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rework on zones (continued):try to fix a filling problem with kbool: cleanup code

This commit is contained in:
charras 2009-11-16 08:13:40 +00:00
parent 537d4861ba
commit f2f4cd535a
8 changed files with 872 additions and 678 deletions
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645
pcbnew/board_items_to_polygon_shape_transform.cpp
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@ -21,16 +21,151 @@
* @param aCornerBuffer = a buffer to store the polygon
* @param aStart = the segment start point coordinate
* @param aEnd = the segment end point coordinate
* @param aWidth = the segment width
* @param aCircleToSegmentsCount = the number of segments to approximate a circle
* @param aWidth = the segment width
*/
void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
void TransformRoundedEndsSegmentToPolygon( std::vector <CPolyPt>& aCornerBuffer,
wxPoint aStart, wxPoint aEnd,
int aCircleToSegmentsCount,
int aWidth );
/** Function TransformTrackWithClearanceToPolygon
/** Function TransformArcToPolygon
* Creates a polygon from an Arc
* Convert arcs to multiple straight segments
* @param aCornerBuffer = a buffer to store the polygon
* @param aCentre = centre of the arc or circle
* @param aStart = start point of the arc, or a point on the circle
* @param aArcAngle = arc angle in 0.1 degrees. For a circle, aArcAngle = 3600
* @param aCircleToSegmentsCount = the number of segments to approximate a circle
* @param aWidth = width (thickness) of the line
*/
void TransformArcToPolygon( std::vector <CPolyPt>& aCornerBuffer,
wxPoint aCentre, wxPoint aStart, int aArcAngle,
int aCircleToSegmentsCount, int aWidth )
{
wxPoint arc_start, arc_end;
int delta = 3600 / aCircleToSegmentsCount; // rot angle in 0.1 degree
arc_end = arc_start = aStart;
if( aArcAngle != 3600 )
{
RotatePoint( &arc_end, aCentre, -aArcAngle );
}
if( aArcAngle < 0 )
{
EXCHG( arc_start, arc_end );
NEGATE( aArcAngle );
}
// Compute the ends of segments and creates poly
wxPoint curr_end = arc_start;
wxPoint curr_start = arc_start;
for( int ii = delta; ii < aArcAngle; ii += delta )
{
curr_end = arc_start;
RotatePoint( &curr_end, aCentre, -ii );
TransformRoundedEndsSegmentToPolygon( aCornerBuffer,
curr_start, curr_end, aCircleToSegmentsCount, aWidth );
curr_start = curr_end;
}
if( curr_end != arc_end )
TransformRoundedEndsSegmentToPolygon( aCornerBuffer,
curr_end, arc_end, aCircleToSegmentsCount, aWidth );
}
/** Function TEXTE_PCB::TransformShapeWithClearanceToPolygon
* Convert the track shape to a closed polygon
* Used in filling zones calculations
* Circles and arcs are approximated by segments
* @param aCornerBuffer = a buffer to store the polygon
* @param aClearanceValue = the clearance around the pad
* @param aCircleToSegmentsCount = the number of segments to approximate a circle
* @param aCorrectionFactor = the correction to apply to circles radius to keep
* clearance when the circle is approximated by segment bigger or equal
* to the real clearance value (usually near from 1.0)
*/
void TEXTE_PCB::TransformShapeWithClearanceToPolygon(
std::vector <CPolyPt>& aCornerBuffer,
int aClearanceValue,
int aCircleToSegmentsCount,
double aCorrectionFactor )
{
if( GetLength() == 0 )
return;
CPolyPt corners[4]; // Buffer of polygon corners
EDA_Rect rect = GetTextBox( -1 );
rect.Inflate( aClearanceValue, aClearanceValue );
corners[0].x = rect.GetOrigin().x;
corners[0].y = rect.GetOrigin().y;
corners[1].y = corners[0].y;
corners[1].x = rect.GetRight();
corners[2].x = corners[1].x;
corners[2].y = rect.GetBottom();
corners[3].y = corners[2].y;
corners[3].x = corners[0].x;
for( int ii = 0; ii < 4; ii++ )
{
// Rotate polygon
RotatePoint( &corners[ii].x, &corners[ii].y,
m_Pos.x, m_Pos.y,
m_Orient );
aCornerBuffer.push_back( corners[ii] );
}
aCornerBuffer.back().end_contour = true;
}
/** Function DRAWSEGMENT::TransformShapeWithClearanceToPolygon
* Convert the track shape to a closed polygon
* Used in filling zones calculations
* Circles and arcs are approximated by segments
* @param aCornerBuffer = a buffer to store the polygon
* @param aClearanceValue = the clearance around the pad
* @param aCircleToSegmentsCount = the number of segments to approximate a circle
* @param aCorrectionFactor = the correction to apply to circles radius to keep
* clearance when the circle is approxiamted by segment bigger or equal
* to the real clearance value (usually near from 1.0)
*/
void DRAWSEGMENT::TransformShapeWithClearanceToPolygon(
std::vector <CPolyPt>& aCornerBuffer,
int aClearanceValue,
int aCircleToSegmentsCount,
double aCorrectionFactor )
{
switch( m_Shape )
{
case S_CIRCLE:
TransformArcToPolygon( aCornerBuffer, m_Start, // Circle centre
m_End, 3600,
aCircleToSegmentsCount,
m_Width + (2 * aClearanceValue) );
break;
case S_ARC:
TransformArcToPolygon( aCornerBuffer, m_Start,
m_End, m_Angle,
aCircleToSegmentsCount,
m_Width + (2 * aClearanceValue) );
break;
default:
TransformRoundedEndsSegmentToPolygon(
aCornerBuffer, m_Start, m_End,
aCircleToSegmentsCount, m_Width + (2 * aClearanceValue) );
break;
}
}
/** Function TRACK::TransformShapeWithClearanceToPolygon
* Convert the track shape to a closed polygon
* Used in filling zones calculations
* Circles (vias) and arcs (ends of tracks) are approximated by segments
@ -41,7 +176,7 @@ void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
* clearance when the circle is approxiamted by segment bigger or equal
* to the real clearance value (usually near from 1.0)
*/
void TRACK::TransformTrackWithClearanceToPolygon( std::vector <wxPoint>& aCornerBuffer,
void TRACK:: TransformShapeWithClearanceToPolygon( std:: vector < CPolyPt>& aCornerBuffer,
int aClearanceValue,
int aCircleToSegmentsCount,
double aCorrectionFactor )
@ -49,7 +184,6 @@ void TRACK::TransformTrackWithClearanceToPolygon( std::vector <wxPoint>& aCorner
wxPoint corner_position;
int ii, angle;
int dx = (m_Width / 2) + aClearanceValue;
int delta = 3600 / aCircleToSegmentsCount; // rot angle in 0.1 degree
switch( Type() )
@ -59,19 +193,25 @@ void TRACK::TransformTrackWithClearanceToPolygon( std::vector <wxPoint>& aCorner
for( ii = 0; ii < aCircleToSegmentsCount; ii++ )
{
corner_position = wxPoint( dx, 0 );
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) );
RotatePoint( &corner_position.x, &corner_position.y,
(1800 / aCircleToSegmentsCount) );
angle = ii * delta;
RotatePoint( &corner_position, angle );
corner_position += m_Start;
aCornerBuffer.push_back( corner_position );
RotatePoint( &corner_position.x, &corner_position.y, angle );
corner_position.x += m_Start.x;
corner_position.y += m_Start.y;
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
aCornerBuffer.back().end_contour = true;
break;
default:
TransformRoundedEndsSegmentToPolygon( aCornerBuffer,
m_Start, m_End, aCircleToSegmentsCount,
m_Width + (2 * aClearanceValue) );
TransformRoundedEndsSegmentToPolygon(
aCornerBuffer,
m_Start, m_End,
aCircleToSegmentsCount,
m_Width + ( 2 * aClearanceValue) );
break;
}
}
@ -79,7 +219,7 @@ void TRACK::TransformTrackWithClearanceToPolygon( std::vector <wxPoint>& aCorner
/* Function TransformRoundedEndsSegmentToPolygon
*/
void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
void TransformRoundedEndsSegmentToPolygon( std::vector <CPolyPt>& aCornerBuffer,
wxPoint aStart, wxPoint aEnd,
int aCircleToSegmentsCount,
int aWidth )
@ -89,6 +229,7 @@ void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
wxPoint startp = aStart;
wxPoint corner;
int seg_len;
CPolyPt polypoint;
// normalize the position in order to have endp.x >= 0;
if( endp.x < 0 )
@ -105,12 +246,16 @@ void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
corner = wxPoint( 0, rayon );
RotatePoint( &corner, -delta_angle );
corner += startp;
aCornerBuffer.push_back( corner );
polypoint.x = corner.x;
polypoint.y = corner.y;
aCornerBuffer.push_back( polypoint );
corner = wxPoint( seg_len, rayon );
RotatePoint( &corner, -delta_angle );
corner += startp;
aCornerBuffer.push_back( corner );
polypoint.x = corner.x;
polypoint.y = corner.y;
aCornerBuffer.push_back( polypoint );
// add right rounded end:
for( int ii = delta; ii < 1800; ii += delta )
@ -120,18 +265,24 @@ void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
corner.x += seg_len;
RotatePoint( &corner, -delta_angle );
corner += startp;
aCornerBuffer.push_back( corner );
polypoint.x = corner.x;
polypoint.y = corner.y;
aCornerBuffer.push_back( polypoint );
}
corner = wxPoint( seg_len, -rayon );
RotatePoint( &corner, -delta_angle );
corner += startp;
aCornerBuffer.push_back( corner );
polypoint.x = corner.x;
polypoint.y = corner.y;
aCornerBuffer.push_back( polypoint );
corner = wxPoint( 0, -rayon );
RotatePoint( &corner, -delta_angle );
corner += startp;
aCornerBuffer.push_back( corner );
polypoint.x = corner.x;
polypoint.y = corner.y;
aCornerBuffer.push_back( polypoint );
// add left rounded end:
for( int ii = delta; ii < 1800; ii += delta )
@ -140,12 +291,16 @@ void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
RotatePoint( &corner, ii );
RotatePoint( &corner, -delta_angle );
corner += startp;
aCornerBuffer.push_back( corner );
polypoint.x = corner.x;
polypoint.y = corner.y;
aCornerBuffer.push_back( polypoint );
}
aCornerBuffer.back().end_contour = true;
}
