//.........这里部分代码省略.........
                x = 0;
                shouldMoveCursor = true;
            }

            if( y < 0 )
            {
                currentPosition.y += y;
                y = 0;
                shouldMoveCursor = true;
            }

            if( x > maxX )
            {
                currentPosition.x += ( x - maxX );
                x = maxX;
                shouldMoveCursor = true;
            }

            if( y > maxY )
            {
                currentPosition.y += ( y - maxY );
                y = maxY;
                shouldMoveCursor = true;
            }

            if( shouldMoveCursor )
                WarpPointer( currentPosition.x, currentPosition.y );

            Scroll( x/ppux, y/ppuy );

            double scale = GetParent()->GetScreen()->GetScalingFactor();

            wxPoint center = GetParent()->GetScrollCenterPosition();
            center.x += KiROUND( (double) ( x - tmpX ) / scale ) / ppux;
            center.y += KiROUND( (double) ( y - tmpY ) / scale ) / ppuy;
            GetParent()->SetScrollCenterPosition( center );

            Refresh();
            Update();
        }
        else
        {
            double scale = GetParent()->GetScreen()->GetScalingFactor();
            int x = m_PanStartCenter.x +
                    KiROUND( (double) ( m_PanStartEventPosition.x - currentPosition.x ) / scale );
            int y = m_PanStartCenter.y +
                    KiROUND( (double) ( m_PanStartEventPosition.y - currentPosition.y ) / scale );

            GetParent()->RedrawScreen( wxPoint( x, y ), false );
        }
    }

    if( event.ButtonUp( wxMOUSE_BTN_MIDDLE ) && !m_enableMiddleButtonPan &&
        (screen->m_BlockLocate.GetState() == STATE_NO_BLOCK) )
    {
        // The middle button has been released, with no block command:
        // We use it for a zoom center at cursor position command
        wxCommandEvent cmd( wxEVT_COMMAND_MENU_SELECTED, ID_POPUP_ZOOM_CENTER );
        cmd.SetEventObject( this );
        GetEventHandler()->ProcessEvent( cmd );
    }

    // Calling the general function on mouse changes (and pseudo key commands)
    GetParent()->GeneralControl( &DC, event.GetLogicalPosition( DC ), 0 );

    /*******************************/

void D_PAD::TransformShapeWithClearanceToPolygon(
        SHAPE_POLY_SET& aCornerBuffer, int aClearanceValue, int aError, bool ignoreLineWidth ) const
{
    wxASSERT_MSG( !ignoreLineWidth, "IgnoreLineWidth has no meaning for pads." );

    double  angle = m_Orient;
    int     dx = (m_Size.x / 2) + aClearanceValue;
    int     dy = (m_Size.y / 2) + aClearanceValue;

    wxPoint padShapePos = ShapePos();               /* Note: for pad having a shape offset,
                                                     * the pad position is NOT the shape position */

    switch( GetShape() )
    {
    case PAD_SHAPE_CIRCLE:
    {
        TransformCircleToPolygon( aCornerBuffer, padShapePos, dx, aError );
    }
        break;

    case PAD_SHAPE_OVAL:
        // An oval pad has the same shape as a segment with rounded ends
        {
        int width;
        wxPoint shape_offset;
        if( dy > dx )   // Oval pad X/Y ratio for choosing translation axis
        {
            shape_offset.y = dy - dx;
            width = dx * 2;
        }
        else    //if( dy <= dx )
        {
            shape_offset.x = dy - dx;
            width = dy * 2;
        }

        RotatePoint( &shape_offset, angle );
        wxPoint start = padShapePos - shape_offset;
        wxPoint end = padShapePos + shape_offset;
        TransformOvalClearanceToPolygon( aCornerBuffer, start, end, width, aError );
        }
        break;

    case PAD_SHAPE_TRAPEZOID:
    case PAD_SHAPE_RECT:
    {
        wxPoint corners[4];
        BuildPadPolygon( corners, wxSize( 0, 0 ), angle );

        SHAPE_POLY_SET outline;
        outline.NewOutline();

        for( int ii = 0; ii < 4; ii++ )
        {
            corners[ii] += padShapePos;
            outline.Append( corners[ii].x, corners[ii].y );
        }

        int    numSegs = std::max( GetArcToSegmentCount( aClearanceValue, aError, 360.0 ), 6 );
        double correction = GetCircletoPolyCorrectionFactor( numSegs );

        int rounding_radius = KiROUND( aClearanceValue * correction );
        outline.Inflate( rounding_radius, numSegs );

        aCornerBuffer.Append( outline );
    }
        break;

    case PAD_SHAPE_CHAMFERED_RECT:
    case PAD_SHAPE_ROUNDRECT:
    {
        SHAPE_POLY_SET outline;
        int            radius = GetRoundRectCornerRadius() + aClearanceValue;
        int            numSegs = std::max( GetArcToSegmentCount( radius, aError, 360.0 ), 6 );
        double         correction = GetCircletoPolyCorrectionFactor( numSegs );
        int            clearance = KiROUND( aClearanceValue * correction );
        int            rounding_radius = GetRoundRectCornerRadius() + clearance;
        wxSize         shapesize( m_Size );

        shapesize.x += clearance * 2;
        shapesize.y += clearance * 2;
        bool doChamfer = GetShape() == PAD_SHAPE_CHAMFERED_RECT;

