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kicad/pcbnew/pad_print_functions.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2017 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2012 Wayne Stambaugh <stambaughw@verizon.net>
* Copyright (C) 1992-2019 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 <class_board.h>
#include <common.h>
#include <convert_basic_shapes_to_polygon.h>
#include <gr_text.h>
#include <fctsys.h>
#include <geometry/geometry_utils.h>
#include <gr_basic.h>
#include <math/util.h> // for KiROUND
#include <layers_id_colors_and_visibility.h>
#include <pcb_edit_frame.h>
#include <pcb_screen.h>
#include <pcbnew.h>
#include <trigo.h>
// Helper class to store parameters used to draw a pad
PAD_DRAWINFO::PAD_DRAWINFO()
{
m_Color = BLACK;
m_HoleColor = BLACK; // could be DARKGRAY;
m_NPHoleColor = YELLOW;
m_NoNetMarkColor = BLUE;
m_PadClearance = 0;
m_Display_padnum = true;
m_Display_netname = true;
m_ShowPadFilled = true;
m_ShowNCMark = true;
m_ShowNotPlatedHole = false;
m_IsPrinting = false;
}
void D_PAD::Print( PCB_BASE_FRAME* aFrame, wxDC* aDC, const wxPoint& aOffset )
{
wxSize mask_margin; // margin (clearance) used for some non copper layers
if( m_Flags & DO_NOT_DRAW )
return;
PAD_DRAWINFO drawInfo;
drawInfo.m_Offset = aOffset;
/* We can show/hide pads from the layer manager.
* options are show/hide pads on front and/or back side of the board
* For through pads, we hide them only if both sides are hidden.
* smd pads on back are hidden for all layers (copper and technical layers)
* on back side of the board
* smd pads on front are hidden for all layers (copper and technical layers)
* on front side of the board
* ECO, edge and Draw layers and not considered
*/
BOARD* brd = GetBoard();
const auto& cds = aFrame->Settings().Colors();
bool frontVisible = brd->IsElementVisible( LAYER_PAD_FR );
bool backVisible = brd->IsElementVisible( LAYER_PAD_BK );
if( !frontVisible && !backVisible )
return;
// If pad is only on front side (no layer on back side)
// and if hide front side pads is enabled, do not draw
if( !frontVisible && !( m_layerMask & LSET::BackMask() ).any() )
return;
// If pad is only on back side (no layer on front side)
// and if hide back side pads is enabled, do not draw
if( !backVisible && !( m_layerMask & LSET::FrontMask() ).any() )
return;
auto& displ_opts = aFrame->GetDisplayOptions();
PCB_SCREEN* screen = aFrame->GetScreen();
if( displ_opts.m_DisplayPadFill == SKETCH )
drawInfo.m_ShowPadFilled = false;
else
drawInfo.m_ShowPadFilled = true;
COLOR4D color = COLOR4D::BLACK;
if( m_layerMask[F_Cu] )
{
color = cds.GetItemColor( LAYER_PAD_FR );
}
if( m_layerMask[B_Cu] )
{
color = color.LegacyMix( cds.GetItemColor( LAYER_PAD_BK ) );
}
if( color == BLACK ) // Not on a visible copper layer (i.e. still nothing to show)
{
// If the pad is on only one tech layer, use the layer color else use DARKGRAY
LSET mask_non_copper_layers = m_layerMask & ~LSET::AllCuMask();
PCB_LAYER_ID pad_layer = mask_non_copper_layers.ExtractLayer();
switch( (int) pad_layer )
{
case UNDEFINED_LAYER: // More than one layer
color = DARKGRAY;
break;
case UNSELECTED_LAYER: // Shouldn't really happen...
