dw::core::Shape implemtation for polygons. More...

#include <types.hh>

Public Member Functions
	Polygon ()

	~Polygon ()

void	draw (core::View view, core::style::Style style, int x, int y)

void	addPoint (int x, int y)

bool	isPointWithin (int x, int y)

Public Member Functions inherited from lout::object::Object
virtual	~Object ()
	The destructor is defined as virtual (but not abstract), so that destruction of Object's works properly. More...

virtual bool	equals (Object *other)
	Returns, whether two objects are equal. More...

virtual int	hashValue ()
	Return a hash value for the object. More...

virtual Object *	clone ()
	Return an exact copy of the object. More...

virtual void	intoStringBuffer (misc::StringBuffer *sb)
	Store a textual representation of the object in a misc::StringBuffer. More...

const char *	toString ()
	Use object::Object::intoStringBuffer to return a textual representation of the object. More...

virtual size_t	sizeOf ()
	Return the number of bytes, this object totally uses. More...

Private Member Functions
int	zOfVectorProduct (int x1, int y1, int x2, int y2)
	Return the z-coordinate of the vector product of two vectors, whose z-coordinate is 0 (so that x and y of the vector product is 0, too). More...

bool	linesCross0 (int ax1, int ay1, int ax2, int ay2, int bx1, int by1, int bx2, int by2)
	Return, whether the line, limited by (ax1, ay1) and (ax2, ay2), crosses the unlimited line, determined by two points (bx1, by1) and (bx2, by2). More...

bool	linesCross (int ax1, int ay1, int ax2, int ay2, int bx1, int by1, int bx2, int by2)
	Return, whether the line, limited by (ax1, ay1) and (ax2, ay2), crosses the line, limited by (bx1, by1) and (bx2, by2). More...

Private Attributes
lout::misc::SimpleVector< Point > *	points

int	minx

int	miny

int	maxx

int	maxy

Detailed Description

dw::core::Shape implemtation for polygons.

Constructor & Destructor Documentation

dw::core::Polygon::Polygon ( )

dw::core::Polygon::~Polygon ( )

Member Function Documentation

void dw::core::Polygon::addPoint	(	int	x,
		int	y
	)

References lout::misc::max(), and lout::misc::min().

Referenced by main().

void dw::core::Polygon::draw	(	core::View *	view,
		core::style::Style *	style,
		int	x,
		int	y
	)

virtual

Implements dw::core::Shape.

References dw::core::style::StyleAttrs::color, dw::core::View::drawPolygon(), dw::core::Point::x, and dw::core::Point::y.

bool dw::core::Polygon::isPointWithin	(	int	x,
		int	y
	)

virtual

Implements dw::core::Shape.

Referenced by main().

bool dw::core::Polygon::linesCross	(	int	ax1,
		int	ay1,
		int	ax2,
		int	ay2,
		int	bx1,
		int	by1,
		int	bx2,
		int	by2
	)

private

Return, whether the line, limited by (ax1, ay1) and (ax2, ay2), crosses the line, limited by (bx1, by1) and (bx2, by2).

bool dw::core::Polygon::linesCross0	(	int	ax1,
		int	ay1,
		int	ax2,
		int	ay2,
		int	bx1,
		int	by1,
		int	bx2,
		int	by2
	)

private

Return, whether the line, limited by (ax1, ay1) and (ax2, ay2), crosses the unlimited line, determined by two points (bx1, by1) and (bx2, by2).

TODO Some more description

int dw::core::Polygon::zOfVectorProduct	(	int	x1,
		int	y1,
		int	x2,
		int	y2
	)

inlineprivate

Return the z-coordinate of the vector product of two vectors, whose z-coordinate is 0 (so that x and y of the vector product is 0, too).

Member Data Documentation

int dw::core::Polygon::maxx

private

int dw::core::Polygon::maxy

private

int dw::core::Polygon::minx

private

int dw::core::Polygon::miny

private

lout::misc::SimpleVector<Point>* dw::core::Polygon::points

private

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

dw/types.hh
dw/types.cc

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation