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kicad/gerbview/gerbview_painter.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 Jon Evans <jon@craftyjon.com>
* Copyright (C) 2017-2023 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <gerbview_painter.h>
#include <gal/graphics_abstraction_layer.h>
#include <pgm_base.h>
#include <settings/settings_manager.h>
#include <settings/color_settings.h>
#include <gerbview_settings.h>
#include <convert_basic_shapes_to_polygon.h>
#include <gerbview.h>
#include <trigo.h>
#include <dcode.h>
#include <gerber_draw_item.h>
#include <gerber_file_image.h>
using namespace KIGFX;
GERBVIEW_SETTINGS* gvconfig()
{
return Pgm().GetSettingsManager().GetAppSettings<GERBVIEW_SETTINGS>();
}
GERBVIEW_RENDER_SETTINGS::GERBVIEW_RENDER_SETTINGS()
{
m_backgroundColor = COLOR4D::BLACK;
m_componentHighlightString = "";
m_netHighlightString = "";
m_attributeHighlightString = "";
m_dcodeHighlightValue = -1;
update();
}
void GERBVIEW_RENDER_SETTINGS::LoadColors( const COLOR_SETTINGS* aSettings )
{
// Layers to draw gerber data read from gerber files:
for( int i = GERBVIEW_LAYER_ID_START;
i < GERBVIEW_LAYER_ID_START + GERBER_DRAWLAYERS_COUNT; i++ )
{
COLOR4D baseColor = aSettings->GetColor( i );
if( gvconfig()->m_Display.m_DiffMode )
baseColor.a = 0.75;
m_layerColors[i] = baseColor;
m_layerColorsHi[i] = baseColor.Brightened( 0.5 );
m_layerColorsSel[i] = baseColor.Brightened( 0.8 );
m_layerColorsDark[i] = baseColor.Darkened( 0.25 );
}
// Draw layers specific to Gerbview:
// LAYER_DCODES, LAYER_NEGATIVE_OBJECTS, LAYER_GERBVIEW_GRID, LAYER_GERBVIEW_AXES,
// LAYER_GERBVIEW_BACKGROUND, LAYER_GERBVIEW_DRAWINGSHEET, LAYER_GERBVIEW_PAGE_LIMITS
for( int i = LAYER_DCODES; i < GERBVIEW_LAYER_ID_END; i++ )
m_layerColors[i] = aSettings->GetColor( i );
for( int i = GAL_LAYER_ID_START; i < GAL_LAYER_ID_END; i++ )
m_layerColors[i] = aSettings->GetColor( i );
// Ensure the generic LAYER_DRAWINGSHEET has the same color as the specialized
// LAYER_GERBVIEW_DRAWINGSHEET
m_layerColors[LAYER_DRAWINGSHEET] = m_layerColors[ LAYER_GERBVIEW_DRAWINGSHEET ];
update();
}
void GERBVIEW_RENDER_SETTINGS::ClearHighlightSelections()
{
// Clear all highlight selections (dcode, net, component, attribute selection)
m_componentHighlightString.Empty();
m_netHighlightString.Empty();
m_attributeHighlightString.Empty();
m_dcodeHighlightValue = -1;
}
COLOR4D GERBVIEW_RENDER_SETTINGS::GetColor( const VIEW_ITEM* aItem, int aLayer ) const
{
const EDA_ITEM* item = dynamic_cast<const EDA_ITEM*>( aItem );
static const COLOR4D transparent = COLOR4D( 0, 0, 0, 0 );
const GERBER_DRAW_ITEM* gbrItem = nullptr;
if( item && item->Type() == GERBER_DRAW_ITEM_T )
gbrItem = static_cast<const GERBER_DRAW_ITEM*>( item );
// All DCODE layers stored under a single color setting
if( IsDCodeLayer( aLayer ) )
return m_layerColors[ LAYER_DCODES ];
if( item && item->IsSelected() )
return m_layerColorsSel[aLayer];
if( gbrItem && gbrItem->GetLayerPolarity() )
{
if( gvconfig()->m_Appearance.show_negative_objects )
return m_layerColors[LAYER_NEGATIVE_OBJECTS];
else
return transparent;
}
if( !m_netHighlightString.IsEmpty() && gbrItem &&
m_netHighlightString == gbrItem->GetNetAttributes().m_Netname )
return m_layerColorsHi[aLayer];