break;
default:
color = cds.GetLayerColor( pad_layer );
}
}
if( ( IsOnLayer( B_Paste ) && brd->IsLayerVisible( B_Paste ) ) ||
( IsOnLayer( F_Paste ) && brd->IsLayerVisible( F_Paste ) ) )
{
mask_margin = GetSolderPasteMargin();
}
if( ( IsOnLayer( B_Mask ) && brd->IsLayerVisible( B_Mask ) ) ||
( IsOnLayer( F_Mask ) && brd->IsLayerVisible( F_Mask ) ) )
{
mask_margin.x = std::max( mask_margin.x, GetSolderMaskMargin() );
mask_margin.y = std::max( mask_margin.y, GetSolderMaskMargin() );
}
bool DisplayIsol = displ_opts.m_DisplayPadIsol;
if( !( m_layerMask & LSET::AllCuMask() ).any() )
DisplayIsol = false;
if( ( GetAttribute() == PAD_ATTRIB_HOLE_NOT_PLATED ) &&
brd->IsElementVisible( LAYER_NON_PLATEDHOLES ) )
{
drawInfo.m_ShowNotPlatedHole = true;
drawInfo.m_NPHoleColor = cds.GetItemColor( LAYER_NON_PLATEDHOLES );
}
// Don't let pads that *should* be NPTHs get lost
else if ( PadShouldBeNPTH() )
{
drawInfo.m_ShowNotPlatedHole = true;
drawInfo.m_NPHoleColor = cds.GetItemColor( LAYER_MOD_TEXT_INVISIBLE );
}
drawInfo.m_Color = color;
drawInfo.m_NoNetMarkColor = cds.GetItemColor( LAYER_NO_CONNECTS );
drawInfo.m_Mask_margin = mask_margin;
drawInfo.m_ShowNCMark = brd->IsElementVisible( LAYER_NO_CONNECTS );
drawInfo.m_IsPrinting = screen->m_IsPrinting;
color.a = 0.666;
/* Get the pad clearance. This has a meaning only for Pcbnew.
* for CvPcb GetClearance() creates debug errors because
* there is no net classes so a call to GetClearance() is made only when
* needed (never needed in CvPcb)
*/
drawInfo.m_PadClearance = DisplayIsol ? GetClearance() : 0;
// Draw the pad number
if( !displ_opts.m_DisplayPadNum )
drawInfo.m_Display_padnum = false;
if( ( displ_opts.m_DisplayNetNamesMode == 0 ) || ( displ_opts.m_DisplayNetNamesMode == 2 ) )
drawInfo.m_Display_netname = false;
PrintShape( aDC, drawInfo );
}
void D_PAD::PrintShape( wxDC* aDC, PAD_DRAWINFO& aDrawInfo )
{
#define SEGCOUNT 32 // number of segments to approximate a circle
wxPoint coord[12];
double angle = m_Orient;
int seg_width;
// calculate pad shape position :
wxPoint shape_pos = ShapePos() - aDrawInfo.m_Offset;
wxSize halfsize = m_Size;
halfsize.x >>= 1;
halfsize.y >>= 1;
switch( GetShape() )
{
case PAD_SHAPE_CIRCLE:
if( aDrawInfo.m_ShowPadFilled )
GRFilledCircle( nullptr, aDC, shape_pos.x, shape_pos.y,
halfsize.x + aDrawInfo.m_Mask_margin.x, 0,
aDrawInfo.m_Color, aDrawInfo.m_Color );
else
GRCircle( nullptr, aDC, shape_pos.x, shape_pos.y,
halfsize.x + aDrawInfo.m_Mask_margin.x,
m_PadSketchModePenSize, aDrawInfo.m_Color );
if( aDrawInfo.m_PadClearance )
{
GRCircle( nullptr, aDC, shape_pos.x, shape_pos.y,
halfsize.x + aDrawInfo.m_PadClearance, 0, aDrawInfo.m_Color );
}
break;
case PAD_SHAPE_OVAL:
{
wxPoint segStart, segEnd;
seg_width = BuildSegmentFromOvalShape( segStart, segEnd, angle, aDrawInfo.m_Mask_margin );
