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/**********************************************//* board_items_to_polygon_shape_transform.cpp *//**********************************************/
/* Function to convert pads and tranck shapes to polygons
* Used to fill zones areas */#include <vector>
#include "fctsys.h"
#include "pcbnew.h"
#include "wxPcbStruct.h"
#include "trigo.h"
#include "macros.h"
#include "class_pad.h"
#include "class_track.h"
#include "class_drawsegment.h"
#include "class_pcb_text.h"
/* Exported functions */
/**
* Function TransformRoundedEndsSegmentToPolygon * convert a segment with rounded ends to a polygon * Convert arcs to multiple straight lines * @param aCornerBuffer = a buffer to store the polygon * @param aStart = the segment start point coordinate * @param aEnd = the segment end point coordinate * @param aCircleToSegmentsCount = the number of segments to approximate a circle * @param aWidth = the segment width */void TransformRoundedEndsSegmentToPolygon( std::vector <CPolyPt>& aCornerBuffer, wxPoint aStart, wxPoint aEnd, int aCircleToSegmentsCount, int aWidth );
/**
* 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; // rotate 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 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 ); 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 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 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 * @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 TRACK:: TransformShapeWithClearanceToPolygon( std:: vector < CPolyPt>& aCornerBuffer, int aClearanceValue, int aCircleToSegmentsCount, double aCorrectionFactor ){ wxPoint corner_position; int ii, angle; int dx = (m_Width / 2) + aClearanceValue; int delta = 3600 / aCircleToSegmentsCount; // rot angle in 0.1 degree
switch( Type() ) { case PCB_VIA_T: dx = (int) ( dx * aCorrectionFactor );
for( ii = 0; ii < aCircleToSegmentsCount; ii++ ) { corner_position = wxPoint( dx, 0 ); RotatePoint( &corner_position.x, &corner_position.y, (1800 / aCircleToSegmentsCount) ); angle = ii * delta; 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) ); break; }}
/* Function TransformRoundedEndsSegmentToPolygon
*/void TransformRoundedEndsSegmentToPolygon( std::vector <CPolyPt>& aCornerBuffer, wxPoint aStart, wxPoint aEnd, int aCircleToSegmentsCount, int aWidth ){ int radius = aWidth / 2; wxPoint endp = aEnd - aStart; // end point coordinate for the same segment starting at (0,0)
wxPoint startp = aStart; wxPoint corner; int seg_len; CPolyPt polypoint;
// normalize the position in order to have endp.x >= 0;
if( endp.x < 0 ) { endp = aStart - aEnd; startp = aEnd; }
int delta_angle = ArcTangente( endp.y, endp.x ); // delta_angle is in 0.1 degrees
seg_len = (int) sqrt( ( (double) endp.y * endp.y ) + ( (double) endp.x * endp.x ) );
int delta = 3600 / aCircleToSegmentsCount; // rot angle in 0.1 degree
// Compute the outlines of the segment, and creates a polygon
corner = wxPoint( 0, radius ); RotatePoint( &corner, -delta_angle ); corner += startp; polypoint.x = corner.x; polypoint.y = corner.y; aCornerBuffer.push_back( polypoint );
corner = wxPoint( seg_len, radius ); RotatePoint( &corner, -delta_angle ); corner += startp; polypoint.x = corner.x; polypoint.y = corner.y; aCornerBuffer.push_back( polypoint );
// add right rounded end:
for( int ii = delta; ii < 1800; ii += delta ) { corner = wxPoint( 0, radius ); RotatePoint( &corner, ii ); corner.x += seg_len; RotatePoint( &corner, -delta_angle ); corner += startp; polypoint.x = corner.x; polypoint.y = corner.y; aCornerBuffer.push_back( polypoint ); }
corner = wxPoint( seg_len, -radius ); RotatePoint( &corner, -delta_angle ); corner += startp; polypoint.x = corner.x; polypoint.y = corner.y; aCornerBuffer.push_back( polypoint );
corner = wxPoint( 0, -radius ); RotatePoint( &corner, -delta_angle ); corner += startp; polypoint.x = corner.x; polypoint.y = corner.y; aCornerBuffer.push_back( polypoint );
// add left rounded end:
for( int ii = delta; ii < 1800; ii += delta ) { corner = wxPoint( 0, -radius ); RotatePoint( &corner, ii ); RotatePoint( &corner, -delta_angle ); corner += startp; polypoint.x = corner.x; polypoint.y = corner.y; aCornerBuffer.push_back( polypoint ); }
aCornerBuffer.back().end_contour = true;}
/**
* Function TransformShapeWithClearanceToPolygon * Convert the pad 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 D_PAD:: TransformShapeWithClearanceToPolygon( std:: vector < CPolyPt>& aCornerBuffer, int aClearanceValue, int aCircleToSegmentsCount, double aCorrectionFactor ){ wxPoint corner_position; int ii, angle; int dx = (m_Size.x / 2) + aClearanceValue; int dy = (m_Size.y / 2) + aClearanceValue;
int delta = 3600 / aCircleToSegmentsCount; // rot angle in 0.1 degree
wxPoint PadShapePos = ReturnShapePos(); /* Note: for pad having a shape offset,
* the pad position is NOT the shape position */ wxSize psize = m_Size; /* pad size unsed in RECT and TRAPEZOIDAL pads
* trapezoidal pads are considered as rect * pad shape having they boudary box size */
