#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "index.h"
#include <float.h>
#include <math.h>
#include <grass/gis.h>

Include dependency graph for rect.c:

Macros
#define	BIG_NUM (FLT_MAX/4.0)

#define	Undefined(x, t) ((x)->boundary[0] > (x)->boundary[t->ndims_alloc])

#define	UnitSphereVolume UnitSphereVolumes[NUMDIMS]

Functions
struct RTree_Rect *	RTreeAllocRect (struct RTree *t)
	Create a new rectangle for a given tree. More...

void	RTreeFreeRect (struct RTree_Rect *r)
	Delete a rectangle. More...

RectReal *	RTreeAllocBoundary (struct RTree *t)
	Allocate the boundary array of a rectangle for a given tree. More...

void	RTreeFreeBoundary (struct RTree_Rect *r)
	Delete the boundary of a rectangle. More...

void	RTreeInitRect (struct RTree_Rect r, struct RTree t)
	Initialize a rectangle to have all 0 coordinates. More...

void	RTreeSetRect1D (struct RTree_Rect r, struct RTree t, double x_min, double x_max)
	Set one dimensional coordinates of a rectangle for a given tree. More...

void	RTreeSetRect2D (struct RTree_Rect r, struct RTree t, double x_min, double x_max, double y_min, double y_max)
	Set two dimensional coordinates of a rectangle for a given tree. More...

void	RTreeSetRect3D (struct RTree_Rect r, struct RTree t, double x_min, double x_max, double y_min, double y_max, double z_min, double z_max)
	Set three dimensional coordinates of a rectangle for a given tree. More...

void	RTreeSetRect4D (struct RTree_Rect r, struct RTree t, double x_min, double x_max, double y_min, double y_max, double z_min, double z_max, double t_min, double t_max)
	Set 4 dimensional coordinates of a rectangle for a given tree. More...

void	RTreeNullRect (struct RTree_Rect r, struct RTree t)

void	RTreePrintRect (struct RTree_Rect R, int depth, struct RTree t)

RectReal	RTreeRectVolume (struct RTree_Rect R, struct RTree t)

RectReal	RTreeRectSphericalVolume (struct RTree_Rect r, struct RTree t)

RectReal	RTreeRectSurfaceArea (struct RTree_Rect r, struct RTree t)

RectReal	RTreeRectMargin (struct RTree_Rect r, struct RTree t)

void	RTreeCombineRect (struct RTree_Rect r1, struct RTree_Rect r2, struct RTree_Rect r3, struct RTree t)

int	RTreeExpandRect (struct RTree_Rect r1, struct RTree_Rect r2, struct RTree *t)

int	RTreeCompareRect (struct RTree_Rect r, struct RTree_Rect s, struct RTree *t)

int	RTreeOverlap (struct RTree_Rect r, struct RTree_Rect s, struct RTree *t)

int	RTreeContained (struct RTree_Rect r, struct RTree_Rect s, struct RTree *t)

int	RTreeContains (struct RTree_Rect r, struct RTree_Rect s, struct RTree *t)

Variables
const double	UnitSphereVolumes []

Macro Definition Documentation

◆ BIG_NUM

#define BIG_NUM (FLT_MAX/4.0)

Definition at line 28 of file rect.c.

◆ Undefined

#define Undefined	(	x,
		t
	)	((x)->boundary[0] > (x)->boundary[t->ndims_alloc])

Definition at line 31 of file rect.c.

Referenced by RTreeCombineRect(), RTreeExpandRect(), RTreeRectSphericalVolume(), RTreeRectSurfaceArea(), and RTreeRectVolume().

◆ UnitSphereVolume

#define UnitSphereVolume UnitSphereVolumes[NUMDIMS]

Definition at line 396 of file rect.c.

Referenced by RTreeRectVolume().

Function Documentation

◆ RTreeAllocBoundary()

RectReal* RTreeAllocBoundary ( struct RTree * t )

Allocate the boundary array of a rectangle for a given tree.

This method allocated the boundary coordinates array in provided rectangle. It does not release previously allocated memory.

Parameters

r	The pointer to rectangle to initialize the boundary coordinates. This is usually a rectangle that was created on the stack or self allocated.
t	The pointer to a RTree struct

Definition at line 83 of file rect.c.

References assert, RTree_Rect::boundary, malloc(), and RTree::rectsize.

Referenced by RTreeAllocNode(), RTreeAllocRect(), and RTreeCreateTree().

◆ RTreeAllocRect()

struct RTree_Rect* RTreeAllocRect ( struct RTree * t )

Create a new rectangle for a given tree.