        TransformRoundChamferedRectToPolygon( outline, padShapePos, shapesize, angle,
                rounding_radius, doChamfer ? GetChamferRectRatio() : 0.0,
                doChamfer ? GetChamferPositions() : 0, aError );

        aCornerBuffer.Append( outline );
    }
        break;

    case PAD_SHAPE_CUSTOM:
    {
        int    numSegs = std::max( GetArcToSegmentCount( aClearanceValue, aError, 360.0 ), 6 );
        double correction = GetCircletoPolyCorrectionFactor( numSegs );
        int    clearance = KiROUND( aClearanceValue * correction );
        SHAPE_POLY_SET outline;     // Will contain the corners in board coordinates
        outline.Append( m_customShapeAsPolygon );
        CustomShapeAsPolygonToBoardPosition( &outline, GetPosition(), GetOrientation() );
        outline.Simplify( SHAPE_POLY_SET::PM_FAST );
//.........这里部分代码省略.........

/* test DRC between 2 pads.
 * this function can be also used to test DRC between a pad and a hole,
 * because a hole is like a round or oval pad.
 */
bool DRC::checkClearancePadToPad( D_PAD* aRefPad, D_PAD* aPad )
{
    int     dist;
    double pad_angle;

    // Get the clearance between the 2 pads. this is the min distance between aRefPad and aPad
    int     dist_min = aRefPad->GetClearance( aPad );

    // relativePadPos is the aPad shape position relative to the aRefPad shape position
    wxPoint relativePadPos = aPad->ShapePos() - aRefPad->ShapePos();

    dist = KiROUND( EuclideanNorm( relativePadPos ) );

    // Quick test: Clearance is OK if the bounding circles are further away than "dist_min"
    if( (dist - aRefPad->GetBoundingRadius() - aPad->GetBoundingRadius()) >= dist_min )
        return true;

    /* Here, pads are near and DRC depend on the pad shapes
     * We must compare distance using a fine shape analysis
     * Because a circle or oval shape is the easier shape to test, try to have
     * aRefPad shape type = PAD_SHAPE_CIRCLE or PAD_SHAPE_OVAL.
     * if aRefPad = TRAP. and aPad = RECT, also swap pads
     * Swap aRefPad and aPad if needed
     */
    bool swap_pads;
    swap_pads = false;

    // swap pads to make comparisons easier
    // Note also a ROUNDRECT pad with a corner radius = r can be considered as
    // a smaller RECT (size - 2*r) with a clearance increased by r
    // priority is aRefPad = ROUND then OVAL then RECT/ROUNDRECT then other
    if( aRefPad->GetShape() != aPad->GetShape() && aRefPad->GetShape() != PAD_SHAPE_CIRCLE )
    {
        // pad ref shape is here oval, rect, roundrect, trapezoid or custom
        switch( aPad->GetShape() )
        {
            case PAD_SHAPE_CIRCLE:
                swap_pads = true;
                break;

            case PAD_SHAPE_OVAL:
                swap_pads = true;
                break;

            case PAD_SHAPE_RECT:
            case PAD_SHAPE_ROUNDRECT:
                if( aRefPad->GetShape() != PAD_SHAPE_OVAL )
                    swap_pads = true;
                break;

            default:
                break;
        }
    }

    if( swap_pads )
    {
        std::swap( aRefPad, aPad );
        relativePadPos = -relativePadPos;
    }

    // corners of aRefPad (used only for rect/roundrect/trap pad)
    wxPoint polyref[4];
    // corners of aRefPad (used only for custom pad)
    SHAPE_POLY_SET polysetref;

    // corners of aPad (used only for rect/roundrect/trap pad)
    wxPoint polycompare[4];
    // corners of aPad (used only custom pad)
    SHAPE_POLY_SET polysetcompare;

    /* Because pad exchange, aRefPad shape is PAD_SHAPE_CIRCLE or PAD_SHAPE_OVAL,
     * if one of the 2 pads was a PAD_SHAPE_CIRCLE or PAD_SHAPE_OVAL.
     * Therefore, if aRefPad is a PAD_SHAPE_RECT, PAD_SHAPE_ROUNDRECT or a PAD_SHAPE_TRAPEZOID,
     * aPad is also a PAD_SHAPE_RECT, PAD_SHAPE_ROUNDRECT or a PAD_SHAPE_TRAPEZOID
     */
    bool diag = true;

    switch( aRefPad->GetShape() )
    {
    case PAD_SHAPE_CIRCLE:

        /* One can use checkClearanceSegmToPad to test clearance
         * aRefPad is like a track segment with a null length and a witdth = GetSize().x
         */
        m_segmLength = 0;
        m_segmAngle  = 0;

        m_segmEnd.x = m_segmEnd.y = 0;

        m_padToTestPos = relativePadPos;
        diag = checkClearanceSegmToPad( aPad, aRefPad->GetSize().x, dist_min );
        break;

    case PAD_SHAPE_TRAPEZOID:
    case PAD_SHAPE_ROUNDRECT:
//.........这里部分代码省略.........

void HPGL_PLOTTER::FlashPadTrapez( const wxPoint& aPadPos, const wxPoint* aCorners,
                                   double aPadOrient, EDA_DRAW_MODE_T aTrace_Mode )
{
    wxASSERT( outputFile );
    wxPoint polygone[4];        // coordinates of corners relatives to the pad
    wxPoint coord[4];           // absolute coordinates of corners (coordinates in plotter space)
    int     move;

    move = KiROUND( penDiameter );

    for( int ii = 0; ii < 4; ii++ )
        polygone[ii] = aCorners[ii];

