DGtal 1.4.0
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Public Member Functions | Static Private Attributes
LibBoard::QuadraticBezierCurve Struct Reference

A quadratic Bezier curve having 3 control points. NB. It is also a parabola arc. More...

#include <Board/Shapes.h>

Inheritance diagram for LibBoard::QuadraticBezierCurve:
[legend]

Public Member Functions

 QuadraticBezierCurve (double x1, double y1, double x2, double y2, double x3, double y3, DGtal::Color pen, DGtal::Color fill, double lineWidth, const LineStyle style=SolidStyle, const LineCap cap=ButtCap, const LineJoin join=MiterJoin, int depthValue=-1)
 
void flushPostscript (std::ostream &stream, const TransformEPS &transform) const
 
void flushFIG (std::ostream &stream, const TransformFIG &transform, std::map< DGtal::Color, int > &colormap) const
 
void flushSVG (std::ostream &stream, const TransformSVG &transform) const
 
void flushCairo (cairo_t *cr, const TransformCairo &transform) const
 
void flushTikZ (std::ostream &stream, const TransformTikZ &transform) const
 
const std::string & name () const
 
- Public Member Functions inherited from LibBoard::Triangle
 Triangle (const Point &p1, const Point &p2, const Point &p3, DGtal::Color pen, DGtal::Color fill, double lineWidth, const LineStyle style=SolidStyle, const LineCap cap=ButtCap, const LineJoin join=MiterJoin, int depthValue=-1)
 
 Triangle (const double x1, const double y1, const double x2, const double y2, const double x3, const double y3, DGtal::Color pen, DGtal::Color fill, double lineWidth, const LineStyle style=SolidStyle, const LineCap cap=ButtCap, const LineJoin join=MiterJoin, int depthValue=-1)
 
const std::string & name () const
 
Triangle rotated (double angle) const
 
Triangle translated (double dx, double dy) const
 
Triangle scaled (double sx, double sy) const
 
Triangle scaled (double s) const
 
Triangle * clone () const
 
- Public Member Functions inherited from LibBoard::Polyline
 Polyline (const std::vector< Point > &points, bool closed, DGtal::Color penColor, DGtal::Color fillColor, double lineWidth, const LineStyle lineStyle=SolidStyle, const LineCap cap=ButtCap, const LineJoin join=MiterJoin, int depth=-1)
 
 Polyline (const Path &path, DGtal::Color penColor, DGtal::Color fillColor, double lineWidth, const LineStyle lineStyle=SolidStyle, const LineCap cap=ButtCap, const LineJoin join=MiterJoin, int depth=-1)
 
 Polyline (bool closed, DGtal::Color penColor, DGtal::Color fillColor, double lineWidth, const LineStyle lineStyle=SolidStyle, const LineCap cap=ButtCap, const LineJoin join=MiterJoin, int depth=-1)
 
Point center () const
 
Polyline & operator<< (const Point &p)
 
Point & operator[] (const unsigned int n)
 
Polyline & rotate (double angle, const Point &center)
 
Polyline rotated (double angle, const Point &center) const
 
Polyline & rotate (double angle)
 
Polyline rotated (double angle) const
 
Polyline & translate (double dx, double dy)
 
Polyline translated (double dx, double dy) const
 
Shape & scale (double sx, double sy)
 
Shape & scale (double s)
 
Polyline scaled (double sx, double sy) const
 
Polyline scaled (double s) const
 
void scaleAll (double s)
 
Rect boundingBox () const
 
- Public Member Functions inherited from LibBoard::Shape
 Shape (DGtal::Color penColor, DGtal::Color fillColor, double lineWidth, LineStyle style, const LineCap cap, const LineJoin join, int depth)
 
virtual ~Shape ()
 
bool filled () const
 
Shape & rotateDeg (double angle, const Point &center)
 
Shape & rotateDeg (double angle)
 
Rect bbox ()
 
Shape & operator-- ()
 
Shape & operator++ ()
 
int depth () const
 
virtual void depth (int)
 
virtual void shiftDepth (int shift)
 
const DGtal::Color & penColor () const
 
const DGtal::Color & fillColor () const
 

Static Private Attributes

static const std::string _name
 

Additional Inherited Members

- Public Types inherited from LibBoard::Shape
enum  LineCap { ButtCap = 0 , RoundCap , SquareCap }
 
enum  LineJoin { MiterJoin = 0 , RoundJoin , BevelJoin }
 
enum  LineStyle {
  SolidStyle = 0 , DashStyle , DotStyle , DashDotStyle ,
  DashDotDotStyle , DashDotDotDotStyle
}
 