This method allocates a new rectangle and initializes the internal boundary coordinates based on the tree dimension.

Hence a call to RTreeNewBoundary() is not necessary.

Parameters

t	The pointer to a RTree struct

Returns: A new allocated RTree_Rect struct

Definition at line 44 of file rect.c.

References assert, RTree_Rect::boundary, malloc(), r, and RTreeAllocBoundary().

◆ RTreeCombineRect()

void RTreeCombineRect	(	struct RTree_Rect *	r1,
		struct RTree_Rect *	r2,
		struct RTree_Rect *	r3,
		struct RTree *	t
	)

Definition at line 504 of file rect.c.

References RTree_Rect::boundary, MAX, MIN, RTree::ndims, RTree::ndims_alloc, RTree::nsides_alloc, and Undefined.

◆ RTreeCompareRect()

int RTreeCompareRect	(	struct RTree_Rect *	r,
		struct RTree_Rect *	s,
		struct RTree *	t
	)

Definition at line 576 of file rect.c.

◆ RTreeContained()

int RTreeContained	(	struct RTree_Rect *	r,
		struct RTree_Rect *	s,
		struct RTree *	t
	)

Definition at line 616 of file rect.c.

◆ RTreeContains()

int RTreeContains	(	struct RTree_Rect *	r,
		struct RTree_Rect *	s,
		struct RTree *	t
	)

Definition at line 643 of file rect.c.

◆ RTreeExpandRect()

int RTreeExpandRect	(	struct RTree_Rect *	r1,
		struct RTree_Rect *	r2,
		struct RTree *	t
	)

Definition at line 541 of file rect.c.

References RTree_Rect::boundary, RTree::ndims, RTree::ndims_alloc, and Undefined.

Referenced by RTreeNodeCover().

◆ RTreeFreeBoundary()

void RTreeFreeBoundary ( struct RTree_Rect * r )

Delete the boundary of a rectangle.

This method deletes (free) the memory of the boundary of a rectangle and sets the boundary pointer to NULL.

Parameters

r	The pointer to the rectangle to delete the boundary from.

Definition at line 100 of file rect.c.

References assert, RTree_Rect::boundary, free(), and NULL.

Referenced by RTreeDestroyTree(), RTreeFreeListBranch(), RTreeFreeNode(), and RTreeFreeRect().

◆ RTreeFreeRect()

void RTreeFreeRect ( struct RTree_Rect * r )

Delete a rectangle.

This method deletes (free) the allocated memory of a rectangle.

Parameters

r	The pointer to the rectangle to be deleted

Definition at line 65 of file rect.c.

References assert, free(), and RTreeFreeBoundary().

◆ RTreeInitRect()

void RTreeInitRect	(	struct RTree_Rect *	r,
		struct RTree *	t
	)

Initialize a rectangle to have all 0 coordinates.

Definition at line 111 of file rect.c.

References RTree_Rect::boundary, and RTree::ndims_alloc.

Referenced by RTreeSetRect1D(), RTreeSetRect2D(), RTreeSetRect3D(), and RTreeSetRect4D().

◆ RTreeNullRect()

void RTreeNullRect	(	struct RTree_Rect *	r,
		struct RTree *	t
	)

Definition at line 226 of file rect.c.

References RTree_Rect::boundary, RTree::ndims_alloc, RTree::nsides_alloc, and r.

Referenced by RTreeInitPVars().

◆ RTreeOverlap()

int RTreeOverlap	(	struct RTree_Rect *	r,
		struct RTree_Rect *	s,
		struct RTree *	t
	)

Definition at line 596 of file rect.c.

◆ RTreePrintRect()

void RTreePrintRect	(	struct RTree_Rect *	R,
		int	depth,
		struct RTree *	t
	)

Definition at line 306 of file rect.c.

Referenced by RTreePrintNode().

◆ RTreeRectMargin()

RectReal RTreeRectMargin	(	struct RTree_Rect *	r,
		struct RTree *	t
	)

Definition at line 486 of file rect.c.

References RTree_Rect::boundary, RTree::ndims, and RTree::ndims_alloc.

◆ RTreeRectSphericalVolume()

RectReal RTreeRectSphericalVolume	(	struct RTree_Rect *	r,
		struct RTree *	t
	)

Definition at line 434 of file rect.c.

References RTree_Rect::boundary, RTree::ndims, RTree::ndims_alloc, Undefined, and UnitSphereVolumes.

◆ RTreeRectSurfaceArea()

RectReal RTreeRectSurfaceArea	(	struct RTree_Rect *	r,
		struct RTree *	t
	)

Definition at line 458 of file rect.c.

References RTree_Rect::boundary, RTree::ndims, RTree::ndims_alloc, and Undefined.

