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kicad/pcbnew/tools/grid_helper.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2014 CERN
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
*
* 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 <functional>
using namespace std::placeholders;
#include <pcb_edit_frame.h>
#include <class_board.h>
#include <class_dimension.h>
#include <class_draw_panel_gal.h>
#include <class_edge_mod.h>
#include <class_module.h>
#include <class_zone.h>
#include <painter.h>
#include <view/view.h>
#include <view/view_controls.h>
#include <gal/graphics_abstraction_layer.h>
#include <geometry/shape_line_chain.h>
#include "grid_helper.h"
GRID_HELPER::GRID_HELPER( PCB_BASE_FRAME* aFrame ) :
m_frame( aFrame )
{
m_diagonalAuxAxesEnable = true;
m_enableSnap = true;
m_enableGrid = true;
m_snapSize = 100;
KIGFX::VIEW* view = m_frame->GetGalCanvas()->GetView();
m_viewAxis.SetSize( 20000 );
m_viewAxis.SetStyle( KIGFX::ORIGIN_VIEWITEM::CROSS );
m_viewAxis.SetColor( COLOR4D( 1.0, 1.0, 1.0, 0.4 ) );
m_viewAxis.SetDrawAtZero( true );
view->Add( &m_viewAxis );
view->SetVisible( &m_viewAxis, false );
m_viewSnapPoint.SetStyle( KIGFX::ORIGIN_VIEWITEM::CIRCLE_CROSS );
m_viewSnapPoint.SetColor( COLOR4D( 1.0, 1.0, 1.0, 1.0 ) );
m_viewSnapPoint.SetDrawAtZero( true );
view->Add( &m_viewSnapPoint );
view->SetVisible( &m_viewSnapPoint, false );
}
GRID_HELPER::~GRID_HELPER()
{
}
void GRID_HELPER::SetGrid( int aSize )
{
assert( false );
}
void GRID_HELPER::SetOrigin( const VECTOR2I& aOrigin )
{
assert( false );
}
VECTOR2I GRID_HELPER::GetGrid() const
{
PCB_SCREEN* screen = m_frame->GetScreen();
const wxRealPoint& size = screen->GetGridSize();
return VECTOR2I( KiROUND( size.x ), KiROUND( size.y ) );
}
VECTOR2I GRID_HELPER::GetOrigin() const
{
return VECTOR2I( m_frame->GetGridOrigin() );
}
void GRID_HELPER::SetAuxAxes( bool aEnable, const VECTOR2I& aOrigin, bool aEnableDiagonal )
{
KIGFX::VIEW* view = m_frame->GetGalCanvas()->GetView();
if( aEnable )
{
m_auxAxis = aOrigin;
m_viewAxis.SetPosition( aOrigin );
view->SetVisible( &m_viewAxis, true );
}
else
{
m_auxAxis = OPT<VECTOR2I>();
view->SetVisible( &m_viewAxis, false );
}
m_diagonalAuxAxesEnable = aEnable;
}
VECTOR2I GRID_HELPER::Align( const VECTOR2I& aPoint ) const
{
if( !m_enableGrid )
return aPoint;
const VECTOR2D gridOffset( GetOrigin() );
const VECTOR2D gridSize( GetGrid() );
VECTOR2I nearest( KiROUND( ( aPoint.x - gridOffset.x ) / gridSize.x ) * gridSize.x + gridOffset.x,
KiROUND( ( aPoint.y - gridOffset.y ) / gridSize.y ) * gridSize.y + gridOffset.y );
if( !m_auxAxis )
return nearest;
if( std::abs( m_auxAxis->x - aPoint.x ) < std::abs( nearest.x - aPoint.x ) )
nearest.x = m_auxAxis->x;
if( std::abs( m_auxAxis->y - aPoint.y ) < std::abs( nearest.y - aPoint.y ) )
