Package org.geotools.geometry.jts
Class PackedLineIterator
- Object
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- AbstractLiteIterator
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- PackedLineIterator
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- All Implemented Interfaces:
PathIterator
public final class PackedLineIterator extends AbstractLiteIterator
A path iterator for the LiteShape class, specialized to iterate over LineString object.- Author:
- Andrea Aime
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Field Summary
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Fields inherited from class AbstractLiteIterator
dcoords
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Fields inherited from interface PathIterator
SEG_CLOSE, SEG_CUBICTO, SEG_LINETO, SEG_MOVETO, SEG_QUADTO, WIND_EVEN_ODD, WIND_NON_ZERO
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Constructor Summary
Constructors Constructor Description PackedLineIterator(LineString ls, AffineTransform at, boolean generalize, float maxDistance)
Creates a new instance of LineIterator
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
currentSegment(double[] coords)
int
currentSegment(float[] coords)
Returns the coordinates and type of the current path segment in the iteration.double
getMaxDistance()
Returns the distance limit for point skipping during distance based generalizationint
getWindingRule()
Returns the winding rule for determining the interior of the path.boolean
isDone()
Tests if the iteration is complete.void
next()
Moves the iterator to the next segment of the path forwards along the primary direction of traversal as long as there are more points in that direction.void
setMaxDistance(float distance)
Sets the distance limit for point skipping during distance based generalization
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Constructor Detail
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PackedLineIterator
public PackedLineIterator(LineString ls, AffineTransform at, boolean generalize, float maxDistance)
Creates a new instance of LineIterator- Parameters:
ls
- The line string the iterator will useat
- The affine transform applied to coordinates during iteration
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Method Detail
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setMaxDistance
public void setMaxDistance(float distance)
Sets the distance limit for point skipping during distance based generalization- Parameters:
distance
- the maximum distance for point skipping
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getMaxDistance
public double getMaxDistance()
Returns the distance limit for point skipping during distance based generalization- Returns:
- the maximum distance for distance based generalization
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currentSegment
public int currentSegment(float[] coords)
Returns the coordinates and type of the current path segment in the iteration. The return value is the path-segment type: SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE. A double array of length 6 must be passed in and can be used to store the coordinates of the point(s). Each point is stored as a pair of double x,y coordinates. SEG_MOVETO and SEG_LINETO types returns one point, SEG_QUADTO returns two points, SEG_CUBICTO returns 3 points and SEG_CLOSE does not return any points.- Specified by:
currentSegment
in interfacePathIterator
- Overrides:
currentSegment
in classAbstractLiteIterator
- Parameters:
coords
- an array that holds the data returned from this method- Returns:
- the path-segment type of the current path segment.
- See Also:
PathIterator.SEG_MOVETO
,PathIterator.SEG_LINETO
,PathIterator.SEG_QUADTO
,PathIterator.SEG_CUBICTO
,PathIterator.SEG_CLOSE
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getWindingRule
public int getWindingRule()
Returns the winding rule for determining the interior of the path.- Returns:
- the winding rule.
- See Also:
PathIterator.WIND_EVEN_ODD
,PathIterator.WIND_NON_ZERO
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isDone
public boolean isDone()
Tests if the iteration is complete.- Returns:
true
if all the segments have been read;false
otherwise.
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next
public void next()
Moves the iterator to the next segment of the path forwards along the primary direction of traversal as long as there are more points in that direction.
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currentSegment
public int currentSegment(double[] coords)
- See Also:
PathIterator.currentSegment(double[])
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