1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
|
/**
* @file zones_convert_to_polygons_aux_functions.cpp
*/
/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2013 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
* Copyright (C) 1992-2013 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 <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 TransformOutlinesShapeWithClearanceToPolygon
* Convert the zone filled areas polygons to polygons
* inflated (optional) by max( aClearanceValue, the zone clearance)
* and copy them in aCornerBuffer
* param aClearanceValue = the clearance around polygons
* param aAddClearance = true to add a clearance area to the polygon
* false to create the outline polygon.
*/
void ZONE_CONTAINER::TransformOutlinesShapeWithClearanceToPolygon(
SHAPE_POLY_SET& aCornerBuffer, int aMinClearanceValue, bool aUseNetClearance )
{
// Creates the zone outline polygon (with holes if any)
SHAPE_POLY_SET polybuffer;
BuildFilledSolidAreasPolygons( NULL, &polybuffer );
// add clearance to outline
int clearance = aMinClearanceValue;
if( aUseNetClearance && IsOnCopperLayer() )
{
clearance = GetClearance();
if( aMinClearanceValue > clearance )
clearance = aMinClearanceValue;
}
// Calculate the polygon with clearance
// holes are linked to the main outline, so only one polygon is created.
if( clearance )
polybuffer.Inflate( clearance, 16 );
polybuffer.Fracture();
aCornerBuffer.Append( polybuffer );
}
/**
* 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 SHAPE_POLY_SET 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( SHAPE_POLY_SET& aCornerBuffer,
BOARD* aPcb,
ZONE_CONTAINER* aZone,
double aArcCorrection,
double 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->GetDesignSettings().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 ) == PAD_ZONE_CONN_THT_THERMAL
&& pad->GetAttribute() != PAD_ATTRIB_STANDARD )
continue;
if( aZone->GetPadConnection( pad ) != PAD_ZONE_CONN_THERMAL
&& aZone->GetPadConnection( pad ) != PAD_ZONE_CONN_THT_THERMAL )
continue;
// check
if( !pad->IsOnLayer( aZone->GetLayer() ) )
continue;
if( pad->GetNetCode() != aZone->GetNetCode() )
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 += KiROUND( 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
double fAngle = pad->GetOrientation();
if( pad->GetShape() == PAD_SHAPE_CIRCLE )
{
endpoint.x = KiROUND( 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->ShapePos();
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;
}
aCornerBuffer.NewOutline();
// 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->ShapePos(); // Shift origin to position
aCornerBuffer.Append( cpos.x, cpos.y );
}
}
}
}
}
|