nearest.y = m_auxAxis->y;
return nearest;
}
VECTOR2I GRID_HELPER::AlignToSegment( const VECTOR2I& aPoint, const SEG& aSeg )
{
OPT_VECTOR2I pts[6];
if( !m_enableSnap )
return aPoint;
const VECTOR2D gridOffset( GetOrigin() );
const VECTOR2D gridSize( GetGrid() );
VECTOR2I nearest( KiROUND( ( aPoint.x - gridOffset.x ) / gridSize.x ) * gridSize.x + gridOffset.x,
KiROUND( ( aPoint.y - gridOffset.y ) / gridSize.y ) * gridSize.y + gridOffset.y );
pts[0] = aSeg.A;
pts[1] = aSeg.B;
pts[2] = aSeg.IntersectLines( SEG( nearest, nearest + VECTOR2I( 1, 0 ) ) );
pts[3] = aSeg.IntersectLines( SEG( nearest, nearest + VECTOR2I( 0, 1 ) ) );
int min_d = std::numeric_limits<int>::max();
for( int i = 0; i < 4; i++ )
{
if( pts[i] && aSeg.Contains( *pts[i] ) )
{
int d = (*pts[i] - aPoint).EuclideanNorm();
if( d < min_d )
{
min_d = d;
nearest = *pts[i];
}
}
}
return nearest;
}
VECTOR2I GRID_HELPER::BestDragOrigin( const VECTOR2I &aMousePos, BOARD_ITEM* aItem )
{
clearAnchors();
computeAnchors( aItem, aMousePos );
double worldScale = m_frame->GetGalCanvas()->GetGAL()->GetWorldScale();
double lineSnapMinCornerDistance = 50.0 / worldScale;
ANCHOR* nearestOutline = nearestAnchor( aMousePos, OUTLINE, LSET::AllLayersMask() );
ANCHOR* nearestCorner = nearestAnchor( aMousePos, CORNER, LSET::AllLayersMask() );
ANCHOR* nearestOrigin = nearestAnchor( aMousePos, ORIGIN, LSET::AllLayersMask() );
ANCHOR* best = NULL;
double minDist = std::numeric_limits<double>::max();
if( nearestOrigin )
{
minDist = nearestOrigin->Distance( aMousePos );
best = nearestOrigin;
}
if( nearestCorner )
{
double dist = nearestCorner->Distance( aMousePos );
if( dist < minDist )
{
minDist = dist;
best = nearestCorner;
}
}
if( nearestOutline )
{
double dist = nearestOutline->Distance( aMousePos );
if( minDist > lineSnapMinCornerDistance && dist < minDist )
best = nearestOutline;
}
return best ? best->pos : aMousePos;
}
std::set<BOARD_ITEM*> GRID_HELPER::queryVisible( const BOX2I& aArea,
const std::vector<BOARD_ITEM*> aSkip ) const
{
std::set<BOARD_ITEM*> items;
std::vector<KIGFX::VIEW::LAYER_ITEM_PAIR> selectedItems;
auto view = m_frame->GetGalCanvas()->GetView();
auto activeLayers = view->GetPainter()->GetSettings()->GetActiveLayers();
bool isHighContrast = view->GetPainter()->GetSettings()->GetHighContrast();
view->Query( aArea, selectedItems );
for( auto it : selectedItems )
{
BOARD_ITEM* item = static_cast<BOARD_ITEM*>( it.first );
// The item must be visible and on an active layer
if( view->IsVisible( item )
&& ( !isHighContrast || activeLayers.count( it.second ) ) )
items.insert ( item );
}
for( auto ii : aSkip )
items.erase( ii );
return items;
}
VECTOR2I GRID_HELPER::BestSnapAnchor( const VECTOR2I& aOrigin, BOARD_ITEM* aDraggedItem )
{
LSET layers;
