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kicad/pcbnew/locate.cpp

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/*******************/
/* Locate element. */
/*******************/
#include "fctsys.h"
#include "common.h"
#include "pcbnew.h"
#include "class_board_design_settings.h"
#include "protos.h"
/* Locates a via point pX, pY
* If layer < 0 will be located via whatever layer
* If layer = 0 .. 15 Via will be located according to its type:
* - Traverse: all layers
* - = Blind between layers useful
* - Blind idem
* Entry: coord point of reference, layer
* Output: NULL if not via
* (* TRACK) address via
*/
TRACK* Locate_Via( BOARD* Pcb, const wxPoint& pos, int layer )
{
TRACK* track;
for( track = Pcb->m_Track; track; track = track->Next() )
{
if( track->Type() != TYPE_VIA )
continue;
if( track->m_Start != pos )
continue;
if( track->GetState( BUSY | IS_DELETED ) )
continue;
if( layer < 0 )
break;
if( track->IsOnLayer( layer ) )
break;
}
return track;
}
TRACK* Locate_Via_Area( TRACK* aStart, const wxPoint& pos, int layer )
{
TRACK* track;
for( track = aStart; track; track = track->Next() )
{
if( track->Type() != TYPE_VIA )
continue;
if( !track->HitTest(pos) )
continue;
if( track->GetState( BUSY | IS_DELETED ) )
continue;
if( layer < 0 )
break;
if( track->IsOnLayer( layer ) )
break;
}
return track;
}
/* Locate the pad CONNECTED to a track
* input: ptr_piste: pointer to the segment of track
* Extr = flag = START -> beginning of the test segment
* END -> end of the segment to be tested
* Returns:
* A pointer to the description of the pad if found.
* NULL pointer if pad NOT FOUND
*/
D_PAD* Locate_Pad_Connecte( BOARD* Pcb, TRACK* ptr_piste, int extr )
{
D_PAD* ptr_pad = NULL;
wxPoint ref_pos;
int masque_layer = g_TabOneLayerMask[ptr_piste->GetLayer()];
if( extr == START )
{
ref_pos = ptr_piste->m_Start;
}
else
{
ref_pos = ptr_piste->m_End;
}
for( MODULE* module = Pcb->m_Modules; module; module = module->Next() )
{
ptr_pad = Locate_Pads( module, ref_pos, masque_layer );
if( ptr_pad != NULL )
break;
}
return ptr_pad;
}
/*
* Locate a pad pointed to by the coordinates ref_pos.x, ref_pos.y
* aLayerMask is allowed layers ( bitmap mask)
* Returns:
* Pointer to a pad if found or NULL
*/
D_PAD* Locate_Any_Pad( BOARD* Pcb, const wxPoint& ref_pos, int aLayerMask )
{
D_PAD* pad = NULL;
for( MODULE* module=Pcb->m_Modules; module && ( pad == NULL ); module = module->Next() )
{
if( aLayerMask )
pad = Locate_Pads( module, ref_pos, aLayerMask );
else
pad = Locate_Pads( module, ref_pos, ALL_LAYERS );
}
return pad;
}
/* Locate the pad pointed to by the coordinate ref_pos.x,, ref_pos.y
* Input:
* - the footprint to test
* - masque_layer layer(s) (bit_masque) which must be the pad
* Returns:
* A pointer to the pad if found or NULL
*/
D_PAD* Locate_Pads( MODULE* module, const wxPoint& ref_pos, int masque_layer )
{
for( D_PAD* pt_pad = module->m_Pads; pt_pad; pt_pad = pt_pad->Next() )
{
/* ... and on the correct layer. */
if( ( pt_pad->m_Masque_Layer & masque_layer ) == 0 )
continue;
if( pt_pad->HitTest( ref_pos ) )
return pt_pad;
}
return NULL;
}
/**
* Function Locate_Prefered_Module
* locates a footprint by its bounding rectangle. If several footprints
* are possible, then the priority is: the closest on the active layer, then
* closest.
* The current mouse or cursor coordinates are grabbed from the active window
* to perform hit-testing.