if( !m_componentHighlightString.IsEmpty() && gbrItem &&
m_componentHighlightString == gbrItem->GetNetAttributes().m_Cmpref )
return m_layerColorsHi[aLayer];
if( !m_attributeHighlightString.IsEmpty() && gbrItem && gbrItem->GetDcodeDescr() &&
m_attributeHighlightString == gbrItem->GetDcodeDescr()->m_AperFunction )
return m_layerColorsHi[aLayer];
if( m_dcodeHighlightValue> 0 && gbrItem && gbrItem->GetDcodeDescr() &&
m_dcodeHighlightValue == gbrItem->GetDcodeDescr()->m_Num_Dcode )
return m_layerColorsHi[aLayer];
// Return grayish color for non-highlighted layers in the high contrast mode
if( m_hiContrastEnabled && m_highContrastLayers.count( aLayer ) == 0)
return m_hiContrastColor[aLayer];
// Catch the case when highlight and high-contraste modes are enabled
// and we are drawing a not highlighted track
if( m_highlightEnabled )
return m_layerColorsDark[aLayer];
// No special modificators enabled
return m_layerColors[aLayer];
}
bool GERBVIEW_RENDER_SETTINGS::GetShowPageLimits() const
{
return gvconfig()->m_Display.m_DisplayPageLimits;
}
GERBVIEW_PAINTER::GERBVIEW_PAINTER( GAL* aGal ) :
PAINTER( aGal )
{
}
// TODO(JE): Pull up to PAINTER?
int GERBVIEW_PAINTER::getLineThickness( int aActualThickness ) const
{
// if items have 0 thickness, draw them with the outline width, otherwise respect the set
// value (which, no matter how small will produce something)
if( aActualThickness == 0 )
return m_gerbviewSettings.m_outlineWidth;
return aActualThickness;
}
bool GERBVIEW_PAINTER::Draw( const VIEW_ITEM* aItem, int aLayer )
{
GERBER_DRAW_ITEM* gbrItem = dynamic_cast<GERBER_DRAW_ITEM*>( const_cast<VIEW_ITEM*>( aItem ) );
if( gbrItem )
{
draw( gbrItem, aLayer );
return true;
}
return false;
}
// TODO(JE) aItem can't be const because of GetDcodeDescr()
// Probably that can be refactored in GERBER_DRAW_ITEM to allow const here.
void GERBVIEW_PAINTER::draw( /*const*/ GERBER_DRAW_ITEM* aItem, int aLayer )
{
VECTOR2D start( aItem->GetABPosition( aItem->m_Start ) ); // TODO(JE) Getter
VECTOR2D end( aItem->GetABPosition( aItem->m_End ) ); // TODO(JE) Getter
int width = aItem->m_Size.x; // TODO(JE) Getter
bool isFilled = true;
COLOR4D color;
// TODO(JE) This doesn't actually work properly for ImageNegative
bool isNegative = ( aItem->GetLayerPolarity() ^ aItem->m_GerberImageFile->m_ImageNegative );
// Draw DCODE overlay text
if( IsDCodeLayer( aLayer ) )
{
wxString codeText;
VECTOR2I textPosition;
int textSize;
EDA_ANGLE orient;
if( !aItem->GetTextD_CodePrms( textSize, textPosition, orient ) )
return;
color = m_gerbviewSettings.GetColor( aItem, aLayer );
codeText.Printf( wxT( "D%d" ), aItem->m_DCode );
m_gal->SetIsStroke( true );
m_gal->SetIsFill( false );
m_gal->SetStrokeColor( color );
m_gal->SetFillColor( COLOR4D( 0, 0, 0, 0 ) );
m_gal->SetLineWidth( textSize/10 );
m_gal->SetFontBold( false );
m_gal->SetFontItalic( false );
m_gal->SetFontUnderlined( false );
m_gal->SetTextMirrored( false );
m_gal->SetGlyphSize( VECTOR2D( textSize, textSize) );
m_gal->SetHorizontalJustify( GR_TEXT_H_ALIGN_CENTER );
m_gal->SetVerticalJustify( GR_TEXT_V_ALIGN_CENTER );
m_gal->BitmapText( codeText, textPosition, orient );
return;
}
color = m_gerbviewSettings.GetColor( aItem, aLayer );
// TODO: Should brightened color be a preference?