switch( m_PadShape ) { case PAD_CIRCLE: dx = (int) ( dx * aCorrectionFactor );
for( ii = 0; ii < aCircleToSegmentsCount; ii++ ) { corner_position = wxPoint( dx, 0 ); RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) );
// Half increment offset to get more space between
angle = ii * delta; RotatePoint( &corner_position, angle ); corner_position += PadShapePos; CPolyPt polypoint( corner_position.x, corner_position.y ); aCornerBuffer.push_back( polypoint ); }
aCornerBuffer.back().end_contour = true; break;
case PAD_OVAL: angle = m_Orient; if( dy > dx ) // Oval pad X/Y ratio for choosing translation axles
{ dy = (int) ( dy * aCorrectionFactor ); int angle_pg; // Polygon angle
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
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); RotatePoint( &corner_position, angle ); angle_pg = ii * delta; RotatePoint( &corner_position, angle_pg ); corner_position += PadShapePos - shape_offset; 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
RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); RotatePoint( &corner_position, angle ); angle_pg = ii * delta; RotatePoint( &corner_position, angle_pg ); corner_position += PadShapePos + shape_offset; CPolyPt polypoint( corner_position.x, corner_position.y ); aCornerBuffer.push_back( polypoint ); }
aCornerBuffer.back().end_contour = true; break; } else //if( dy <= dx )
{ dx = (int) ( dx * aCorrectionFactor ); int angle_pg; // Polygon angle
wxPoint shape_offset = wxPoint( (dy - dx), 0 ); RotatePoint( &shape_offset, angle );
for( ii = 0; ii < aCircleToSegmentsCount / 2 + 1; ii++ ) { corner_position = wxPoint( 0, dy ); RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); RotatePoint( &corner_position, angle ); angle_pg = ii * delta; RotatePoint( &corner_position, angle_pg ); corner_position += PadShapePos - shape_offset; CPolyPt polypoint( corner_position.x, corner_position.y ); aCornerBuffer.push_back( polypoint ); }
for( ii = 0; ii < aCircleToSegmentsCount / 2 + 1; ii++ ) { corner_position = wxPoint( 0, -dy ); RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); RotatePoint( &corner_position, angle ); angle_pg = ii * delta; RotatePoint( &corner_position, angle_pg ); corner_position += PadShapePos + shape_offset; CPolyPt polypoint( corner_position.x, corner_position.y ); aCornerBuffer.push_back( polypoint ); }
aCornerBuffer.back().end_contour = true; break; }
default: case PAD_TRAPEZOID: psize.x += ABS( m_DeltaSize.y ); psize.y += ABS( m_DeltaSize.x );
// fall through
case PAD_RECT: // Easy implementation for rectangular cutouts with rounded corners
angle = m_Orient;
// Corner rounding radius
int rounding_radius = (int) ( aClearanceValue * aCorrectionFactor ); int angle_pg; // Polygon increment angle
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
angle_pg = i * delta; 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
corner_position += PadShapePos; // Shift origin to position
CPolyPt polypoint( corner_position.x, corner_position.y ); aCornerBuffer.push_back( polypoint ); }
for( int i = 0; i < aCircleToSegmentsCount / 4 + 1; i++ ) { corner_position = wxPoint( -rounding_radius, 0 ); RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); angle_pg = i * delta; RotatePoint( &corner_position, angle_pg ); corner_position -= wxPoint( psize.x / 2, -psize.y / 2 ); RotatePoint( &corner_position, angle ); corner_position += PadShapePos; CPolyPt polypoint( corner_position.x, corner_position.y ); aCornerBuffer.push_back( polypoint ); }
for( int i = 0; i < aCircleToSegmentsCount / 4 + 1; i++ ) { corner_position = wxPoint( 0, rounding_radius ); RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); angle_pg = i * delta; RotatePoint( &corner_position, angle_pg ); corner_position += psize / 2; RotatePoint( &corner_position, angle ); corner_position += PadShapePos; CPolyPt polypoint( corner_position.x, corner_position.y ); aCornerBuffer.push_back( polypoint ); }
for( int i = 0; i < aCircleToSegmentsCount / 4 + 1; i++ ) { corner_position = wxPoint( rounding_radius, 0 ); RotatePoint( &corner_position, (1800 / aCircleToSegmentsCount) ); angle_pg = i * delta; RotatePoint( &corner_position, angle_pg ); corner_position -= wxPoint( -psize.x / 2, psize.y / 2 ); RotatePoint( &corner_position, angle ); corner_position += PadShapePos; 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 aCopperThickness = stubs thickness 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 corrected for arc approximation by lines
int outer_radius = (int) ( (dx + aThermalGap) * aCorrectionFactor );
// 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
// aThermalRot = 450 (45.0 degrees orientation) work fine.
int angle_pad = aPad.GetOrientation(); // 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.GetOrientation() + 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.GetOrientation() + 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.GetOrientation(); 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; } }}
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