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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2009-2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 1992-2019 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 <fctsys.h>
#include <vector>
#include <bezier_curves.h>
#include <base_units.h> // for IU_PER_MM
#include <gr_text.h>
#include <pcbnew.h>
#include <pcb_edit_frame.h>
#include <trigo.h>
#include <class_board.h>
#include <class_pad.h>
#include <class_track.h>
#include <class_drawsegment.h>
#include <class_pcb_text.h>
#include <class_zone.h>
#include <class_module.h>
#include <class_edge_mod.h>
#include <convert_basic_shapes_to_polygon.h>
#include <geometry/geometry_utils.h>
#include <geometry/shape_segment.h>
#include <math/util.h> // for KiROUND
// A helper struct for the callback function
// These variables are parameters used in addTextSegmToPoly.
// But addTextSegmToPoly is a call-back function,
// so we cannot send them as arguments.
struct TSEGM_2_POLY_PRMS {
int m_textWidth;
int m_error;
SHAPE_POLY_SET* m_cornerBuffer;
};
TSEGM_2_POLY_PRMS prms;
// This is a call back function, used by GRText to draw the 3D text shape:
static void addTextSegmToPoly( int x0, int y0, int xf, int yf, void* aData )
{
TSEGM_2_POLY_PRMS* prm = static_cast<TSEGM_2_POLY_PRMS*>( aData );
TransformSegmentToPolygon( *prm->m_cornerBuffer,
wxPoint( x0, y0 ), wxPoint( xf, yf ),
prm->m_error, prm->m_textWidth );
}
void BOARD::ConvertBrdLayerToPolygonalContours( PCB_LAYER_ID aLayer, SHAPE_POLY_SET& aOutlines )
{
// convert tracks and vias:
for( auto track : m_tracks )
{
if( !track->IsOnLayer( aLayer ) )
continue;
track->TransformShapeWithClearanceToPolygon( aOutlines, aLayer, 0 );
}
// convert pads
for( auto module : m_modules )
{
module->TransformPadsShapesWithClearanceToPolygon( aLayer, aOutlines, 0 );
// Micro-wave modules may have items on copper layers
module->TransformGraphicShapesWithClearanceToPolygonSet( aLayer, aOutlines, 0 );
}
// convert copper zones
for( ZONE_CONTAINER* zone : Zones() )
{
if( zone->GetLayerSet().test( aLayer ) )
zone->TransformSolidAreasShapesToPolygon( aLayer, aOutlines );
}
// convert graphic items on copper layers (texts)
for( auto item : m_drawings )
{
if( !item->IsOnLayer( aLayer ) )
continue;
switch( item->Type() )
{
case PCB_LINE_T:
( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon( aOutlines, aLayer, 0 );
break;
case PCB_TEXT_T:
( (TEXTE_PCB*) item )->TransformShapeWithClearanceToPolygonSet( aOutlines, 0 );
break;
default:
break;
}
}
}
void MODULE::TransformPadsShapesWithClearanceToPolygon( PCB_LAYER_ID aLayer,
SHAPE_POLY_SET& aCornerBuffer,
int aInflateValue, int aMaxError,
bool aSkipNPTHPadsWihNoCopper ) const
{
for( D_PAD* pad : m_pads )
{
if( aLayer != UNDEFINED_LAYER && !pad->IsOnLayer(aLayer) )
continue;
if( !pad->IsPadOnLayer( aLayer ) && IsCopperLayer( aLayer ) )
continue;
// NPTH pads are not drawn on layers if the shape size and pos is the same
// as their hole:
if( aSkipNPTHPadsWihNoCopper && pad->GetAttribute() == PAD_ATTRIB_HOLE_NOT_PLATED )
{
if( pad->GetDrillSize() == pad->GetSize() && pad->GetOffset() == wxPoint( 0, 0 ) )
{
switch( pad->GetShape() )
{
case PAD_SHAPE_CIRCLE:
if( pad->GetDrillShape() == PAD_DRILL_SHAPE_CIRCLE )
continue;
break;
case PAD_SHAPE_OVAL:
if( pad->GetDrillShape() != PAD_DRILL_SHAPE_CIRCLE )
continue;
break;
default:
break;
}
}
}
wxSize clearance( aInflateValue, aInflateValue );
switch( aLayer )
{
case F_Mask:
case B_Mask:
clearance.x += pad->GetSolderMaskMargin();
clearance.y += pad->GetSolderMaskMargin();
break;
case F_Paste:
case B_Paste:
clearance += pad->GetSolderPasteMargin();
break;
default:
break;
}
// Our standard TransformShapeWithClearanceToPolygon() routines can't handle differing
// x:y clearance values (which get generated when a relative paste margin is used with
// an oblong pad). So we apply this huge hack and fake a larger pad to run the transform
// on.
