geometry.h File Reference

Go to the source code of this file.

Data Structures
struct	POINT
struct	LINE
struct	POLYGON
struct	LINEVECTOR
struct	POLYGONVECTOR
struct	polygon_connection_attributes
struct	attribute_point_array
struct	attribute_line_array
struct	polygon_connection_attribute_array

Macros
#define	MISSING_ELEMENT   -99
#define	TRUE   1
#define	FALSE   0

Typedefs
typedef void	attribute_point
typedef void	attribute_line
typedef void	attribute_polygon

Functions
POINT *	new_point (long index, double x, double y, double z)
LINE *	new_line_from_points (long index, POINT *P1, POINT *P2)
POLYGON *	new_polygon_from_a_linevector (LINEVECTOR *lines, POINT *centroid)
LINEVECTOR *	new_linevector (long nh)
POLYGONVECTOR *	new_polygonvector (long nh)

Macro Definition Documentation

#define FALSE   0

Definition at line 28 of file geometry.h.

Referenced by check_3_numbers().

#define MISSING_ELEMENT   -99

Definition at line 26 of file geometry.h.

#define TRUE   1

Definition at line 27 of file geometry.h.

Referenced by check_3_numbers().

Typedef Documentation

typedef void attribute_line

Definition at line 81 of file geometry.h.

typedef void attribute_point

Definition at line 80 of file geometry.h.

typedef void attribute_polygon

Definition at line 82 of file geometry.h.

Function Documentation

LINE* new_line_from_points	(	long	index,
		POINT *	P1,
		POINT *	P2
	)

Author

Emanuele Cordano

Date

October 2008

index - (long) line index

Parameters

P1	- (POINT *) begin point of the line
P2	- (POINT *) end point of the line

Returns

creates a line between two point

Warning

Once allocated the line, the two points P1 and P2 are dellacated!!!

Definition at line 62 of file geometry.c.

References LINE::begin, distance2D(), LINE::end, POINT::index, LINE::index, LINE::length2d, new_point(), t_error(), POINT::x, POINT::y, and POINT::z.

Referenced by extract_linvector_from_linevector(), get_line(), new_horizontal_line_from_raster(), new_line_from_line(), new_vertical_line_from_raster(), and read_linevector().

LINEVECTOR* new_linevector

(

long

nh)

Author

Emanuele Cordano

Date

November 2008

Returns

allocates a line vector with nh elements

Definition at line 94 of file geometry.c.

References LINEVECTOR::element, isDynamic, LINEVECTOR::isdynamic, LINEVECTOR::nh, NL, LINEVECTOR::nl, NR_END, and t_error().

Referenced by extract_linvector_from_linevector(), get_linevector(), get_linevector_from_raster_grid(), new_linevector_from_linevector(), and read_linevector().

POINT* new_point	(	long	index,
		double	x,
		double	y,
		double	z
	)

BGEOMETRY BUILDS THE MESH FROM A RASTER FOR THE BOUSSINESQ MODEL

KeyPalette Version 0.9375 KMackenzie

file geometry.c

Copyright, 2009 Emanuele Cordano and Riccardo Rigon

This file is part of BGEOMETRY. BGEOMETRY is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

BGEOMETRY is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Author

Emanuele Cordano

Date

October 2008

Parameters

index	- (long) point index
x	- (double) x coordinate
y	- (doulbe) y coordinate
z	- (double) z coordinate

Returns

cretes a new point with fixed coordinates and index (Point Attributes are not allocated!!)

Definition at line 29 of file geometry.c.

References POINT::index, t_error(), POINT::x, POINT::y, and POINT::z.

Referenced by get_line(), get_polygon(), new_line_from_points(), new_point_from_point(), new_point_from_raster(), new_polygon_from_a_linevector(), read_linevector(), and read_polygon().

POLYGON* new_polygon_from_a_linevector	(	LINEVECTOR *	lines,
		POINT *	centroid
	)

Author

Emanuele Cordano, Davide Giacomelli

Date

October 2008

Parameters

lines	- (LINEVECTOR *) a vector of lines
centrod	- (POINT *) the centroid of the polygon

Returns

creates a polygon with edges taken by the line vector (Polygon Attributes are not allocated!!)

Definition at line 145 of file geometry.c.

References POLYGON::area2D, area2d(), LINE::begin, POLYGON::centroid, POLYGON::edge_indices, LINEVECTOR::element, LINE::end, free_longvector(), POINT::index, LINE::index, POLYGON::index, new_longvector(), new_point(), LINEVECTOR::nh, LINEVECTOR::nl, query_freq_longvector(), segment_intersection_occurence(), t_error(), POINT::x, POINT::y, and POINT::z.

Referenced by get_polygon(), and new_pixel_from_raster().

POLYGONVECTOR* new_polygonvector

(

long

nh)

Author

Emanuele Cordano

Date

November 2008

Returns

allocates a polygon vector with nh elements

Definition at line 119 of file geometry.c.

References POLYGONVECTOR::element, isDynamic, POLYGONVECTOR::isdynamic, POLYGONVECTOR::nh, NL, POLYGONVECTOR::nl, NR_END, and t_error().

Referenced by get_polygonvector(), get_polygonvector_from_raster(), new_polygonvector_from_polygonvector(), and read_polygonvector().