/** function TransformPadWithClearanceToPolygon
/** function D_PAD::TransformShapeWithClearanceToPolygon
* Convert the pad shape to a closed polygon
* Used in filling zones calculations
* Circles and arcs are approximated by segments
@ -156,7 +311,7 @@ void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
* clearance when the circle is approxiamted by segment bigger or equal
* to the real clearance value (usually near from 1.0)
*/
void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBuffer,
void D_PAD:: TransformShapeWithClearanceToPolygon( std:: vector < CPolyPt>& aCornerBuffer,
int aClearanceValue,
int aCircleToSegmentsCount,
double aCorrectionFactor )
@ -180,13 +335,17 @@ void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBu
for( ii = 0; ii < aCircleToSegmentsCount; ii++ )
{
corner_position = wxPoint( dx, 0 );
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); // Half increment offset to get more space between
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) );
// Half increment offset to get more space between
angle = ii * delta;
RotatePoint( &corner_position, angle );
corner_position += PadShapePos;
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
aCornerBuffer.back().end_contour = true;
break;
case PAD_OVAL:
@ -195,31 +354,38 @@ void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBu
{
dy = (int) ( dy * aCorrectionFactor );
int angle_pg; // Polygon angle
wxPoint shape_offset = wxPoint( 0, (dy - dx) );
wxPoint shape_offset = wxPoint( 0, dy - dx );
RotatePoint( &shape_offset, angle ); // Rotating shape offset vector with component
for( ii = 0; ii < aCircleToSegmentsCount / 2 + 1; ii++ ) // Half circle end cap...
{
corner_position = wxPoint( dx, 0 ); // Coordinate translation +dx
corner_position = wxPoint( dx, 0 );
// Coordinate translation +dx
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) );
RotatePoint( &corner_position, angle );
angle_pg = ii * delta;
RotatePoint( &corner_position, angle_pg );
corner_position += PadShapePos - shape_offset;
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
for( ii = 0; ii < aCircleToSegmentsCount / 2 + 1; ii++ ) // Second half circle end cap...
{
corner_position = wxPoint( -dx, 0 ); // Coordinate translation -dx
corner_position = wxPoint( -dx, 0 );
// Coordinate translation -dx
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) );
RotatePoint( &corner_position, angle );
angle_pg = ii * delta;
RotatePoint( &corner_position, angle_pg );
corner_position += PadShapePos + shape_offset;
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
aCornerBuffer.back().end_contour = true;
break;
}
else //if( dy <= dx )
@ -237,7 +403,8 @@ void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBu
angle_pg = ii * delta;
RotatePoint( &corner_position, angle_pg );
corner_position += PadShapePos - shape_offset;
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
for( ii = 0; ii < aCircleToSegmentsCount / 2 + 1; ii++ )
@ -248,9 +415,11 @@ void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBu
angle_pg = ii * delta;
RotatePoint( &corner_position, angle_pg );
corner_position += PadShapePos + shape_offset;
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
aCornerBuffer.back().end_contour = true;
break;
}
@ -268,13 +437,20 @@ void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBu
for( int i = 0; i < aCircleToSegmentsCount / 4 + 1; i++ )
{
corner_position = wxPoint( 0, -rounding_radius );
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); // Start at half increment offset
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) );
// Start at half increment offset
angle_pg = i * delta;
RotatePoint( &corner_position, angle_pg ); // Rounding vector rotation
RotatePoint( &corner_position, angle_pg );
// Rounding vector rotation
corner_position -= psize / 2; // Rounding vector + Pad corner offset
RotatePoint( &corner_position, angle ); // Rotate according to module orientation
RotatePoint( &corner_position, angle );
// Rotate according to module orientation
corner_position += PadShapePos; // Shift origin to position
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
for( int i = 0; i < aCircleToSegmentsCount / 4 + 1; i++ )
@ -286,10 +462,13 @@ void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBu
corner_position -= wxPoint( psize.x / 2, -psize.y / 2 );
RotatePoint( &corner_position, angle );
corner_position += PadShapePos;
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
for( int i = 0; i < aCircleToSegmentsCount / 4 + 1; i++ )
for( int i = 0;
i < aCircleToSegmentsCount / 4 + 1;
i++ )
{
corner_position = wxPoint( 0, rounding_radius );
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) );
@ -298,7 +477,8 @@ void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBu
corner_position += psize / 2;
RotatePoint( &corner_position, angle );
corner_position += PadShapePos;
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
for( int i = 0; i < aCircleToSegmentsCount / 4 + 1; i++ )
@ -310,9 +490,398 @@ void D_PAD::TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBu
corner_position -= wxPoint( -psize.x / 2, psize.y / 2 );
RotatePoint( &corner_position, angle );
corner_position += PadShapePos;
aCornerBuffer.push_back( corner_position );
CPolyPt polypoint( corner_position.x, corner_position.y );
aCornerBuffer.push_back( polypoint );
}
aCornerBuffer.back().end_contour = true;
break;
}
}
/** function CreateThermalReliefPadPolygon
* Add holes around a pad to create a thermal relief
* copper thickness is min (dx/2, aCopperWitdh) or min (dy/2, aCopperWitdh)
* @param aCornerBuffer = a buffer to store the polygon
* @param aPad = the current pad used to create the thermal shape
* @param aThermalGap = gap in thermal shape
* @param aMinThicknessValue = min copper thickness allowed
* @param aCircleToSegmentsCount = the number of segments to approximate a circle
* @param aCorrectionFactor = the correction to apply to circles radius to keep
* @param aThermalRot = for rond pads the rotation of thermal stubs (450 usually for 45 deg.)
*/
/* thermal reliefs are created as 4 polygons.
* each corner of a polygon if calculated for a pad at position 0, 0, orient 0,
* and then moved and rotated acroding to the pad position and orientation
*/
/* WARNING:
* When Kbool calculates the filled areas :
* i.e when substracting holes (thermal shapes) to the full zone area
* under certains circumstances kboll drop some holes.
* These circumstances are:
* some identical holes (same thermal shape and size) are *exactly* on the same vertical line
* And
* nothing else between holes
* And
* angles less than 90 deg between 2 consecutive lines in hole outline (sometime occurs without this condition)
* And
* a hole above the identical holes
*
* In fact, it is easy to find these conditions in pad arrays.
* So to avoid this, the workaround is do not use holes outlines that include
* angles less than 90 deg between 2 consecutive lines
* this is made in round and oblong thermal reliefs
*
* Note 1: polygons are drawm using outlines witk a thickness = aMinThicknessValue
* so shapes must keep in account this outline thickness
*
* Note 2:
* Trapezoidal pads are not considered here because they are very special case
* and are used in microwave applications and they *DO NOT* have a thermal relief that change the shape
* by creating stubs and destroy their properties.
*/
void CreateThermalReliefPadPolygon( std::vector<CPolyPt>& aCornerBuffer,
D_PAD& aPad,
int aThermalGap,
int aCopperThickness,
int aMinThicknessValue,
int aCircleToSegmentsCount,
double aCorrectionFactor,
int aThermalRot )
{
wxPoint corner, corner_end;
wxPoint PadShapePos = aPad.ReturnShapePos(); /* Note: for pad having a shape offset,
* the pad position is NOT the shape position */
wxSize copper_thickness;
int dx = aPad.m_Size.x / 2;
int dy = aPad.m_Size.y / 2;
int delta = 3600 / aCircleToSegmentsCount; // rot angle in 0.1 degree
/* Keep in account the polygon outline thickness
* aThermalGap must be increased by aMinThicknessValue/2 because drawing external outline
* with a thickness of aMinThicknessValue will reduce gap by aMinThicknessValue/2
*/
aThermalGap += aMinThicknessValue / 2;
/* Keep in account the polygon outline thickness
* copper_thickness must be decreased by aMinThicknessValue because drawing outlines
* with a thickness of aMinThicknessValue will increase real thickness by aMinThicknessValue
*/
aCopperThickness -= aMinThicknessValue;
if( aCopperThickness < 0 )
aCopperThickness = 0;
copper_thickness.x = min( dx, aCopperThickness );
copper_thickness.y = min( dy, aCopperThickness );
switch( aPad.m_PadShape )
{
case PAD_CIRCLE: // Add 4 similar holes
{
/* we create 4 copper holes and put them in position 1, 2, 3 and 4
* here is the area of the rectangular pad + its thermal gap
* the 4 copper holes remove the copper in order to create the thermal gap
* 4 ------ 1
* | |
* | |
* | |
* | |
* 3 ------ 2
* holes 2, 3, 4 are the same as hole 1, rotated 90, 180, 270 deg
*/
// Build the hole pattern, for the hole in the X >0, Y > 0 plane:
// The pattern roughtly is a 90 deg arc pie
std::vector <wxPoint> corners_buffer;
// Radius of outer arcs of the shape:
int outer_radius = dx + aThermalGap; // The radius of the outer arc is pad radius + aThermalGap