// Of course being a hack it falls down when dealing with custom shape pads (where the
// size is only the size of the anchor), so for those we punt and just use clearance.x.
if( ( clearance.x < 0 || clearance.x != clearance.y )
&& pad->GetShape() != PAD_SHAPE_CUSTOM )
{
D_PAD dummy( *pad );
dummy.SetSize( pad->GetSize() + clearance + clearance );
dummy.TransformShapeWithClearanceToPolygon( aCornerBuffer, aLayer, 0, aMaxError );
}
else
{
pad->TransformShapeWithClearanceToPolygon( aCornerBuffer, aLayer, clearance.x,
aMaxError );
}
}
}
/**
* Generate shapes of graphic items (outlines) as polygons added to a buffer.
* @aCornerBuffer = the buffer to store polygons
* @aInflateValue = a value to inflate shapes
* @aError = the maximum error to allow when approximating curves with segments
* @aIncludeText = indicates footprint text items (reference, value, etc.) should be included
* in the outline
*/
void MODULE::TransformGraphicShapesWithClearanceToPolygonSet( PCB_LAYER_ID aLayer,
SHAPE_POLY_SET& aCornerBuffer,
int aInflateValue,
int aError,
bool aIncludeText,
bool aIncludeEdges ) const
{
std::vector<TEXTE_MODULE *> texts; // List of TEXTE_MODULE to convert
for( auto item : GraphicalItems() )
{
if( item->Type() == PCB_MODULE_TEXT_T && aIncludeText )
{
TEXTE_MODULE* text = static_cast<TEXTE_MODULE*>( item );
if( aLayer != UNDEFINED_LAYER && text->GetLayer() == aLayer && text->IsVisible() )
texts.push_back( text );
}
if( item->Type() == PCB_MODULE_EDGE_T && aIncludeEdges )
{
EDGE_MODULE* outline = (EDGE_MODULE*) item;
if( aLayer != UNDEFINED_LAYER && outline->GetLayer() == aLayer )
outline->TransformShapeWithClearanceToPolygon( aCornerBuffer, aLayer, 0, aError );
}
}
if( aIncludeText )
{
if( Reference().GetLayer() == aLayer && Reference().IsVisible() )
texts.push_back( &Reference() );
if( Value().GetLayer() == aLayer && Value().IsVisible() )
texts.push_back( &Value() );
}
prms.m_cornerBuffer = &aCornerBuffer;
for( TEXTE_MODULE* textmod : texts )
{
bool forceBold = true;
int penWidth = 0; // force max width for bold text
prms.m_textWidth = textmod->GetEffectiveTextPenWidth() + ( 2 * aInflateValue );
prms.m_error = aError;
wxSize size = textmod->GetTextSize();
if( textmod->IsMirrored() )
size.x = -size.x;
GRText( NULL, textmod->GetTextPos(), BLACK, textmod->GetShownText(),
textmod->GetDrawRotation(), size, textmod->GetHorizJustify(),
textmod->GetVertJustify(), penWidth, textmod->IsItalic(), forceBold,
addTextSegmToPoly, &prms );
}
}
void ZONE_CONTAINER::TransformSolidAreasShapesToPolygon( PCB_LAYER_ID aLayer,
SHAPE_POLY_SET& aCornerBuffer,
int aError ) const
{
if( !m_FilledPolysList.count( aLayer ) || m_FilledPolysList.at( aLayer ).IsEmpty() )
return;
// Just add filled areas if filled polygons outlines have no thickness
if( !GetFilledPolysUseThickness() || GetMinThickness() == 0 )
{
const SHAPE_POLY_SET& polys = m_FilledPolysList.at( aLayer );
aCornerBuffer.Append( polys );
return;
}
// Filled areas have polygons with outline thickness.
