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kicad-source/common/gr_basic.cpp
Jon Evans a52250a91e Change from EDA_COLOR_T to COLOR4D globally; arbitrary color support 
eeschema now supports arbitrary colors for all object types, and
pcbnew does in GAL canvas.  When switching from GAL to legacy canvas,
pcbnew will convert colors to the nearest legacy color.
2017-02-22 17:35:00 +01:00

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/********************************/
/* Low level graphics routines */
/********************************/
#include <fctsys.h>
#include <gr_basic.h>
#include <common.h>
#include <trigo.h>
#include <macros.h>
#include <base_struct.h>
#include <class_base_screen.h>
#include <bezier_curves.h>
#include <math_for_graphics.h>
#include <wx/graphics.h>
#if defined(__WXMAC__) && defined(USE_WX_GRAPHICS_CONTEXT)
#include <wx/dcgraph.h>
#endif
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, COLOR4D 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 COLOR4D s_DC_lastcolor( 0, 0, 0, 0 );
static COLOR4D s_DC_lastbrushcolor( 0, 0, 0, 0 );
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_COLOR4D;
s_DC_lastcolor = UNSPECIFIED_COLOR4D;
s_DC_lastDC = NULL;
}
/**
* Function GRSetColorPen
* sets a pen style, width, color, and alpha into the given device context.
*/
void GRSetColorPen( wxDC* DC, COLOR4D Color, int width, wxPenStyle style )
{
// Under OSX and while printing when wxPen is set to 0, renderer 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 );
if( s_ForceBlackPen )
Color = COLOR4D_BLACK;
const wxPen& curr_pen = DC->GetPen();
if( !curr_pen.IsOk() || curr_pen.GetColour() != Color.ToColour()
|| curr_pen.GetWidth() != width
|| curr_pen.GetStyle() != style )
{
wxPen pen;
pen.SetColour( Color.ToColour() );
pen.SetWidth( width );
pen.SetStyle( style );
DC->SetPen( pen );
}
else
// Should be not needed, but on Linux, in printing process
// the curr pen settings needs to be sometimes re-initialized
// Clearly, this is due to a bug, related to SetBrush(),
// but we have to live with it, at least on wxWidgets 3.0
DC->SetPen( curr_pen );
}
void GRSetBrush( wxDC* DC, COLOR4D Color, bool fill )
{
if( s_ForceBlackPen )
Color = COLOR4D_BLACK;
if( s_DC_lastbrushcolor != Color
|| s_DC_lastbrushfill != fill
|| s_DC_lastDC != DC )
{
wxBrush brush;
brush.SetColour( Color.ToColour() );
if( fill )
brush.SetStyle( wxBRUSHSTYLE_SOLID );
else
brush.SetStyle( wxBRUSHSTYLE_TRANSPARENT );
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 if( draw_mode & GR_COPY )
DC->SetLogicalFunction( wxCOPY );
#ifdef USE_WX_OVERLAY
DC->SetLogicalFunction( wxCOPY );
#endif
}
void GRPutPixel( EDA_RECT* ClipBox, wxDC* DC, int x, int y, COLOR4D 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,
COLOR4D 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, COLOR4D aColor )
{
GRLine( aClipBox, aDC, aStart.x, aStart.y, aEnd.x, aEnd.y, aWidth, aColor );
}
void GRDashedLine( EDA_RECT* ClipBox, wxDC* DC,
int x1, int y1, int x2, int y2,
int width, COLOR4D Color )
{
GRLastMoveToX = x2;
GRLastMoveToY = y2;
s_DC_lastcolor = UNSPECIFIED_COLOR4D;
GRSetColorPen( DC, Color, width, wxPENSTYLE_SHORT_DASH );
WinClipAndDrawLine( ClipBox, DC, x1, y1, x2, y2, width );
s_DC_lastcolor = UNSPECIFIED_COLOR4D;
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, COLOR4D Color )
{
GRLine( ClipBox, DC, GRLastMoveToX, GRLastMoveToY, x, y, width, Color );
}
void GRMixedLine( EDA_RECT* ClipBox, wxDC* DC, int x1, int y1, int x2, int y2,
int width, COLOR4D 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 = color to draw the lines
* @see COLOR4D
*/
void GRLineArray( EDA_RECT* aClipBox, wxDC* aDC, std::vector<wxPoint>& aLines,
int aWidth, COLOR4D aColor )
{
if( aLines.empty() )
return;
GRSetColorPen( aDC, aColor, aWidth );
if( aClipBox )
aClipBox->Inflate( aWidth / 2 );
#if defined( __WXMAC__ ) && defined( USE_WX_GRAPHICS_CONTEXT )
wxGCDC *gcdc = wxDynamicCast( aDC, wxGCDC );
if( gcdc )
{
wxGraphicsContext *gc = gcdc->GetGraphicsContext();
// create path
wxGraphicsPath path = gc->CreatePath();
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;
if( ( aClipBox == NULL ) || !clipLine( aClipBox, x1, y1, x2, y2 ) )
{
path.MoveToPoint( x1, y1 );
path.AddLineToPoint( x2, y2 );
}
}
// draw path
gc->StrokePath( path );
}
else
#endif
{
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;
if( ( aClipBox == NULL ) || !clipLine( aClipBox, x1, y1, x2, y2 ) )
aDC->DrawLine( x1, y1, x2, y2 );
}
}
GRMoveTo( aLines[aLines.size() - 1].x, aLines[aLines.size() - 1].y );
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, COLOR4D 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;
}
GRSetBrush( DC, Color, NOT_FILLED );
GRSetColorPen( DC, Color, aPenSize );
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, COLOR4D Color )
{
GRCSegm( ClipBox, DC, x1, y1, x2, y2, width, 0, Color );
}
void GRCSegm( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aStart, wxPoint aEnd,
int aWidth, COLOR4D 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, COLOR4D 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, COLOR4D 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,