// Crosspoint of thermal spoke sides, the first point of polygon buffer
corners_buffer.push_back( wxPoint( copper_thickness.x / 2, copper_thickness.y / 2 ) );
// Add an intermediate point on spoke sides, to allow a > 90 deg angle between side and first seg of arc approx
corner.x = copper_thickness.x / 2;
int y = outer_radius - (aThermalGap / 4);
corner.y = (int) sqrt( ( ( (double) y * y ) - (double) corner.x * corner.x ) );
if( aThermalRot != 0 )
corners_buffer.push_back( corner );
// calculate the starting point of the outter arc
corner.x = copper_thickness.x / 2;
double dtmp =
sqrt( ( (double) outer_radius * outer_radius ) - ( (double) corner.x * corner.x ) );
corner.y = (int) dtmp;
RotatePoint( &corner, 90 );
// calculate the ending point of the outter arc
corner_end.x = corner.y;
corner_end.y = corner.x;
// calculate intermediate points (y coordinate from corner.y to corner_end.y
while( (corner.y > corner_end.y) && (corner.x < corner_end.x) )
{
corners_buffer.push_back( corner );
RotatePoint( &corner, delta );
}
corners_buffer.push_back( corner_end );
/* add an intermediate point, to avoid angles < 90 deg between last arc approx line and radius line
*/
corner.x = corners_buffer[1].y;
corner.y = corners_buffer[1].x;
corners_buffer.push_back( corner );
// Now, add the 4 holes ( each is the pattern, rotated by 0, 90, 180 and 270 deg
// WARNING: problems with kbool if angle = 0 (in fact when angle < 200):
// bad filled polygon on some cases, when pads are on a same vertical line
// this seems a bug in kbool polygon (exists in 2.0 kbool version)
// aThermalRot = 450 (45.0 degrees orientation) seems work fine.
// aThermalRot = 0 with thermal shapes without angle < 90 deg has problems in rare circumstances
// Note: with the 2 step build ( thermal shapes added after areas are built), 0 seems work
int angle_pad = aPad.m_Orient; // Pad orientation
int th_angle = aThermalRot;
for( unsigned ihole = 0; ihole < 4; ihole++ )
{
for( unsigned ii = 0; ii < corners_buffer.size(); ii++ )
{
corner = corners_buffer[ii];
RotatePoint( &corner, th_angle + angle_pad ); // Rotate by segment angle and pad orientation
corner += PadShapePos;
aCornerBuffer.push_back( CPolyPt( corner.x, corner.y ) );
}
aCornerBuffer.back().end_contour = true;
th_angle += 900; // Note: th_angle in in 0.1 deg.
}
}
break;
case PAD_OVAL:
{
// Oval pad support along the lines of round and rectangular pads
std::vector <wxPoint> corners_buffer; // Polygon buffer as vector
int dx = (aPad.m_Size.x / 2) + aThermalGap; // Cutout radius x
int dy = (aPad.m_Size.y / 2) + aThermalGap; // Cutout radius y
wxPoint shape_offset;
// We want to calculate an oval shape with dx > dy.
// if this is not the case, exchange dx and dy, and rotate the shape 90 deg.
int supp_angle = 0;
if( dx < dy )
{
EXCHG( dx, dy );
supp_angle = 900;
EXCHG( copper_thickness.x, copper_thickness.y );
}
int deltasize = dx - dy; // = distance between shape position and the 2 demi-circle ends centre
// here we have dx > dy
// Radius of outer arcs of the shape:
int outer_radius = dy; // The radius of the outer arc is radius end + aThermalGap
// Some coordinate fiddling, depending on the shape offset direction
shape_offset = wxPoint( deltasize, 0 );
// Crosspoint of thermal spoke sides, the first point of polygon buffer
corners_buffer.push_back( wxPoint( copper_thickness.x / 2, copper_thickness.y / 2 ) );
// Arc start point calculation, the intersecting point of cutout arc and thermal spoke edge
if( copper_thickness.x > deltasize ) // If copper thickness is more than shape offset, we need to calculate arc intercept point.
{
corner.x = copper_thickness.x / 2;
corner.y =
(int) sqrt( ( (double) outer_radius * outer_radius ) -
( (double) ( corner.x - delta ) * ( corner.x - deltasize ) ) );
corner.x -= deltasize;
/* creates an intermediate point, to have a > 90 deg angle
* between the side and the first segment of arc approximation
*/
wxPoint intpoint = corner;
intpoint.y -= aThermalGap / 4;
corners_buffer.push_back( intpoint + shape_offset );
RotatePoint( &corner, 90 );
}
else
{
corner.x = copper_thickness.x / 2;
corner.y = outer_radius;
corners_buffer.push_back( corner );
corner.x = ( deltasize - copper_thickness.x ) / 2;
}
// Add an intermediate point on spoke sides, to allow a > 90 deg angle between side and first seg of arc approx
wxPoint last_corner;
last_corner.y = copper_thickness.y / 2;
int px = outer_radius - (aThermalGap / 4);
last_corner.x =
(int) sqrt( ( ( (double) px * px ) - (double) last_corner.y * last_corner.y ) );
// Arc stop point calculation, the intersecting point of cutout arc and thermal spoke edge
corner_end.y = copper_thickness.y / 2;
corner_end.x =
(int) sqrt( ( (double) outer_radius *
outer_radius ) - ( (double) corner_end.y * corner_end.y ) );
RotatePoint( &corner_end, -90 );
// calculate intermediate arc points till limit is reached
while( (corner.y > corner_end.y) && (corner.x < corner_end.x) )
{
corners_buffer.push_back( corner + shape_offset );
RotatePoint( &corner, delta );
}
//corners_buffer.push_back(corner + shape_offset); // TODO: about one mil geometry error forms somewhere.
corners_buffer.push_back( corner_end + shape_offset );
corners_buffer.push_back( last_corner + shape_offset ); // Enabling the line above shows intersection point.
/* Create 2 holes, rotated by pad rotation.
*/
int angle = aPad.m_Orient + supp_angle;
for( int irect = 0; irect < 2; irect++ )
{
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += PadShapePos;
aCornerBuffer.push_back( CPolyPt( cpos.x, cpos.y ) );
}
aCornerBuffer.back().end_contour = true;;
angle += 1800; // this is calculate hole 3
if( angle >= 3600 )
angle -= 3600;
}
// Create holes, that are the mirrored from the previous holes
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint swap = corners_buffer[ic];
swap.x = -swap.x;
corners_buffer[ic] = swap;
}
// Now add corner 4 and 2 (2 is the corner 4 rotated by 180 deg
angle = aPad.m_Orient + supp_angle;
for( int irect = 0; irect < 2; irect++ )
{
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += PadShapePos;
aCornerBuffer.push_back( CPolyPt( cpos.x, cpos.y ) );
}
aCornerBuffer.back().end_contour = true;
angle += 1800;
if( angle >= 3600 )
angle -= 3600;
}
}
break;
case PAD_RECT: // draw 4 Holes
{
/* we create 4 copper holes and put them in position 1, 2, 3 and 4
* here is the area of the rectangular pad + its thermal gap
* the 4 copper holes remove the copper in order to create the thermal gap
* 4 ------ 1
* | |
* | |
* | |
* | |
* 3 ------ 2
* hole 3 is the same as hole 1, rotated 180 deg
* hole 4 is the same as hole 2, rotated 180 deg and is the same as hole 1, mirrored
*/
// First, create a rectangular hole for position 1 :
// 2 ------- 3
// | |
// | |
// | |
// 1 -------4
// Modified rectangles with one corner rounded. TODO: merging with oval thermals and possibly round too.
std::vector <wxPoint> corners_buffer; // Polygon buffer as vector
int dx = (aPad.m_Size.x / 2) + aThermalGap; // Cutout radius x
int dy = (aPad.m_Size.y / 2) + aThermalGap; // Cutout radius y
// The first point of polygon buffer is left lower corner, second the crosspoint of thermal spoke sides,
// the third is upper right corner and the rest are rounding vertices going anticlockwise. Note the inveted Y-axis in CG.
corners_buffer.push_back( wxPoint( -dx, -(aThermalGap / 4 + copper_thickness.y / 2) ) ); // Adds small miters to zone
corners_buffer.push_back( wxPoint( -(dx - aThermalGap / 4), -copper_thickness.y / 2 ) ); // fill and spoke corner
corners_buffer.push_back( wxPoint( -copper_thickness.x / 2, -copper_thickness.y / 2 ) );
corners_buffer.push_back( wxPoint( -copper_thickness.x / 2, -(dy - aThermalGap / 4) ) );
corners_buffer.push_back( wxPoint( -(aThermalGap / 4 + copper_thickness.x / 2), -dy ) );
int angle = aPad.m_Orient;
int rounding_radius = (int) ( aThermalGap * aCorrectionFactor ); // Corner rounding radius
int angle_pg; // Polygon increment angle
for( int i = 0; i < aCircleToSegmentsCount / 4 + 1; i++ )
{
wxPoint corner_position = wxPoint( 0, -rounding_radius );
RotatePoint( &corner_position, 1800 / aCircleToSegmentsCount ); // Start at half increment offset
angle_pg = i * delta;
RotatePoint( &corner_position, angle_pg ); // Rounding vector rotation
corner_position -= aPad.m_Size / 2; // Rounding vector + Pad corner offset
corners_buffer.push_back( wxPoint( corner_position.x, corner_position.y ) );
}
for( int irect = 0; irect < 2; irect++ )
{
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle ); // Rotate according to module orientation
cpos += PadShapePos; // Shift origin to position
aCornerBuffer.push_back( CPolyPt( cpos.x, cpos.y ) );
}
aCornerBuffer.back().end_contour = true;
angle += 1800; // this is calculate hole 3
if( angle >= 3600 )
angle -= 3600;
}
// Create holes, that are the mirrored from the previous holes
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint swap = corners_buffer[ic];
swap.x = -swap.x;
corners_buffer[ic] = swap;
}
// Now add corner 4 and 2 (2 is the corner 4 rotated by 180 deg
for( int irect = 0; irect < 2; irect++ )
{
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += PadShapePos;
aCornerBuffer.push_back( CPolyPt( cpos.x, cpos.y ) );
}
aCornerBuffer.back().end_contour = true;
angle += 1800;
if( angle >= 3600 )
angle -= 3600;
}
break;
}
}
}