* distance is calculated via manhattan distance from the center of the
* bounding rectangle to the cursor position.
*
* @param aPcb The BOARD to search within.
* @param aPosition Flag bits, tuning the search, see pcbnew.h
* @param aActiveLayer Layer to test.
* @param aVisibleOnly Search only the visible layers if true.
* @param aIgnoreLocked Ignore locked modules when true.
* @return MODULE* The best module or NULL if none.
*/
MODULE* Locate_Prefered_Module( BOARD* aPcb, const wxPoint& aPosition, int aActiveLayer,
bool aVisibleOnly, bool aIgnoreLocked )
{
MODULE* pt_module;
MODULE* module = NULL;
MODULE* Altmodule = NULL;
int min_dim = 0x7FFFFFFF;
int alt_min_dim = 0x7FFFFFFF;
int layer;
pt_module = aPcb->m_Modules;
for( ; pt_module; pt_module = (MODULE*) pt_module->Next() )
{
// is the ref point within the module's bounds?
if( !pt_module->HitTest( aPosition ) )
continue;
// if caller wants to ignore locked modules, and this one is locked, skip it.
if( aIgnoreLocked && pt_module->IsLocked() )
continue;
/* Calculate priority: the priority is given to the layer of the
* module and the copper layer if the module layer is indelible,
* adhesive copper, a layer if cmp module layer is indelible,
* adhesive component.
*/
layer = pt_module->GetLayer();
if( layer==ADHESIVE_N_BACK || layer==SILKSCREEN_N_BACK )
layer = LAYER_N_BACK;
else if( layer==ADHESIVE_N_FRONT || layer==SILKSCREEN_N_FRONT )
layer = LAYER_N_FRONT;
/* Test of minimum size to choosing the best candidate. */
int offx = pt_module->m_BoundaryBox.m_Size.x / 2 +
pt_module->m_BoundaryBox.m_Pos.x +
pt_module->m_Pos.x;
int offy = pt_module->m_BoundaryBox.m_Size.y / 2
+ pt_module->m_BoundaryBox.m_Pos.y
+ pt_module->m_Pos.y;
//off x & offy point to the middle of the box.
int dist = abs( aPosition.x - offx ) + abs( aPosition.y - offy );
//int dist = MIN(lx, ly); // to pick the smallest module (kinda
// screwy with same-sized modules -- this is bad!)
if( aActiveLayer == layer )
{
if( dist <= min_dim )
{
/* better footprint shown on the active layer */
module = pt_module;
min_dim = dist;
}
}
else if( aVisibleOnly && aPcb->IsModuleLayerVisible( layer ) )
{
if( dist <= alt_min_dim )
{
/* better footprint shown on other layers */
Altmodule = pt_module;
alt_min_dim = dist;
}
}
}
if( module )
{
return module;
}
if( Altmodule )
{
return Altmodule;
}
return NULL;
}
/*
* return true if the dist between p1 and p2 < max_dist
* Currently in test (currently rasnest algos work only if p1 == p2)
*/
inline bool IsPointsAreNear(wxPoint & p1, wxPoint & p2, int max_dist)
{
#if 0 // Do not change it: does not work
{
int dist;
dist = abs(p1.x - p2.x) + abs (p1.y - p2.y);
dist *= 7;
dist /= 10;
if ( dist < max_dist ) return true;
}
#else
if ( p1 == p2 ) return true;
#endif
return false;
}
/** Search for the track (or via) segment which is connected to the track
* segment PtRefSegm
* if extr == START, the starting track segment PtRefSegm is used to locate
* a connected segment
* if extr == END, the ending track segment PtRefSegm is used
* The test connection consider only end track segments
*
* Search is made from pt_base to pt_lim (in the track linked list)
* if pt_lim == NULL, the search is made from pt_base to the end of list
*
* In order to have a fast computation time:
* a first search is made considering only the +/- 50 next door neighbor
* of PtRefSegm.