std::vector<BOARD_ITEM*> item;
if( aDraggedItem )
{
layers = aDraggedItem->GetLayerSet();
item.push_back( aDraggedItem );
}
else
layers = LSET::AllLayersMask();
return BestSnapAnchor( aOrigin, layers, item );
}
VECTOR2I GRID_HELPER::BestSnapAnchor( const VECTOR2I& aOrigin, const LSET& aLayers,
const std::vector<BOARD_ITEM*> aSkip )
{
double worldScale = m_frame->GetGalCanvas()->GetGAL()->GetWorldScale();
int snapRange = (int) ( m_snapSize / worldScale );
BOX2I bb( VECTOR2I( aOrigin.x - snapRange / 2, aOrigin.y - snapRange / 2 ), VECTOR2I( snapRange, snapRange ) );
clearAnchors();
for( BOARD_ITEM* item : queryVisible( bb, aSkip ) )
{
computeAnchors( item, aOrigin );
}
ANCHOR* nearest = nearestAnchor( aOrigin, SNAPPABLE, aLayers );
VECTOR2I nearestGrid = Align( aOrigin );
double gridDist = ( nearestGrid - aOrigin ).EuclideanNorm();
if( nearest && m_enableSnap )
{
double snapDist = nearest->Distance( aOrigin );
if( !m_enableGrid || snapDist <= gridDist )
{
m_viewSnapPoint.SetPosition( nearest->pos );
if( m_frame->GetGalCanvas()->GetView()->IsVisible( &m_viewSnapPoint ) )
m_frame->GetGalCanvas()->GetView()->Update( &m_viewSnapPoint, KIGFX::GEOMETRY);
else
m_frame->GetGalCanvas()->GetView()->SetVisible( &m_viewSnapPoint, true );
m_snapItem = nearest;
return nearest->pos;
}
}
m_snapItem = nullptr;
m_frame->GetGalCanvas()->GetView()->SetVisible( &m_viewSnapPoint, false );
return nearestGrid;
}
BOARD_ITEM* GRID_HELPER::GetSnapped( void ) const
{
if( !m_snapItem )
return nullptr;
return m_snapItem->item;
}
void GRID_HELPER::computeAnchors( BOARD_ITEM* aItem, const VECTOR2I& aRefPos )
{
VECTOR2I origin;
switch( aItem->Type() )
{
case PCB_MODULE_T:
{
MODULE* mod = static_cast<MODULE*>( aItem );
for( auto pad : mod->Pads() )
{
if( pad->GetBoundingBox().Contains( wxPoint( aRefPos.x, aRefPos.y ) ) )
{
addAnchor( pad->GetPosition(), CORNER | SNAPPABLE, pad );
break;
}
}
// if the cursor is not over a pad, then drag the module by its origin
addAnchor( mod->GetPosition(), ORIGIN | SNAPPABLE, mod );
break;
}
case PCB_PAD_T:
{
D_PAD* pad = static_cast<D_PAD*>( aItem );
addAnchor( pad->GetPosition(), CORNER | SNAPPABLE, pad );
break;
}
case PCB_MODULE_EDGE_T:
case PCB_LINE_T:
{
DRAWSEGMENT* dseg = static_cast<DRAWSEGMENT*>( aItem );
VECTOR2I start = dseg->GetStart();
VECTOR2I end = dseg->GetEnd();
switch( dseg->GetShape() )
{
case S_CIRCLE:
{
int r = ( start - end ).EuclideanNorm();
addAnchor( start, ORIGIN | SNAPPABLE, dseg );
addAnchor( start + VECTOR2I( -r, 0 ), OUTLINE | SNAPPABLE, dseg );
addAnchor( start + VECTOR2I( r, 0 ), OUTLINE | SNAPPABLE, dseg );
addAnchor( start + VECTOR2I( 0, -r ), OUTLINE | SNAPPABLE, dseg );
addAnchor( start + VECTOR2I( 0, r ), OUTLINE | SNAPPABLE, dseg );
break;
}
case S_ARC:
origin = dseg->GetCenter();