- Protected Member Functions inherited from LibBoard::Shape
std::string svgProperties (const TransformSVG &transform) const
 
std::string postscriptProperties () const
 
void setCairoDashStyle (cairo_t *cr, LineStyle type) const
 
std::string tikzProperties (const TransformTikZ &transform) const
 
- Protected Attributes inherited from LibBoard::Polyline
Path _path
 
- Protected Attributes inherited from LibBoard::Shape
int _depth
 
DGtal::Color _penColor
 
DGtal::Color _fillColor
 
double _lineWidth
 
LineStyle _lineStyle
 
LineCap _lineCap
 
LineJoin _lineJoin
 

Detailed Description

A quadratic Bezier curve having 3 control points. NB. It is also a parabola arc.

Definition at line 1160 of file Board/Shapes.h.

Constructor & Destructor Documentation

◆ QuadraticBezierCurve()

LibBoard::QuadraticBezierCurve::QuadraticBezierCurve ( double x1,
double y1,
double x2,
double y2,
double x3,
double y3,
DGtal::Color pen,
DGtal::Color fill,
double lineWidth,
const LineStyle style = SolidStyle,
const LineCap cap = ButtCap,
const LineJoin join = MiterJoin,
int depthValue = -1 )
inline

Constructs a curve.

Parameters
x1First coordinate of the start point.
y1Second coordinate of the start point.
x2First coordinate of the middle point.
y2Second coordinate of the middle point.
x3First coordinate of the end point.
y3Second coordinate of the end point.
penColor of the curve.
fillColor of the interior.
lineWidthThe line thickness.
styleCurve style
capCurve cap
joinCurve join
depthValueThe depth of the line.

Definition at line 1179 of file Board/Shapes.h.

1187 : Triangle(x1, y1, x2, y2, x3, y3, pen, fill, lineWidth, style, cap, join, depthValue) {}
Triangle
HalfEdgeDataStructure::Triangle Triangle
Definition testHalfEdgeDataStructure.cpp:45

Member Function Documentation

◆ flushCairo()

void LibBoard::QuadraticBezierCurve::flushCairo ( cairo_t * cr,
const TransformCairo & transform ) const
virtual

Writes the cairo code of the shape in a cairo drawing context according to a transform.

Parameters
crThe cairo drawing context.
transformA 2D transform to be applied.

Reimplemented from LibBoard::Polyline.

Definition at line 2448 of file Shapes.cpp.

2450{
2451 double x1, y1, x2, y2, x3, y3, x4, y4; //coordinates of the control points
2452 _path[ 0 ].get(x1, y1);
2453 _path[ 1 ].get(x3, y3);
2454 _path[ 2 ].get(x4, y4);
2455 //we compute the two middle control points of a cubic Bezier curve
2456 //from the three control points of the quadratic Bezier curve
2457 x2 = x1 + 2/3.0*(x3-x1);
2458 y2 = y1 + 2/3.0*(y3-y1);
2459 x3 = x2 + 1/3.0*(x4-x1);
2460 y3 = y2 + 1/3.0*(y4-y1);
2461
2462 cairo_save (cr);
2463
2464 cairo_set_source_rgba (cr, _fillColor.red()/255.0, _fillColor.green()/255.0, _fillColor.blue()/255.0, 1.);
2465
2466 cairo_move_to( cr, transform.mapX( x1 ), transform.mapY( y1 ) );
2467 cairo_curve_to( cr, transform.mapX( x2 ), transform.mapY( y2 ),
2468 transform.mapX( x3 ), transform.mapY( y3 ),
2469 transform.mapX( x4 ), transform.mapY( y4 ) );
2470
2471 if ( filled() )
2472 {
2473 if ( _penColor != DGtal::Color::None )
2474 cairo_fill_preserve (cr);
2475 else
2476 cairo_fill (cr);
2477 }
2478
2479 if ( _penColor != DGtal::Color::None )
2480 {
2481 cairo_set_source_rgba (cr, _penColor.red()/255.0, _penColor.green()/255.0, _penColor.blue()/255.0, 1.);
2482
2483 cairo_set_line_width (cr, _lineWidth);
2484 cairo_set_line_cap (cr, cairoLineCap[_lineCap]);
2485 cairo_set_line_join (cr, cairoLineJoin[_lineJoin]);
2486 setCairoDashStyle (cr, _lineStyle);
2487
2488 cairo_stroke (cr);
2489 }
2490
2491 cairo_restore (cr);
2492}
DGtal::Color::None
static const Color None
Definition Color.h:412
DGtal::Color::green
void green(const unsigned char aGreenValue)
DGtal::Color::red
void red(const unsigned char aRedValue)
DGtal::Color::blue
void blue(const unsigned char aBlueValue)
LibBoard::Shape::_fillColor
DGtal::Color _fillColor
Definition Board/Shapes.h:297
LibBoard::Shape::_penColor
DGtal::Color _penColor
Definition Board/Shapes.h:296
LibBoard::Shape::setCairoDashStyle
void setCairoDashStyle(cairo_t *cr, LineStyle type) const
Definition Shapes.cpp:153
LibBoard::Shape::_lineStyle
LineStyle _lineStyle
Definition Board/Shapes.h:299
LibBoard::Shape::filled
bool filled() const
Definition Board/Shapes.h:111

