Class MCIndexPointSnapper

java.lang.Object

org.locationtech.jts.noding.snapround.MCIndexPointSnapper

public class MCIndexPointSnapper
extends Object

"Snaps" all SegmentStrings in a SpatialIndex containing MonotoneChains to a given HotPixel.

Version:

1.7

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MCIndexPointSnapper.HotPixelSnapAction

Constructor Summary

Constructors

Constructor	Description
MCIndexPointSnapper(SpatialIndex index)

Method Summary

Modifier and Type	Method	Description
Envelope	getSafeEnvelope(HotPixel hp)	Returns a "safe" envelope that is guaranteed to contain the hot pixel.
boolean	snap(HotPixel hotPixel)
boolean	snap(HotPixel hotPixel, SegmentString parentEdge, int hotPixelVertexIndex)	Snaps (nodes) all interacting segments to this hot pixel.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MCIndexPointSnapper

public MCIndexPointSnapper(SpatialIndex index)

Method Details

snap

public boolean snap(HotPixel hotPixel,
 SegmentString parentEdge,
 int hotPixelVertexIndex)

Snaps (nodes) all interacting segments to this hot pixel. The hot pixel may represent a vertex of an edge, in which case this routine uses the optimization of not noding the vertex itself

Parameters:

hotPixel - the hot pixel to snap to

parentEdge - the edge containing the vertex, if applicable, or null

hotPixelVertexIndex - the index of the hotPixel vertex, if applicable, or -1

Returns:

true if a node was added for this pixel

snap

public boolean snap(HotPixel hotPixel)

getSafeEnvelope

public Envelope getSafeEnvelope(HotPixel hp)

Returns a "safe" envelope that is guaranteed to contain the hot pixel. The envelope returned is larger than the exact envelope of the pixel by a safe margin.

Returns:

an envelope which contains the hot pixel