segStart += shape_pos;
segEnd += shape_pos;
if( aDrawInfo.m_ShowPadFilled )
{
GRFillCSegm( nullptr, aDC, segStart.x, segStart.y, segEnd.x, segEnd.y, seg_width,
aDrawInfo.m_Color );
}
else
{
GRCSegm( nullptr, aDC, segStart.x, segStart.y, segEnd.x, segEnd.y, seg_width,
m_PadSketchModePenSize, aDrawInfo.m_Color );
}
// Draw the clearance line
if( aDrawInfo.m_PadClearance )
{
seg_width += 2 * aDrawInfo.m_PadClearance;
GRCSegm( nullptr, aDC, segStart.x, segStart.y, segEnd.x, segEnd.y, seg_width,
aDrawInfo.m_Color );
}
}
break;
case PAD_SHAPE_RECT:
case PAD_SHAPE_TRAPEZOID:
BuildPadPolygon( coord, aDrawInfo.m_Mask_margin, angle );
for( int ii = 0; ii < 4; ii++ )
coord[ii] += shape_pos;
GRClosedPoly( nullptr, aDC, 4, coord, aDrawInfo.m_ShowPadFilled,
aDrawInfo.m_ShowPadFilled ? 0 : m_PadSketchModePenSize,
aDrawInfo.m_Color, aDrawInfo.m_Color );
if( aDrawInfo.m_PadClearance )
{
SHAPE_POLY_SET outline;
TransformShapeWithClearanceToPolygon( outline, aDrawInfo.m_PadClearance );
// Draw the polygon: Inflate creates only one convex polygon
if( outline.OutlineCount() > 0 )
{
SHAPE_LINE_CHAIN& poly = outline.Outline( 0 );
if( poly.PointCount() > 0 )
{
GRClosedPoly( nullptr, aDC, poly.PointCount(),
(const wxPoint*) &poly.CPoint( 0 ), false, 0, aDrawInfo.m_Color,
aDrawInfo.m_Color );
}
}
}
break;
case PAD_SHAPE_CHAMFERED_RECT:
case PAD_SHAPE_ROUNDRECT:
{
// Use solder[Paste/Mask]size or pad size to build pad shape to draw
wxSize size( GetSize() );
size += aDrawInfo.m_Mask_margin * 2;
int corner_radius = GetRoundRectCornerRadius( size );
bool doChamfer = GetShape() == PAD_SHAPE_CHAMFERED_RECT;
SHAPE_POLY_SET outline;
TransformRoundChamferedRectToPolygon( outline, shape_pos, size, GetOrientation(),
corner_radius, GetChamferRectRatio(),
doChamfer ? GetChamferPositions() : 0,
ARC_HIGH_DEF );
// Draw the polygon: Inflate creates only one convex polygon
bool filled = aDrawInfo.m_ShowPadFilled;
SHAPE_LINE_CHAIN& poly = outline.Outline( 0 );
GRClosedPoly( nullptr, aDC, poly.PointCount(), (const wxPoint*) &poly.CPoint( 0 ), filled,
0, aDrawInfo.m_Color, aDrawInfo.m_Color );
if( aDrawInfo.m_PadClearance )
{
outline.RemoveAllContours();
size = GetSize();
size.x += aDrawInfo.m_PadClearance * 2;
size.y += aDrawInfo.m_PadClearance * 2;
corner_radius = GetRoundRectCornerRadius() + aDrawInfo.m_PadClearance;
TransformRoundChamferedRectToPolygon( outline, shape_pos, size, GetOrientation(),
corner_radius, GetChamferRectRatio(),
doChamfer ? GetChamferPositions() : 0,
ARC_HIGH_DEF );
// Draw the polygon: Inflate creates only one convex polygon
SHAPE_LINE_CHAIN& clearance_poly = outline.Outline( 0 );
GRClosedPoly( nullptr, aDC, clearance_poly.PointCount(),
(const wxPoint*) &clearance_poly.CPoint( 0 ), false, 0, aDrawInfo.m_Color,
aDrawInfo.m_Color );
}
}
break;
case PAD_SHAPE_CUSTOM:
{
// The full shape has 2 items
