Struct DDAEnumerator

A custom enumerator used to iterate over all positions on the on a line using the DDA line algorithm efficiently.

Generally, you should use GetDDALine(Point, Point) to get an instance of this, rather than creating one yourself.

Implements
Inherited Members
Namespace: SadRogue.Primitives
Assembly: TheSadRogue.Primitives.dll
Syntax
public struct DDAEnumerator : IEnumerator<Point>, IEnumerator, IDisposable, IEnumerable<Point>, IEnumerable
Remarks

This type is a struct, and as such is much more efficient when used in a foreach loop than a function returning IEnumerable<Point> by using "yield return". This type does implement IEnumerable<T>, so you can pass it to functions which require one (for example, System.LINQ). However, this will have reduced performance due to boxing of the iterator.

Constructors

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DDAEnumerator(Point, Point)

Creates an enumerator which iterates over all positions on the line.

Declaration
public DDAEnumerator(Point start, Point end)
Parameters
Type Name Description
Point start

Starting point for the line.
Point end

Ending point for the line.

Properties

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Current

The current value for enumeration.

Declaration
public Point Current { get; }
Property Value
Type Description
Point

Methods

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GetEnumerator()

Returns this enumerator.

Declaration
public DDAEnumerator GetEnumerator()
Returns
Type Description
DDAEnumerator

This enumerator.
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MoveNext()

Advances the iterator to the next position.

Declaration
public bool MoveNext()
Returns
Type Description
bool

True if the a new position on the line exists; false otherwise.
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ToEnumerable()

Obsolete.

Declaration
[Obsolete("This method is obsolete; this structure itself implements IEnumerable directly and provides equivalent behavior, so you should no longer call this function.")]
public IEnumerable<Point> ToEnumerable()
Returns
Type Description
IEnumerable<Point>

Implements

Extension Methods