Mercator::Edge Class Reference

The edge of an area. More...

Public Member Functions
	Edge (const Point2 &a, const Point2 &b)
	Constructor. More...
Point2	start () const
	Accessor for the point describing the start of the edge. More...
Point2	end () const
	Determine the point describing the end of the edge. More...
WFMath::CoordType	xValueAtZ (WFMath::CoordType z) const
	Determine the x coordinate at a given y coordinate. More...
bool	operator< (const Edge &other) const
	Compare the y coordinate of the start with another edge. More...

Detailed Description

The edge of an area.

Definition at line 32 of file AreaShader.cpp.

Constructor & Destructor Documentation

Edge()

Mercator::Edge::Edge ( const Point2 &  a, const Point2 &  b  )

inline

Constructor.

Parameters

a	one end of the line defining the edge.
b	one end of the line defining the edge.

Definition at line 39 of file AreaShader.cpp.

Member Function Documentation

end()

Point2 Mercator::Edge::end ( ) const

inline

Determine the point describing the end of the edge.

Definition at line 60 of file AreaShader.cpp.

operator<()

bool Mercator::Edge::operator< ( const Edge &  other ) const

inline

Compare the y coordinate of the start with another edge.

This operator ensures that edges can be sorted, compares the y y coordinate of the start of the edges.

Definition at line 78 of file AreaShader.cpp.

start()

Point2 Mercator::Edge::start ( ) const

inline

Accessor for the point describing the start of the edge.

Definition at line 58 of file AreaShader.cpp.

xValueAtZ()

WFMath::CoordType Mercator::Edge::xValueAtZ ( WFMath::CoordType  z ) const

inline

Determine the x coordinate at a given y coordinate.

Calculate the x coordinate on the edge line where the y coordinate is the value specified.

Parameters

z	the y coordinate where the calculation is required.

Definition at line 67 of file AreaShader.cpp.

Referenced by Mercator::EdgeAtZ::operator()().

---

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

• AreaShader.cpp