// 1- The anchor pad: a round or rect pad located at pad position
// 2- The custom complex shape
// Note: The anchor pad shape is containing by the custom complex shape polygon
// The anchor pad is shown to help user to see where is the anchor, only in sketch mode
// (In filled mode, it is merged with the basic shapes)
wxPoint pad_pos = GetPosition() - aDrawInfo.m_Offset;
// In sketch mode only: Draw the anchor pad: a round or rect pad
if( !aDrawInfo.m_ShowPadFilled )
{
if( GetAnchorPadShape() == PAD_SHAPE_RECT )
{
wxPoint poly[4];
poly[0] = wxPoint( - halfsize.x, - halfsize.y );
poly[1] = wxPoint( - halfsize.x, + halfsize.y );
poly[2] = wxPoint( + halfsize.x, + halfsize.y );
poly[3] = wxPoint( + halfsize.x, - halfsize.y );
for( int ii = 0; ii < 4; ++ii )
{
RotatePoint( &poly[ii], m_Orient );
poly[ii] += pad_pos;
}
GRClosedPoly( nullptr, aDC, 4, poly, false, 0, aDrawInfo.m_Color,
aDrawInfo.m_Color );
}
else
{
GRCircle( nullptr, aDC, pad_pos.x, pad_pos.y, halfsize.x,
m_PadSketchModePenSize, aDrawInfo.m_Color );
}
}
SHAPE_POLY_SET outline; // Will contain the corners in board coordinates
outline.Append( m_customShapeAsPolygon );
CustomShapeAsPolygonToBoardPosition( &outline, pad_pos, GetOrientation() );
if( aDrawInfo.m_Mask_margin.x )
{
int numSegs = GetArcToSegmentCount( aDrawInfo.m_Mask_margin.x, ARC_HIGH_DEF, 360.0 );
outline.InflateWithLinkedHoles(
aDrawInfo.m_Mask_margin.x, numSegs, SHAPE_POLY_SET::PM_FAST );
}
// Draw the polygon: only one polygon is expected
// However we provide a multi polygon shape drawing
// ( can happen with CUSTOM pads and negative margins )
for( int jj = 0; jj < outline.OutlineCount(); ++jj )
{
auto& poly = outline.Outline( jj );
GRClosedPoly( nullptr, aDC, poly.PointCount(), (const wxPoint*) &poly.CPoint( 0 ),
aDrawInfo.m_ShowPadFilled, 0, aDrawInfo.m_Color, aDrawInfo.m_Color );
}
if( aDrawInfo.m_PadClearance )
{
SHAPE_POLY_SET clearance_outline;
clearance_outline.Append( outline );
int numSegs = GetArcToSegmentCount( aDrawInfo.m_PadClearance, ARC_HIGH_DEF, 360.0 );
clearance_outline.InflateWithLinkedHoles(
aDrawInfo.m_PadClearance, numSegs, SHAPE_POLY_SET::PM_FAST );
for( int jj = 0; jj < clearance_outline.OutlineCount(); ++jj )
{
auto& poly = clearance_outline.Outline( jj );
if( poly.PointCount() > 0 )
{
GRClosedPoly( nullptr, aDC, poly.PointCount(),
(const wxPoint*) &poly.CPoint( 0 ), false, 0, aDrawInfo.m_Color,
aDrawInfo.m_Color );
}
}
}
break;
}
}
// Draw the pad hole
wxPoint holepos = m_Pos - aDrawInfo.m_Offset;
int hole = m_Drill.x >> 1;
bool drawhole = hole > 0;
if( !aDrawInfo.m_ShowPadFilled && !aDrawInfo.m_ShowNotPlatedHole )
drawhole = false;
if( drawhole )
{
bool blackpenstate = false;
COLOR4D fillcolor = aDrawInfo.m_ShowNotPlatedHole? aDrawInfo.m_NPHoleColor :
aDrawInfo.m_HoleColor;
COLOR4D hole_color = fillcolor;
fillcolor = COLOR4D::WHITE;
blackpenstate = GetGRForceBlackPenState();
GRForceBlackPen( false );
if( blackpenstate )
hole_color = COLOR4D::BLACK;
switch( GetDrillShape() )
{
case PAD_DRILL_SHAPE_CIRCLE:
if( aDC->LogicalToDeviceXRel( hole ) > 1 ) // hole is drawn if hole > 1pixel
GRFilledCircle( nullptr, aDC, holepos.x, holepos.y, hole, 0, hole_color, fillcolor );
break;
case PAD_DRILL_SHAPE_OBLONG:
{
wxPoint drl_start, drl_end;
GetOblongDrillGeometry( drl_start, drl_end, seg_width );
drl_start += holepos;
drl_end += holepos;
GRFilledSegment( nullptr, aDC, drl_start, drl_end, seg_width, fillcolor );
GRCSegm( nullptr, aDC, drl_start, drl_end, seg_width, hole_color );
}
break;
default:
break;
}
if( aDrawInfo.m_IsPrinting )
GRForceBlackPen( blackpenstate );
}
// Draw "No connect" ( / or \ or cross X ) if necessary
if( GetNetCode() == 0 && aDrawInfo.m_ShowNCMark )
{
int dx0 = std::min( halfsize.x, halfsize.y );
if( m_layerMask[F_Cu] ) /* Draw \ */
GRLine( nullptr, aDC, holepos.x - dx0, holepos.y - dx0,
holepos.x + dx0, holepos.y + dx0, 0, aDrawInfo.m_NoNetMarkColor );
if( m_layerMask[B_Cu] ) // Draw /
GRLine( nullptr, aDC, holepos.x + dx0, holepos.y - dx0,
holepos.x - dx0, holepos.y + dx0, 0, aDrawInfo.m_NoNetMarkColor );
}
// Draw the pad number
if( !aDrawInfo.m_Display_padnum && !aDrawInfo.m_Display_netname )
return;
wxPoint tpos0 = shape_pos; // Position of the centre of text
wxPoint tpos = tpos0;
wxSize AreaSize; // size of text area, normalized to AreaSize.y < AreaSize.x
wxString shortname;
int shortname_len = 0;
if( aDrawInfo.m_Display_netname )
{
shortname = UnescapeString( GetShortNetname() );
shortname_len = shortname.Len();
}
if( GetShape() == PAD_SHAPE_CIRCLE )
angle = 0;
AreaSize = m_Size;
if( m_Size.y > m_Size.x )
{
angle += 900;
AreaSize.x = m_Size.y;
AreaSize.y = m_Size.x;
}
if( shortname_len > 0 ) // if there is a netname, provides room to display this netname
{
AreaSize.y /= 2; // Text used only the upper area of the
// pad. The lower area displays the net name
tpos.y -= AreaSize.y / 2;
}
// Calculate the position of text, that is the middle point of the upper
// area of the pad
RotatePoint( &tpos, shape_pos, angle );
// Draw text with an angle between -90 deg and + 90 deg
double t_angle = angle;
NORMALIZE_ANGLE_90( t_angle );
/* Note: in next calculations, texte size is calculated for 3 or more
* chars. Of course, pads numbers and nets names can have less than 3
* chars. but after some tries, i found this is gives the best look
*/
constexpr int MIN_CHAR_COUNT = 3;
unsigned int tsize;
if( aDrawInfo.m_Display_padnum )
{
int numpad_len = std::max( (int) m_name.Length(), MIN_CHAR_COUNT );
tsize = std::min( (int) AreaSize.y, AreaSize.x / numpad_len );
if( aDC->LogicalToDeviceXRel( tsize ) >= MIN_TEXT_SIZE ) // Not drawable when size too small.
