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Double Polylines ( DPolyline )

Baseclasses

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

Definition

An instance dpl of type DPolyline is a list dp₁,..., dp_n of double points dp_i.

#include < AGD/DPolyline.h >

Creation

DPolyline dpl creates an instance dpl of type DPolyline initialized to an empty list.

Operations

DPoint& dpl.get_point(int i) returns a reference to dp_i if dpl is dp₁,..., dp_n. Precondition: 1 < = i < = n

DPoint& dpl.get_rev_point(int i) returns a reference to dp_{n - i + 1} if dpl is dp₁,..., dp_n. Precondition: 1 < = i < = n

DSegment dpl.get_segment(int i) returns the double segment [dp_i, dp_{i + 1}] if dpl is dp₁,..., dp_n. Precondition: 1 < = i < n

DSegment dpl.get_rev_segment(int i)

returns the double segment [dp_{n - i + 1}, dp_{n - i}] if dpl is dp₁,..., dp_n. Precondition: 1 < = i < n

void dpl.reverse() reverses the list of double points.

Next: Double Rectangles ( DRect Up: Simple Geometry Previous: Double Line Segments ( Contents Index

DPoint&	dpl.get_point(int i)	returns a reference to dp_i if dpl is dp₁,..., dp_n. Precondition: 1 < = i < = n
DPoint&	dpl.get_rev_point(int i)	returns a reference to dp_{n - i + 1} if dpl is dp₁,..., dp_n. Precondition: 1 < = i < = n
DSegment	dpl.get_segment(int i)	returns the double segment [dp_i, dp_{i + 1}] if dpl is dp₁,..., dp_n. Precondition: 1 < = i < n
DSegment	dpl.get_rev_segment(int i)
		returns the double segment [dp_{n - i + 1}, dp_{n - i}] if dpl is dp₁,..., dp_n. Precondition: 1 < = i < n
void	dpl.reverse()	reverses the list of double points.