    // polygone[0] is assumed the lower left
    // polygone[1] is assumed the upper left
    // polygone[2] is assumed the upper right
    // polygone[3] is assumed the lower right

    // Plot the outline:
    for( int ii = 0; ii < 4; ii++ )
    {
        coord[ii] = polygone[ii];
        RotatePoint( &coord[ii], aPadOrient );
        coord[ii] += aPadPos;
    }

    MoveTo( coord[0] );
    LineTo( coord[1] );
    LineTo( coord[2] );
    LineTo( coord[3] );
    FinishTo( coord[0] );

    // Fill shape:
    if( aTrace_Mode == FILLED )
    {
        // TODO: replace this par the HPGL plot polygon.
        int jj;
        // Fill the shape
        move = KiROUND( penDiameter - penOverlap );
        // Calculate fill height.

        if( polygone[0].y == polygone[3].y )    // Horizontal
        {
            jj = polygone[3].y - (int) ( penDiameter + ( 2 * penOverlap ) );
        }
        else    // vertical
        {
            jj = polygone[3].x - (int) ( penDiameter + ( 2 * penOverlap ) );
        }

        // Calculation of dd = number of segments was traced to fill.
        jj = jj / (int) ( penDiameter - penOverlap );

        // Trace the outline.
        for( ; jj > 0; jj-- )
        {
            polygone[0].x   += move;
            polygone[0].y   -= move;
            polygone[1].x   += move;
            polygone[1].y   += move;
            polygone[2].x   -= move;
            polygone[2].y   += move;
            polygone[3].x   -= move;
            polygone[3].y   -= move;

            // Test for crossed vertexes.
            if( polygone[0].x > polygone[3].x )    /* X axis intersection on
                                                    * vertexes 0 and 3 */
            {
                polygone[0].x = polygone[3].x = 0;
            }

            if( polygone[1].x > polygone[2].x )    /*  X axis intersection on
                                                    * vertexes 1 and 2 */
            {
                polygone[1].x = polygone[2].x = 0;
            }

            if( polygone[1].y > polygone[0].y )    /* Y axis intersection on
                                                    * vertexes 0 and 1 */
            {
                polygone[0].y = polygone[1].y = 0;
            }

            if( polygone[2].y > polygone[3].y )    /* Y axis intersection on
                                                    * vertexes 2 and 3 */
            {
                polygone[2].y = polygone[3].y = 0;
            }

            for( int ii = 0; ii < 4; ii++ )
            {
                coord[ii] = polygone[ii];
                RotatePoint( &coord[ii], aPadOrient );
                coord[ii] += aPadPos;
            }

            MoveTo( coord[0] );
            LineTo( coord[1] );
            LineTo( coord[2] );
//.........这里部分代码省略.........

void EDA_DRAW_FRAME::AdjustScrollBars( const wxPoint& aCenterPositionIU )
{
    BASE_SCREEN* screen = GetScreen();

    if( !screen || !m_canvas )
        return;

    double scale = screen->GetScalingFactor();

    wxLogTrace( traceScrollSettings, wxT( "Center Position = ( %d, %d ), scale = %.10g" ),
                aCenterPositionIU.x, aCenterPositionIU.y, scale );

    // Calculate the portion of the drawing that can be displayed in the
    // client area at the current zoom level.

    // visible viewport in device units ~ pixels
    wxSize  clientSizeDU = m_canvas->GetClientSize();

    // Size of the client window in IU
    DSIZE   clientSizeIU( clientSizeDU.x / scale, clientSizeDU.y / scale );

    // Full drawing or "page" rectangle in internal units
    DBOX    pageRectIU( wxPoint( 0, 0 ), wxSize( GetPageSizeIU().x, GetPageSizeIU().y ) );

    // The upper left corner of the client rectangle in internal units.
    double xIU = aCenterPositionIU.x - clientSizeIU.x / 2.0;
    double yIU = aCenterPositionIU.y - clientSizeIU.y / 2.0;

    // If drawn around the center, adjust the client rectangle accordingly.
    if( screen->m_Center )
    {
        // half page offset.
        xIU += pageRectIU.GetWidth()  / 2.0;
        yIU += pageRectIU.GetHeight() / 2.0;
    }

    DBOX    clientRectIU( wxPoint( xIU, yIU ), wxSize( clientSizeIU.x, clientSizeIU.y ) );
    wxPoint centerPositionIU;

    // put "int" limits on the clientRect
    if( clientRectIU.GetLeft() < VIRT_MIN )
        clientRectIU.MoveLeftTo( VIRT_MIN );
    if( clientRectIU.GetTop() < VIRT_MIN )
        clientRectIU.MoveTopTo( VIRT_MIN );
    if( clientRectIU.GetRight() > VIRT_MAX )
        clientRectIU.MoveRightTo( VIRT_MAX );
    if( clientRectIU.GetBottom() > VIRT_MAX )
        clientRectIU.MoveBottomTo( VIRT_MAX );

    centerPositionIU.x = KiROUND( clientRectIU.GetX() + clientRectIU.GetWidth() / 2 );
    centerPositionIU.y = KiROUND( clientRectIU.GetY() + clientRectIU.GetHeight() / 2 );

    if( screen->m_Center )
    {
        centerPositionIU.x -= KiROUND( pageRectIU.GetWidth() / 2.0 );
        centerPositionIU.y -= KiROUND( pageRectIU.GetHeight() / 2.0 );
    }