addAnchor( dseg->GetArcStart(), CORNER | SNAPPABLE, dseg );
addAnchor( dseg->GetArcEnd(), CORNER | SNAPPABLE, dseg );
addAnchor( origin, ORIGIN | SNAPPABLE, dseg );
break;
case S_RECT:
addAnchor( start, CORNER | SNAPPABLE, dseg );
addAnchor( VECTOR2I( end.x, start.y ), CORNER | SNAPPABLE, dseg );
addAnchor( VECTOR2I( start.x, end.y ), CORNER | SNAPPABLE, dseg );
addAnchor( end, CORNER | SNAPPABLE, dseg );
break;
case S_SEGMENT:
origin.x = start.x + ( start.x - end.x ) / 2;
origin.y = start.y + ( start.y - end.y ) / 2;
addAnchor( start, CORNER | SNAPPABLE, dseg );
addAnchor( end, CORNER | SNAPPABLE, dseg );
addAnchor( origin, ORIGIN, dseg );
break;
case S_POLYGON:
for( const auto& p : dseg->BuildPolyPointsList() )
addAnchor( p, CORNER | SNAPPABLE, dseg );
break;
case S_CURVE:
addAnchor( start, CORNER | SNAPPABLE, dseg );
addAnchor( end, CORNER | SNAPPABLE, dseg );
//Fallthrough
default:
origin = dseg->GetStart();
addAnchor( origin, ORIGIN | SNAPPABLE, dseg );
break;
}
break;
}
case PCB_TRACE_T:
{
TRACK* track = static_cast<TRACK*>( aItem );
VECTOR2I start = track->GetStart();
VECTOR2I end = track->GetEnd();
origin.x = start.x + ( start.x - end.x ) / 2;
origin.y = start.y + ( start.y - end.y ) / 2;
addAnchor( start, CORNER | SNAPPABLE, track );
addAnchor( end, CORNER | SNAPPABLE, track );
addAnchor( origin, ORIGIN, track);
break;
}
case PCB_MARKER_T:
case PCB_TARGET_T:
case PCB_VIA_T:
addAnchor( aItem->GetPosition(), ORIGIN | CORNER | SNAPPABLE, aItem );
break;
case PCB_ZONE_AREA_T:
{
const SHAPE_POLY_SET* outline = static_cast<const ZONE_CONTAINER*>( aItem )->Outline();
SHAPE_LINE_CHAIN lc;
lc.SetClosed( true );
for( auto iter = outline->CIterateWithHoles(); iter; iter++ )
{
addAnchor( *iter, CORNER, aItem );
lc.Append( *iter );
}
addAnchor( lc.NearestPoint( aRefPos ), OUTLINE, aItem );
break;
}
case PCB_DIMENSION_T:
{
const DIMENSION* dim = static_cast<const DIMENSION*>( aItem );
addAnchor( dim->m_crossBarF, CORNER | SNAPPABLE, aItem );
addAnchor( dim->m_crossBarO, CORNER | SNAPPABLE, aItem );
addAnchor( dim->m_featureLineGO, CORNER | SNAPPABLE, aItem );
addAnchor( dim->m_featureLineDO, CORNER | SNAPPABLE, aItem );
break;
}
case PCB_MODULE_TEXT_T:
case PCB_TEXT_T:
addAnchor( aItem->GetPosition(), ORIGIN, aItem );
break;
default:
break;
}
}
GRID_HELPER::ANCHOR* GRID_HELPER::nearestAnchor( const VECTOR2I& aPos, int aFlags, LSET aMatchLayers )
{
double minDist = std::numeric_limits<double>::max();
ANCHOR* best = NULL;
for( ANCHOR& a : m_anchors )
{
if( ( aMatchLayers & a.item->GetLayerSet() ) == 0 )
continue;
if( ( aFlags & a.flags ) != aFlags )
continue;
double dist = a.Distance( aPos );
if( dist < minDist )
{
minDist = dist;
best = &a;
}
}
return best;
}
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