/********************************/ /* Low level graphics routines */ /********************************/ #include #include #include #include #include #include #include #include #include #include static const bool FILLED = true; static const bool NOT_FILLED = false; /* Important Note: * These drawing functions clip draw item before send these items to wxDC draw * functions. For guy who asks why i did it, see a sample of problems encountered * when pixels * coordinates overflow 16 bits values: * http://trac.wxwidgets.org/ticket/10446 * Problems can be found under Windows **and** Linux (mainly when drawing arcs) * (mainly at low zoom values (2, 1 or 0.5), in Pcbnew) * some of these problems could be now fixed in recent distributions. * * Currently (feb 2009) there are overflow problems when drawing solid (filled) * polygons under linux without clipping * * So before removing clipping functions, be aware these bug (they are not in * KiCad or wxWidgets) are fixed by testing how are drawn complex lines arcs * and solid polygons under Windows and Linux and remember users can have old * versions with bugs */ /* Definitions for enabling and disabling debugging features in gr_basic.cpp. * Please remember to set these back to 0 before making LAUNCHPAD commits. */ #define DEBUG_DUMP_CLIP_ERROR_COORDS 0 // Set to 1 to dump clip algorithm errors. #define DEBUG_DUMP_CLIP_COORDS 0 // Set to 1 to dump clipped coordinates. // For draw mode = XOR GR_XOR or GR_NXOR by background color GR_DRAWMODE g_XorMode = GR_NXOR; static void ClipAndDrawPoly( EDA_RECT * ClipBox, wxDC * DC, wxPoint Points[], int n ); /* These functions are used by corresponding functions * ( GRSCircle is called by GRCircle for instance) after mapping coordinates * from user units to screen units(pixels coordinates) */ static void GRSRect( EDA_RECT* aClipBox, wxDC* aDC, int x1, int y1, int x2, int y2, int aWidth, EDA_COLOR_T aColor, wxPenStyle aStyle = wxPENSTYLE_SOLID ); /**/ static int GRLastMoveToX, GRLastMoveToY; static bool s_ForceBlackPen; /* if true: draws in black instead of * color for printing. */ static int xcliplo = 0, ycliplo = 0, xcliphi = 2000, ycliphi = 2000; static EDA_COLOR_T s_DC_lastcolor = UNSPECIFIED_COLOR; static int s_DC_lastwidth = -1; static int s_DC_lastpenstyle = -1; static EDA_COLOR_T s_DC_lastbrushcolor = UNSPECIFIED_COLOR; static bool s_DC_lastbrushfill = false; static wxDC* s_DC_lastDC = NULL; /*** * Utility for the line clipping code, returns the boundary code of * a point. Bit allocation is arbitrary */ static inline int clipOutCode( const EDA_RECT *aClipBox, int x, int y ) { int code; if( y < aClipBox->GetY() ) code = 2; else if( y > aClipBox->GetBottom() ) code = 1; else code = 0; if( x < aClipBox->GetX() ) code |= 4; else if( x > aClipBox->GetRight() ) code |= 8; return code; } /** * Test if any part of a line falls within the bounds of a rectangle. * * Please note that this is only accurate for lines that are one pixel wide. * * @param aClipBox - The rectangle to test. * @param x1 - X coordinate of one end of a line. * @param y1 - Y coordinate of one end of a line. * @param x2 - X coordinate of the other end of a line. * @param y2 - Y coordinate of the other end of a line. * * @return - False if any part of the line lies within the rectangle. */ static bool clipLine( const