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Pcbnew: enhancements in algorithm to build the board outlines as polygon (with holes) in specctra.cpp. the polygonal description is used in specctra export but also in 3D viewer.

This commit is contained in:
unknown 2015-06-24 18:13:25 +02:00 committed by jean-pierre charras
parent 9466f19427
commit 257ee806fd
1 changed files with 83 additions and 34 deletions
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95
pcbnew/specctra_export.cpp
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@ -82,7 +82,7 @@ static const double safetyMargin = 0.1;
static unsigned close_ness( const wxPoint& aLeft, const wxPoint& aRight )
{
// Don't need an accurate distance calculation, just something
// approximating it, for relative orering.
// approximating it, for relative ordering.
return unsigned( abs( aLeft.x - aRight.x ) + abs( aLeft.y - aRight.y ) );
}
@ -104,6 +104,23 @@ inline bool close_enough( const wxPoint& aLeft, const wxPoint& aRight, unsigned
}
/**
* Function close_st
* is a local method of qualifying if either the start of end point of a segment is closest to a point.
*
* @param aReference is the reference point
* @param aFirst is the first point
* @param aSecond is the second point
* @return bool - true if the the first point is closest to the reference, otherwise false.
*/
inline bool close_st( const wxPoint& aReference, const wxPoint& aFirst, const wxPoint& aSecond )
{
// We don't use an accurate distance calculation, just something
// approximating to find the closest to the reference.
return close_ness( aReference, aFirst ) <= close_ness( aReference, aSecond );
}
// see wxPcbStruct.h
void PCB_EDIT_FRAME::ExportToSpecctra( wxCommandEvent& event )
{
@ -955,7 +972,7 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
break;
case S_ARC:
// freerouter does not yet understand arcs, so approximate
// Freerouter does not yet understand arcs, so approximate
// an arc with a series of short lines and put those
// line segments into the !same! PATH.
{
@ -1034,8 +1051,10 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
}
else
{
wxPoint startPt = wxPoint( graphic->GetEnd() );
// Polygon start point. Arbitrarily chosen end of the
// segment and build the poly from here.
wxPoint startPt = wxPoint( graphic->GetEnd() );
prevPt = graphic->GetEnd();
path->AppendPoint( mapPt( prevPt ) );
@ -1050,15 +1069,17 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
{
wxPoint nextPt;
if( !close_enough( prevPt, graphic->GetStart(), prox ) )
// Use the line segment end point furthest away from
// prevPt as we assume the other end to be ON prevPt or
// very close to it.
if( close_st( prevPt, graphic->GetStart(), graphic->GetEnd() ) )
{
wxASSERT( close_enough( prevPt, graphic->GetEnd(), prox ) );
nextPt = graphic->GetStart();
nextPt = graphic->GetEnd();
}
else
{
wxASSERT( close_enough( prevPt, graphic->GetStart(), prox ) );
nextPt = graphic->GetEnd();
nextPt = graphic->GetStart();
}
path->AppendPoint( mapPt( nextPt ) );
@ -1115,27 +1136,39 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
break;
}
if( close_enough( startPt, prevPt, prox ) ) // the polygon is closed.
break;
// Get next closest segment.
graphic = findPoint( prevPt, &items, prox );
// If there are no more close segments, check if the board
// outline polygon can be closed.
if( !graphic )
{
if( close_enough( startPt, prevPt, prox ) )
{
// Close the polygon back to start point
path->AppendPoint( mapPt( startPt ) );
}
else
{
wxString error = wxString::Format(
_( "Unable to find the next segment with an endpoint of (%s mm, %s mm).\n"
_( "Unable to find the next boundary segment with an endpoint of (%s mm, %s mm).\n"
"Edit Edge.Cuts perimeter graphics, making them contiguous polygons each." ),
GetChars( FROM_UTF8( BOARD_ITEM::FormatInternalUnits( prevPt.x ).c_str() ) ),
GetChars( FROM_UTF8( BOARD_ITEM::FormatInternalUnits( prevPt.y ).c_str() ) )
);
ThrowIOError( error );
}
break;
}
}
}
// Output the interior Edge.Cuts graphics as keepouts, using nearness metric
// for sloppy graphical items.
prox = Millimeter2iu( 0.25 );
// Output the interior Edge.Cuts graphics as keepouts, using same nearness
// metric as the board edge as otherwise we have trouble completing complex
// polygons.
prox = Millimeter2iu( 0.05 );
while( items.GetCount() )
{
@ -1155,6 +1188,9 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
}
else
{
// Polygon start point. Arbitrarily chosen end of the
// segment and build the poly from here.
wxPoint startPt( graphic->GetEnd() );
prevPt = graphic->GetEnd();
poly_ko->AppendPoint( mapPt( prevPt ) );
@ -1168,15 +1204,17 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
{
wxPoint nextPt;
if( !close_enough( prevPt, graphic->GetStart(), prox ) )
// Use the line segment end point furthest away from
// prevPt as we assume the other end to be ON prevPt or
// very close to it.
if( close_st( prevPt, graphic->GetStart(), graphic->GetEnd() ) )
{
wxASSERT( close_enough( prevPt, graphic->GetEnd(), prox ) );
nextPt = graphic->GetStart();
nextPt = graphic->GetEnd();
}
else
{
wxASSERT( close_enough( prevPt, graphic->GetStart(), prox ) );
nextPt = graphic->GetEnd();
nextPt = graphic->GetStart();
}
prevPt = nextPt;
@ -1185,7 +1223,7 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
break;
case S_ARC:
// freerouter does not yet understand arcs, so approximate
// Freerouter does not yet understand arcs, so approximate
// an arc with a series of short lines and put those
// line segments into the !same! PATH.
{
@ -1234,15 +1272,24 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
break;
}
if( close_enough( startPt, prevPt, prox ) )
break;
// Get next closest segment.
graphic = findPoint( prevPt, &items, prox );
// If there are no more close segments, check if polygon
// can be closed.
if( !graphic )
{
if( close_enough( startPt, prevPt, prox ) )
{
// Close the polygon back to start point
poly_ko->AppendPoint( mapPt( startPt ) );
}
else
{
wxString error = wxString::Format(
_( "Unable to find the next segment with an endpoint of (%s mm, %s mm).\n"
_( "Unable to find the next keepout segment with an endpoint of (%s mm, %s mm).\n"
"Edit Edge.Cuts interior graphics, making them contiguous polygons each." ),
GetChars( FROM_UTF8( BOARD_ITEM::FormatInternalUnits( prevPt.x ).c_str() ) ),
GetChars( FROM_UTF8( BOARD_ITEM::FormatInternalUnits( prevPt.y ).c_str() ) )
@ -1250,6 +1297,8 @@ void SPECCTRA_DB::fillBOUNDARY( BOARD* aBoard, BOUNDARY* boundary )
ThrowIOError( error );
}
break;
}
}
}
}