29
pcbnew/class_drawsegment.h
View File

@ -4,6 +4,7 @@
#ifndef CLASS_DRAWSEGMENT_H
#define CLASS_DRAWSEGMENT_H
#include "polyline.h"
class DRAWSEGMENT : public BOARD_ITEM
{
@ -116,36 +117,56 @@ public:
return hypot( delta.x, delta.y );
}
/**
* Function Move
* move this object.
* @param const wxPoint& aMoveVector - the move vector for this object.
*/
virtual void Move(const wxPoint& aMoveVector)
virtual void Move( const wxPoint& aMoveVector )
{
m_Start += aMoveVector;
m_End += aMoveVector;
}
/**
* Function Rotate
* Rotate this object.
* @param const wxPoint& aRotCentre - the rotation point.
* @param aAngle - the rotation angle in 0.1 degree.
*/
virtual void Rotate(const wxPoint& aRotCentre, int aAngle);
virtual void Rotate( const wxPoint& aRotCentre, int aAngle );
/**
* Function Flip
* Flip this object, i.e. change the board side for this object
* @param const wxPoint& aCentre - the rotation point.
*/
virtual void Flip(const wxPoint& aCentre );
virtual void Flip( const wxPoint& aCentre );
/** Function TransformShapeWithClearanceToPolygon
* Convert the track shape to a closed polygon
* Used in filling zones calculations
* Circles and arcs are approximated by segments
* @param aCornerBuffer = a buffer to store the polygon
* @param aClearanceValue = the clearance around the pad
* @param aCircleToSegmentsCount = the number of segments to approximate a circle
* @param aCorrectionFactor = the correction to apply to circles radius to keep
* clearance when the circle is approxiamted by segment bigger or equal
* to the real clearance value (usually near from 1.0)
*/
void TransformShapeWithClearanceToPolygon(
std::vector <CPolyPt>& aCornerBuffer,
int aClearanceValue,
int
aCircleToSegmentsCount,
double aCorrectionFactor );
#if defined(DEBUG)
void Show( int nestLevel, std::ostream& os );
#endif
#endif
};

5
pcbnew/class_pad.h
View File

@ -5,6 +5,7 @@
class Pcb3D_GLCanvas;
#include "pad_shapes.h"
#include "polyline.h"
/* Default layers used for pads, according to the pad type.
* this is default values only, they can be changed for a given pad
@ -141,7 +142,7 @@ public:
m_Pos = aPos;
}
/** function TransformPadWithClearanceToPolygon
/** function TransformShapeWithClearanceToPolygon
* Convert the pad shape to a closed polygon
* Used in filling zones calculations
* Circles and arcs are approximated by segments
@ -152,7 +153,7 @@ public:
* clearance when the circle is approxiamted by segment bigger or equal
* to the real clearance value (usually near from 1.0)
*/
void TransformPadWithClearanceToPolygon( std::vector <wxPoint>& aCornerBuffer,
void TransformShapeWithClearanceToPolygon( std::vector <CPolyPt>& aCornerBuffer,
int aClearanceValue, int aCircleToSegmentsCount, double aCorrectionFactor );
/**

18
pcbnew/class_pcb_text.h
View File

@ -5,6 +5,7 @@
#define CLASS_PCB_TEXT_H
#include "base_struct.h"
#include "polyline.h"
class TEXTE_PCB : public BOARD_ITEM, public EDA_TextStruct
{
@ -110,6 +111,23 @@ public:
return wxT("PTEXT");
}
/** Function TransformShapeWithClearanceToPolygon
* Convert the track shape to a closed polygon
* Used in filling zones calculations
* Circles and arcs are approximated by segments
* @param aCornerBuffer = a buffer to store the polygon
* @param aClearanceValue = the clearance around the pad
* @param aCircleToSegmentsCount = the number of segments to approximate a circle
* @param aCorrectionFactor = the correction to apply to circles radius to keep
* clearance when the circle is approximated by segment bigger or equal
* to the real clearance value (usually near from 1.0)
*/
void TransformShapeWithClearanceToPolygon(
std::vector <CPolyPt>& aCornerBuffer,
int aClearanceValue,
int aCircleToSegmentsCount,
double aCorrectionFactor );
#if defined(DEBUG)
/**
* Function Show

5
pcbnew/class_track.h
View File

@ -6,6 +6,7 @@
#define CLASS_TRACK_H
#include "base_struct.h"
#include "polyline.h"
// Via attributes (m_Shape parmeter)
@ -148,7 +149,7 @@ public:
/* divers */
int Shape() const { return m_Shape & 0xFF; }
/** Function TransformTrackWithClearanceToPolygon
/** Function TransformShapeWithClearanceToPolygon
* Convert the track shape to a closed polygon
* Used in filling zones calculations
* Circles (vias) and arcs (ends of tracks) are approximated by segments
@ -159,7 +160,7 @@ public:
* clearance when the circle is approxiamted by segment bigger or equal
* to the real clearance value (usually near from 1.0)
*/
void TransformTrackWithClearanceToPolygon( std::vector <wxPoint>& aCornerBuffer,
void TransformShapeWithClearanceToPolygon( std::vector <CPolyPt>& aCornerBuffer,
int aClearanceValue,
int aCircleToSegmentsCount,
double aCorrectionFactor );