{
// tsize reserve room for marges and segments thickness
tsize = ( tsize * 7 ) / 10;
GRHaloText( aDC, tpos, aDrawInfo.m_Color, BLACK, WHITE, m_name, t_angle,
wxSize( tsize , tsize ), GR_TEXT_HJUSTIFY_CENTER, GR_TEXT_VJUSTIFY_CENTER,
tsize / 7, false, false );
}
}
// display the short netname, if exists
if( shortname_len == 0 )
return;
shortname_len = std::max( shortname_len, MIN_CHAR_COUNT );
tsize = std::min( AreaSize.y, AreaSize.x / shortname_len );
if( aDC->LogicalToDeviceXRel( tsize ) >= MIN_TEXT_SIZE ) // Not drawable in size too small.
{
tpos = tpos0;
if( aDrawInfo.m_Display_padnum )
tpos.y += AreaSize.y / 2;
RotatePoint( &tpos, shape_pos, angle );
// tsize reserve room for marges and segments thickness
tsize = ( tsize * 7 ) / 10;
GRHaloText( aDC, tpos, aDrawInfo.m_Color, BLACK, WHITE, shortname, t_angle,
wxSize( tsize, tsize ), GR_TEXT_HJUSTIFY_CENTER, GR_TEXT_VJUSTIFY_CENTER,
tsize / 7, false, false );
}
}
/**
* Function BuildSegmentFromOvalShape
* Has meaning only for OVAL (and ROUND) pads.
* Build an equivalent segment having the same shape as the OVAL shape,
* aSegStart and aSegEnd are the ending points of the equivalent segment of the shape
* aRotation is the asked rotation of the segment (usually m_Orient)
*/
int D_PAD::BuildSegmentFromOvalShape( wxPoint& aSegStart, wxPoint& aSegEnd, double aRotation,
const wxSize& aMargin ) const
{
int width;
if( m_Size.y < m_Size.x ) // Build an horizontal equiv segment
{
int delta = ( m_Size.x - m_Size.y ) / 2;
aSegStart.x = -delta - aMargin.x;
aSegStart.y = 0;
aSegEnd.x = delta + aMargin.x;
aSegEnd.y = 0;
width = m_Size.y + ( aMargin.y * 2 );
}
else // Vertical oval: build a vertical equiv segment
{
int delta = ( m_Size.y -m_Size.x ) / 2;
aSegStart.x = 0;
aSegStart.y = -delta - aMargin.y;
aSegEnd.x = 0;
aSegEnd.y = delta + aMargin.y;
width = m_Size.x + ( aMargin.x * 2 );
}
if( aRotation )
{
RotatePoint( &aSegStart, aRotation);
RotatePoint( &aSegEnd, aRotation);
}
return width;
}
void D_PAD::BuildPadPolygon( wxPoint aCoord[4], wxSize aInflateValue,
double aRotation ) const
{
wxSize delta;
wxSize halfsize;
halfsize.x = m_Size.x >> 1;
halfsize.y = m_Size.y >> 1;
switch( GetShape() )
{
case PAD_SHAPE_RECT:
// For rectangular shapes, inflate is easy
halfsize += aInflateValue;
// Verify if do not deflate more than than size
// Only possible for inflate negative values.