EDA_RECT *aClipBox, int &x1, int &y1, int &x2, int &y2 ) { // Stock Cohen-Sutherland algorithm; check *any* CG book for details int outcode1 = clipOutCode( aClipBox, x1, y1 ); int outcode2 = clipOutCode( aClipBox, x2, y2 ); while( outcode1 || outcode2 ) { // Fast reject if( outcode1 & outcode2 ) return true; // Choose a side to clip int thisoutcode, x, y; if( outcode1 ) thisoutcode = outcode1; else thisoutcode = outcode2; /* One clip round * Since we use the full range of 32 bit ints, the proportion * computation has to be done in 64 bits to avoid horrible * results */ if( thisoutcode & 1 ) // Clip the bottom { y = aClipBox->GetBottom(); x = x1 + (x2 - x1) * int64_t(y - y1) / (y2 - y1); } else if( thisoutcode & 2 ) // Clip the top { y = aClipBox->GetY(); x = x1 + (x2 - x1) * int64_t(y - y1) / (y2 - y1); } else if( thisoutcode & 8 ) // Clip the right { x = aClipBox->GetRight(); y = y1 + (y2 - y1) * int64_t(x - x1) / (x2 - x1); } else // if( thisoutcode & 4), obviously, clip the left { x = aClipBox->GetX(); y = y1 + (y2 - y1) * int64_t(x - x1) / (x2 - x1); } // Put the result back and update the boundary code // No ambiguity, otherwise it would have been a fast reject if( thisoutcode == outcode1 ) { x1 = x; y1 = y; outcode1 = clipOutCode( aClipBox, x1, y1 ); } else { x2 = x; y2 = y; outcode2 = clipOutCode( aClipBox, x2, y2 ); } } return false; } static void WinClipAndDrawLine( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width ) { GRLastMoveToX = x2; GRLastMoveToY = y2; if( ClipBox ) { EDA_RECT clipbox(*ClipBox); clipbox.Inflate(width/2); if( clipLine( &clipbox, x1, y1, x2, y2 ) ) return; } DC->DrawLine( x1, y1, x2, y2 ); } /* Forcing a reset of the current pen. * Must be called after changing the graphical device before any trace. */ void GRResetPenAndBrush( wxDC* DC ) { GRSetBrush( DC, BLACK ); // Force no fill s_DC_lastbrushcolor = UNSPECIFIED_COLOR; s_DC_lastcolor = UNSPECIFIED_COLOR; s_DC_lastDC = NULL; } /** * Function GRSetColorPen * sets a pen style, width, color, and alpha into the given device context. */ void GRSetColorPen( wxDC* DC, EDA_COLOR_T Color, int width, wxPenStyle style ) { if( width < 0 ) width = 0; #ifdef __WXMAC__ // Under OSX when wxPen is set to 0, cocoa follows the request drawing nothing & // in the bitmap world the minimum is enough to light a pixel, in vectorial one not if( width <= 1 ) width = DC->DeviceToLogicalXRel( 1 ); #endif if( s_ForceBlackPen ) { Color = BLACK; } if( s_DC_lastcolor != Color || s_DC_lastwidth != width || s_DC_lastpenstyle != style || s_DC_lastDC != DC ) { wxPen pen; wxColour wx_color = MakeColour( Color ); pen.SetColour( wx_color ); pen.SetWidth( width ); pen.SetStyle( style ); DC->SetPen( pen ); s_DC_lastcolor = Color; s_DC_lastwidth = width; s_DC_lastpenstyle = style; s_DC_lastDC = DC; } } void GRSetBrush( wxDC* DC, EDA_COLOR_T Color, bool fill ) { if( s_ForceBlackPen ) Color = BLACK; if( s_DC_lastbrushcolor != Color || s_DC_lastbrushfill != fill || s_DC_lastDC != DC ) { wxBrush brush; brush.SetColour( MakeColour( Color ) ); if( fill ) #if wxCHECK_VERSION( 3, 0, 0 ) brush.SetStyle( wxBRUSHSTYLE_SOLID ); else brush.SetStyle( wxBRUSHSTYLE_TRANSPARENT ); #else brush.SetStyle( wxSOLID ); else brush.SetStyle( wxTRANSPARENT ); #endif DC->SetBrush( brush ); s_DC_lastbrushcolor = Color; s_DC_lastbrushfill = fill; s_DC_lastDC = DC; } } /** * Function GRForceBlackPen * @param flagforce True to force a black pen whenever the asked color */ void GRForceBlackPen( bool flagforce ) { s_ForceBlackPen = flagforce; } /** * Function GetGRForceBlackPenState * @return s_ForceBlackPen (True if a black pen was forced) */ bool GetGRForceBlackPenState( void ) { return s_ForceBlackPen; } /*************************************/ /* Set the device context draw mode. */ /*************************************/ void GRSetDrawMode( wxDC* DC, GR_DRAWMODE draw_mode ) { if( draw_mode & GR_OR ) #if defined(__WXMAC__) && (wxMAC_USE_CORE_GRAPHICS || wxCHECK_VERSION( 2, 9, 0 ) ) DC->SetLogicalFunction( wxCOPY ); #elif defined( USE_WX_GRAPHICS_CONTEXT ) DC->SetLogicalFunction( wxCOPY ); #else DC->SetLogicalFunction( wxOR ); #endif else if( draw_mode & GR_XOR ) #if defined( USE_WX_GRAPHICS_CONTEXT ) DC->SetLogicalFunction( wxCOPY ); #else DC->SetLogicalFunction( wxXOR ); #endif else if( draw_mode & GR_NXOR ) #if defined(__WXMAC__) && (wxMAC_USE_CORE_GRAPHICS || wxCHECK_VERSION( 2, 9, 0 ) ) DC->SetLogicalFunction( wxXOR ); #elif defined( USE_WX_GRAPHICS_CONTEXT ) DC->SetLogicalFunction( wxCOPY ); #else DC->SetLogicalFunction( wxEQUIV ); #endif else if( draw_mode & GR_INVERT ) #if defined( USE_WX_GRAPHICS_CONTEXT ) DC->SetLogicalFunction( wxCOPY ); #else DC->SetLogicalFunction( wxINVERT ); #endif else DC->SetLogicalFunction( wxCOPY ); #ifdef USE_WX_OVERLAY DC->SetLogicalFunction( wxCOPY ); #endif } void GRPutPixel( EDA_RECT* ClipBox, wxDC* DC, int x, int y, EDA_COLOR_T Color ) { if( ClipBox && !ClipBox->Contains( x, y ) ) return; GRSetColorPen( DC, Color ); DC->DrawPoint( x, y ); } /* * Draw a line, in object space. */ void GRLine( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width, EDA_COLOR_T Color ) { GRSetColorPen( DC, Color, width ); WinClipAndDrawLine( ClipBox, DC, x1, y1, x2, y2, width ); GRLastMoveToX = x2; GRLastMoveToY = y2; } void GRLine( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aStart, wxPoint aEnd, int aWidth, EDA_COLOR_T aColor ) { GRLine( aClipBox, aDC, aStart.x, aStart.y, aEnd.x, aEnd.y, aWidth, aColor ); } void GRDashedLineTo( EDA_RECT* ClipBox, wxDC* DC, int x2, int y2, int width, EDA_COLOR_T Color ) { s_DC_lastcolor = UNSPECIFIED_COLOR; GRSetColorPen( DC, Color, width, wxPENSTYLE_SHORT_DASH ); WinClipAndDrawLine( ClipBox, DC, GRLastMoveToX, GRLastMoveToY, x2, y2, width ); s_DC_lastcolor = UNSPECIFIED_COLOR; GRSetColorPen( DC, Color, width ); GRLastMoveToX = x2; GRLastMoveToY = y2; } void GRDashedLine( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width, EDA_COLOR_T Color ) { GRLastMoveToX = x2; GRLastMoveToY = y2; s_DC_lastcolor = UNSPECIFIED_COLOR; GRSetColorPen( DC, Color, width, wxPENSTYLE_SHORT_DASH ); WinClipAndDrawLine( ClipBox, DC, x1, y1, x2, y2, width ); s_DC_lastcolor = UNSPECIFIED_COLOR; GRSetColorPen( DC, Color, width ); } /* * Move to a new position, in object space. */ void GRMoveTo( int x, int y ) { GRLastMoveToX = x; GRLastMoveToY = y; } /* * Draw line to a new position, in object space. */ void GRLineTo( EDA_RECT* ClipBox, wxDC* DC, int x, int y, int width, EDA_COLOR_T Color ) { int GRLineToX, GRLineToY; GRLineToX = x; GRLineToY = y; GRLine( ClipBox, DC, GRLastMoveToX, GRLastMoveToY, GRLineToX, GRLineToY, width, Color ); } void