93
pcbnew/debug_kbool_key_file_fct.cpp
View File

@ -14,9 +14,15 @@
#if defined (CREATE_KBOOL_KEY_FILES) || (CREATE_KBOOL_KEY_FILES_FIRST_PASS)
// Helper class to handle a coordinate
struct kfcoord
{
int x, y;
};
static FILE* kdebugFile;
static char sDate_Time[256];
static vector <kfcoord> s_EntityCoordinates;
void CreateKeyFile()
{
@ -48,6 +54,8 @@ void CreateKeyFile()
{
wxMessageBox( wxT( "CreateKeyFile() cannot create output file" ) );
}
s_EntityCoordinates.clear();
}
@ -58,11 +66,11 @@ void CloseKeyFile()
fprintf( kdebugFile, "\nENDLIB;\n" );
fclose( kdebugFile );
}
s_EntityCoordinates.clear();
}
const char* sCurrEntityName = NULL;
static int s_count;
void OpenKeyFileEntity( const char* aName )
{
@ -74,7 +82,7 @@ void OpenKeyFileEntity( const char* aName )
fprintf( kdebugFile, "STRNAME %s;\n", aName );
}
sCurrEntityName = aName;
s_count = 0;
s_EntityCoordinates.clear();
}
@ -84,20 +92,45 @@ void CloseKeyFileEntity()
fprintf( kdebugFile, "\nENDSTR %s;\n", sCurrEntityName );
}
void StartKeyFilePolygon(int aCornersCount, int aLayer)
/* start a polygon entity in key file
*/
void StartKeyFilePolygon( int aLayer)
{
s_EntityCoordinates.clear();
fprintf( kdebugFile, "\nBOUNDARY; LAYER %d; DATATYPE 0;\n", aLayer );
fprintf( kdebugFile, " XY %d;\n", aCornersCount );
s_count = 0;
}
void EndKeyFileElement()
/* add a polygon corner to the current polygon entity in key file
*/
void AddKeyFilePointXY( int aXcoord, int aYcoord)
{
if ( s_count == 1 )
fprintf( kdebugFile, "\n");
fprintf( kdebugFile, "\nENDEL;\n" );
s_count = 0;
kfcoord coord;
coord.x = aXcoord;
coord.y = aYcoord;
s_EntityCoordinates.push_back( coord );
}
/* Close a polygon entity in key file
* write the entire polygon data to the file
*/
void EndKeyFilePolygon()
{
// Polygon must be closed: test for that and close it if needed
if( s_EntityCoordinates.size() )
{
if( s_EntityCoordinates.back().x != s_EntityCoordinates[0].x
|| s_EntityCoordinates.back().y != s_EntityCoordinates[0].y )
s_EntityCoordinates.push_back( s_EntityCoordinates[0] );
}
fprintf( kdebugFile, " XY %d;\n", s_EntityCoordinates.size() );
for( unsigned ii = 0; ii < s_EntityCoordinates.size(); ii ++ )
fprintf( kdebugFile, " X %d; Y %d;\n",
s_EntityCoordinates[ii].x, s_EntityCoordinates[ii].y );
fprintf( kdebugFile, "ENDEL;\n" );
s_EntityCoordinates.clear();
}
void CopyPolygonsFromFilledPolysListToKeyFile( ZONE_CONTAINER* aZone, int aLayer )
@ -106,30 +139,15 @@ void CopyPolygonsFromFilledPolysListToKeyFile( ZONE_CONTAINER* aZone, int aLayer
return;
unsigned corners_count = aZone->m_FilledPolysList.size();
int count = 0;
unsigned ic = 0;
CPolyPt* corner;
while( ic < corners_count )
{
// Count corners:
count = 0;
for( unsigned ii = ic; ii < corners_count; ii++ )
{
corner = &aZone->m_FilledPolysList[ii];
count++;
if( corner->end_contour )
break;
}
// write corners:
StartKeyFilePolygon( count+1, aLayer );
corner = &aZone->m_FilledPolysList[ic];
int startpointX = corner->x;
int startpointY = corner->y;
// write polygon:
StartKeyFilePolygon( aLayer );
for( ; ic < corners_count; ic++ )
{
corner = &aZone->m_FilledPolysList[ic];
CPolyPt* corner = &aZone->m_FilledPolysList[ic];
AddKeyFilePointXY( corner->x, corner->y );
if( corner->end_contour )
{
@ -137,21 +155,8 @@ void CopyPolygonsFromFilledPolysListToKeyFile( ZONE_CONTAINER* aZone, int aLayer
break;
}
}
// Close polygon:
AddKeyFilePointXY( startpointX, startpointY );
EndKeyFileElement();
EndKeyFilePolygon();
}
}
void AddKeyFilePointXY( int aXcoord, int aYcoord)
{
if ( s_count >= 2 )
{
s_count = 0;
fprintf( kdebugFile, "\n");
}
fprintf( kdebugFile, " X %d; Y %d;", aXcoord, aYcoord );
s_count ++;
}
#endif

4
pcbnew/debug_kbool_key_file_fct.h
View File

@ -38,9 +38,9 @@ void CloseKeyFileEntity();
/* polygon creations:
*/
void CopyPolygonsFromFilledPolysListToKeyFile( ZONE_CONTAINER* aZone, int aLayer);
void StartKeyFilePolygon(int aCornersCount, int aLayer);
void StartKeyFilePolygon( int aLayer);
void AddKeyFilePointXY( int aXcoord, int aYcoord);
void EndKeyFileElement();
void EndKeyFilePolygon();
#endif // CREATE_KBOOL_KEY_FILES