    DSIZE   virtualSizeIU;

    if( pageRectIU.GetLeft() < clientRectIU.GetLeft() && pageRectIU.GetRight() > clientRectIU.GetRight() )
    {
        virtualSizeIU.x = pageRectIU.GetSize().x;
    }
    else
    {
        double pageCenterX    = pageRectIU.GetX()   + ( pageRectIU.GetWidth() / 2 );
        double clientCenterX  = clientRectIU.GetX() + ( clientRectIU.GetWidth() / 2 );

        if( clientRectIU.GetWidth() > pageRectIU.GetWidth() )
        {
            if( pageCenterX > clientCenterX )
                virtualSizeIU.x = ( pageCenterX - clientRectIU.GetLeft() ) * 2;
            else if( pageCenterX < clientCenterX )
                virtualSizeIU.x = ( clientRectIU.GetRight() - pageCenterX ) * 2;
            else
                virtualSizeIU.x = clientRectIU.GetWidth();
        }
        else
        {
            if( pageCenterX > clientCenterX )
                virtualSizeIU.x = pageRectIU.GetWidth() + ( (pageRectIU.GetLeft() - clientRectIU.GetLeft() ) * 2 );
            else if( pageCenterX < clientCenterX )
                virtualSizeIU.x = pageRectIU.GetWidth() + ( (clientRectIU.GetRight() - pageRectIU.GetRight() ) * 2 );
            else
                virtualSizeIU.x = pageRectIU.GetWidth();
        }
    }

    if( pageRectIU.GetTop() < clientRectIU.GetTop() && pageRectIU.GetBottom() > clientRectIU.GetBottom() )
    {
        virtualSizeIU.y = pageRectIU.GetSize().y;
    }
    else
    {
        double pageCenterY   = pageRectIU.GetY()   + ( pageRectIU.GetHeight() / 2 );
        double clientCenterY = clientRectIU.GetY() + ( clientRectIU.GetHeight() / 2 );

        if( clientRectIU.GetHeight() > pageRectIU.GetHeight() )
        {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                 */
                if( pad->GetDrillSize().x == 0 && pad->GetDrillSize().y == 0 )
                    continue;

                // Use a dummy pad to calculate a hole shape that have the same dimension as
                // the pad hole
                dummypad.SetSize( pad->GetDrillSize() );
                dummypad.SetOrientation( pad->GetOrientation() );
                dummypad.SetShape( pad->GetDrillShape() == PAD_DRILL_SHAPE_OBLONG ?
                        PAD_SHAPE_OVAL : PAD_SHAPE_CIRCLE );
                dummypad.SetPosition( pad->GetPosition() );

                pad = &dummypad;
            }

            // Note: netcode <=0 means not connected item
            if( ( pad->GetNetCode() != aZone->GetNetCode() ) || ( pad->GetNetCode() <= 0 ) )
            {
                int item_clearance = pad->GetClearance() + outline_half_thickness;
                item_boundingbox = pad->GetBoundingBox();
                item_boundingbox.Inflate( item_clearance );

                if( item_boundingbox.Intersects( zone_boundingbox ) )
                {
                    int clearance = std::max( zone_clearance, item_clearance );

                    // PAD_SHAPE_CUSTOM can have a specific keepout, to avoid to break the shape
                    if( pad->GetShape() == PAD_SHAPE_CUSTOM
                        && pad->GetCustomShapeInZoneOpt() == CUST_PAD_SHAPE_IN_ZONE_CONVEXHULL )
                    {
                        // the pad shape in zone can be its convex hull or
                        // the shape itself
                        SHAPE_POLY_SET outline( pad->GetCustomShapeAsPolygon() );
                        outline.Inflate( KiROUND( clearance * correctionFactor ), segsPerCircle );
                        pad->CustomShapeAsPolygonToBoardPosition( &outline,
                                pad->GetPosition(), pad->GetOrientation() );

                        if( pad->GetCustomShapeInZoneOpt() == CUST_PAD_SHAPE_IN_ZONE_CONVEXHULL )
                        {
                            std::vector<wxPoint> convex_hull;
                            BuildConvexHull( convex_hull, outline );

                            aFeatures.NewOutline();

                            for( unsigned ii = 0; ii < convex_hull.size(); ++ii )
                                aFeatures.Append( convex_hull[ii] );
                        }
                        else
                            aFeatures.Append( outline );
                    }
                    else
                        pad->TransformShapeWithClearanceToPolygon( aFeatures,
                                clearance,
                                segsPerCircle,
                                correctionFactor );
                }

                continue;
            }

            // Pads are removed from zone if the setup is PAD_ZONE_CONN_NONE
            // or if they have a custom shape, because a thermal relief will break
            // the shape
            if( aZone->GetPadConnection( pad ) == PAD_ZONE_CONN_NONE
                || pad->GetShape() == PAD_SHAPE_CUSTOM )
            {