GRMixedLine( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width, EDA_COLOR_T Color ) { GRSetColorPen( DC, Color, width, wxPENSTYLE_DOT_DASH ); GRLine( ClipBox, DC, x1, y1, x2, y2, width, Color ); GRSetColorPen( DC, Color, width ); } /** * Function GRLineArray * draws an array of lines (not a polygon). * @param aClipBox = the clip box * @param aDC = the device context into which drawing should occur. * @param aLines = a list of pair of coordinate in user space: a pair for each line. * @param aWidth = the width of each line. * @param aColor = an index into our color table of RGB colors. * @see EDA_COLOR_T and colors.h */ void GRLineArray( EDA_RECT* aClipBox, wxDC* aDC, std::vector& aLines, int aWidth, EDA_COLOR_T aColor ) { GRSetColorPen( aDC, aColor, aWidth ); if( aClipBox ) aClipBox->Inflate(aWidth/2); for( unsigned i = 0; i < aLines.size(); i += 2) { int x1 = aLines[i].x; int y1 = aLines[i].y; int x2 = aLines[i+1].x; int y2 = aLines[i+1].y; GRLastMoveToX = x2; GRLastMoveToY = y2; if( ( aClipBox == NULL ) || !clipLine( aClipBox, x1, y1, x2, y2 ) ) aDC->DrawLine( x1, y1, x2, y2 ); } if( aClipBox ) aClipBox->Inflate(-aWidth/2); } // Draw the outline of a thick segment wih rounded ends void GRCSegm( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width, int aPenSize, EDA_COLOR_T Color ) { GRLastMoveToX = x2; GRLastMoveToY = y2; if( ClipBox ) { EDA_RECT clipbox(*ClipBox); clipbox.Inflate(width/2); if( clipLine( &clipbox, x1, y1, x2, y2 ) ) return; } if( width <= 2 ) /* single line or 2 pixels */ { GRSetColorPen( DC, Color, width ); DC->DrawLine( x1, y1, x2, y2 ); return; } GRSetColorPen( DC, Color, aPenSize ); GRSetBrush( DC, Color, false ); int radius = (width + 1) >> 1; int dx = x2 - x1; int dy = y2 - y1; double angle = -ArcTangente( dy, dx ); wxPoint start; wxPoint end; wxPoint org( x1, y1); int len = (int) hypot( dx, dy ); // We know if the DC is mirrored, to draw arcs int slx = DC->DeviceToLogicalX( 1 ) - DC->DeviceToLogicalX( 0 ); int sly = DC->DeviceToLogicalY( 1 ) - DC->DeviceToLogicalY( 0 ); bool mirrored = (slx > 0 && sly < 0) || (slx < 0 && sly > 0); // first edge start.x = 0; start.y = radius; end.x = len; end.y = radius; RotatePoint( &start, angle); RotatePoint( &end, angle); start += org; end += org; DC->DrawLine( start, end ); // first rounded end end.x = 0; end.y = -radius; RotatePoint( &end, angle); end += org; if( !mirrored ) DC->DrawArc( end, start, org ); else DC->DrawArc( start, end, org ); // second edge start.x = len; start.y = -radius; RotatePoint( &start, angle); start += org; DC->DrawLine( start, end ); // second rounded end end.x = len; end.y = radius; RotatePoint( &end, angle); end += org; if( !mirrored ) DC->DrawArc( end.x, end.y, start.x, start.y, x2, y2 ); else DC->DrawArc( start.x, start.y, end.x, end.y, x2, y2 ); } void GRCSegm( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width, EDA_COLOR_T Color ) { GRCSegm( ClipBox, DC, x1, y1, x2, y2, width, 0, Color ); } void GRCSegm( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aStart, wxPoint aEnd, int aWidth, EDA_COLOR_T aColor ) { GRCSegm( aClipBox, aDC, aStart.x, aStart.y, aEnd.x, aEnd.y, aWidth, 0, aColor ); } /* * Draw segment (full) with rounded ends in object space (real coords.). */ void GRFillCSegm( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width, EDA_COLOR_T