// we must create the polygons and add inflated polys
SHAPE_POLY_SET polys = m_FilledPolysList.at( aLayer );
auto board = GetBoard();
int maxError = ARC_HIGH_DEF;
if( board )
maxError = board->GetDesignSettings().m_MaxError;
int numSegs = std::max( GetArcToSegmentCount( GetMinThickness(), maxError, 360.0 ), 12 );
polys.InflateWithLinkedHoles( GetMinThickness()/2, numSegs, SHAPE_POLY_SET::PM_FAST );
aCornerBuffer.Append( polys );
}
void EDA_TEXT::TransformBoundingBoxWithClearanceToPolygon( SHAPE_POLY_SET* aCornerBuffer,
int aClearanceValue ) const
{
if( GetText().Length() == 0 )
return;
wxPoint corners[4]; // Buffer of polygon corners
EDA_RECT rect = GetTextBox();
rect.Inflate( aClearanceValue + Millimeter2iu( DEFAULT_TEXT_WIDTH ) );
corners[0].x = rect.GetOrigin().x;
corners[0].y = rect.GetOrigin().y;
corners[1].y = corners[0].y;
corners[1].x = rect.GetRight();
corners[2].x = corners[1].x;
corners[2].y = rect.GetBottom();
corners[3].y = corners[2].y;
corners[3].x = corners[0].x;
aCornerBuffer->NewOutline();
for( wxPoint& corner : corners )
{
// Rotate polygon
RotatePoint( &corner.x, &corner.y, GetTextPos().x, GetTextPos().y, GetTextAngle() );
aCornerBuffer->Append( corner.x, corner.y );
}
}
/**
* Function TransformShapeWithClearanceToPolygonSet
* Convert the text shape to a set of polygons (one per segment).
* @aCornerBuffer = SHAPE_POLY_SET to store the polygon corners
* @aClearanceValue = the clearance around the text
* @aError = the maximum error to allow when approximating curves
*/
void TEXTE_PCB::TransformShapeWithClearanceToPolygonSet( SHAPE_POLY_SET& aCornerBuffer,
int aClearanceValue, int aError ) const
{
wxSize size = GetTextSize();
if( IsMirrored() )
size.x = -size.x;
bool forceBold = true;
int penWidth = GetEffectiveTextPenWidth();
prms.m_cornerBuffer = &aCornerBuffer;
prms.m_textWidth = GetEffectiveTextPenWidth() + ( 2 * aClearanceValue );
prms.m_error = aError;
COLOR4D color = COLOR4D::BLACK; // not actually used, but needed by GRText
if( IsMultilineAllowed() )
{
wxArrayString strings_list;
wxStringSplit( GetShownText(), strings_list, '\n' );
std::vector<wxPoint> positions;
positions.reserve( strings_list.Count() );
GetLinePositions( positions, strings_list.Count() );
for( unsigned ii = 0; ii < strings_list.Count(); ii++ )
{
wxString txt = strings_list.Item( ii );
GRText( NULL, positions[ii], color, txt, GetTextAngle(), size, GetHorizJustify(),
GetVertJustify(), penWidth, IsItalic(), forceBold, addTextSegmToPoly, &prms );
}
}
else
{
GRText( NULL, GetTextPos(), color, GetShownText(), GetTextAngle(), size, GetHorizJustify(),
GetVertJustify(), penWidth, IsItalic(), forceBold, addTextSegmToPoly, &prms );
}
}
void DRAWSEGMENT::TransformShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer,
PCB_LAYER_ID aLayer,
int aClearanceValue, int aError,
bool ignoreLineWidth ) const
{
int width = ignoreLineWidth ? 0 : m_Width;
width += 2 * aClearanceValue;
// Creating a reliable clearance shape for circles and arcs is not so easy, due to
// the error created by segment approximation.
// for a circle this is not so hard: create a polygon from a circle slightly bigger:
// thickness = width + s_error_max, and radius = initial radius + s_error_max/2
// giving a shape with a suitable internal radius and external radius
// For an arc this is more tricky: TODO
switch( m_Shape )
{
case S_CIRCLE:
if( width == 0 )
TransformCircleToPolygon( aCornerBuffer, GetCenter(), GetRadius(), aError );
else
TransformRingToPolygon( aCornerBuffer, GetCenter(), GetRadius(), aError, width );
break;
case S_RECT:
{
std::vector<wxPoint> pts;
GetRectCorners( &pts );
if( width == 0 )
{
aCornerBuffer.NewOutline();
for( const wxPoint& pt : pts )
aCornerBuffer.Append( pt );
}
if( width > 0 )
{
// Add in segments
TransformSegmentToPolygon( aCornerBuffer, pts[0], pts[1], aError, width );
TransformSegmentToPolygon( aCornerBuffer, pts[1], pts[2], aError, width );
TransformSegmentToPolygon( aCornerBuffer, pts[2], pts[3], aError, width );
TransformSegmentToPolygon( aCornerBuffer, pts[3], pts[0], aError, width );
}
}
break;
case S_ARC:
TransformArcToPolygon( aCornerBuffer, GetCenter(), GetArcStart(), m_Angle, aError, width );
break;
case S_SEGMENT:
TransformOvalToPolygon( aCornerBuffer, m_Start, m_End, width, aError );
break;
case S_POLYGON:
if( IsPolyShapeValid() )
{
// The polygon is expected to be a simple polygon
// not self intersecting, no hole.
