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Integer Polylines ( IPolyline )

Baseclasses

$\begin{picture}(6.5,2.5) \thicklines \put(0,1.5){\framebox (5,1){\bf list{\tt ... ...2){\vector(0,-1){1}}\put(1.5,0){\framebox (5,1){\bf IPolyline}} \end{picture}$

Definition

An instance ipl of type IPolyline is a list ip₁,..., ip_n of integer points ip_i.

#include < AGD/IPolyline.h >

Creation

IPolyline ipl creates an instance ipl of type IPolyline initialized to an empty list.

Operations

IPoint& ipl.get_point(int i) returns a reference to ip_i if ipl is ip₁,..., ip_n. Precondition: 1 < = i < = n

IPoint& ipl.get_rev_point(int i) returns a reference to ip_{n - i + 1} if ipl is ip₁,..., ip_n. Precondition: 1 < = i < = n

ISegment ipl.get_segment(int i) returns the integer segment [ip_i, ip_{i + 1}] if ipl is ip₁,..., ip_n. Precondition: 1 < = i < n

ISegment ipl.get_rev_segment(int i)

returns the integer segment [ip_{n - i + 1}, ip_{n - i}] if ipl is ip₁,..., ip_n. Precondition: 1 < = i < n

void ipl.reverse() reverses the list of integer points.

Next: Integer Rectangles ( IRect Up: Simple Geometry Previous: Integer Line Segments ( Contents Index

IPoint&	ipl.get_point(int i)	returns a reference to ip_i if ipl is ip₁,..., ip_n. Precondition: 1 < = i < = n
IPoint&	ipl.get_rev_point(int i)	returns a reference to ip_{n - i + 1} if ipl is ip₁,..., ip_n. Precondition: 1 < = i < = n
ISegment	ipl.get_segment(int i)	returns the integer segment [ip_i, ip_{i + 1}] if ipl is ip₁,..., ip_n. Precondition: 1 < = i < n
ISegment	ipl.get_rev_segment(int i)
		returns the integer segment [ip_{n - i + 1}, ip_{n - i}] if ipl is ip₁,..., ip_n. Precondition: 1 < = i < n
void	ipl.reverse()	reverses the list of integer points.