if( aItem->IsBrightened() )
color = COLOR4D( 0.0, 1.0, 0.0, 0.75 );
m_gal->SetNegativeDrawMode( isNegative && !gvconfig()->m_Appearance.show_negative_objects );
m_gal->SetStrokeColor( color );
m_gal->SetFillColor( color );
m_gal->SetIsFill( isFilled );
m_gal->SetIsStroke( !isFilled );
switch( aItem->m_ShapeType )
{
case GBR_POLYGON:
{
isFilled = gvconfig()->m_Display.m_DisplayPolygonsFill;
m_gal->SetIsFill( isFilled );
m_gal->SetIsStroke( !isFilled );
if( isNegative && !isFilled )
{
m_gal->SetNegativeDrawMode( false );
m_gal->SetStrokeColor( GetSettings()->GetColor( aItem, aLayer ) );
}
if( !isFilled )
m_gal->SetLineWidth( m_gerbviewSettings.m_outlineWidth );
if( aItem->m_AbsolutePolygon.OutlineCount() == 0 )
{
std::vector<VECTOR2I> pts = aItem->m_ShapeAsPolygon.COutline( 0 ).CPoints();
for( auto& pt : pts )
pt = aItem->GetABPosition( pt );
SHAPE_LINE_CHAIN chain( pts );
chain.SetClosed( true );
aItem->m_AbsolutePolygon.AddOutline( chain );
}
// Degenerated polygons (having < 3 points) are drawn as lines
// to avoid issues in draw polygon functions
if( !isFilled || aItem->m_AbsolutePolygon.COutline( 0 ).PointCount() < 3 )
m_gal->DrawPolyline( aItem->m_AbsolutePolygon.COutline( 0 ) );
else
{
// On Opengl, a not convex filled polygon is usually drawn by using triangles as
// primitives. CacheTriangulation() can create basic triangle primitives to draw the
// polygon solid shape on Opengl
// We use the fastest CacheTriangulation calculation mode: no partition created because
// the partition is useless in Gerbview, and very time consumming (optimized only
// for pcbnew that has different internal unit)
if( m_gal->IsOpenGlEngine() && !aItem->m_AbsolutePolygon.IsTriangulationUpToDate() )
aItem->m_AbsolutePolygon.CacheTriangulation( false /* fastest triangulation calculation mode */ );
m_gal->DrawPolygon( aItem->m_AbsolutePolygon );
}
break;
}
case GBR_CIRCLE:
{
isFilled = gvconfig()->m_Display.m_DisplayLinesFill;
double radius = GetLineLength( aItem->m_Start, aItem->m_End );
m_gal->DrawCircle( start, radius );
break;
}
case GBR_ARC:
{
isFilled = gvconfig()->m_Display.m_DisplayLinesFill;
// These are swapped because wxDC fills arcs counterclockwise and GAL
// fills them clockwise.
VECTOR2I arcStart = aItem->m_End;
VECTOR2I arcEnd = aItem->m_Start;
// Gerber arcs are 3-point (start, center, end)
// GAL needs center, radius, start angle, end angle
double radius = GetLineLength( arcStart, aItem->m_ArcCentre );
VECTOR2D center = aItem->GetABPosition( aItem->m_ArcCentre );
VECTOR2D startVec = VECTOR2D( aItem->GetABPosition( arcStart ) ) - center;
VECTOR2D endVec = VECTOR2D( aItem->GetABPosition( arcEnd ) ) - center;
m_gal->SetIsFill( isFilled );
m_gal->SetIsStroke( !isFilled );
m_gal->SetLineWidth( isFilled ? width : m_gerbviewSettings.m_outlineWidth );
EDA_ANGLE startAngle( startVec );
EDA_ANGLE endAngle( endVec );
// GAL fills in direction of increasing angle, so we have to convert
// the angle from the -PI to PI domain of atan2() to ensure that
// the arc goes in the right direction
if( startAngle > endAngle )
endAngle += ANGLE_360;
// In Gerber, 360-degree arcs are stored in the file with start equal to end
if( arcStart == arcEnd )
endAngle = startAngle + ANGLE_360;
// Adjust the allowed approx error to convert arcs to segments:
int arc_to_seg_error = gerbIUScale.mmToIU( 0.005 ); // Allow 5 microns
m_gal->DrawArcSegment( center, radius, startAngle, endAngle, width, arc_to_seg_error );
#if 0 // Arc Debugging only
m_gal->SetIsFill( false );
m_gal->SetIsStroke( true );
m_gal->SetLineWidth( 5 );
m_gal->SetStrokeColor( COLOR4D( 0.1, 0.5, 0.0, 0.5 ) );
m_gal->DrawLine( center, aItem->GetABPosition( arcStart ) );
m_gal->SetStrokeColor( COLOR4D( 0.6, 0.1, 0.0, 0.5 ) );
m_gal->DrawLine( center, aItem->GetABPosition( arcEnd ) );
#endif
#if 0 // Bbox arc Debugging only
m_gal->SetIsFill( false );
m_gal->SetIsStroke( true );
BOX2I box = aItem->GetBoundingBox();
m_gal->SetLineWidth( 5 );
m_gal->SetStrokeColor( COLOR4D(0.9, 0.9, 0, 0.4) );
// box coordinates are already in AB position.