/**
 * Function ConvertShapeToPolygon (virtual)
 * convert a shape to an equivalent polygon.
 * Arcs and circles are approximated by segments
 * Useful when a shape is not a graphic primitive (shape with hole,
 * rotated shape ... ) and cannot be easily drawn.
 * note for some schapes conbining circles and solid lines (rectangles), only rectangles are converted
 * because circles are very easy to draw (no rotation problem) so convert them in polygons,
 * and draw them as polygons is not a good idea.
 */
void AM_PRIMITIVE::ConvertShapeToPolygon( const GERBER_DRAW_ITEM* aParent,
                                          std::vector<wxPoint>& aBuffer )
{
    D_CODE* tool = aParent->GetDcodeDescr();

    switch( primitive_id )
    {
    case AMP_CIRCLE:
    {
        /* Generated by an aperture macro declaration like:
         * "1,1,0.3,0.5, 1.0*"
         * type (1), exposure, diameter, pos.x, pos.y, <rotation>
         * <rotation> is a optional parameter: rotation from origin.
         * type is not stored in parameters list, so the first parameter is exposure
         */
        wxPoint center = mapPt( params[2].GetValue( tool ), params[3].GetValue( tool ), m_GerbMetric );
        int radius = scaletoIU( params[1].GetValue( tool ), m_GerbMetric ) / 2;
        wxPoint corner;
        const int delta = 3600 / seg_per_circle;    // rot angle in 0.1 degree

        for( int angle = 0; angle < 3600; angle += delta )
        {
            corner.x   = radius;
            corner.y   = 0;
            RotatePoint( &corner, angle );
            corner += center;
            aBuffer.push_back( corner );
        }
    }
        break;

    case AMP_LINE2:
    case AMP_LINE20:        // Line with rectangle ends. (Width, start and end pos + rotation)
    {
        int     width = scaletoIU( params[1].GetValue( tool ), m_GerbMetric );
        wxPoint start = mapPt( params[2].GetValue( tool ),
                               params[3].GetValue( tool ), m_GerbMetric );
        wxPoint end = mapPt( params[4].GetValue( tool ),
                             params[5].GetValue( tool ), m_GerbMetric );
        wxPoint delta = end - start;
        int     len   = KiROUND( EuclideanNorm( delta ) );

        // To build the polygon, we must create a horizontal polygon starting to "start"
        // and rotate it to have the end point to "end"
        wxPoint currpt;
        currpt.y += width / 2;          // Upper left
        aBuffer.push_back( currpt );
        currpt.x = len;                 // Upper right
        aBuffer.push_back( currpt );
        currpt.y -= width;              // lower right
        aBuffer.push_back( currpt );
        currpt.x = 0;                   // lower left
        aBuffer.push_back( currpt );

        // Rotate rectangle and move it to the actual start point
        double angle = ArcTangente( delta.y, delta.x );

        for( unsigned ii = 0; ii < 4; ii++ )
        {
            RotatePoint( &aBuffer[ii], -angle );
            aBuffer[ii] += start;
        }
    }
        break;

    case AMP_LINE_CENTER:
    {
        wxPoint size = mapPt( params[1].GetValue( tool ), params[2].GetValue( tool ), m_GerbMetric );
        wxPoint pos  = mapPt( params[3].GetValue( tool ), params[4].GetValue( tool ), m_GerbMetric );

        // Build poly:
        pos.x -= size.x / 2;
        pos.y -= size.y / 2;        // Lower left
        aBuffer.push_back( pos );
        pos.y += size.y;            // Upper left
        aBuffer.push_back( pos );
        pos.x += size.x;            // Upper right
        aBuffer.push_back( pos );
        pos.y -= size.y;            // lower right
        aBuffer.push_back( pos );
    }
    break;

    case AMP_LINE_LOWER_LEFT:
    {
        wxPoint size = mapPt( params[1].GetValue( tool ), params[2].GetValue( tool ), m_GerbMetric );
        wxPoint lowerLeft = mapPt( params[3].GetValue( tool ), params[4].GetValue(
                                       tool ), m_GerbMetric );

        // Build poly:
//.........这里部分代码省略.........

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_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_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_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( m_DeltaSize.y, 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( m_DeltaSize.x, 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
        }
//.........这里部分代码省略.........

void DIMENSION::AdjustDimensionDetails( bool aDoNotChangeText )
{
    const int   arrowz = DMils2iu( 500 );           // size of arrows
    int         ii;
    int         measure, deltax, deltay;            // value of the measure on X and Y axes
    int         arrow_up_X  = 0, arrow_up_Y = 0;    // coordinates of arrow line /
    int         arrow_dw_X  = 0, arrow_dw_Y = 0;    // coordinates of arrow line '\'
    int         hx, hy;                             // dimension line interval
    double      angle, angle_f;
    wxString    msg;

    // Init layer :
    m_Text.SetLayer( GetLayer() );

    // calculate the size of the dimension (text + line above the text)
    ii = m_Text.GetSize().y + m_Text.GetThickness() + (m_Width * 3);

    deltax  = m_featureLineDO.x - m_featureLineGO.x;
    deltay  = m_featureLineDO.y - m_featureLineGO.y;

    // Calculate dimension value
    measure = KiROUND( hypot( deltax, deltay ) );

    angle = atan2( deltay, deltax );

    // Calculation of parameters X and Y dimensions of the arrows and lines.
    hx = hy = ii;

