123 lines
3.6 KiB
C++
123 lines
3.6 KiB
C++
#include "junction_helpers.h"
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#include <sch_line.h>
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using namespace JUNCTION_HELPERS;
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POINT_INFO JUNCTION_HELPERS::AnalyzePoint( const EE_RTREE& aItems, const VECTOR2I& aPosition,
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bool aBreakCrossings )
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{
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enum layers
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{
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WIRES = 0,
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BUSES
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};
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POINT_INFO info{};
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info.hasBusEntry = false;
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info.hasExplicitJunctionDot = false;
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info.isJunction = false;
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info.hasBusEntryToMultipleWires = false;
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bool breakLines[2] = { false };
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std::unordered_set<int> exitAngles[2];
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std::vector<const SCH_LINE*> midPointLines[2];
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// A pin at 90° still shouldn't match a line at 90° so just give pins unique numbers
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int uniqueAngle = 10000;
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for( const SCH_ITEM* item : aItems.Overlapping( aPosition ) )
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{
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if( item->GetEditFlags() & STRUCT_DELETED )
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continue;
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switch( item->Type() )
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{
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case SCH_JUNCTION_T:
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if( item->HitTest( aPosition, -1 ) )
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info.hasExplicitJunctionDot = true;
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break;
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case SCH_LINE_T:
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{
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const SCH_LINE* line = static_cast<const SCH_LINE*>( item );
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int layer;
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if( line->GetStartPoint() == line->GetEndPoint() )
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break;
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else if( line->GetLayer() == LAYER_WIRE )
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layer = WIRES;
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else if( line->GetLayer() == LAYER_BUS )
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layer = BUSES;
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else
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break;
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if( line->IsConnected( aPosition ) )
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{
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breakLines[layer] = true;
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exitAngles[layer].insert( line->GetAngleFrom( aPosition ) );
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}
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else if( line->HitTest( aPosition, -1 ) )
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{
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if( aBreakCrossings )
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breakLines[layer] = true;
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// Defer any line midpoints until we know whether or not we're breaking them
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midPointLines[layer].push_back( line );
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}
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}
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break;
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case SCH_BUS_WIRE_ENTRY_T:
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if( item->IsConnected( aPosition ) )
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{
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breakLines[BUSES] = true;
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exitAngles[BUSES].insert( uniqueAngle++ );
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breakLines[WIRES] = true;
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exitAngles[WIRES].insert( uniqueAngle++ );
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info.hasBusEntry = true;
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}
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break;
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case SCH_SYMBOL_T:
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case SCH_SHEET_T:
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if( item->IsConnected( aPosition ) )
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{
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breakLines[WIRES] = true;
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exitAngles[WIRES].insert( uniqueAngle++ );
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}
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break;
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default: break;
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}
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}
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for( int layer : { WIRES, BUSES } )
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{
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if( breakLines[layer] )
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{
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for( const SCH_LINE* line : midPointLines[layer] )
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{
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exitAngles[layer].insert( line->GetAngleFrom( aPosition ) );
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exitAngles[layer].insert( line->GetReverseAngleFrom( aPosition ) );
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}
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}
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}
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if( info.hasBusEntry )
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{
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// The bus entry and one wire is 2 wires, and the one entry is exactly one bus
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// Any more wires must be multiple wires, but any more buses means a wire
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// crossing at the bus entry root.
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info.hasBusEntryToMultipleWires =
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exitAngles[WIRES].size() > 2 && exitAngles[BUSES].size() == 1;
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}
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// Any three things of the same type is a junction of some sort
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info.isJunction = exitAngles[WIRES].size() >= 3 || exitAngles[BUSES].size() >= 3;
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return info;
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} |