* if no track is found : the entire list is tested
*
* @param PtRefSegm = reference segment
* @param pt_base = lower limit for search
* @param pt_lim = upper limit for search (can be NULL)
* @param extr = START or END = end of ref track segment to use in tests
*/
TRACK* Locate_Piste_Connectee( TRACK* PtRefSegm, TRACK* pt_base, TRACK* pt_lim, int extr )
{
const int NEIGHTBOUR_COUNT_MAX = 50;
TRACK* PtSegmB, * PtSegmN;
int Reflayer;
wxPoint pos_ref;
int ii;
int max_dist;
if( extr == START )
pos_ref = PtRefSegm->m_Start;
else
pos_ref = PtRefSegm->m_End;
Reflayer = PtRefSegm->ReturnMaskLayer();
PtSegmB = PtSegmN = PtRefSegm;
for( ii = 0; ii < NEIGHTBOUR_COUNT_MAX; ii++ )
{
if( (PtSegmN == NULL) && (PtSegmB == NULL) )
break;
if( PtSegmN )
{
if( PtSegmN->GetState( BUSY | IS_DELETED ) )
goto suite;
if( PtSegmN == PtRefSegm )
goto suite;
/* max_dist is the max distance between 2 track ends which
* ensure a copper continuity */
max_dist = (PtSegmN->m_Width + PtRefSegm->m_Width)/2;
if( IsPointsAreNear(pos_ref, PtSegmN->m_Start, max_dist) )
{
if( Reflayer & PtSegmN->ReturnMaskLayer() )
return PtSegmN;
}
if( IsPointsAreNear(pos_ref, PtSegmN->m_End, max_dist) )
{
if( Reflayer & PtSegmN->ReturnMaskLayer() )
return PtSegmN;
}
suite:
if( PtSegmN == pt_lim )
PtSegmN = NULL;
else
PtSegmN = PtSegmN->Next();
}
if( PtSegmB )
{
if( PtSegmB->GetState( BUSY | IS_DELETED ) )
goto suite1;
if( PtSegmB == PtRefSegm )
goto suite1;
max_dist = (PtSegmB->m_Width + PtRefSegm->m_Width)/2;
if( IsPointsAreNear(pos_ref, PtSegmB->m_Start, max_dist) )
{
if( Reflayer & PtSegmB->ReturnMaskLayer() )
return PtSegmB;
}
if( IsPointsAreNear(pos_ref, PtSegmB->m_End, max_dist) )
{
if( Reflayer & PtSegmB->ReturnMaskLayer() )
return PtSegmB;
}
suite1:
if( PtSegmB == pt_base )
PtSegmB = NULL;
else if( PtSegmB->Type() != TYPE_PCB )
PtSegmB = PtSegmB->Back();
else
PtSegmB = NULL;
}
}
/* General search. */
for( PtSegmN = pt_base; PtSegmN != NULL; PtSegmN = PtSegmN->Next() )
{
if( PtSegmN->GetState( IS_DELETED | BUSY ) )
{
if( PtSegmN == pt_lim )
break;
continue;
}
if( PtSegmN == PtRefSegm )
{
if( PtSegmN == pt_lim )
break;
continue;
}
max_dist = ( PtSegmN->m_Width + PtRefSegm->m_Width ) / 2;
if( IsPointsAreNear( pos_ref, PtSegmN->m_Start, max_dist ) )
{
if( Reflayer & PtSegmN->ReturnMaskLayer() )
return PtSegmN;
}
if( IsPointsAreNear( pos_ref, PtSegmN->m_End, max_dist ) )
{
if( Reflayer & PtSegmN->ReturnMaskLayer() )
return PtSegmN;
}
if( PtSegmN == pt_lim )
break;
}
return NULL;
}
/*
* 1 - Locate segment of track leading from the mouse.