m_gal->DrawRectangle( box.GetOrigin(), box.GetEnd() );
#endif
break;
}
case GBR_SPOT_CIRCLE:
case GBR_SPOT_RECT:
case GBR_SPOT_OVAL:
case GBR_SPOT_POLY:
case GBR_SPOT_MACRO:
isFilled = gvconfig()->m_Display.m_DisplayFlashedItemsFill;
drawFlashedShape( aItem, isFilled );
break;
case GBR_SEGMENT:
{
/* Plot a line from m_Start to m_End.
* Usually, a round pen is used, but some gerber files use a rectangular pen
* In fact, any aperture can be used to plot a line.
* currently: only a square pen is handled (I believe using a polygon gives a strange plot).
*/
isFilled = gvconfig()->m_Display.m_DisplayLinesFill;
m_gal->SetIsFill( isFilled );
m_gal->SetIsStroke( !isFilled );
if( isNegative && !isFilled )
m_gal->SetStrokeColor( GetSettings()->GetColor( aItem, aLayer ) );
// TODO(JE) Refactor this to allow const aItem
D_CODE* code = aItem->GetDcodeDescr();
if( code && code->m_ApertType == APT_RECT )
{
if( aItem->m_ShapeAsPolygon.OutlineCount() == 0 )
aItem->ConvertSegmentToPolygon();
drawPolygon( aItem, aItem->m_ShapeAsPolygon, isFilled );
}
else
{
if( !isFilled )
m_gal->SetLineWidth( m_gerbviewSettings.m_outlineWidth );
m_gal->DrawSegment( start, end, width );
}
break;
}
default:
wxASSERT_MSG( false, wxT( "GERBER_DRAW_ITEM shape is unknown!" ) );
break;
}
m_gal->SetNegativeDrawMode( false );
// Enable for bounding box debugging
#if 0
const BOX2I& bb = aItem->ViewBBox();
m_gal->SetIsStroke( true );
m_gal->SetIsFill( true );
m_gal->SetLineWidth( 3 );
m_gal->SetStrokeColor( COLOR4D(0.9, 0.9, 0, 0.4) );
m_gal->SetFillColor( COLOR4D(0.9, 0.9, 0, 0.1) );
m_gal->DrawRectangle( bb.GetOrigin(), bb.GetEnd() );
#endif
}
void GERBVIEW_PAINTER::drawPolygon( GERBER_DRAW_ITEM* aParent, const SHAPE_POLY_SET& aPolygon,
bool aFilled, bool aShift )
{
wxASSERT( aPolygon.OutlineCount() == 1 );
if( aPolygon.OutlineCount() == 0 )
return;
SHAPE_POLY_SET poly;
poly.NewOutline();
const std::vector<VECTOR2I> pts = aPolygon.COutline( 0 ).CPoints();
VECTOR2I offset = aShift ? VECTOR2I( aParent->m_Start ) : VECTOR2I( 0, 0 );
for( const VECTOR2I& pt : pts )
poly.Append( aParent->GetABPosition( pt + offset ) );
if( !gvconfig()->m_Display.m_DisplayPolygonsFill )
m_gal->SetLineWidth( m_gerbviewSettings.m_outlineWidth );
if( !aFilled )
m_gal->DrawPolyline( poly.COutline( 0 ) );
else
m_gal->DrawPolygon( poly );
}
void GERBVIEW_PAINTER::drawFlashedShape( GERBER_DRAW_ITEM* aItem, bool aFilled )
{
D_CODE* code = aItem->GetDcodeDescr();
wxASSERT_MSG( code, wxT( "drawFlashedShape: Item has no D_CODE!" ) );
if( !code )
return;
m_gal->SetIsFill( aFilled );
m_gal->SetIsStroke( !aFilled );
m_gal->SetLineWidth( m_gerbviewSettings.m_outlineWidth );
switch( aItem->m_ShapeType )
{
case GBR_SPOT_CIRCLE:
{