MODULE* module = GetParentModule(); // NULL for items not in footprints
double orientation = module ? module->GetOrientation() : 0.0;
wxPoint offset;
if( module )
offset = module->GetPosition();
// Build the polygon with the actual position and orientation:
std::vector< wxPoint> poly;
poly = BuildPolyPointsList();
for( wxPoint& point : poly )
{
RotatePoint( &point, orientation );
point += offset;
}
if( IsPolygonFilled() || width == 0 )
{
aCornerBuffer.NewOutline();
for( wxPoint& point : poly )
aCornerBuffer.Append( point.x, point.y );
}
if( width > 0 )
{
wxPoint pt1( poly[ poly.size() - 1] );
for( wxPoint pt2 : poly )
{
if( pt2 != pt1 )
TransformSegmentToPolygon( aCornerBuffer, pt1, pt2, aError, width );
pt1 = pt2;
}
}
}
break;
case S_CURVE: // Bezier curve
{
std::vector<wxPoint> ctrlPoints = { m_Start, m_BezierC1, m_BezierC2, m_End };
BEZIER_POLY converter( ctrlPoints );
std::vector< wxPoint> poly;
converter.GetPoly( poly, m_Width );
if( width != 0 )
{
for( unsigned ii = 1; ii < poly.size(); ii++ )
TransformSegmentToPolygon( aCornerBuffer, poly[ii-1], poly[ii], aError, width );
}
}
break;
default:
wxFAIL_MSG( "DRAWSEGMENT::TransformShapeWithClearanceToPolygon no implementation for "
+ STROKE_T_asString( m_Shape ) );
break;
}
}
void TRACK::TransformShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer,
PCB_LAYER_ID aLayer,
int aClearanceValue, int aError,
bool ignoreLineWidth ) const
{
wxASSERT_MSG( !ignoreLineWidth, "IgnoreLineWidth has no meaning for tracks." );
int width = m_Width + ( 2 * aClearanceValue );
switch( Type() )
{
case PCB_VIA_T:
{
int radius = ( m_Width / 2 ) + aClearanceValue;
TransformCircleToPolygon( aCornerBuffer, m_Start, radius, aError );
}
break;
case PCB_ARC_T:
{
const ARC* arc = static_cast<const ARC*>( this );
VECTOR2D center( arc->GetCenter() );
double arc_angle = arc->GetAngle();
TransformArcToPolygon( aCornerBuffer, wxPoint( center.x, center.y ),
GetStart(), arc_angle, aError, width );
}
break;
default:
TransformOvalToPolygon( aCornerBuffer, m_Start, m_End, width, aError );
break;
}
}
void D_PAD::TransformShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer,
PCB_LAYER_ID aLayer,
int aClearanceValue, int aError,
bool ignoreLineWidth ) const
{
wxASSERT_MSG( !ignoreLineWidth, "IgnoreLineWidth has no meaning for pads." );
// minimal segment count to approximate a circle to create the polygonal pad shape
// This minimal value is mainly for very small pads, like SM0402.
// Most of time pads are using the segment count given by aError value.
