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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright The 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 "preview_items/construction_geom.h"
#include <layer_ids.h>
#include <gal/graphics_abstraction_layer.h>
#include <geometry/shape_utils.h>
#include <preview_items/item_drawing_utils.h>
#include <view/view.h>
using namespace KIGFX;
CONSTRUCTION_GEOM::CONSTRUCTION_GEOM() :
EDA_ITEM( nullptr, NOT_USED ), // Never added to a BOARD/SCHEMATIC so it needs no type
m_color( COLOR4D::WHITE ), m_persistentColor( COLOR4D::WHITE )
{
}
void CONSTRUCTION_GEOM::AddDrawable( const DRAWABLE& aItem, bool aPersistent )
{
m_drawables.push_back( { aItem, aPersistent } );
}
void CONSTRUCTION_GEOM::ClearDrawables()
{
m_drawables.clear();
}
const BOX2I CONSTRUCTION_GEOM::ViewBBox() const
{
// We could be a bit more circumspect here, but much of the time the
// extended lines go across the whole screen anyway
BOX2I bbox;
bbox.SetMaximum();
return bbox;
}
void CONSTRUCTION_GEOM::ViewDraw( int aLayer, VIEW* aView ) const
{
GAL& gal = *aView->GetGAL();
gal.SetIsFill( false );
gal.SetIsStroke( true );
gal.SetLineWidth( 1 );
const BOX2I viewport = BOX2ISafe( aView->GetViewport() );
// Prevents extremely short snap lines from inhibiting drawing
// These can happen due to rounding in intersections, etc.
// (usually it is length 1 IU)
const int minSnapLineLength = 10;
const bool haveSnapLine = m_snapLine && m_snapLine->Length() >= minSnapLineLength;
// Avoid fighting with the snap line
const auto drawLineIfNotAlsoSnapLine = [&]( const SEG& aLine )
{
if( !haveSnapLine || !aLine.ApproxCollinear( *m_snapLine, 1 ) )
{
gal.DrawLine( aLine.A, aLine.B );
}
};
// Draw all the items
for( const DRAWABLE_INFO& drawable : m_drawables )
{
gal.SetStrokeColor( drawable.IsPersistent ? m_persistentColor : m_color );
std::visit(
[&]( const auto& visited )
{
using ItemType = std::decay_t<decltype( visited )>;
if constexpr( std::is_same_v<ItemType, LINE> )
{
// Extend the segment to the viewport boundary
std::optional<SEG> segToBoundary =
KIGEOM::ClipLineToBox( visited, viewport );
if( segToBoundary )
{
drawLineIfNotAlsoSnapLine( *segToBoundary );
}
}
else if constexpr( std::is_same_v<ItemType, HALF_LINE> )
{
// Extend the ray to the viewport boundary
std::optional<SEG> segToBoundary =
KIGEOM::ClipHalfLineToBox( visited, viewport );
if( segToBoundary )
{
drawLineIfNotAlsoSnapLine( *segToBoundary );
}
}
else if constexpr( std::is_same_v<ItemType, SEG> )
{
drawLineIfNotAlsoSnapLine( visited );
}
else if constexpr( std::is_same_v<ItemType, CIRCLE> )
{
gal.DrawCircle( visited.Center, visited.Radius );
}
else if constexpr( std::is_same_v<ItemType, SHAPE_ARC> )
{
gal.DrawArc( visited.GetCenter(), visited.GetRadius(),
visited.GetStartAngle(), visited.GetCentralAngle() );
}
else if constexpr( std::is_same_v<ItemType, VECTOR2I> )
{
KIGFX::DrawCross( gal, visited, aView->ToWorld( 16 ) );
}
},
drawable.Item );
}
if( haveSnapLine )
{
gal.SetStrokeColor( m_persistentColor );
const int dashSizeBasis = aView->ToWorld( 12 );
const int snapOriginMarkerSize = aView->ToWorld( 16 );
// Avoid clash with the snap marker if very close
const int omitStartMarkerIfWithinLength = aView->ToWorld( 8 );
// The line itself
KIGFX::DrawDashedLine( gal, *m_snapLine, dashSizeBasis );
// The line origin marker if the line is long enough
if( m_snapLine->A.Distance( m_snapLine->B ) > omitStartMarkerIfWithinLength )
{
KIGFX::DrawCross( gal, m_snapLine->A, snapOriginMarkerSize );
gal.DrawCircle( m_snapLine->A, snapOriginMarkerSize / 2 );
}
}
}
std::vector<int> CONSTRUCTION_GEOM::ViewGetLayers() const
{
// Don't use LAYER_GP_OVERLAY, we need the construction geometry to be visible
// on top of the axis cross
std::vector<int> layers{ LAYER_UI_START };
return layers;
}
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