = aPcb->GetDesignSettings().GetBiggestClearanceValue();
biggest_clearance = std::max( biggest_clearance, zone_clearance );
zone_boundingbox.Inflate( biggest_clearance );
/*
* First : Add pads. Note: pads having the same net as zone are left in zone.
* Thermal shapes will be created later if necessary
*/
int item_clearance;
// static to avoid unnecessary memory allocation when filling many zones.
static CPOLYGONS_LIST cornerBufferPolysToSubstract;
cornerBufferPolysToSubstract.RemoveAllContours();
/* Use a dummy pad to calculate hole clerance when a pad is not on all copper layers
* and this pad has a hole
* This dummy pad has the size and shape of the hole
* Therefore, this dummy pad is a circle or an oval.
* A pad must have a parent because some functions expect a non null parent
* to find the parent board, and some other data
*/
MODULE dummymodule( aPcb ); // Creates a dummy parent
D_PAD dummypad( &dummymodule );
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
D_PAD* nextpad;
for( D_PAD* pad = module->Pads(); pad != NULL; pad = nextpad )
{
nextpad = pad->Next(); // pad pointer can be modified by next code, so
// calculate the next pad here
if( !pad->IsOnLayer( GetLayer() ) )
{
/* Test for pads that are on top or bottom only and have a hole.
* There are curious pads but they can be used for some components that are
* inside the board (in fact inside the hole. Some photo diodes and Leds are
* like this)
*/
if( pad->GetDrillSize().x == 0 && pad->GetDrillSize().y == 0 )
continue;
// Use a dummy pad to calculate a hole shape that have the same dimension as
// the pad hole
dummypad.SetSize( pad->GetDrillSize() );
dummypad.SetOrientation( pad->GetOrientation() );
dummypad.SetShape( pad->GetDrillShape() == PAD_DRILL_OBLONG ?
PAD_OVAL : PAD_CIRCLE );
dummypad.SetPosition( pad->GetPosition() );
pad = &dummypad;
}
// Note: netcode <=0 means not connected item
if( ( pad->GetNetCode() != GetNetCode() ) || ( pad->GetNetCode() <= 0 ) )
{
item_clearance = pad->GetClearance() + margin;
item_boundingbox = pad->GetBoundingBox();
item_boundingbox.Inflate( item_clearance );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
int clearance = std::max( zone_clearance, item_clearance );
pad->TransformShapeWithClearanceToPolygon( cornerBufferPolysToSubstract,
clearance,
s_CircleToSegmentsCount,
s_Correction );
}
continue;
}
if( ( GetPadConnection( pad ) == PAD_NOT_IN_ZONE )
|| ( pad->GetShape() == PAD_TRAPEZOID ) )
// PAD_TRAPEZOID shapes are not in zones because they are used in microwave apps
// and i think it is good that shapes are not changed by thermal pads or others
{
int gap = zone_clearance;
int thermalGap = GetThermalReliefGap( pad );
gap = std::max( gap, thermalGap );
item_boundingbox = pad->GetBoundingBox();
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
pad->TransformShapeWithClearanceToPolygon( cornerBufferPolysToSubstract,
gap,
s_CircleToSegmentsCount,
s_Correction );
}
}
}
}
/* Add holes (i.e. tracks and vias areas as polygons outlines)
* in cornerBufferPolysToSubstract
*/
for( TRACK* track = aPcb->m_Track; track; track = track->Next() )
{
if( !track->IsOnLayer( GetLayer() ) )
continue;
if( track->GetNetCode() == GetNetCode() && (GetNetCode() != 0) )
continue;
item_clearance = track->GetClearance() + margin;
item_boundingbox = track->GetBoundingBox();
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
int clearance = std::max( zone_clearance, item_clearance );
track->TransformShapeWithClearanceToPolygon( cornerBufferPolysToSubstract,
clearance,
s_CircleToSegmentsCount,
s_Correction );
}
}
/* Add module edge items that are on copper layers
* Pcbnew allows these items to be on copper layers in microwave applictions
* This is a bad thing, but must be handled here, until a better way is found
*/
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
for( BOARD_ITEM* item = module->GraphicalItems(); item; item = item->Next() )
{
if( !item->IsOnLayer( GetLayer() ) && !item->IsOnLayer( Edge_Cuts ) )
continue;
if( item->Type() != PCB_MODULE_EDGE_T )
continue;
item_boundingbox = item->GetBoundingBox();
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
( (EDGE_MODULE*) item )->TransformShapeWithClearanceToPolygon(
cornerBufferPolysToSubstract, zone_clearance,
s_CircleToSegmentsCount, s_Correction );
}
}
}
// Add graphic items (copper texts) and board edges
for( BOARD_ITEM* item = aPcb->m_Drawings; item; item = item->Next() )
{
if( item->GetLayer() != GetLayer() && item->GetLayer() != Edge_Cuts )
continue;
switch( item->Type() )
{
case PCB_LINE_T:
( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon(
cornerBufferPolysToSubstract,
zone_clearance, s_CircleToSegmentsCount, s_Correction );
break;
case PCB_TEXT_T:
( (TEXTE_PCB*) item )->TransformBoundingBoxWithClearanceToPolygon(
cornerBufferPolysToSubstract, zone_clearance );
break;
default:
break;
}
}
// Add zones outlines having an higher priority and keepout
for( int ii = 0; ii < GetBoard()->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* zone = GetBoard()->GetArea( ii );
if( zone->GetLayer() != GetLayer() )
continue;
if( !zone->GetIsKeepout() && zone->GetPriority() <= GetPriority() )
continue;
if( zone->GetIsKeepout() && ! zone->GetDoNotAllowCopperPour() )
continue;
// A highter priority zone or keepout area is found: remove its area
item_boundingbox = zone->GetBoundingBox();
if( !item_boundingbox.Intersects( zone_boundingbox ) )
continue;
// Add the zone outline area.