639
pcbnew/zones_convert_brd_items_to_polygons.cpp
View File

@ -51,14 +51,20 @@
extern void Test_For_Copper_Island_And_Remove( BOARD* aPcb,
ZONE_CONTAINER* aZone_container );
extern void TransformRoundedEndsSegmentToPolygon( std::vector <wxPoint>& aCornerBuffer,
extern void TransformRoundedEndsSegmentToPolygon( std::vector <CPolyPt>& aCornerBuffer,
wxPoint aStart, wxPoint aEnd,
int aCircleToSegmentsCount,
int aWidth );
#ifdef CREATE_KBOOL_KEY_FILES
bool s_GenDataForKbool = false;
#endif
void CreateThermalReliefPadPolygon( std::vector<CPolyPt>& aCornerBuffer,
D_PAD& aPad,
int aThermalGap,
int aCopperThickness,
int aMinThicknessValue,
int aCircleToSegmentsCount,
double aCorrectionFactor,
int aThermalRot );
// Local Functions:
#ifdef USE_STUBS_FOR_THERMAL
@ -72,7 +78,7 @@ void CreateStubsForThermalShapes( BOARD* aPcb, ZONE_CONTAINER* aZone_cont
void AddTrackWithClearancePolygon( Bool_Engine* aBooleng,
TRACK& aTrack, int aClearanceValue );
void AddPadWithClearancePolygon( Bool_Engine* aBooleng, D_PAD& aPad, int aClearanceValue );
void AddThermalReliefPadPolygon( Bool_Engine* aBooleng,
int AddThermalReliefPadPolygon( Bool_Engine* aBooleng,
D_PAD& aPad,
int aThermalGap,
int aCopperThickness, int aMinThicknessValue );
@ -80,15 +86,6 @@ void AddRoundedEndsSegmentPolygon( Bool_Engine* aBooleng,
wxPoint aStart, wxPoint aEnd,
int aWidth );
void AddTextBoxWithClearancePolygon( Bool_Engine* aBooleng,
TEXTE_PCB* aText, int aClearanceValue );
static void AddRingPolygon( Bool_Engine* aBooleng,
wxPoint aCentre,
wxPoint aStart,
int aArcAngle,
int aWidth );
// Local Variables:
/* how many segments are used to create a polygon from a circle: */
static int s_CircleToSegmentsCount = 16; /* default value. the real value will be changed to 32
@ -300,47 +297,67 @@ void ZONE_CONTAINER::AddClearanceAreasPolygonsToPolysList( BOARD* aPcb )
if( item->GetLayer() != GetLayer() && item->GetLayer() != EDGE_N )
continue;
static std::vector <CPolyPt> cornerBuffer;
cornerBuffer.clear();
switch( item->Type() )
{
case TYPE_DRAWSEGMENT:
switch( ( (DRAWSEGMENT*) item )->m_Shape )
{
case S_CIRCLE:
AddRingPolygon( booleng, ( (DRAWSEGMENT*) item )->m_Start, // Circle centre
( (DRAWSEGMENT*) item )->m_End, 3600,
( (DRAWSEGMENT*) item )->m_Width + (2 * m_ZoneClearance) );
have_poly_to_substract = true;
( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon(
cornerBuffer,
m_ZoneClearance,
s_CircleToSegmentsCount,
s_Correction );
break;
case S_ARC:
AddRingPolygon( booleng, ( (DRAWSEGMENT*) item )->m_Start, // Arc centre
( (DRAWSEGMENT*) item )->m_End,
( (DRAWSEGMENT*) item )->m_Angle,
( (DRAWSEGMENT*) item )->m_Width + (2 * m_ZoneClearance) );
have_poly_to_substract = true;
case TYPE_TEXTE:
( (TEXTE_PCB*) item )->TransformShapeWithClearanceToPolygon(
cornerBuffer,
m_ZoneClearance,
s_CircleToSegmentsCount,
s_Correction );
break;
default:
AddRoundedEndsSegmentPolygon( booleng,
( (DRAWSEGMENT*) item )->m_Start,
( (DRAWSEGMENT*) item )->m_End,
( (DRAWSEGMENT*) item )->m_Width +
(2 * m_ZoneClearance) );
have_poly_to_substract = true;
break;
}
break;
if( cornerBuffer.size() == 0 )
continue;
case TYPE_TEXTE:
AddTextBoxWithClearancePolygon( booleng, (TEXTE_PCB*) item, m_ZoneClearance );
// cornerBuffer can contain more than one polygon,
// so read cornerBuffer and verify if there is a end of polygon corner:
for( unsigned icnt = 0; icnt < cornerBuffer.size(); )
{
booleng->StartPolygonAdd( GROUP_B );
{
have_poly_to_substract = true;
unsigned ii;
for( ii = icnt; ii < cornerBuffer.size(); ii++ )
{
booleng->AddPoint( cornerBuffer[ii].x, cornerBuffer[ii].y );
if( cornerBuffer[ii].end_contour )
break;
}
default:
booleng->EndPolygonAdd();
#ifdef CREATE_KBOOL_KEY_FILES_FIRST_PASS
StartKeyFilePolygon( 1 );
for( ii = icnt; ii < cornerBuffer.size(); ii++ )
{
AddKeyFilePointXY( cornerBuffer[ii].x, cornerBuffer[ii].y );
if( cornerBuffer[ii].end_contour )
break;
}
EndKeyFilePolygon();
#endif
icnt = ii + 1;
}
}
}
#ifdef CREATE_KBOOL_KEY_FILES_FIRST_PASS
@ -417,11 +434,11 @@ void ZONE_CONTAINER::AddClearanceAreasPolygonsToPolysList( BOARD* aPcb )
item_boundingbox.Inflate( m_ThermalReliefGapValue, m_ThermalReliefGapValue );
if( item_boundingbox.Intersects( zone_boundingbox ) )
{
have_poly_to_substract = true;
AddThermalReliefPadPolygon( booleng, *pad,
if( AddThermalReliefPadPolygon( booleng, *pad,
m_ThermalReliefGapValue,
m_ThermalReliefCopperBridgeValue,
m_ZoneMinThickness );
m_ZoneMinThickness ) )
have_poly_to_substract = true;
}
}
}
@ -613,11 +630,11 @@ void ZONE_CONTAINER::AddClearanceAreasPolygonsToPolysList( BOARD* aPcb )
void AddPadWithClearancePolygon( Bool_Engine* aBooleng,
D_PAD& aPad, int aClearanceValue )
{
static std::vector <wxPoint> cornerBuffer;
static std::vector <CPolyPt> cornerBuffer;
if( aBooleng->StartPolygonAdd( GROUP_B ) == 0 )
return;
cornerBuffer.clear();
aPad.TransformPadWithClearanceToPolygon( cornerBuffer,
aPad.TransformShapeWithClearanceToPolygon( cornerBuffer,
aClearanceValue,
s_CircleToSegmentsCount,
s_Correction );
@ -628,13 +645,11 @@ void AddPadWithClearancePolygon( Bool_Engine* aBooleng,
aBooleng->EndPolygonAdd();
#ifdef CREATE_KBOOL_KEY_FILES_FIRST_PASS
StartKeyFilePolygon( cornerBuffer.size() + 1, 1 );
StartKeyFilePolygon( 1 );
for( unsigned ii = 0; ii < cornerBuffer.size(); ii++ )
AddKeyFilePointXY( cornerBuffer[ii].x, cornerBuffer[ii].y );
// Close polygon
AddKeyFilePointXY( cornerBuffer[0].x, cornerBuffer[0].y );
EndKeyFileElement();
EndKeyFilePolygon();
#endif
}
@ -642,6 +657,7 @@ void AddPadWithClearancePolygon( Bool_Engine* aBooleng,
/** function CreateStubsForThermalShapes()
* Only for testing the thermal shapes by stubs purposes
* Do not use for working pcbnew versions
* This is just for kbool test only
*/
void CreateStubsForThermalShapes( BOARD* aPcb, ZONE_CONTAINER* aZone_container,
int aThermalGap,
@ -658,9 +674,6 @@ void CreateStubsForThermalShapes( BOARD* aPcb, ZONE_CONTAINER* aZone_cont
if( aCopperThickness <= aMinThicknessValue )
return;
#ifdef CREATE_KBOOL_KEY_FILES
s_GenDataForKbool = true;
#endif
for( MODULE* module = aPcb->m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->m_Pads; pad != NULL; pad = pad->Next() )
@ -737,9 +750,6 @@ void CreateStubsForThermalShapes( BOARD* aPcb, ZONE_CONTAINER* aZone_cont
}
}
#ifdef CREATE_KBOOL_KEY_FILES
s_GenDataForKbool = false;
#endif
if( have_poly_to_add )
{
/* Add the main corrected polygon (i.e. the filled area using only one outline)
@ -774,404 +784,60 @@ void CreateStubsForThermalShapes( BOARD* aPcb, ZONE_CONTAINER* aZone_cont
* When Kbool calculates the filled areas :
* i.e when substracting holes (thermal shapes) to the full zone area
* under certains circumstances kboll drop some holes.
* These circumstances are:
* some identical holes (same thermal shape and size) are *exactly* on the same vertical line
* And
* nothing else between holes
* And
* angles less than 90 deg between 2 consecutive lines in hole outline (sometime occurs without this condition)
* And
* a hole above the identical holes
*
* In fact, it is easy to find these conditions in pad arrays.
* So to avoid this, the workaround is do not use holes outlines that include
* angles less than 90 deg between 2 consecutive lines
* this is made in round and oblong thermal reliefs
*
* Note 1: polygons are drawm using outlines witk a thickness = aMinThicknessValue
* so shapes must keep in account this outline thickness
*
* Note 2:
* Trapezoidal pads are not considered here because they are very special case
* and are used in microwave applications and they *DO NOT* have a thermal relief that change the shape
* by creating stubs and destroy their properties.
* see CreateThermalReliefPadPolygon().
*/
void AddThermalReliefPadPolygon( Bool_Engine* aBooleng,
int AddThermalReliefPadPolygon( Bool_Engine* aBooleng,
D_PAD& aPad,
int aThermalGap,
int aCopperThickness, int aMinThicknessValue )
{
wxPoint corner, corner_end;
wxPoint PadShapePos = aPad.ReturnShapePos(); /* Note: for pad having a shape offset,
* the pad position is NOT the shape position */
int angle = 0;
wxSize copper_thickness;
int dx = aPad.m_Size.x / 2;
int dy = aPad.m_Size.y / 2;
static std::vector <CPolyPt> cornerBuffer;