Color ) { GRSetColorPen( DC, Color, width ); WinClipAndDrawLine( ClipBox, DC, x1, y1, x2, y2, width ); } void GRFilledSegment( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aStart, wxPoint aEnd, int aWidth, EDA_COLOR_T aColor ) { GRSetColorPen( aDC, aColor, aWidth ); WinClipAndDrawLine( aClipBox, aDC, aStart.x, aStart.y, aEnd.x, aEnd.y, aWidth ); } static bool IsGRSPolyDrawable( EDA_RECT* ClipBox, int n, wxPoint Points[] ) { if( !ClipBox ) return true; if( n <= 0 ) return false; int Xmin, Xmax, Ymin, Ymax; Xmin = Xmax = Points[0].x; Ymin = Ymax = Points[0].y; for( int ii = 1; ii < n; ii++ ) // calculate rectangle { Xmin = std::min( Xmin, Points[ii].x ); Xmax = std::max( Xmax, Points[ii].x ); Ymin = std::min( Ymin, Points[ii].y ); Ymax = std::max( Ymax, Points[ii].y ); } xcliplo = ClipBox->GetX(); ycliplo = ClipBox->GetY(); xcliphi = ClipBox->GetRight(); ycliphi = ClipBox->GetBottom(); if( Xmax < xcliplo ) return false; if( Xmin > xcliphi ) return false; if( Ymax < ycliplo ) return false; if( Ymin > ycliphi ) return false; return true; } /* * Draw a new polyline and fill it if Fill, in screen space. */ static void GRSPoly( EDA_RECT* ClipBox, wxDC* DC, int n, wxPoint Points[], bool Fill, int width, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { if( !IsGRSPolyDrawable( ClipBox, n, Points ) ) return; GRSetColorPen( DC, Color, width ); if( Fill && ( n > 2 ) ) { GRSetBrush( DC, BgColor, FILLED ); /* clip before send the filled polygon to wxDC, because under linux * (GTK?) polygons having large coordinates are incorrectly drawn * (integer overflow in coordinates, I am guessing) */ ClipAndDrawPoly( ClipBox, DC, Points, n ); } else { GRMoveTo( Points[0].x, Points[0].y ); for( int i = 1; i < n; ++i ) { GRLineTo( ClipBox, DC, Points[i].x, Points[i].y, width, Color ); } } } /* * Draw a new closed polyline and fill it if Fill, in screen space. */ static void GRSClosedPoly( EDA_RECT* aClipBox, wxDC* aDC, int aPointCount, wxPoint aPoints[], bool aFill, int aWidth, EDA_COLOR_T aColor, EDA_COLOR_T aBgColor ) { if( !IsGRSPolyDrawable( aClipBox, aPointCount, aPoints ) ) return; GRSetColorPen( aDC, aColor, aWidth ); if( aFill && ( aPointCount > 2 ) ) { GRLastMoveToX = aPoints[aPointCount - 1].x; GRLastMoveToY = aPoints[aPointCount - 1].y; GRSetBrush( aDC, aBgColor, FILLED ); ClipAndDrawPoly( aClipBox, aDC, aPoints, aPointCount ); } else { GRMoveTo( aPoints[0].x, aPoints[0].y ); for( int i = 1; i < aPointCount; ++i ) { GRLineTo( aClipBox, aDC, aPoints[i].x, aPoints[i].y, aWidth, aColor ); } int lastpt = aPointCount - 1; // Close the polygon if( aPoints[lastpt] != aPoints[0] ) { GRLineTo( aClipBox, aDC, aPoints[0].x, aPoints[0].y, aWidth, aColor ); } } } /* * Draw a new polyline and fill it if Fill, in drawing space. */ void GRPoly( EDA_RECT* ClipBox, wxDC* DC, int n, wxPoint Points[], bool Fill, int width, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { GRSPoly( ClipBox, DC, n, Points, Fill, width, Color, BgColor ); } /* * Draw a closed polyline and fill it if Fill, in object space. */ void GRClosedPoly( EDA_RECT* ClipBox, wxDC* DC, int n, wxPoint Points[], bool Fill, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { GRClosedPoly( ClipBox, DC, n, Points, Fill, 0, Color, BgColor ); } void GRClosedPoly( EDA_RECT* ClipBox, wxDC* DC, int