* 2 - Locate segment of track point by point
* ref_pos.x, ref_pos.y.r
*
* The search begins to address start_adresse
*/
TRACK* Locate_Pistes( BOARD* aPcb, TRACK* start_adresse, const wxPoint& ref_pos, int MasqueLayer )
{
for( TRACK* track = start_adresse; track; track = track->Next() )
{
int layer = track->GetLayer();
if( track->GetState( BUSY | IS_DELETED ) )
{
// D( printf( "track %p is BUSY | IS_DELETED. BUSY=%d IS_DELETED=%d\n",
// track, track->GetState( BUSY ),
// track->GetState( IS_DELETED ) );)
continue;
}
if( aPcb->GetBoardDesignSettings()->IsLayerVisible( layer ) == false )
continue;
if( track->Type() == TYPE_VIA ) /* VIA encountered. */
{
if( track->HitTest( ref_pos ) )
return track;
}
else
{
if( (g_TabOneLayerMask[layer] & MasqueLayer) == 0 )
continue; /* Segments on different layers. */
if( track->HitTest( ref_pos ) )
return track;
}
}
return NULL;
}
/*
* 1 - Locate zone area by the mouse.
* 2 - Locate zone area by point
* def_pos.x, ref_pos.y.r
*
* If layer == -1, tst layer is not
*
* The search begins to address start_adresse
*/
TRACK* Locate_Zone( TRACK* start_adresse, const wxPoint& ref_pos, int layer )
{
for( TRACK* Zone = start_adresse; Zone; Zone = Zone->Next() )
{
if( (layer != -1) && (Zone->GetLayer() != layer) )
continue;
if( Zone->HitTest( ref_pos ) )
return Zone;
}
return NULL;
}
/* Find the pad center px, py,
* The layer INDICATED BY masque_layer (bitwise)
* (Runway end)
* The list of pads must already exist.
*
* Returns:
* NULL if no pad located.
* Pointer to the structure corresponding descr_pad if pad found
* (Good position and good layer).
*/
D_PAD* Fast_Locate_Pad_Connecte( BOARD* Pcb, const wxPoint& ref_pos, int masque_layer )
{
for( unsigned i=0; i<Pcb->GetPadsCount(); ++i )
{
D_PAD* pad = Pcb->m_NetInfo->GetPad(i);
if( pad->m_Pos != ref_pos )
continue;
/* Pad found, it must be on the correct layer */
if( pad->m_Masque_Layer & masque_layer )
return pad;
}
return NULL;
}
/* Locate segment with one end that coincides with the point x, y
* Data on layers by masklayer
* Research is done to address start_adr has end_adr
* If end_adr = NULL, end search list
* The segments of track marks with the flag are not IS_DELETED or taken
* into account
*/
TRACK* Fast_Locate_Piste( TRACK* start_adr, TRACK* end_adr, const wxPoint& ref_pos, int MaskLayer )
{
TRACK* PtSegm;
if( start_adr == NULL )
return NULL;
for( PtSegm = start_adr; PtSegm != NULL; PtSegm = PtSegm->Next() )
{
if( PtSegm->GetState( IS_DELETED | BUSY ) == 0 )
{
if( ref_pos == PtSegm->m_Start )
{
if( MaskLayer & PtSegm->ReturnMaskLayer() )
return PtSegm;
}
if( ref_pos == PtSegm->m_End )
{
if( MaskLayer & PtSegm->ReturnMaskLayer() )
return PtSegm;
}
}
if( PtSegm == end_adr )
break;
}
return NULL;
}
/* Locates via through the point x, y, on layer data by masklayer.
* Search is done to address start_adr has end_adr.
* If end_adr = NULL, end search list
* Vias whose parameter has the State or IS_DELETED bit BUSY = 1 are ignored
*/
TRACK* Fast_Locate_Via( TRACK* start_adr, TRACK* end_adr, const wxPoint& pos, int MaskLayer )
{
TRACK* PtSegm;
for( PtSegm = start_adr; PtSegm != NULL; PtSegm = PtSegm->Next() )
{
if( PtSegm->Type() == TYPE_VIA )
{
if( pos == PtSegm->m_Start )
{
if( PtSegm->GetState( BUSY | IS_DELETED ) == 0 )
{
if( MaskLayer & PtSegm->ReturnMaskLayer() )
return PtSegm;
}
}
}
if( PtSegm == end_adr )
break;
}
return NULL;
}
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