cornerBuffer.clear();
int delta = 3600 / s_CircleToSegmentsCount; // rot angle in 0.1 degree
/* Keep in account the polygon outline thickness
* aThermalGap must be increased by aMinThicknessValue/2 because drawing external outline
* with a thickness of aMinThicknessValue will reduce gap by aMinThicknessValue/2
*/
aThermalGap += aMinThicknessValue / 2;
/* Keep in account the polygon outline thickness
* copper_thickness must be decreased by aMinThicknessValue because drawing outlines
* with a thickness of aMinThicknessValue will increase real thickness by aMinThicknessValue
*/
aCopperThickness -= aMinThicknessValue;
if( aCopperThickness < 0 )
aCopperThickness = 0;
copper_thickness.x = min( dx, aCopperThickness );
copper_thickness.y = min( dy, aCopperThickness );
switch( aPad.m_PadShape )
{
case PAD_CIRCLE: // Add 4 similar holes
{
/* we create 4 copper holes and put them in position 1, 2, 3 and 4
* here is the area of the rectangular pad + its thermal gap
* the 4 copper holes remove the copper in order to create the thermal gap
* 4 ------ 1
* | |
* | |
* | |
* | |
* 3 ------ 2
* holes 2, 3, 4 are the same as hole 1, rotated 90, 180, 270 deg
*/
// Build the hole pattern, for the hole in the X >0, Y > 0 plane:
// The pattern roughtly is a 90 deg arc pie
std::vector <wxPoint> corners_buffer;
// Radius of outer arcs of the shape:
int outer_radius = dx + aThermalGap; // The radius of the outer arc is pad radius + aThermalGap
// Crosspoint of thermal spoke sides, the first point of polygon buffer
corners_buffer.push_back( wxPoint( copper_thickness.x / 2, copper_thickness.y / 2 ) );
// Add an intermediate point on spoke sides, to allow a > 90 deg angle between side and first seg of arc approx
corner.x = copper_thickness.x / 2;
int y = outer_radius - (aThermalGap / 4);
corner.y = (int) sqrt( ( ( (double) y * y ) - (double) corner.x * corner.x ) );
#ifndef CREATE_KBOOL_KEY_FILES_WITH_0_DEG
corners_buffer.push_back( corner );
#endif
// calculate the starting point of the outter arc
corner.x = copper_thickness.x / 2;
double dtmp =
sqrt( ( (double) outer_radius * outer_radius ) - ( (double) corner.x * corner.x ) );
corner.y = (int) dtmp;
RotatePoint( &corner, 90 );
// calculate the ending point of the outter arc
corner_end.x = corner.y;
corner_end.y = corner.x;
// calculate intermediate points (y coordinate from corner.y to corner_end.y
while( (corner.y > corner_end.y) && (corner.x < corner_end.x) )
{
corners_buffer.push_back( corner );
RotatePoint( &corner, delta );
}
corners_buffer.push_back( corner_end );
/* add an intermediate point, to avoid angles < 90 deg between last arc approx line and radius line
*/
corner.x = corners_buffer[1].y;
corner.y = corners_buffer[1].x;
corners_buffer.push_back( corner );
// Now, add the 4 holes ( each is the pattern, rotated by 0, 90, 180 and 270 deg
// WARNING: problems with kbool if angle = 0 (in fact when angle < 200):
// bad filled polygon on some cases, when pads are on a same vertical line
// this seems a bug in kbool polygon (exists in 2.0 kbool version)
// angle = 450 (45.0 degrees orientation) seems work fine.
// angle = 0 with thermal shapes without angle < 90 deg has problems in rare circumstances
// Note: with the 2 step build ( thermal shapes added after areas are built), 0 seems work
int polycount = 0;
int thermalRot = 450;
#ifdef CREATE_KBOOL_KEY_FILES_WITH_0_DEG
angle = 0;
#else
angle = 450;
#endif
int angle_pad = aPad.m_Orient; // Pad orientation
for( unsigned ihole = 0; ihole < 4; ihole++ )
{
if( aBooleng->StartPolygonAdd( GROUP_B ) )
{
#ifdef CREATE_KBOOL_KEY_FILES
StartKeyFilePolygon( corners_buffer.size() + 1, 1 );
#endif
for( unsigned ii = 0; ii < corners_buffer.size(); ii++ )
{
corner = corners_buffer[ii];
RotatePoint( &corner, angle + angle_pad ); // Rotate by segment angle and pad orientation
corner += PadShapePos;
aBooleng->AddPoint( corner.x, corner.y );
#ifdef CREATE_KBOOL_KEY_FILES
AddKeyFilePointXY( corner.x, corner.y );
#endif
}
#ifdef CREATE_KBOOL_KEY_FILES
// Close polygon
corner = corners_buffer[0];
RotatePoint( &corner, angle + angle_pad ); // Rotate by segment angle and pad orientation
corner += PadShapePos;
AddKeyFilePointXY( corner.x, corner.y );
thermalRot = 0;
#endif
aBooleng->EndPolygonAdd();
#ifdef CREATE_KBOOL_KEY_FILES
EndKeyFileElement();
#endif
angle += 900; // Note: angle in in 0.1 deg.
}
}
}
break;
CreateThermalReliefPadPolygon( cornerBuffer,
aPad, aThermalGap, aCopperThickness,
aMinThicknessValue,
s_CircleToSegmentsCount,
s_Correction, thermalRot );
case PAD_OVAL:
// cornerBuffer can contain more than one polygon,
// so read cornerBuffer and verify if there is a end of polygon corner:
for( unsigned icnt = 0; icnt < cornerBuffer.size(); )
{
// Oval pad support along the lines of round and rectangular pads
std::vector <wxPoint> corners_buffer; // Polygon buffer as vector
int dx = (aPad.m_Size.x / 2) + aThermalGap; // Cutout radius x
int dy = (aPad.m_Size.y / 2) + aThermalGap; // Cutout radius y
wxPoint shape_offset;
// We want to calculate an oval shape with dx > dy.
// if this is not the case, exchange dx and dy, and rotate the shape 90 deg.
int supp_angle = 0;
if( dx < dy )
aBooleng->StartPolygonAdd( GROUP_B );
polycount++;
unsigned ii;
for( ii = icnt; ii < cornerBuffer.size(); ii++ )
{
EXCHG( dx, dy );
supp_angle = 900;
EXCHG( copper_thickness.x, copper_thickness.y );
}
int deltasize = dx - dy; // = distance between shape position and the 2 demi-circle ends centre
// here we have dx > dy
// Radius of outer arcs of the shape:
int outer_radius = dy; // The radius of the outer arc is radius end + aThermalGap
// Some coordinate fiddling, depending on the shape offset direction
shape_offset = wxPoint( deltasize, 0 );
// Crosspoint of thermal spoke sides, the first point of polygon buffer
corners_buffer.push_back( wxPoint( copper_thickness.x / 2, copper_thickness.y / 2 ) );
// Arc start point calculation, the intersecting point of cutout arc and thermal spoke edge
if( copper_thickness.x > deltasize ) // If copper thickness is more than shape offset, we need to calculate arc intercept point.
{
corner.x = copper_thickness.x / 2;
corner.y =
(int) sqrt( ( (double) outer_radius * outer_radius ) -
( (double) ( corner.x - delta ) * ( corner.x - deltasize ) ) );
corner.x -= deltasize;
/* creates an intermediate point, to have a > 90 deg angle
* between the side and the first segment of arc approximation
*/
wxPoint intpoint = corner;
intpoint.y -= aThermalGap / 4;
corners_buffer.push_back( intpoint + shape_offset );
RotatePoint( &corner, 90 );
}
else
{
corner.x = copper_thickness.x / 2;
corner.y = outer_radius;
corners_buffer.push_back( corner );
corner.x = ( deltasize - copper_thickness.x ) / 2;
}
// Add an intermediate point on spoke sides, to allow a > 90 deg angle between side and first seg of arc approx
wxPoint last_corner;
last_corner.y = copper_thickness.y / 2;
int px = outer_radius - (aThermalGap / 4);
last_corner.x =
(int) sqrt( ( ( (double) px * px ) - (double) last_corner.y * last_corner.y ) );
// Arc stop point calculation, the intersecting point of cutout arc and thermal spoke edge
corner_end.y = copper_thickness.y / 2;
corner_end.x =
(int) sqrt( ( (double) outer_radius *
outer_radius ) - ( (double) corner_end.y * corner_end.y ) );
RotatePoint( &corner_end, -90 );
// calculate intermediate arc points till limit is reached
while( (corner.y > corner_end.y) && (corner.x < corner_end.x) )
{
corners_buffer.push_back( corner + shape_offset );
RotatePoint( &corner, delta );
}
//corners_buffer.push_back(corner + shape_offset); // TODO: about one mil geometry error forms somewhere.
corners_buffer.push_back( corner_end + shape_offset );
corners_buffer.push_back( last_corner + shape_offset ); // Enabling the line above shows intersection point.
/* Create 2 holes, rotated by pad rotation.
*/
angle = aPad.m_Orient + supp_angle;
for( int irect = 0; irect < 2; irect++ )
{
if( aBooleng->StartPolygonAdd( GROUP_B ) )
{
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += PadShapePos;
aBooleng->AddPoint( cpos.x, cpos.y );
}
aBooleng->EndPolygonAdd();
angle += 1800; // this is calculate hole 3
if( angle >= 3600 )
angle -= 3600;
