221 lines
9.3 KiB
C++
221 lines
9.3 KiB
C++
/**
|
|
* @file zones_convert_to_polygons_aux_functions.cpp
|
|
*/
|
|
|
|
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
|
|
* Copyright (C) 1992-2012 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 <fctsys.h>
|
|
#include <polygons_defs.h>
|
|
#include <PolyLine.h>
|
|
#include <wxPcbStruct.h>
|
|
#include <trigo.h>
|
|
|
|
#include <class_board.h>
|
|
#include <class_module.h>
|
|
#include <class_zone.h>
|
|
|
|
#include <pcbnew.h>
|
|
#include <zones.h>
|
|
|
|
|
|
/**
|
|
* Function BuildUnconnectedThermalStubsPolygonList
|
|
* Creates a set of polygons corresponding to stubs created by thermal shapes on pads
|
|
* which are not connected to a zone (dangling bridges)
|
|
* @param aCornerBuffer = a std::vector<CPolyPt> where to store polygons
|
|
* @param aPcb = the board.
|
|
* @param aZone = a pointer to the ZONE_CONTAINER to examine.
|
|
* @param aArcCorrection = a pointer to the ZONE_CONTAINER to examine.
|
|
* @param aRoundPadThermalRotation = the rotation in 1.0 degree for thermal stubs in round pads
|
|
*/
|
|
|
|
void BuildUnconnectedThermalStubsPolygonList( std::vector<CPolyPt>& aCornerBuffer,
|
|
BOARD* aPcb,
|
|
ZONE_CONTAINER* aZone,
|
|
double aArcCorrection,
|
|
int aRoundPadThermalRotation )
|
|
{
|
|
std::vector<wxPoint> corners_buffer; // a local polygon buffer to store one stub
|
|
corners_buffer.reserve( 4 );
|
|
wxPoint ptTest[4];
|
|
|
|
int zone_clearance = aZone->GetZoneClearance();
|
|
|
|
EDA_RECT item_boundingbox;
|
|
EDA_RECT zone_boundingbox = aZone->GetBoundingBox();
|
|
int biggest_clearance = aPcb->GetBiggestClearanceValue();
|
|
biggest_clearance = std::max( biggest_clearance, zone_clearance );
|
|
zone_boundingbox.Inflate( biggest_clearance );
|
|
|
|
// half size of the pen used to draw/plot zones outlines
|
|
int pen_radius = aZone->GetMinThickness() / 2;
|
|
|
|
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
|
|
{
|
|
for( D_PAD* pad = module->Pads(); pad != NULL; pad = pad->Next() )
|
|
{
|
|
// Rejects non-standard pads with tht-only thermal reliefs
|
|
if( aZone->GetPadConnection( pad ) == THT_THERMAL
|
|
&& pad->GetAttribute() != PAD_STANDARD )
|
|
continue;
|
|
|
|
if( aZone->GetPadConnection( pad ) != THERMAL_PAD
|
|
&& aZone->GetPadConnection( pad ) != THT_THERMAL )
|
|
continue;
|
|
|
|
// check
|
|
if( !pad->IsOnLayer( aZone->GetLayer() ) )
|
|
continue;
|
|
|
|
if( pad->GetNet() != aZone->GetNet() )
|
|
continue;
|
|
|
|
// Calculate thermal bridge half width
|
|
int thermalBridgeWidth = aZone->GetThermalReliefCopperBridge( pad )
|
|
- aZone->GetMinThickness();
|
|
if( thermalBridgeWidth <= 0 )
|
|
continue;
|
|
|
|
// we need the thermal bridge half width
|
|
// with a small extra size to be sure we create a stub
|
|
// slightly larger than the actual stub
|
|
thermalBridgeWidth = ( thermalBridgeWidth + 4 ) / 2;
|
|
|
|
int thermalReliefGap = aZone->GetThermalReliefGap( pad );
|
|
|
|
item_boundingbox = pad->GetBoundingBox();
|
|
item_boundingbox.Inflate( thermalReliefGap );
|
|
if( !( item_boundingbox.Intersects( zone_boundingbox ) ) )
|
|
continue;
|
|
|
|
// Thermal bridges are like a segment from a starting point inside the pad
|
|
// to an ending point outside the pad
|
|
|
|
// calculate the ending point of the thermal pad, outside the pad
|
|
wxPoint endpoint;
|
|
endpoint.x = ( pad->GetSize().x / 2 ) + thermalReliefGap;
|
|
endpoint.y = ( pad->GetSize().y / 2 ) + thermalReliefGap;
|
|
|
|
// Calculate the starting point of the thermal stub
|
|
// inside the pad
|
|
wxPoint startpoint;
|
|
int copperThickness = aZone->GetThermalReliefCopperBridge( pad )
|
|
- aZone->GetMinThickness();
|
|
|
|
if( copperThickness < 0 )
|
|
copperThickness = 0;
|
|
|
|
// Leave a small extra size to the copper area inside to pad
|
|
copperThickness += (int)(IU_PER_MM * 0.04);
|
|
|
|
startpoint.x = std::min( pad->GetSize().x, copperThickness );
|
|
startpoint.y = std::min( pad->GetSize().y, copperThickness );
|
|
|
|
startpoint.x /= 2;
|
|
startpoint.y /= 2;
|
|
|
|
// This is a CIRCLE pad tweak
|
|
// for circle pads, the thermal stubs orientation is 45 deg
|
|
int fAngle = pad->GetOrientation();
|
|
if( pad->GetShape() == PAD_CIRCLE )
|
|
{
|
|
endpoint.x = (int) ( endpoint.x * aArcCorrection );
|
|
endpoint.y = endpoint.x;
|
|
fAngle = aRoundPadThermalRotation;
|
|
}
|
|
|
|
// contour line width has to be taken into calculation to avoid "thermal stub bleed"
|
|
endpoint.x += pen_radius;
|
|
endpoint.y += pen_radius;
|
|
// compute north, south, west and east points for zone connection.
