curve2d.h File Reference

#include <cairo/cairo.h>
#include "settings.h"

Go to the source code of this file.

Data Structures
struct	_curve2d
	Representation of a polygon in 2D. More...

Typedefs
typedef struct _curve2d	curve2d
	Abbreviation for struct _curve2d .
typedef curve2d *	pcurve2d
	Abbreviation for a pointer to a curve2d object.
typedef const curve2d *	pccurve2d
	Abbreviation for a pointer to constant a curve2d object.

Functions
pcurve2d	new_curve2d (uint vertices, uint edges)
	create a new curve2d object with a certain number of vertice and edges. More...
void	prepare_curve2d (pcurve2d gr)
	This function computes the normal vectors n , the gram determinants g from the geometrical information. More...
void	del_curve2d (pcurve2d gr)
	Free Storage allocated for a curve2d object. More...
pcurve2d	new_circle_curve2d (uint edges, real r)
	Create a new polygon approximation of a circle with edges and radius around the origin. More...
pcurve2d	new_square_curve2d (uint edges, real a)
	Create a new square with edges and edge length around the origin. More...
pcurve2d	new_hilbert_curve2d (uint n, real l)
	Create a new Hilbert-curve of order . and edge length around the origin. More...
pcurve2d	new_star_curve2d (uint edges, real r)
	Create a new polygon of a star with 16 spikes, edges and radius around the origin. More...
void	print_curve2d (pccurve2d gr)
	print geometrical information to stdout. More...
void	draw_curve2d (pccurve2d gr, cairo_t *cr, real scale)
	Draw the polygon to a cairo surface. More...

Detailed Description

Author

Steffen Börm