}
}
// Create holes, that are the mirrored from the previous holes
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint swap = corners_buffer[ic];
swap.x = -swap.x;
corners_buffer[ic] = swap;
}
// Now add corner 4 and 2 (2 is the corner 4 rotated by 180 deg
angle = aPad.m_Orient + supp_angle;
for( int irect = 0; irect < 2; irect++ )
{
if( aBooleng->StartPolygonAdd( GROUP_B ) )
{
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += PadShapePos;
aBooleng->AddPoint( cpos.x, cpos.y );
}
aBooleng->EndPolygonAdd();
angle += 1800;
if( angle >= 3600 )
angle -= 3600;
}
}
}
break;
case PAD_RECT: // draw 4 Holes
{
/* we create 4 copper holes and put them in position 1, 2, 3 and 4
* here is the area of the rectangular pad + its thermal gap
* the 4 copper holes remove the copper in order to create the thermal gap
* 4 ------ 1
* | |
* | |
* | |
* | |
* 3 ------ 2
* hole 3 is the same as hole 1, rotated 180 deg
* hole 4 is the same as hole 2, rotated 180 deg and is the same as hole 1, mirrored
*/
// First, create a rectangular hole for position 1 :
// 2 ------- 3
// | |
// | |
// | |
// 1 -------4
// Modified rectangles with one corner rounded. TODO: merging with oval thermals and possibly round too.
std::vector <wxPoint> corners_buffer; // Polygon buffer as vector
int dx = (aPad.m_Size.x / 2) + aThermalGap; // Cutout radius x
int dy = (aPad.m_Size.y / 2) + aThermalGap; // Cutout radius y
// The first point of polygon buffer is left lower corner, second the crosspoint of thermal spoke sides,
// the third is upper right corner and the rest are rounding vertices going anticlockwise. Note the inveted Y-axis in CG.
corners_buffer.push_back( wxPoint( -dx, -(aThermalGap / 4 + copper_thickness.y / 2) ) ); // Adds small miters to zone
corners_buffer.push_back( wxPoint( -(dx - aThermalGap / 4), -copper_thickness.y / 2 ) ); // fill and spoke corner
corners_buffer.push_back( wxPoint( -copper_thickness.x / 2, -copper_thickness.y / 2 ) );
corners_buffer.push_back( wxPoint( -copper_thickness.x / 2, -(dy - aThermalGap / 4) ) );
corners_buffer.push_back( wxPoint( -(aThermalGap / 4 + copper_thickness.x / 2), -dy ) );
angle = aPad.m_Orient;
int rounding_radius = (int) ( aThermalGap * s_Correction ); // Corner rounding radius
int angle_pg; // Polygon increment angle
for( int i = 0; i < s_CircleToSegmentsCount / 4 + 1; i++ )
{
wxPoint corner_position = wxPoint( 0, -rounding_radius );
RotatePoint( &corner_position, (1800 / s_CircleToSegmentsCount) ); // Start at half increment offset
angle_pg = i * delta;
RotatePoint( &corner_position, angle_pg ); // Rounding vector rotation
corner_position -= aPad.m_Size / 2; // Rounding vector + Pad corner offset
corners_buffer.push_back( wxPoint( corner_position.x, corner_position.y ) );
}
for( int irect = 0; irect < 2; irect++ )
{
if( aBooleng->StartPolygonAdd( GROUP_B ) )
{
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle ); // Rotate according to module orientation
cpos += PadShapePos; // Shift origin to position
aBooleng->AddPoint( cpos.x, cpos.y );
}
aBooleng->EndPolygonAdd();
angle += 1800; // this is calculate hole 3
if( angle >= 3600 )
angle -= 3600;
}
}
// Create holes, that are the mirrored from the previous holes
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint swap = corners_buffer[ic];
swap.x = -swap.x;
corners_buffer[ic] = swap;
}
// Now add corner 4 and 2 (2 is the corner 4 rotated by 180 deg
for( int irect = 0; irect < 2; irect++ )
{
if( aBooleng->StartPolygonAdd( GROUP_B ) )
{
for( unsigned ic = 0; ic < corners_buffer.size(); ic++ )
{
wxPoint cpos = corners_buffer[ic];
RotatePoint( &cpos, angle );
cpos += PadShapePos;
aBooleng->AddPoint( cpos.x, cpos.y );
}
aBooleng->EndPolygonAdd();
angle += 1800;
if( angle >= 3600 )
angle -= 3600;
}
}
aBooleng->AddPoint( cornerBuffer[ii].x, cornerBuffer[ii].y );
if( cornerBuffer[ii].end_contour )
break;
}
aBooleng->EndPolygonAdd();
#ifdef CREATE_KBOOL_KEY_FILES
StartKeyFilePolygon( 1 );
for( ii = icnt; ii < cornerBuffer.size(); ii++ )
{
AddKeyFilePointXY( cornerBuffer[ii].x, cornerBuffer[ii].y );
if( cornerBuffer[ii].end_contour )
break;
}
EndKeyFilePolygon();
#endif
icnt = ii + 1;
}
return polycount;
}
@ -1182,9 +848,9 @@ void AddThermalReliefPadPolygon( Bool_Engine* aBooleng,
void AddTrackWithClearancePolygon( Bool_Engine* aBooleng,
TRACK& aTrack, int aClearanceValue )
{
static std::vector <wxPoint> cornerBuffer;
static std::vector <CPolyPt> cornerBuffer;
cornerBuffer.clear();
aTrack.TransformTrackWithClearanceToPolygon( cornerBuffer,
aTrack.TransformShapeWithClearanceToPolygon( cornerBuffer,
aClearanceValue,
s_CircleToSegmentsCount,
s_Correction );
@ -1198,13 +864,11 @@ void AddTrackWithClearancePolygon( Bool_Engine* aBooleng,
aBooleng->EndPolygonAdd();
#ifdef CREATE_KBOOL_KEY_FILES_FIRST_PASS
StartKeyFilePolygon( cornerBuffer.size() + 1, 1 );
StartKeyFilePolygon( 1 );
for( unsigned ii = 0; ii < cornerBuffer.size(); ii++ )
AddKeyFilePointXY( cornerBuffer[ii].x, cornerBuffer[ii].y );
// Close polygon
AddKeyFilePointXY( cornerBuffer[0].x, cornerBuffer[0].y );
EndKeyFileElement();
EndKeyFilePolygon();
#endif
}
@ -1217,7 +881,7 @@ void AddRoundedEndsSegmentPolygon( Bool_Engine* aBooleng,
wxPoint aStart, wxPoint aEnd,
int aWidth )
{
static std::vector <wxPoint> cornerBuffer;
static std::vector <CPolyPt> cornerBuffer;
cornerBuffer.clear();
TransformRoundedEndsSegmentToPolygon( cornerBuffer,
aStart, aEnd,
@ -1233,100 +897,15 @@ void AddRoundedEndsSegmentPolygon( Bool_Engine* aBooleng,
aBooleng->EndPolygonAdd();
#ifdef CREATE_KBOOL_KEY_FILES
StartKeyFilePolygon( cornerBuffer.size() + 1, 1 );
StartKeyFilePolygon( 1 );
for( unsigned ii = 0; ii < cornerBuffer.size(); ii++ )
AddKeyFilePointXY( cornerBuffer[ii].x, cornerBuffer[ii].y );
// Close polygon
AddKeyFilePointXY( cornerBuffer[0].x, cornerBuffer[0].y );
EndKeyFileElement();
EndKeyFilePolygon();
#endif
}
/** Function AddRingPolygon
* Add a polygon cutout for an Arc in a zone area
* Convert arcs to multiple straight segments
* @param aBooleng = the bool engine to use
* @param aCentre = centre of the arc or circle
* @param aStart = start point of the arc, or apoint of the circle
* @param aArcAngle = arc angle in 0.1 degrees. For a circle, aArcAngle = 3600
* @param aWidth = width of the line
*/
void AddRingPolygon( Bool_Engine* aBooleng, wxPoint aCentre,
wxPoint aStart, int aArcAngle,
int aWidth )
{
wxPoint arc_start, arc_end;
int delta = 3600 / s_CircleToSegmentsCount; // rot angle in 0.1 degree
arc_end = arc_start = aStart;
if( aArcAngle != 3600 )
{
RotatePoint( &arc_end, aCentre, -aArcAngle );
}
if( aArcAngle < 0 )
{
EXCHG( arc_start, arc_end );
NEGATE( aArcAngle );
}
// Compute the ends of segments and creates poly
wxPoint curr_end = arc_start, curr_start = arc_start;
for( int ii = delta; ii < aArcAngle; ii += delta )
{
curr_end = arc_start;
RotatePoint( &curr_end, aCentre, -ii );
AddRoundedEndsSegmentPolygon( aBooleng, curr_start, curr_end, aWidth );
curr_start = curr_end;
}
if( curr_end != arc_end )
AddRoundedEndsSegmentPolygon( aBooleng, curr_end, arc_end, aWidth );
}
/** function AddTextBoxWithClearancePolygon
* creates a polygon containing the text and add it to bool engine
*/
void AddTextBoxWithClearancePolygon( Bool_Engine* aBooleng,
TEXTE_PCB* aText, int aClearanceValue )
{
if( aText->GetLength() == 0 )
return;
wxPoint corners[4]; // Buffer of polygon corners
EDA_Rect rect = aText->GetTextBox( -1 );
rect.Inflate( aClearanceValue, aClearanceValue );
corners[0] = rect.GetOrigin();
corners[1].y = corners[0].y;
corners[1].x = rect.GetRight();
corners[2].x = corners[1].x;
corners[2].y = rect.GetBottom();
corners[3].y = corners[2].y;
corners[3].x = corners[0].x;
if( aBooleng->StartPolygonAdd( GROUP_B ) )
{
for( int ii = 0; ii < 4; ii++ )
{
// Rotate polygon
RotatePoint( &corners[ii].x,
&corners[ii].y,
aText->m_Pos.x,
aText->m_Pos.y,
aText->m_Orient );
aBooleng->AddPoint( corners[ii].x, corners[ii].y );
}
aBooleng->EndPolygonAdd();
}
}
/***********************************************************************************************************/
int ZONE_CONTAINER::CopyPolygonsFromFilledPolysListToBoolengine( Bool_Engine* aBoolengine,
GroupType aGroup )