int radius = code->m_Size.x >> 1;
VECTOR2D start( aItem->GetABPosition( aItem->m_Start ) );
if( !aFilled || code->m_DrillShape == APT_DEF_NO_HOLE )
{
m_gal->DrawCircle( start, radius );
}
else // rectangular hole
{
if( code->m_Polygon.OutlineCount() == 0 )
code->ConvertShapeToPolygon( aItem );
drawPolygon( aItem, code->m_Polygon, aFilled, true );
}
break;
}
case GBR_SPOT_RECT:
{
VECTOR2I codeStart;
VECTOR2I aShapePos = aItem->m_Start;
codeStart.x = aShapePos.x - code->m_Size.x / 2;
codeStart.y = aShapePos.y - code->m_Size.y / 2;
VECTOR2I codeEnd = codeStart + code->m_Size;
codeStart = aItem->GetABPosition( codeStart );
codeEnd = aItem->GetABPosition( codeEnd );
if( !aFilled || code->m_DrillShape == APT_DEF_NO_HOLE )
{
m_gal->DrawRectangle( VECTOR2D( codeStart ), VECTOR2D( codeEnd ) );
}
else
{
if( code->m_Polygon.OutlineCount() == 0 )
code->ConvertShapeToPolygon( aItem );
drawPolygon( aItem, code->m_Polygon, aFilled, true );
}
break;
}
case GBR_SPOT_OVAL:
{
int radius = 0;
VECTOR2I codeStart = aItem->m_Start;
VECTOR2I codeEnd = aItem->m_Start;
if( code->m_Size.x > code->m_Size.y ) // horizontal oval
{
int delta = (code->m_Size.x - code->m_Size.y) / 2;
codeStart.x -= delta;
codeEnd.x += delta;
radius = code->m_Size.y;
}
else // horizontal oval
{
int delta = (code->m_Size.y - code->m_Size.x) / 2;
codeStart.y -= delta;
codeEnd.y += delta;
radius = code->m_Size.x;
}
codeStart = aItem->GetABPosition( codeStart );
codeEnd = aItem->GetABPosition( codeEnd );
if( !aFilled || code->m_DrillShape == APT_DEF_NO_HOLE )
{
m_gal->DrawSegment( codeStart, codeEnd, radius );
}
else
{
if( code->m_Polygon.OutlineCount() == 0 )
code->ConvertShapeToPolygon( aItem );
drawPolygon( aItem, code->m_Polygon, aFilled, true );
}
break;
}
case GBR_SPOT_POLY:
if( code->m_Polygon.OutlineCount() == 0 )
code->ConvertShapeToPolygon( aItem );
drawPolygon( aItem, code->m_Polygon, aFilled, true );
break;
case GBR_SPOT_MACRO:
drawApertureMacro( aItem, aFilled );
break;
default:
wxASSERT_MSG( false, wxT( "Unknown Gerber flashed shape!" ) );
break;
}
}
void GERBVIEW_PAINTER::drawApertureMacro( GERBER_DRAW_ITEM* aParent, bool aFilled )
{
D_CODE* code = aParent->GetDcodeDescr();
APERTURE_MACRO* macro = code->GetMacro();
SHAPE_POLY_SET* macroShape = macro->GetApertureMacroShape( aParent, aParent->m_Start );
if( !gvconfig()->m_Display.m_DisplayPolygonsFill )
m_gal->SetLineWidth( m_gerbviewSettings.m_outlineWidth );
if( !aFilled )
{
for( int i = 0; i < macroShape->OutlineCount(); i++ )
m_gal->DrawPolyline( macroShape->COutline( i ) );
}
else
{
m_gal->DrawPolygon( *macroShape );
}
}
const double GERBVIEW_RENDER_SETTINGS::MAX_FONT_SIZE = gerbIUScale.mmToIU( 10.0 );
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