References LibBoard::Shape::_fillColor, LibBoard::Shape::_lineCap, LibBoard::Shape::_lineJoin, LibBoard::Shape::_lineStyle, LibBoard::Shape::_lineWidth, LibBoard::Polyline::_path, LibBoard::Shape::_penColor, DGtal::Color::blue(), LibBoard::Shape::filled(), DGtal::Color::green(), DGtal::Color::None, DGtal::Color::red(), and LibBoard::Shape::setCairoDashStyle().

◆ flushFIG()

void LibBoard::QuadraticBezierCurve::flushFIG ( std::ostream & stream,
const TransformFIG & transform,
std::map< DGtal::Color, int > & colormap ) const
virtual

Writes the FIG code of the shape in a stream according to a transform.

Parameters
streamThe output stream.
transformA 2D transform to be applied.
colormapA colormap.

Reimplemented from LibBoard::Polyline.

Definition at line 2416 of file Shapes.cpp.

2419{
2420 stream << "#FIXME: quadratic Bezier curve unimplemented" << std::endl;
2421 Triangle::flushFIG(stream, transform, colormap);
2422}

◆ flushPostscript()

void LibBoard::QuadraticBezierCurve::flushPostscript ( std::ostream & stream,
const TransformEPS & transform ) const
virtual

Writes the EPS code of the shape in a stream according to a transform.

Parameters
streamThe output stream.
transformA 2D transform to be applied.

Reimplemented from LibBoard::Polyline.

Definition at line 2366 of file Shapes.cpp.

2368{
2369 double x1, y1, x2, y2, x3, y3, x4, y4; //coordinates of the control points
2370 _path[ 0 ].get(x1, y1);
2371 _path[ 1 ].get(x3, y3);
2372 _path[ 2 ].get(x4, y4);
2373 //we compute the two middle control points of a cubic Bezier curve
2374 //from the three control points of the quadratic Bezier curve
2375 x2 = x1 + 2/3.0*(x3-x1);
2376 y2 = y1 + 2/3.0*(y3-y1);
2377 x3 = x2 + 1/3.0*(x4-x1);
2378 y3 = y2 + 1/3.0*(y4-y1);
2379
2380 stream << std::endl << "% Bezier curve" << std::endl;
2381 if ( _fillColor != DGtal::Color::None ) {
2382 stream << "n "
2383 << transform.mapX( x1 ) << " "
2384 << transform.mapY( y1 ) << " "
2385 << "m "
2386 << transform.mapX( x2 ) << " "
2387 << transform.mapY( y2 ) << " "
2388 << transform.mapX( x3 ) << " "
2389 << transform.mapY( y3 ) << " "
2390 << transform.mapX( x4 ) << " "
2391 << transform.mapY( y4 ) << " "
2392 << "curveto ";
2393 _fillColor.flushPostscript( stream );
2394 stream << " " << postscriptProperties();
2395 stream << " fill" << std::endl;
2396 }
2397 if ( _penColor != DGtal::Color::None ) {
2398 stream << " " << postscriptProperties() << " ";
2399 stream << "n "
2400 << transform.mapX( x1 ) << " "
2401 << transform.mapY( y1 ) << " "
2402 << "m "
2403 << transform.mapX( x2 ) << " "
2404 << transform.mapY( y2 ) << " "
2405 << transform.mapX( x3 ) << " "
2406 << transform.mapY( y3 ) << " "
2407 << transform.mapX( x4 ) << " "
2408 << transform.mapY( y4 ) << " "
2409 << "curveto ";
2410 _penColor.flushPostscript( stream );
2411 stream << " stroke" << std::endl;
2412 }
2413}
DGtal::Color::flushPostscript
void flushPostscript(std::ostream &) const
Definition Color.cpp:142
LibBoard::Shape::postscriptProperties
std::string postscriptProperties() const
Definition Shapes.cpp:140

References LibBoard::Shape::_fillColor, LibBoard::Polyline::_path, LibBoard::Shape::_penColor, DGtal::Color::flushPostscript(), DGtal::Color::None, and LibBoard::Shape::postscriptProperties().