|
|
ptTest[0] = wxPoint( 0, endpoint.y ); // lower point
|
|
ptTest[1] = wxPoint( 0, -endpoint.y ); // upper point
|
|
ptTest[2] = wxPoint( endpoint.x, 0 ); // right point
|
|
ptTest[3] = wxPoint( -endpoint.x, 0 ); // left point
|
|
|
|
// Test all sides
|
|
for( int i = 0; i < 4; i++ )
|
|
{
|
|
// rotate point
|
|
RotatePoint( &ptTest[i], fAngle );
|
|
|
|
// translate point
|
|
ptTest[i] += pad->ReturnShapePos();
|
|
|
|
if( aZone->HitTestFilledArea( ptTest[i] ) )
|
|
continue;
|
|
|
|
corners_buffer.clear();
|
|
|
|
// polygons are rectangles with width of copper bridge value
|
|
switch( i )
|
|
{
|
|
case 0: // lower stub
|
|
corners_buffer.push_back( wxPoint( -thermalBridgeWidth, endpoint.y ) );
|
|
corners_buffer.push_back( wxPoint( +thermalBridgeWidth, endpoint.y ) );
|
|
corners_buffer.push_back( wxPoint( +thermalBridgeWidth, startpoint.y ) );
|
|
corners_buffer.push_back( wxPoint( -thermalBridgeWidth, startpoint.y ) );
|
|
break;
|
|
|
|
case 1: // upper stub
|
|
corners_buffer.push_back( wxPoint( -thermalBridgeWidth, -endpoint.y ) );
|
|
corners_buffer.push_back( wxPoint( +thermalBridgeWidth, -endpoint.y ) );
|
|
corners_buffer.push_back( wxPoint( +thermalBridgeWidth, -startpoint.y ) );
|
|
corners_buffer.push_back( wxPoint( -thermalBridgeWidth, -startpoint.y ) );
|
|
break;
|
|
|
|
case 2: // right stub
|
|
corners_buffer.push_back( wxPoint( endpoint.x, -thermalBridgeWidth ) );
|
|
corners_buffer.push_back( wxPoint( endpoint.x, thermalBridgeWidth ) );
|
|
corners_buffer.push_back( wxPoint( +startpoint.x, thermalBridgeWidth ) );
|
|
corners_buffer.push_back( wxPoint( +startpoint.x, -thermalBridgeWidth ) );
|
|
break;
|
|
|
|
case 3: // left stub
|
|
corners_buffer.push_back( wxPoint( -endpoint.x, -thermalBridgeWidth ) );
|
|
corners_buffer.push_back( wxPoint( -endpoint.x, thermalBridgeWidth ) );
|
|
corners_buffer.push_back( wxPoint( -startpoint.x, thermalBridgeWidth ) );
|
|
corners_buffer.push_back( wxPoint( -startpoint.x, -thermalBridgeWidth ) );
|
|
break;
|
|
}
|
|
|
|
|
|
// add computed polygon to list
|
|
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
|
|
{
|
|
wxPoint cpos = corners_buffer[ic];
|
|
RotatePoint( &cpos, fAngle ); // Rotate according to module orientation
|
|
cpos += pad->ReturnShapePos(); // Shift origin to position
|
|
CPolyPt corner;
|
|
corner.x = cpos.x;
|
|
corner.y = cpos.y;
|
|
corner.end_contour = ( ic < (corners_buffer.size() - 1) ) ? 0 : 1;
|
|
aCornerBuffer.push_back( corner );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|