    // Taking into account the slope of the side lines.
    if( measure )
    {
        hx  = abs( KiROUND( ( (double) deltay * hx ) / measure ) );
        hy  = abs( KiROUND( ( (double) deltax * hy ) / measure ) );

        if( m_featureLineGO.x > m_crossBarO.x )
            hx = -hx;

        if( m_featureLineGO.x == m_crossBarO.x )
            hx = 0;

        if( m_featureLineGO.y > m_crossBarO.y )
            hy = -hy;

        if( m_featureLineGO.y == m_crossBarO.y )
            hy = 0;

        angle_f     = angle + DEG2RAD( 27.5 );
        arrow_up_X  = wxRound( arrowz * cos( angle_f ) );
        arrow_up_Y  = wxRound( arrowz * sin( angle_f ) );
        angle_f     = angle - DEG2RAD( 27.5 );
        arrow_dw_X  = wxRound( arrowz * cos( angle_f ) );
        arrow_dw_Y  = wxRound( arrowz * sin( angle_f ) );
    }

    int dx = KiROUND( m_Height * cos( angle + M_PI / 2 ) );
    int dy = KiROUND( m_Height * sin( angle + M_PI / 2 ) );
    m_crossBarO.x   = m_featureLineGO.x + dx;
    m_crossBarO.y   = m_featureLineGO.y + dy;
    m_crossBarF.x   = m_featureLineDO.x + dx;
    m_crossBarF.y   = m_featureLineDO.y + dy;

    m_arrowG1F.x    = m_crossBarO.x + arrow_up_X;
    m_arrowG1F.y    = m_crossBarO.y + arrow_up_Y;

    m_arrowG2F.x    = m_crossBarO.x + arrow_dw_X;
    m_arrowG2F.y    = m_crossBarO.y + arrow_dw_Y;

    /* The right arrow is symmetrical to the left.
     *  / = -\  and  \ = -/
     */
    m_arrowD1F.x    = m_crossBarF.x - arrow_dw_X;
    m_arrowD1F.y    = m_crossBarF.y - arrow_dw_Y;

    m_arrowD2F.x    = m_crossBarF.x - arrow_up_X;
    m_arrowD2F.y    = m_crossBarF.y - arrow_up_Y;

    m_featureLineGF.x   = m_crossBarO.x + hx;
    m_featureLineGF.y   = m_crossBarO.y + hy;

    m_featureLineDF.x   = m_crossBarF.x + hx;
    m_featureLineDF.y   = m_crossBarF.y + hy;

    // Calculate the better text position and orientation:
    wxPoint textPos;
    textPos.x  = (m_crossBarF.x + m_featureLineGF.x) / 2;
    textPos.y  = (m_crossBarF.y + m_featureLineGF.y) / 2;
    m_Text.SetTextPosition( textPos );

    double newAngle = -RAD2DECIDEG( angle );

    NORMALIZE_ANGLE_POS( newAngle );

    if( newAngle > 900  &&  newAngle < 2700 )
        newAngle -= 1800;

    m_Text.SetOrientation( newAngle );

    if( !aDoNotChangeText )
    {
        m_Value = measure;
//.........这里部分代码省略.........

// draw a 3D grid: an horizontal grid (XY plane and Z = 0,
// and a vertical grid (XZ plane and Y = 0)
void EDA_3D_CANVAS::Draw3DGrid( double aGriSizeMM )
{
    double      zpos = 0.0;
    EDA_COLOR_T gridcolor = DARKGRAY;           // Color of grid lines
    EDA_COLOR_T gridcolor_marker = LIGHTGRAY;   // Color of grid lines every 5 lines
    const double scale = GetPrm3DVisu().m_BiuTo3Dunits;
    const double transparency = 0.3;

    glNormal3f( 0.0, 0.0, 1.0 );

    wxSize  brd_size = getBoardSize();
    wxPoint brd_center_pos = getBoardCenter();
    NEGATE( brd_center_pos.y );

    int     xsize   = std::max( brd_size.x, Millimeter2iu( 100 ) );
    int     ysize   = std::max( brd_size.y, Millimeter2iu( 100 ) );

    // Grid limits, in 3D units
    double  xmin    = (brd_center_pos.x - xsize / 2) * scale;
    double  xmax    = (brd_center_pos.x + xsize / 2) * scale;
    double  ymin    = (brd_center_pos.y - ysize / 2) * scale;
    double  ymax    = (brd_center_pos.y + ysize / 2) * scale;
    double  zmin    = Millimeter2iu( -50 ) * scale;
    double  zmax    = Millimeter2iu( 100 ) * scale;

    // Draw horizontal grid centered on 3D origin (center of the board)
    for( int ii = 0; ; ii++ )
    {
        if( (ii % 5) )
            SetGLColor( gridcolor, transparency );
        else
            SetGLColor( gridcolor_marker, transparency );

        int delta = KiROUND( ii * aGriSizeMM * IU_PER_MM );

        if( delta <= xsize / 2 )    // Draw grid lines parallel to X axis
        {
            glBegin( GL_LINES );
            glVertex3f( (brd_center_pos.x + delta) * scale, -ymin, zpos );
            glVertex3f( (brd_center_pos.x + delta) * scale, -ymax, zpos );
            glEnd();

            if( ii != 0 )
            {
                glBegin( GL_LINES );
                glVertex3f( (brd_center_pos.x - delta) * scale, -ymin, zpos );
                glVertex3f( (brd_center_pos.x - delta) * scale, -ymax, zpos );
                glEnd();
            }
        }

        if( delta <= ysize / 2 )    // Draw grid lines parallel to Y axis
        {
            glBegin( GL_LINES );
            glVertex3f( xmin, -(brd_center_pos.y + delta) * scale, zpos );
            glVertex3f( xmax, -(brd_center_pos.y + delta) * scale, zpos );
            glEnd();

            if( ii != 0 )
            {
                glBegin( GL_LINES );
                glVertex3f( xmin, -(brd_center_pos.y - delta) * scale, zpos );
                glVertex3f( xmax, -(brd_center_pos.y - delta) * scale, zpos );
                glEnd();
            }
        }

        if( ( delta > ysize / 2 ) && ( delta > xsize / 2 ) )
            break;
    }

    // Draw vertical grid n Z axis
    glNormal3f( 0.0, -1.0, 0.0 );