◆ RTreeRectVolume()

RectReal RTreeRectVolume	(	struct RTree_Rect *	R,
		struct RTree *	t
	)

Definition at line 324 of file rect.c.

References assert, RTree_Rect::boundary, M_PI, RTree::ndims, RTree::ndims_alloc, r, sphere_volume(), Undefined, and UnitSphereVolume.

◆ RTreeSetRect1D()

void RTreeSetRect1D	(	struct RTree_Rect *	r,
		struct RTree *	t,
		double	x_min,
		double	x_max
	)

Set one dimensional coordinates of a rectangle for a given tree.

All coordinates of the rectangle will be initialized to 0 before the x coordinates are set.

Parameters

r	The pointer to the rectangle
t	The pointer to the RTree
x_min	The lower x coordinate
x_max	The higher x coordinate

Definition at line 130 of file rect.c.

References RTree_Rect::boundary, RTree::ndims_alloc, and RTreeInitRect().

◆ RTreeSetRect2D()

void RTreeSetRect2D	(	struct RTree_Rect *	r,
		struct RTree *	t,
		double	x_min,
		double	x_max,
		double	y_min,
		double	y_max
	)

Set two dimensional coordinates of a rectangle for a given tree.

All coordinates of the rectangle will be initialized to 0 before the x and y coordinates are set.

Parameters

r	The pointer to the rectangle
t	The pointer to the RTree
x_min	The lower x coordinate
x_max	The higher x coordinate
y_min	The lower y coordinate
y_max	The higher y coordinate

Definition at line 151 of file rect.c.

References RTree_Rect::boundary, RTree::ndims_alloc, and RTreeInitRect().

◆ RTreeSetRect3D()

void RTreeSetRect3D	(	struct RTree_Rect *	r,
		struct RTree *	t,
		double	x_min,
		double	x_max,
		double	y_min,
		double	y_max,
		double	z_min,
		double	z_max
	)

Set three dimensional coordinates of a rectangle for a given tree.

All coordinates of the rectangle will be initialized to 0 before the x,y and z coordinates are set.

Parameters

r	The pointer to the rectangle
t	The pointer to the RTree
x_min	The lower x coordinate
x_max	The higher x coordinate
y_min	The lower y coordinate
y_max	The higher y coordinate
z_min	The lower z coordinate
z_max	The higher z coordinate

Definition at line 176 of file rect.c.

References RTree_Rect::boundary, RTree::ndims_alloc, and RTreeInitRect().

◆ RTreeSetRect4D()

void RTreeSetRect4D	(	struct RTree_Rect *	r,
		struct RTree *	t,
		double	x_min,
		double	x_max,
		double	y_min,
		double	y_max,
		double	z_min,
		double	z_max,
		double	t_min,
		double	t_max
	)

Set 4 dimensional coordinates of a rectangle for a given tree.

All coordinates of the rectangle will be initialized to 0 before the x,y,z and t coordinates are set.

Parameters

r	The pointer to the rectangle
t	The pointer to the RTree
x_min	The lower x coordinate
x_max	The higher x coordinate
y_min	The lower y coordinate
y_max	The higher y coordinate
z_min	The lower z coordinate
z_max	The higher z coordinate
t_min	The lower t coordinate
t_max	The higher t coordinate

Definition at line 206 of file rect.c.

References assert, RTree_Rect::boundary, RTree::ndims, RTree::ndims_alloc, and RTreeInitRect().

Variable Documentation

◆ UnitSphereVolumes

const double UnitSphereVolumes[]

Initial value:

Definition at line 369 of file rect.c.

Referenced by RTreeRectSphericalVolume().

Macros

Functions

Variables

Macro Definition Documentation

◆ BIG_NUM

◆ Undefined

◆ UnitSphereVolume

Function Documentation

◆ RTreeAllocBoundary()

◆ RTreeAllocRect()

◆ RTreeCombineRect()

◆ RTreeCompareRect()

◆ RTreeContained()

◆ RTreeContains()

◆ RTreeExpandRect()

◆ RTreeFreeBoundary()

◆ RTreeFreeRect()

◆ RTreeInitRect()

◆ RTreeNullRect()

◆ RTreeOverlap()

◆ RTreePrintRect()

◆ RTreeRectMargin()

◆ RTreeRectSphericalVolume()

◆ RTreeRectSurfaceArea()

◆ RTreeRectVolume()

◆ RTreeSetRect1D()

◆ RTreeSetRect2D()

◆ RTreeSetRect3D()

◆ RTreeSetRect4D()

Variable Documentation

◆ UnitSphereVolumes