Class RingClipper
In general the output is not topologically valid.
In particular, the output may contain coincident non-noded line segments
along the clip rectangle sides.
However, the output is sufficiently well-structured
that it can be used as input to the OverlayNG
algorithm
(which is able to process coincident linework due
to the need to handle topology collapse under precision reduction).
Because of the likelihood of creating extraneous line segments along the clipping rectangle sides, this class is not suitable for clipping linestrings.
The clipping envelope should be generated using RobustClipEnvelopeComputer
,
to ensure that intersecting line segments are not perturbed
by clipping.
This is required to ensure that the overlay of the
clipped geometry is robust and correct (i.e. the same as
if clipping was not used).
- Author:
- Martin Davis
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionclip
(Coordinate[] pts) Clips a list of points to the clipping rectangle box.
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Constructor Details
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RingClipper
Creates a new clipper for the given envelope.- Parameters:
clipEnv
- the clipping envelope
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Method Details
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clip
Clips a list of points to the clipping rectangle box.- Parameters:
pts
-- Returns:
- clipped pts array
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