    // Draw vertical grid lines (parallel to Z axis)
    for( int ii = 0; ; ii++ )
    {
        if( (ii % 5) )
            SetGLColor( gridcolor, transparency );
        else
            SetGLColor( gridcolor_marker, transparency );

        double delta = ii * aGriSizeMM * IU_PER_MM;

        glBegin( GL_LINES );
        glVertex3f( (brd_center_pos.x + delta) * scale, -brd_center_pos.y * scale, zmin );
        glVertex3f( (brd_center_pos.x + delta) * scale, -brd_center_pos.y * scale, zmax );
        glEnd();

        if( ii != 0 )
        {
            glBegin( GL_LINES );
            glVertex3f( (brd_center_pos.x - delta) * scale, -brd_center_pos.y * scale, zmin );
            glVertex3f( (brd_center_pos.x - delta) * scale, -brd_center_pos.y * scale, zmax );
            glEnd();
        }

        if( delta > xsize / 2.0f )
//.........这里部分代码省略.........

void PDF_PLOTTER::Text( const wxPoint&              aPos,
                        enum EDA_COLOR_T            aColor,
                        const wxString&             aText,
                        double                      aOrient,
                        const wxSize&               aSize,
                        enum EDA_TEXT_HJUSTIFY_T    aH_justify,
                        enum EDA_TEXT_VJUSTIFY_T    aV_justify,
                        int                         aWidth,
                        bool                        aItalic,
                        bool                        aBold,
                        bool                        aMultilineAllowed )
{
    // PDF files do not like 0 sized texts which create broken files.
    if( aSize.x == 0 || aSize.y == 0 )
        return;

    // Fix me: see how to use PDF text mode for multiline texts
    if( aMultilineAllowed && !aText.Contains( wxT( "\n" ) ) )
        aMultilineAllowed = false;  // the text has only one line.

    // Emit native PDF text (if requested)
    if( m_textMode != PLOTTEXTMODE_STROKE && !aMultilineAllowed )
    {
        const char *fontname = aItalic ? (aBold ? "/KicadFontBI" : "/KicadFontI")
            : (aBold ? "/KicadFontB" : "/KicadFont");

        // Compute the copious tranformation parameters
        double ctm_a, ctm_b, ctm_c, ctm_d, ctm_e, ctm_f;
        double wideningFactor, heightFactor;
        computeTextParameters( aPos, aText, aOrient, aSize, aH_justify,
                aV_justify, aWidth, aItalic, aBold,
                &wideningFactor, &ctm_a, &ctm_b, &ctm_c,
                &ctm_d, &ctm_e, &ctm_f, &heightFactor );

        SetColor( aColor );
        SetCurrentLineWidth( aWidth );

        /* We use the full CTM instead of the text matrix because the same
           coordinate system will be used for the overlining. Also the %f
           for the trig part of the matrix to avoid %g going in exponential
           format (which is not supported)
           Rendermode 0 shows the text, rendermode 3 is invisible */
        fprintf( workFile, "q %f %f %f %f %g %g cm BT %s %g Tf %d Tr %g Tz ",
                ctm_a, ctm_b, ctm_c, ctm_d, ctm_e, ctm_f,
                fontname, heightFactor,
                (m_textMode == PLOTTEXTMODE_NATIVE) ? 0 : 3,
                wideningFactor * 100 );

        // The text must be escaped correctly
        fputsPostscriptString( workFile, aText );
        fputs( " Tj ET\n", workFile );

        /* We are still in text coordinates, plot the overbars (if we're
         * not doing phantom text) */
        if( m_textMode == PLOTTEXTMODE_NATIVE )
        {
            std::vector<int> pos_pairs;
            postscriptOverlinePositions( aText, aSize.x, aItalic, aBold, &pos_pairs );
            int overbar_y = KiROUND( aSize.y * 1.1 );
            for( unsigned i = 0; i < pos_pairs.size(); i += 2)
            {
                /* This is a nontrivial situation: we are *not* in the user
                   coordinate system, so the userToDeviceCoordinates function
                   can't be used! Strange as it may seem, the userToDeviceSize
                   is the right function to use here... */
                DPOINT dev_from = userToDeviceSize( wxSize( pos_pairs[i], overbar_y ) );
                DPOINT dev_to = userToDeviceSize( wxSize( pos_pairs[i + 1], overbar_y ) );
                fprintf( workFile, "%g %g m %g %g l ",
                        dev_from.x, dev_from.y, dev_to.x, dev_to.y );
            }
        }

        // Stroke and restore the CTM
        fputs( "S Q\n", workFile );
    }

    // Plot the stroked text (if requested)
    if( m_textMode != PLOTTEXTMODE_NATIVE || aMultilineAllowed )
    {
        PLOTTER::Text( aPos, aColor, aText, aOrient, aSize, aH_justify, aV_justify,
                aWidth, aItalic, aBold, aMultilineAllowed );
    }
}

void EDA_DRAW_PANEL::OnScroll( wxScrollWinEvent& event )
{
    int id = event.GetEventType();
    int x, y;
    int ppux, ppuy;
    int csizeX, csizeY;
    int unitsX, unitsY;