n, wxPoint Points[], bool Fill, int width, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { GRSClosedPoly( ClipBox, DC, n, Points, Fill, width, Color, BgColor ); } void GRCircle( EDA_RECT* ClipBox, wxDC* DC, int xc, int yc, int r, int width, EDA_COLOR_T Color ) { /* Clip circles off screen. */ if( ClipBox ) { int x0, y0, xm, ym; x0 = ClipBox->GetX(); y0 = ClipBox->GetY(); xm = ClipBox->GetRight(); ym = ClipBox->GetBottom(); if( xc < ( x0 - r - width ) ) return; if( yc < ( y0 - r - width ) ) return; if( xc > ( r + xm + width ) ) return; if( yc > ( r + ym + width ) ) return; } GRSetColorPen( DC, Color, width ); GRSetBrush( DC, Color, false ); DC->DrawEllipse( xc - r, yc - r, r + r, r + r ); } void GRCircle( EDA_RECT* ClipBox, wxDC* DC, int x, int y, int r, EDA_COLOR_T Color ) { GRCircle( ClipBox, DC, x, y, r, 0, Color ); } void GRCircle( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aPos, int aRadius, int aWidth, EDA_COLOR_T aColor ) { GRCircle( aClipBox, aDC, aPos.x, aPos.y, aRadius, aWidth, aColor ); } void GRFilledCircle( EDA_RECT* ClipBox, wxDC* DC, int x, int y, int r, int width, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { /* Clip circles off screen. */ if( ClipBox ) { int x0, y0, xm, ym; x0 = ClipBox->GetX(); y0 = ClipBox->GetY(); xm = ClipBox->GetRight(); ym = ClipBox->GetBottom(); if( x < (x0 - r) ) return; if( y < (y0 - r) ) return; if( x > (r + xm) ) return; if( y > (r + ym) ) return; } GRSetColorPen( DC, Color, width ); GRSetBrush( DC, BgColor, FILLED ); DC->DrawEllipse( x - r, y - r, r + r, r + r ); } void GRFilledCircle( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aPos, int aRadius, EDA_COLOR_T aColor ) { GRFilledCircle( aClipBox, aDC, aPos.x, aPos.y, aRadius, 0, aColor, aColor ); } /* * Draw an arc in user space. */ void GRArc1( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int xc, int yc, EDA_COLOR_T Color ) { GRArc1( ClipBox, DC, x1, y1, x2, y2, xc, yc, 0, Color ); } /* * Draw an arc, width = width in user space. */ void GRArc1( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int xc, int yc, int width, EDA_COLOR_T Color ) { /* Clip arcs off screen. */ if( ClipBox ) { int x0, y0, xm, ym, r; x0 = ClipBox->GetX(); y0 = ClipBox->GetY(); xm = ClipBox->GetRight(); ym = ClipBox->GetBottom(); r = KiROUND( Distance( x1, y1, xc, yc ) ); if( xc < ( x0 - r ) ) return; if( yc < ( y0 - r ) ) return; if( xc > ( r + xm ) ) return; if( yc > ( r + ym ) ) return; } GRSetColorPen( DC, Color, width ); GRSetBrush( DC, Color ); DC->DrawArc( x1, y1, x2, y2, xc, yc ); } void GRArc1( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aStart, wxPoint aEnd, wxPoint aCenter, int aWidth, EDA_COLOR_T aColor ) { GRArc1( aClipBox, aDC, aStart.x, aStart.y, aEnd.x, aEnd.y, aCenter.x, aCenter.y, aWidth, aColor ); } /* * Draw a filled arc in drawing space. */ void GRFilledArc( EDA_RECT* ClipBox, wxDC* DC, int x, int y, double StAngle, double EndAngle, int r, int width, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { int x1, y1, x2, y2; /* Clip arcs off screen */ if( ClipBox ) { int x0, y0, xm, ym; x0 = ClipBox->GetX(); y0 = ClipBox->GetY(); xm = ClipBox->GetRight(); ym = ClipBox->GetBottom(); if( x < ( x0 - r - 1 ) ) return; if( y < ( y0 - r - 1 ) ) return; if( x > ( r + xm + 1 ) ) return; if( y > ( r + ym + 1 ) ) return; } x1 = r; y1 = 0; RotatePoint( &x1, &y1, EndAngle ); x2 = r; y2 = 0; RotatePoint( &x2, &y2, StAngle ); GRSetBrush( DC, BgColor, FILLED ); GRSetColorPen( DC, Color, width ); DC->DrawArc( x + x1, y - y1, x + x2, y - y2, x, y ); } void GRFilledArc( EDA_RECT* ClipBox, wxDC* DC, int x, int y, double StAngle, double EndAngle, int r, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { GRFilledArc( ClipBox, DC, x, y, StAngle, EndAngle, r, 0, Color, BgColor ); } /* * Draw an arc in drawing space. */ void GRArc( EDA_RECT* ClipBox, wxDC* DC, int xc, int yc, double StAngle, double EndAngle, int r, EDA_COLOR_T Color ) { int x1, y1, x2, y2; /* Clip arcs off screen */ if( ClipBox ) { int radius = r + 1; int x0, y0, xm, ym, x, y; x0 = ClipBox->GetX(); y0 = ClipBox->GetY(); xm = ClipBox->GetRight(); ym = ClipBox->GetBottom(); x = xc; y = yc; if( x < ( x0 - radius ) ) return; if( y < ( y0 - radius ) ) return; if( x > ( xm + radius ) ) return; if( y > ( ym + radius ) ) return; } x1 = r; y1 = 0; RotatePoint( &x1, &y1, EndAngle ); x2 = r; y2 = 0; RotatePoint( &x2, &y2, StAngle ); GRSetColorPen( DC, Color ); GRSetBrush( DC, Color, false ); DC->DrawArc( xc + x1, yc - y1, xc + x2, yc - y2, xc, yc ); } /* * Draw an arc with width = width in drawing space. */ void GRArc( EDA_RECT* ClipBox, wxDC* DC, int x, int y, double StAngle, double EndAngle, int r, int width, EDA_COLOR_T Color ) { int x1, y1, x2, y2; /* Clip arcs off screen. */ if( ClipBox ) { int x0, y0, xm, ym; x0 = ClipBox->GetX(); y0 = ClipBox->GetY(); xm = ClipBox->GetRight(); ym = ClipBox->GetBottom(); if( x < ( x0 - r - width ) ) return; if( y < ( y0 - r - width ) ) return; if( x > ( r + xm + width ) ) return; if( y > ( r + ym + width ) ) return; } x1 = r; y1 = 0; RotatePoint( &x1, &y1, EndAngle ); x2 = r; y2 = 0; RotatePoint( &x2, &y2, StAngle ); GRSetColorPen( DC, Color, width ); GRSetBrush( DC, Color ); DC->DrawArc( x + x1, y - y1, x + x2, y - y2, x, y ); } /* * Draw a rectangle in drawing space. */ void GRRect( EDA_RECT* aClipBox, wxDC* aDC, int x1, int y1, int x2, int y2, EDA_COLOR_T aColor ) { GRSRect( aClipBox, aDC, x1, y1, x2, y2, 0, aColor ); } void GRRectPs( EDA_RECT* aClipBox, wxDC* aDC, const EDA_RECT& aRect, EDA_COLOR_T aColor, wxPenStyle aStyle ) { int x1 = aRect.GetX(); int y1 = aRect.GetY(); int x2 = aRect.GetRight(); int y2 = aRect.GetBottom(); GRSRect( aClipBox, aDC, x1, y1, x2, y2, 0, aColor, aStyle ); } /* * Draw a rectangle (thick lines) in drawing space. */ void GRRect( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width, EDA_COLOR_T Color ) { GRSRect( ClipBox, DC, x1, y1, x2, y2, width, Color ); } void GRRect( EDA_RECT* aClipBox, wxDC* aDC, const EDA_RECT& aRect, int aWidth, EDA_COLOR_T aColor ) { int x1 = aRect.GetX(); int y1 = aRect.GetY(); int x2 = aRect.GetRight(); int y2 = aRect.GetBottom(); GRSRect( aClipBox, aDC, x1, y1, x2, y2, aWidth, aColor ); } /* * Draw a rectangle (filled with AreaColor) in drawing space. */ void GRFilledRect( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { GRSFilledRect( ClipBox, DC, x1, y1, x2, y2, 0, Color, BgColor ); } /* * Draw a rectangle (filled with AreaColor) in drawing space. */ void GRFilledRect( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int width, EDA_COLOR_T Color, EDA_COLOR_T BgColor ) { GRSFilledRect( ClipBox, DC, x1, y1, x2, y2, width, Color, BgColor ); } /* * Draw a rectangle in screen space. */ void GRSRect( EDA_RECT* aClipBox, wxDC* aDC, int x1, int y1, int x2, int y2, int aWidth, EDA_COLOR_T aColor, wxPenStyle aStyle ) { wxPoint points[5]; points[0] = wxPoint(x1, y1); points[1] = wxPoint(x1, y2); points[2] = wxPoint(x2, y2); points[3] = wxPoint(x2, y1); points[4] = points[0]; GRSClosedPoly( aClipBox, aDC, 5, points, NOT_FILLED, aWidth, aColor, aColor ); } void GRSFilledRect( EDA_RECT* aClipBox, wxDC* aDC, int x1, int y1, int x2, int y2, int aWidth, EDA_COLOR_T aColor, EDA_COLOR_T aBgColor ) { wxPoint points[5]; points[0] = wxPoint(x1, y1); points[1] = wxPoint(x1, y2); points[2] = wxPoint(x2, y2); points[3] = wxPoint(x2, y1); points[4] = points[0]; GRSetBrush( aDC, aBgColor, FILLED ); GRSetColorPen( aDC, aBgColor, aWidth ); if( aClipBox && (aWidth > 0) ) { EDA_RECT clipbox(*aClipBox); clipbox.Inflate(aWidth); ClipAndDrawPoly(&clipbox, aDC, points, 5); // polygon approach is more accurate } else ClipAndDrawPoly(aClipBox, aDC, points, 5 ); } /** * Function ClipAndDrawPoly * Used to clip a polygon and draw it as Filled Polygon * uses the Sutherland and Hodgman algo to clip the given poly against a * rectangle. This rectangle is the drawing area this is useful under * Linux (2009) because filled polygons are incorrectly drawn if they have * too large coordinates (seems due to integer overflows in calculations) * Could be removed in some years, if become unnecessary. */ /* Note: aClipBox == NULL is legal, so if aClipBox == NULL, * the polygon is drawn, but not clipped */ #include void ClipAndDrawPoly( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aPoints[], int n ) { if( aClipBox == NULL ) { aDC->DrawPolygon( n, aPoints ); return; } // A clip box exists: clip and draw the polygon. static std::vector clippedPolygon; static pointVector inputPolygon, outputPolygon; inputPolygon.clear(); outputPolygon.clear(); clippedPolygon.clear(); for( int ii = 0; ii < n; ii++ ) inputPolygon.push_back( PointF( (REAL) aPoints[ii].x, (REAL) aPoints[ii].y ) ); RectF window( (REAL) aClipBox->GetX(), (REAL) aClipBox->GetY(), (REAL) aClipBox->GetWidth(), (REAL) aClipBox->GetHeight() ); SutherlandHodgman sh( window ); sh.Clip( inputPolygon, outputPolygon ); for( cpointIterator cit = outputPolygon.begin(); cit != outputPolygon.end(); ++cit ) { clippedPolygon.push_back( wxPoint( KiROUND( cit->X ), KiROUND( cit->Y ) ) ); } if( clippedPolygon.size() ) aDC->DrawPolygon( clippedPolygon.size(), &clippedPolygon[0] ); } void GRBezier( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int x3, int y3, int width, EDA_COLOR_T Color ) { std::vector Points = Bezier2Poly( x1, y1, x2, y2, x3, y3 ); GRPoly( ClipBox, DC, Points.size(), &Points[0], false, width, Color, Color ); } void GRBezier( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4, int width, EDA_COLOR_T Color ) { std::vector Points = Bezier2Poly( x1, y1, x2, y2, x3, y3, x4, y4 ); GRPoly( ClipBox, DC, Points.size(), &Points[0], false, width, Color, Color ); } void GRDrawAnchor( EDA_RECT *aClipBox, wxDC *aDC, int x, int y, int aSize, EDA_COLOR_T aColor ) { int anchor_size = aDC->DeviceToLogicalXRel( aSize ); GRLine( aClipBox, aDC, x - anchor_size, y, x + anchor_size, y, 0, aColor ); GRLine( aClipBox, aDC, x, y - anchor_size, x, y + anchor_size, 0, aColor ); }