COLOR4D Color, COLOR4D BgColor )
{
if( !IsGRSPolyDrawable( ClipBox, n, Points ) )
return;
if( Fill && ( n > 2 ) )
{
GRSetBrush( DC, BgColor, FILLED );
GRSetColorPen( DC, Color, width );
/* 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
{
#if defined( __WXMAC__ ) && defined( USE_WX_GRAPHICS_CONTEXT )
wxGCDC *gcdc = wxDynamicCast( DC, wxGCDC );
if( gcdc )
{
wxGraphicsContext *gc = gcdc->GetGraphicsContext();
// set pen
GRSetColorPen( DC, Color, width );
// create path
wxGraphicsPath path = gc->CreatePath();
path.MoveToPoint( Points[0].x, Points[0].y );
for( int i = 1; i < n; ++i )
{
path.AddLineToPoint( Points[i].x, Points[i].y );
}
// draw path
gc->StrokePath( path );
// correctly update last position
GRMoveTo( Points[n - 1].x, Points[n - 1].y );
}
else
#endif
{
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,
COLOR4D aColor,
COLOR4D aBgColor )
{
if( !IsGRSPolyDrawable( aClipBox, aPointCount, aPoints ) )
return;
if( aFill && ( aPointCount > 2 ) )
{
GRLastMoveToX = aPoints[aPointCount - 1].x;
GRLastMoveToY = aPoints[aPointCount - 1].y;
GRSetBrush( aDC, aBgColor, FILLED );
GRSetColorPen( aDC, aColor, aWidth );
ClipAndDrawPoly( aClipBox, aDC, aPoints, aPointCount );
}
else
{
#if defined( __WXMAC__ ) && defined( USE_WX_GRAPHICS_CONTEXT )
wxGCDC *gcdc = wxDynamicCast( aDC, wxGCDC );
if( gcdc )
{
wxGraphicsContext *gc = gcdc->GetGraphicsContext();
// set pen
GRSetColorPen( aDC, aColor, aWidth );
// create path
wxGraphicsPath path = gc->CreatePath();
path.MoveToPoint( aPoints[0].x, aPoints[0].y );
for( int i = 1; i < aPointCount; ++i )
{
path.AddLineToPoint( aPoints[i].x, aPoints[i].y );
}
if( aPoints[aPointCount - 1] != aPoints[0] )
path.AddLineToPoint( aPoints[0].x, aPoints[0].y );
// draw path
gc->StrokePath( path );
// correctly update last position
GRMoveTo( aPoints[aPointCount - 1].x, aPoints[aPointCount - 1].y );
}
else
#endif
{
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, COLOR4D Color, COLOR4D 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, COLOR4D Color, COLOR4D 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, COLOR4D Color, COLOR4D 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, COLOR4D 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;
}
GRSetBrush( DC, Color, NOT_FILLED );
GRSetColorPen( DC, Color, width );
DC->DrawEllipse( xc - r, yc - r, r + r, r + r );
}
void GRCircle( EDA_RECT* ClipBox, wxDC* DC, int x, int y, int r, COLOR4D Color )
{
GRCircle( ClipBox, DC, x, y, r, 0, Color );
}
void GRCircle( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aPos, int aRadius, int aWidth, COLOR4D 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, COLOR4D Color, COLOR4D 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;
}
GRSetBrush( DC, BgColor, FILLED );
GRSetColorPen( DC, Color, width );
DC->DrawEllipse( x - r, y - r, r + r, r + r );
}
void GRFilledCircle( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aPos, int aRadius, COLOR4D 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, COLOR4D 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, COLOR4D 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;
}
GRSetBrush( DC, Color );
GRSetColorPen( DC, Color, width );
DC->DrawArc( x1, y1, x2, y2, xc, yc );
}
void GRArc1( EDA_RECT* aClipBox, wxDC* aDC, wxPoint aStart, wxPoint aEnd,
wxPoint aCenter, int aWidth, COLOR4D 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,
COLOR4D Color,
COLOR4D 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,
COLOR4D Color, COLOR4D 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, COLOR4D 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 );
GRSetBrush( DC, Color, NOT_FILLED );
GRSetColorPen( DC, Color );
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,
COLOR4D 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 );
GRSetBrush( DC, Color );
GRSetColorPen( DC, Color, width );
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, COLOR4D aColor )
{
GRSRect( aClipBox, aDC, x1, y1, x2, y2, 0, aColor );
}
void GRRectPs( EDA_RECT* aClipBox, wxDC* aDC, const EDA_RECT& aRect, COLOR4D 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, COLOR4D Color )
{
GRSRect( ClipBox, DC, x1, y1, x2, y2, width, Color );
}
void GRRect( EDA_RECT* aClipBox, wxDC* aDC, const EDA_RECT& aRect, int aWidth, COLOR4D 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,
COLOR4D Color, COLOR4D 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, COLOR4D Color, COLOR4D 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, COLOR4D 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, COLOR4D aColor, COLOR4D 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 <SutherlandHodgmanClipPoly.h>
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<wxPoint> 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,
COLOR4D Color )
{
std::vector<wxPoint> 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,
COLOR4D Color )
{
std::vector<wxPoint> 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, COLOR4D 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 );
}
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