    GetViewStart( &x, &y );
    GetScrollPixelsPerUnit( &ppux, &ppuy );
    GetClientSize( &csizeX, &csizeY );
    GetVirtualSize( &unitsX, &unitsY );

    int tmpX = x;
    int tmpY = y;

    csizeX /= ppux;
    csizeY /= ppuy;

    unitsX /= ppux;
    unitsY /= ppuy;

    int dir = event.GetOrientation();   // wxHORIZONTAL or wxVERTICAL

    // On windows and on wxWidgets >= 2.9.5 and < 3.1,
    // there is a bug in mousewheel event which always generates 2 scroll events
    // (should be the case only for the default mousewheel event)
    // with id = wxEVT_SCROLLWIN_LINEUP or wxEVT_SCROLLWIN_LINEDOWN
    // so we skip these events.
    // Note they are here just in case, because they are not actually used
    // in Kicad
#if wxCHECK_VERSION( 3, 1, 0 ) || !wxCHECK_VERSION( 2, 9, 5 ) || !defined (__WINDOWS__)
    int maxX = unitsX - csizeX;
    int maxY = unitsY - csizeY;

    if( id == wxEVT_SCROLLWIN_LINEUP )
    {
        if( dir == wxHORIZONTAL )
        {
            x -= m_scrollIncrementX;

            if( x < 0 )
                x = 0;
        }
        else
        {
            y -= m_scrollIncrementY;

            if( y < 0 )
                y = 0;
        }
    }
    else if( id == wxEVT_SCROLLWIN_LINEDOWN )
    {
        if( dir == wxHORIZONTAL )
        {
            x += m_scrollIncrementX;
            if( x > maxX )
                x = maxX;
        }
        else
        {
            y += m_scrollIncrementY;

            if( y > maxY )
                y = maxY;
        }
    }
    else
#endif
    if( id == wxEVT_SCROLLWIN_THUMBTRACK )
    {
        if( dir == wxHORIZONTAL )
            x = event.GetPosition();
        else
            y = event.GetPosition();
    }
    else
    {
        event.Skip();
        return;
    }

    wxLogTrace( KICAD_TRACE_COORDS,
                wxT( "Setting scroll bars ppuX=%d, ppuY=%d, unitsX=%d, unitsY=%d, posX=%d, posY=%d" ),
                ppux, ppuy, unitsX, unitsY, x, y );

    double scale = GetParent()->GetScreen()->GetScalingFactor();

    wxPoint center = GetParent()->GetScrollCenterPosition();
    center.x += KiROUND( (double) ( x - tmpX ) / scale );
    center.y += KiROUND( (double) ( y - tmpY ) / scale );
    GetParent()->SetScrollCenterPosition( center );

    Scroll( x, y );
    event.Skip();
}

//.........这里部分代码省略.........
        {
            subshape_poly = polybuffer;
            double sub_rotation = rotation + 900 * ii;
            for( unsigned jj = 0; jj < subshape_poly.size(); jj++ )
                RotatePoint( &subshape_poly[jj], -sub_rotation );

            // Move to current position:
            for( unsigned jj = 0; jj < subshape_poly.size(); jj++ )
            {
                subshape_poly[jj] += curPos;
                subshape_poly[jj] = aParent->GetABPosition( subshape_poly[jj] );
            }

            GRClosedPoly( aClipBox, aDC,
                          subshape_poly.size(), &subshape_poly[0], true, aAltColor,
                          aAltColor );
        }
    }
    break;

    case AMP_MOIRE:     // A cross hair with n concentric circles
    {
        curPos += mapPt( params[0].GetValue( tool ), params[1].GetValue( tool ),
                         m_GerbMetric );

        /* Generated by an aperture macro declaration like:
         * "6,0,0,0.125,.01,0.01,3,0.003,0.150,0"
         * type(6), pos.x, pos.y, diam, penwidth, gap, circlecount, crosshair thickness, crosshaire len, rotation
         * type is not stored in parameters list, so the first parameter is pos.x
         */
        int outerDiam    = scaletoIU( params[2].GetValue( tool ), m_GerbMetric );
        int penThickness = scaletoIU( params[3].GetValue( tool ), m_GerbMetric );
        int gap = scaletoIU( params[4].GetValue( tool ), m_GerbMetric );
        int numCircles = KiROUND( params[5].GetValue( tool ) );

        // Draw circles:
        wxPoint center = aParent->GetABPosition( curPos );
        // adjust outerDiam by this on each nested circle
        int diamAdjust = (gap + penThickness); //*2;     //Should we use * 2 ?
        for( int i = 0; i < numCircles; ++i, outerDiam -= diamAdjust )
        {
            if( outerDiam <= 0 )
                break;
            if( !aFilledShape )
            {
                // draw the border of the pen's path using two circles, each as narrow as possible
                GRCircle( aClipBox, aDC, center, outerDiam / 2, 0, aColor );
                GRCircle( aClipBox, aDC, center, outerDiam / 2 - penThickness, 0, aColor );
            }
            else    // Filled mode
            {
                GRCircle( aClipBox, aDC, center,
                          (outerDiam - penThickness) / 2, penThickness, aColor );
            }
        }

        // Draw the cross:
        ConvertShapeToPolygon( aParent, polybuffer );

        rotation = params[8].GetValue( tool ) * 10.0;
        for( unsigned ii = 0; ii < polybuffer.size(); ii++ )
        {
            // shape rotation:
            RotatePoint( &polybuffer[ii], -rotation );
            // Move to current position:
            polybuffer[ii] += curPos;