const int pad_min_seg_per_circle_count = 16;
double angle = m_orient;
int dx = m_size.x / 2;
int dy = m_size.y / 2;
wxPoint padShapePos = ShapePos(); // Note: for pad having a shape offset,
// the pad position is NOT the shape position
switch( GetShape() )
{
case PAD_SHAPE_CIRCLE:
case PAD_SHAPE_OVAL:
if( dx == dy )
{
TransformCircleToPolygon( aCornerBuffer, padShapePos, dx + aClearanceValue, aError );
}
else
{
int half_width = std::min( dx, dy );
wxPoint delta( dx - half_width, dy - half_width );
RotatePoint( &delta, angle );
TransformOvalToPolygon( aCornerBuffer, padShapePos - delta, padShapePos + delta,
( half_width + aClearanceValue ) * 2, aError );
}
break;
case PAD_SHAPE_TRAPEZOID:
case PAD_SHAPE_RECT:
{
int ddx = GetShape() == PAD_SHAPE_TRAPEZOID ? m_deltaSize.x / 2 : 0;
int ddy = GetShape() == PAD_SHAPE_TRAPEZOID ? m_deltaSize.y / 2 : 0;
wxPoint corners[4];
corners[0] = wxPoint( -dx - ddy, dy + ddx );
corners[1] = wxPoint( dx + ddy, dy - ddx );
corners[2] = wxPoint( dx - ddy, -dy + ddx );
corners[3] = wxPoint( -dx + ddy, -dy - ddx );
SHAPE_POLY_SET outline;
outline.NewOutline();
for( wxPoint& corner : corners )
{
RotatePoint( &corner, angle );
corner += padShapePos;
outline.Append( corner.x, corner.y );
}
if( aClearanceValue )
{
int numSegs = std::max( GetArcToSegmentCount( aClearanceValue, aError, 360.0 ),
pad_min_seg_per_circle_count );
double correction = GetCircletoPolyCorrectionFactor( numSegs );
int clearance = KiROUND( aClearanceValue * correction );
outline.Inflate( clearance, numSegs );
// TODO: clamp the inflated polygon, because it is slightly too big:
// it was inflated by a value slightly too big to keep rounded corners
// ouside the pad area.
}
aCornerBuffer.Append( outline );
}
break;
case PAD_SHAPE_CHAMFERED_RECT:
case PAD_SHAPE_ROUNDRECT:
{
int radius = GetRoundRectCornerRadius() + aClearanceValue;
int numSegs = std::max( GetArcToSegmentCount( radius, aError, 360.0 ),
pad_min_seg_per_circle_count );
double correction = GetCircletoPolyCorrectionFactor( numSegs );
int clearance = KiROUND( aClearanceValue * correction );
wxSize shapesize( m_size );
radius = KiROUND( radius * correction );
shapesize.x += clearance * 2;
shapesize.y += clearance * 2;
bool doChamfer = GetShape() == PAD_SHAPE_CHAMFERED_RECT;
SHAPE_POLY_SET outline;
TransformRoundChamferedRectToPolygon( outline, padShapePos, shapesize, angle, radius,
doChamfer ? GetChamferRectRatio() : 0.0,
doChamfer ? GetChamferPositions() : 0, aError );
aCornerBuffer.Append( outline );
}
break;
case PAD_SHAPE_CUSTOM:
{
SHAPE_POLY_SET outline;
MergePrimitivesAsPolygon( &outline, aLayer );
outline.Rotate( -DECIDEG2RAD( m_orient ) );
outline.Move( VECTOR2I( m_pos ) );
// TODO: do we need the Simplify() & Fracture() if we're not inflating?
outline.Simplify( SHAPE_POLY_SET::PM_FAST );
if( aClearanceValue )
{
int numSegs = std::max( GetArcToSegmentCount( aClearanceValue, aError, 360.0 ),
pad_min_seg_per_circle_count );
double correction = GetCircletoPolyCorrectionFactor( numSegs );
int clearance = KiROUND( aClearanceValue * correction );
outline.Inflate( clearance, numSegs );
}
outline.Fracture( SHAPE_POLY_SET::PM_FAST );
aCornerBuffer.Append( outline );
}
break;
default:
wxFAIL_MSG( "D_PAD::TransformShapeWithClearanceToPolygon no implementation for "
+ PAD_SHAPE_T_asString( GetShape() ) );
break;
}
}
bool D_PAD::TransformHoleWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer, int aInflateValue,
int aError ) const
{
wxSize drillsize = GetDrillSize();
if( !drillsize.x || !drillsize.y )
return false;
const SHAPE_SEGMENT* seg = GetEffectiveHoleShape();
TransformSegmentToPolygon( aCornerBuffer, (wxPoint) seg->GetSeg().A, (wxPoint) seg->GetSeg().B,
aError, seg->GetWidth() + aInflateValue * 2 );
return true;
}
void ZONE_CONTAINER::TransformShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer,
PCB_LAYER_ID aLayer, int aClearance,
int aError, bool ignoreLineWidth ) const
{
wxASSERT_MSG( !ignoreLineWidth, "IgnoreLineWidth has no meaning for zones." );
if( !m_FilledPolysList.count( aLayer ) )
return;
aCornerBuffer = m_FilledPolysList.at( aLayer );
aCornerBuffer.Inflate( aClearance, aError );
aCornerBuffer.Simplify( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
}
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