if( halfsize.x < 0 )
halfsize.x = 0;
if( halfsize.y < 0 )
halfsize.y = 0;
break;
case PAD_SHAPE_TRAPEZOID:
// Trapezoidal pad: verify delta values
delta.x = ( m_DeltaSize.x >> 1 );
delta.y = ( m_DeltaSize.y >> 1 );
// be sure delta values are not to large
if( (delta.x < 0) && (delta.x <= -halfsize.y) )
delta.x = -halfsize.y + 1;
if( (delta.x > 0) && (delta.x >= halfsize.y) )
delta.x = halfsize.y - 1;
if( (delta.y < 0) && (delta.y <= -halfsize.x) )
delta.y = -halfsize.x + 1;
if( (delta.y > 0) && (delta.y >= halfsize.x) )
delta.y = halfsize.x - 1;
break;
default: // is used only for rect and trap. pads
return;
}
// Build the basic rectangular or trapezoid shape
// delta is null for rectangular shapes
aCoord[0].x = -halfsize.x - delta.y; // lower left
aCoord[0].y = +halfsize.y + delta.x;
aCoord[1].x = -halfsize.x + delta.y; // upper left
aCoord[1].y = -halfsize.y - delta.x;
aCoord[2].x = +halfsize.x - delta.y; // upper right
aCoord[2].y = -halfsize.y + delta.x;
aCoord[3].x = +halfsize.x + delta.y; // lower right
aCoord[3].y = +halfsize.y - delta.x;
// Offsetting the trapezoid shape id needed
// It is assumed delta.x or/and delta.y == 0
if( GetShape() == PAD_SHAPE_TRAPEZOID && (aInflateValue.x != 0 || aInflateValue.y != 0) )
{
double angle;
wxSize corr;
if( delta.y ) // lower and upper segment is horizontal
{
// Calculate angle of left (or right) segment with vertical axis
angle = atan2( (double) m_DeltaSize.y, (double) m_Size.y );
// left and right sides are moved by aInflateValue.x in their perpendicular direction
// We must calculate the corresponding displacement on the horizontal axis
// that is delta.x +- corr.x depending on the corner
corr.x = KiROUND( tan( angle ) * aInflateValue.x );
delta.x = KiROUND( aInflateValue.x / cos( angle ) );
// Horizontal sides are moved up and down by aInflateValue.y
delta.y = aInflateValue.y;
// corr.y = 0 by the constructor
}
else if( delta.x ) // left and right segment is vertical
{
// Calculate angle of lower (or upper) segment with horizontal axis
angle = atan2( (double) m_DeltaSize.x, (double) m_Size.x );
// lower and upper sides are moved by aInflateValue.x in their perpendicular direction
// We must calculate the corresponding displacement on the vertical axis
// that is delta.y +- corr.y depending on the corner
corr.y = KiROUND( tan( angle ) * aInflateValue.y );
delta.y = KiROUND( aInflateValue.y / cos( angle ) );
// Vertical sides are moved left and right by aInflateValue.x
delta.x = aInflateValue.x;
// corr.x = 0 by the constructor
}
else // the trapezoid is a rectangle
{
delta = aInflateValue; // this pad is rectangular (delta null).
}
aCoord[0].x += -delta.x - corr.x; // lower left
aCoord[0].y += delta.y + corr.y;
aCoord[1].x += -delta.x + corr.x; // upper left
aCoord[1].y += -delta.y - corr.y;
aCoord[2].x += delta.x - corr.x; // upper right
aCoord[2].y += -delta.y + corr.y;
aCoord[3].x += delta.x + corr.x; // lower right
aCoord[3].y += delta.y - corr.y;
/* test coordinates and clamp them if the offset correction is too large:
* Note: if a coordinate is bad, the other "symmetric" coordinate is bad
* So when a bad coordinate is found, the 2 symmetric coordinates
* are set to the minimun value (0)
*/
if( aCoord[0].x > 0 ) // lower left x coordinate must be <= 0
aCoord[0].x = aCoord[3].x = 0;
if( aCoord[1].x > 0 ) // upper left x coordinate must be <= 0
aCoord[1].x = aCoord[2].x = 0;
if( aCoord[0].y < 0 ) // lower left y coordinate must be >= 0
aCoord[0].y = aCoord[1].y = 0;
if( aCoord[3].y < 0 ) // lower right y coordinate must be >= 0
aCoord[3].y = aCoord[2].y = 0;
}
if( aRotation )
{
for( int ii = 0; ii < 4; ii++ )
RotatePoint( &aCoord[ii], aRotation );
}
}
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