#include <cartotype_base.h>
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| | CoordSet (const double *aX, const double *aY, size_t aCount) noexcept |
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| | CoordSet (const double *aCoordArray, size_t aCount) noexcept |
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| template<class point_t > |
| | CoordSet (const point_t *aPointArray, size_t aCount) noexcept |
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| template<class point_t > |
| | CoordSet (const std::vector< point_t > &aPointArray) noexcept |
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| double | X (size_t aIndex) const noexcept |
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| double | Y (size_t aIndex) const noexcept |
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| PointFP | Point (size_t aIndex) const noexcept |
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| size_t | Count () const noexcept |
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| double | DistanceFromPoint (bool aIsPolygon, double aX, double aY, double &aNearestX, double &aNearestY) const noexcept |
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| bool | PolygonContains (double aX, double aY) const noexcept |
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A non-owned ordered set of 2D coordinates accessed via pointers to the first X and first Y coordinate.
◆ CoordSet() [1/5]
| CartoTypeCore::CoordSet::CoordSet |
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const double * |
aX, |
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const double * |
aY, |
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size_t |
aCount |
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) |
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inlinenoexcept |
Creates a coordinate set from two separate contiguous arrays of points. aX points to a contiguous array of X coordinates. aY points to a contiguous array of Y coordinates. aCount is the number of coordinate pairs.
◆ CoordSet() [2/5]
| CartoTypeCore::CoordSet::CoordSet |
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const double * |
aCoordArray, |
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size_t |
aCount |
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) |
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inlinenoexcept |
Creates a coordinate set from an array of aCount numbers, arranged in x,y pairs; aCount must be an even number.
◆ CoordSet() [3/5]
template<class point_t >
| CartoTypeCore::CoordSet::CoordSet |
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const point_t * |
aPointArray, |
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size_t |
aCount |
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) |
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inlinenoexcept |
Creates a coordinate set from an array of aCount point objects.
◆ CoordSet() [4/5]
template<class point_t >
| CartoTypeCore::CoordSet::CoordSet |
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const std::vector< point_t > & |
aPointArray | ) |
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inlinenoexcept |
Creates a coordinate set from a vector of point objects.
◆ CoordSet() [5/5]
| constexpr CartoTypeCore::CoordSet::CoordSet |
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inlineconstexprprotectednoexcept |
Creates an empty coordinate set.
◆ Count()
| size_t CartoTypeCore::CoordSet::Count |
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const |
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inlinenoexcept |
Returns the number of points in the coordinate set.
◆ DistanceFromPoint()
| double CartoTypeCore::CoordSet::DistanceFromPoint |
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bool |
aIsPolygon, |
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double |
aX, |
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double |
aY, |
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double & |
aNearestX, |
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double & |
aNearestY |
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) |
| const |
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noexcept |
Finds the distance from a point to a set of coordinates treated as either a line or a polygon.
This function ignores curves. It treats the contour as a series of straight lines.
If the contour is open (aIsPolygon is true) the distance is to the nearest point on a line segment. If the contour is closed (aIsPolygon is false) the distance is zero if the point is inside, otherwise it is the distance to the nearest point on an edge.
Use aNearestX and aNearestY to return the coordinates of the nearest point on the contour, or the original point if the contour is closed and the point is inside.
If the contour is empty return DBL_MAX.
◆ Point()
| PointFP CartoTypeCore::CoordSet::Point |
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size_t |
aIndex | ) |
const |
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inlinenoexcept |
Returns the point at a specified index.
◆ PolygonContains()
| bool CartoTypeCore::CoordSet::PolygonContains |
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double |
aX, |
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double |
aY |
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) |
| const |
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noexcept |
Return true if a polygon defined by a list of coordinates contains the point (aX,aY).
◆ X()
| double CartoTypeCore::CoordSet::X |
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size_t |
aIndex | ) |
const |
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inlinenoexcept |
Returns the X coordinate at a specified index.
◆ Y()
| double CartoTypeCore::CoordSet::Y |
( |
size_t |
aIndex | ) |
const |
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inlinenoexcept |
Returns the Y coordinate at a specified index.
◆ m_count
| size_t CartoTypeCore::CoordSet::m_count { 0 } |
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protected |
The number of points (pairs of coordinates).
◆ m_stride
| size_t CartoTypeCore::CoordSet::m_stride { 0 } |
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protected |
The distance in bytes between successive X or Y coordinates.
◆ m_x
| const double* CartoTypeCore::CoordSet::m_x { nullptr } |
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protected |
A pointer to the first X coordinate.
◆ m_y
| const double* CartoTypeCore::CoordSet::m_y { nullptr } |
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protected |
A pointer to the first Y coordinate.
The documentation for this class was generated from the following files:
- cartotype_base.h
- cartotype_base.cpp
