boost::geometry::strategy::buffer::distance_asymmetric< NumericType > Class Template Reference

Let the buffer for linestrings be asymmetric. More...

#include <buffer_distance_asymmetric.hpp>

Public Member Functions
	distance_asymmetric (NumericType const &left, NumericType const &right)
	Constructs the strategy, two distances must be specified. More...
template<typename Point >
NumericType	apply (Point const &, Point const &, buffer_side_selector side) const
	Returns the distance-value for the specified side. More...
int	factor () const
	Used internally, returns -1 for deflate, 1 for inflate. More...
bool	negative () const
	Returns true if both distances are negative. More...
template<typename JoinStrategy , typename EndStrategy >
NumericType	max_distance (JoinStrategy const &join_strategy, EndStrategy const &end_strategy) const
	Returns the max distance distance up to the buffer will reach. More...
NumericType	simplify_distance () const
	Returns the distance at which the input is simplified before the buffer process. More...

Detailed Description

template<typename NumericType>
class boost::geometry::strategy::buffer::distance_asymmetric< NumericType >

Let the buffer for linestrings be asymmetric.

Template Parameters

NumericType

This strategy can be used as DistanceStrategy for the buffer algorithm. It can be applied for (multi)linestrings. It uses a (potentially) different distances for left and for right. This means the (multi)linestrings are interpreted having a direction.

{ [heading Example] [buffer_distance_asymmetric] [heading Output] [$img/strategies/buffer_distance_asymmetric.png] [heading See also]

• [link geometry.reference.algorithms.buffer.buffer_7_with_strategies buffer (with strategies)]
• [link geometry.reference.strategies.strategy_buffer_distance_symmetric distance_symmetric] }

Constructor & Destructor Documentation

template<typename NumericType >

boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::distance_asymmetric ( NumericType const &  left, NumericType const &  right  )

inline

Constructs the strategy, two distances must be specified.

Parameters

left	The distance (or radius) of the buffer on the left side
right	The distance on the right side

Member Function Documentation

template<typename NumericType >

template<typename Point >

NumericType boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::apply ( Point const &  , Point const &  , buffer_side_selector  side  ) const

inline

Returns the distance-value for the specified side.

References boost::geometry::math::abs(), boost::geometry::strategy::buffer::buffer_side_left, and boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::negative().

template<typename NumericType >

int boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::factor ( ) const

inline

Used internally, returns -1 for deflate, 1 for inflate.

References boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::negative().

template<typename NumericType >

template<typename JoinStrategy , typename EndStrategy >

NumericType boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::max_distance ( JoinStrategy const &  join_strategy, EndStrategy const &  end_strategy  ) const

inline

Returns the max distance distance up to the buffer will reach.

References boost::geometry::math::abs(), boost::bimaps::support::left, boost::accumulators::extract::max, and boost::icl::right().

template<typename NumericType >

bool boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::negative ( ) const

inline

Returns true if both distances are negative.

Referenced by boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::apply(), and boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::factor().

template<typename NumericType >

NumericType boost::geometry::strategy::buffer::distance_asymmetric< NumericType >::simplify_distance ( ) const

inline

Returns the distance at which the input is simplified before the buffer process.

References boost::geometry::math::abs(), boost::bimaps::support::left, boost::accumulators::extract::min, and boost::icl::right().

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The documentation for this class was generated from the following file:

• boost_1_57_0/boost/geometry/strategies/agnostic/buffer_distance_asymmetric.hpp