◆ flushSVG()

void LibBoard::QuadraticBezierCurve::flushSVG ( std::ostream & stream,
const TransformSVG & transform ) const
virtual

Writes the SVG code of the shape in a stream according to a transform.

Parameters
streamThe output stream.
transformA 2D transform to be applied.

Reimplemented from LibBoard::Polyline.

Definition at line 2425 of file Shapes.cpp.

2427{
2428 double x1, y1, x2, y2, x3, y3; //coordinates of the control points
2429 _path[ 0 ].get(x1, y1);
2430 _path[ 1 ].get(x2, y2);
2431 _path[ 2 ].get(x3, y3);
2432
2433 stream << "<path ";
2434 stream << svgProperties( transform ) << " ";
2435 //first point
2436 stream << "d='M " << transform.mapX( x1 );
2437 stream << "," << transform.mapY( y1 );
2438 //arc
2439 stream << " Q " << transform.mapX( x2 ) << "," << transform.mapY( y2 );
2440 //last point
2441 stream << " " << transform.mapX( x3 );
2442 stream << "," << transform.mapY( y3 );
2443 stream << "' />";
2444}
LibBoard::Shape::svgProperties
std::string svgProperties(const TransformSVG &transform) const
Definition Shapes.cpp:109

References LibBoard::Polyline::_path, and LibBoard::Shape::svgProperties().

◆ flushTikZ()

void LibBoard::QuadraticBezierCurve::flushTikZ ( std::ostream & stream,
const TransformTikZ & transform ) const
virtual

Writes the TikZ code of the shape in a stream according to a transform.

Parameters
streamThe output stream.
transformA 2D transform to be applied.

Reimplemented from LibBoard::Polyline.

Definition at line 2496 of file Shapes.cpp.

2498{
2499 double x1, y1, x2, y2, x3, y3, x4, y4; //coordinates of the control points
2500 _path[ 0 ].get(x1, y1);
2501 _path[ 1 ].get(x3, y3);
2502 _path[ 2 ].get(x4, y4);
2503 //we compute the two middle control points of a cubic Bezier curve
2504 //from the three control points of the quadratic Bezier curve
2505 x2 = x1 + 2/3.0*(x3-x1);
2506 y2 = y1 + 2/3.0*(y3-y1);
2507 x3 = x2 + 1/3.0*(x4-x1);
2508 y3 = y2 + 1/3.0*(y4-y1);
2509
2510 stream << "\\draw[" << tikzProperties(transform) << "] ("
2511 << transform.mapX( x1 ) << ',' << transform.mapY( y1 )
2512 << ") .. controls ("
2513 << transform.mapX( x2 ) << ',' << transform.mapY( y2 )
2514 << ") and ("
2515 << transform.mapX( x3 ) << ',' << transform.mapY( y3 )
2516 << ") .. ("
2517 << transform.mapX( x4 ) << ',' << transform.mapY( y4 )
2518 << ");" << std::endl;
2519}
LibBoard::Shape::tikzProperties
std::string tikzProperties(const TransformTikZ &transform) const
Definition Shapes.cpp:177

References LibBoard::Polyline::_path, and LibBoard::Shape::tikzProperties().

◆ name()

const std::string & LibBoard::QuadraticBezierCurve::name ( ) const
virtual

Returns the name of the shape (QuadraticBezierCurve)

Returns
object name

Reimplemented from LibBoard::Polyline.

Definition at line 2360 of file Shapes.cpp.

2361{
2362 return _name;
2363}
LibBoard::QuadraticBezierCurve::_name
static const std::string _name
Definition Board/Shapes.h:1215

References _name.

Field Documentation

◆ _name

const std::string LibBoard::QuadraticBezierCurve::_name
staticprivate

name of the shape.

Definition at line 1215 of file Board/Shapes.h.

Referenced by name().

The documentation for this struct was generated from the following files: