D:/usuarios/rodrigof/svn/tdk/src/peer/components/core/TdkTecGAlg.cpp File Reference

#include <math.h>
#include <float.h>
#include "TeGeometry.h"
#include "TeException.h"
#include "TeGeometryAlgorithms.h"
#include "TdkTecGAlg.h"

Defines
#define	TE_LEFT   1
#define	TE_RIGHT   2
#define	TE_BOTTON   4
#define	TE_TOP   8
Functions
static int	RegionCode (double x, double y, double xmin, double ymin, double xmax, double ymax)
static bool	IsDisjointLC (double x0, double y0, double x1, double y1, double x, double y, double r)
	Retuns true if the given line and circle are disjoint.
bool	TeTecIsDisjoint (TeLine2D &polyline, double xmin, double ymin, double xmax, double ymax)
	Check if the given geometry object is disjoint from the given box.
bool	TeTecIsDisjoint (TeLinearRing &ring, double xc, double yc, double r)
bool	TeTecIsDisjoint (TeLinearRing &ring, double xmin, double ymin, double xmax, double ymax)
bool	TeTecIsInside (double xmin, double ymin, double xmax, double ymax, TeLinearRing &ring)
bool	TeTecIsDisjoint (TePolygon &poly, double xmin, double ymin, double xmax, double ymax)
bool	TeTecIsDisjoint (TeLine2D &polyline, double xc, double yc, double r)
bool	TeTecIsDisjoint (double xc, double yc, double r, double xmin, double ymin, double xmax, double ymax)
bool	TeTecIsDisjoint (TePolygon &poly, double xc, double yc, double r)
void	TeDistanceAndAzimuth (double x0, double y0, double x1, double y1, double *d, double *a)
	Computes the distance and the azimuth between two given points.

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Define Documentation

#define TE_BOTTON   4

#define TE_LEFT   1

Tecgraf - GIS development team

Tdk Framework

@(#) TdkTecAlg.h

#define TE_RIGHT   2

#define TE_TOP   8

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Function Documentation

static bool IsDisjointLC	(	double	x0,
		double	y0,
		double	x1,
		double	y1,
		double	x,
		double	y,
		double	r
	)			[static]

Retuns true if the given line and circle are disjoint.

static int RegionCode	(	double	x,
		double	y,
		double	xmin,
		double	ymin,
		double	xmax,
		double	ymax
	)			[static]

void TeDistanceAndAzimuth	(	double	x0,
		double	y0,
		double	x1,
		double	y1,
		double *	d,
		double *	a
	)

Computes the distance and the azimuth between two given points.

Parameters:

	x0,y0	coordinates of the first point
	y1,y1	coordinates of the second point

Return values:

	d	computed distance
	a	computed azimuth in degrees

bool TeTecIsDisjoint	(	TePolygon &	poly,
		double	xc,
		double	yc,
		double	r
	)

Actualy this function doesn't work correctely for polygons with holes. There is missing the implementation of the function for checking if the given circle is completely inside the given polygon.

bool TeTecIsDisjoint	(	double	xc,
		double	yc,
		double	r,
		double	xmin,
		double	ymin,
		double	xmax,
		double	ymax
	)

bool TeTecIsDisjoint	(	TeLine2D &	polyline,
		double	xc,
		double	yc,
		double	r
	)

bool TeTecIsDisjoint	(	TePolygon &	poly,
		double	xmin,
		double	ymin,
		double	xmax,
		double	ymax
	)

bool TeTecIsDisjoint	(	TeLinearRing &	ring,
		double	xmin,
		double	ymin,
		double	xmax,
		double	ymax
	)

bool TeTecIsDisjoint	(	TeLinearRing &	ring,
		double	xc,
		double	yc,
		double	r
	)

bool TeTecIsDisjoint	(	TeLine2D &	polyline,
		double	xmin,
		double	ymin,
		double	xmax,
		double	ymax
	)

Check if the given geometry object is disjoint from the given box.

As the set of geometries algoritms provided by the Terralib kernel is incomplete and some of them are even wrong, this set of functions were made in order to complement those algoritms.

bool TeTecIsInside	(	double	xmin,
		double	ymin,
		double	xmax,
		double	ymax,
		TeLinearRing &	ring
	)

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