// However if the zone has the same net as the current zone,
// do not add clearance.
// the zone will be connected to the current zone, but filled areas
// will use different parameters (clearance, thermal shapes )
bool addclearance = GetNetCode() != zone->GetNetCode();
int clearance = zone_clearance;
if( zone->GetIsKeepout() )
{
addclearance = true;
clearance = m_ZoneMinThickness / 2;
}
zone->TransformOutlinesShapeWithClearanceToPolygon(
cornerBufferPolysToSubstract,
clearance, addclearance );
}
// Remove thermal symbols
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->Pads(); pad != NULL; pad = pad->Next() )
{
// Rejects non-standard pads with tht-only thermal reliefs
if( GetPadConnection( pad ) == THT_THERMAL
&& pad->GetAttribute() != PAD_STANDARD )
continue;
if( GetPadConnection( pad ) != THERMAL_PAD
&& GetPadConnection( pad ) != THT_THERMAL )
continue;
if( !pad->IsOnLayer( GetLayer() ) )
continue;
if( pad->GetNetCode() != GetNetCode() )
continue;
item_boundingbox = pad->GetBoundingBox();
int thermalGap = GetThermalReliefGap( pad );
item_boundingbox.Inflate( thermalGap, thermalGap );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
CreateThermalReliefPadPolygon( cornerBufferPolysToSubstract,
*pad, thermalGap,
GetThermalReliefCopperBridge( pad ),
m_ZoneMinThickness,
s_CircleToSegmentsCount,
s_Correction, s_thermalRot );
}
}
}
// cornerBufferPolysToSubstract contains polygons to substract.
// polyset_zone_solid_areas contains the main filled area
// Calculate now actual solid areas
if( cornerBufferPolysToSubstract.GetCornersCount() > 0 )
{
KI_POLYGON_SET polyset_holes;
cornerBufferPolysToSubstract.ExportTo( polyset_holes );
// Remove holes from initial area.:
polyset_zone_solid_areas -= polyset_holes;
}
// put solid areas in m_FilledPolysList:
m_FilledPolysList.RemoveAllContours();
CopyPolygonsFromKiPolygonListToFilledPolysList( polyset_zone_solid_areas );
// Remove insulated islands:
if( GetNetCode() > 0 )
TestForCopperIslandAndRemoveInsulatedIslands( aPcb );
// Now we remove all unused thermal stubs.
cornerBufferPolysToSubstract.RemoveAllContours();
// Test thermal stubs connections and add polygons to remove unconnected stubs.
// (this is a refinement for thermal relief shapes)
if( GetNetCode() > 0 )
BuildUnconnectedThermalStubsPolygonList( cornerBufferPolysToSubstract, aPcb, this,
s_Correction, s_thermalRot );
// remove copper areas corresponding to not connected stubs
if( cornerBufferPolysToSubstract.GetCornersCount() )
{
KI_POLYGON_SET polyset_holes;
cornerBufferPolysToSubstract.ExportTo( polyset_holes );
// Remove unconnected stubs
polyset_zone_solid_areas -= polyset_holes;
// put these areas in m_FilledPolysList
m_FilledPolysList.RemoveAllContours();
CopyPolygonsFromKiPolygonListToFilledPolysList( polyset_zone_solid_areas );
if( GetNetCode() > 0 )
TestForCopperIslandAndRemoveInsulatedIslands( aPcb );
}
cornerBufferPolysToSubstract.RemoveAllContours();
}
