Spiro Namespace Reference

Classes
class	ConverterPath
	Converts Spiro to 2Geom's Path. More...
struct	spiro_cp

Typedefs
typedef struct spiro_seg_s	spiro_seg

Functions
Geom::Path	spiro_run (const spiro_cp *src, int src_len)
static void	integrate_spiro (const double ks[4], double xy[2])
static double	compute_ends (const double ks[4], double ends[2][4], double seg_ch)
static void	compute_pderivs (const spiro_seg *s, double ends[2][4], double derivs[4][2][4], int jinc)
static double	mod_2pi (double th)
static spiro_seg *	setup_path (const spiro_cp *src, int n)
static void	bandec11 (bandmat *m, int *perm, int n)
static void	banbks11 (const bandmat *m, const int *perm, double *v, int n)
static int	compute_jinc (char ty0, char ty1)
static int	count_vec (const spiro_seg *s, int nseg)
static void	add_mat_line (bandmat *m, double *v, double derivs[4], double x, double y, int j, int jj, int jinc, int nmat)
static double	spiro_iter (spiro_seg *s, bandmat *m, int *perm, double *v, const int n)
static int	solve_spiro (spiro_seg *s, const int nseg)
static void	spiro_seg_to_otherpath (const double ks[4], double x0, double y0, double x1, double y1, ConverterPath &bc, int depth, bool close_last)
spiro_seg *	run_spiro (const spiro_cp *src, int n)
void	free_spiro (spiro_seg *s)
void	spiro_to_otherpath (const spiro_seg *s, int n, ConverterPath &bc)
double	get_knot_th (const spiro_seg *s, int i)

Variables
int	n = 4

Typedef Documentation

spiro_seg

typedef struct spiro_seg_s Spiro::spiro_seg

Definition at line 29 of file spiro.h.

Function Documentation

add_mat_line()

static void Spiro::add_mat_line ( bandmat *  m, double *  v, double  derivs[4], double  x, double  y, int  j, int  jj, int  jinc, int  nmat  )

static

Definition at line 637 of file spiro.cpp.

Referenced by spiro_iter().

banbks11()

static void Spiro::banbks11 ( const bandmat *  m, const int *  perm, double *  v, int  n  )

static

Definition at line 583 of file spiro.cpp.

References n.

Referenced by spiro_iter().

bandec11()

static void Spiro::bandec11 ( bandmat *  m, int *  perm, int  n  )

static

Definition at line 535 of file spiro.cpp.

References n.

Referenced by spiro_iter().

compute_ends()

static double Spiro::compute_ends ( const double  ks[4], double  ends[2][4], double  seg_ch  )

static

Definition at line 429 of file spiro.cpp.

References integrate_spiro().

Referenced by compute_pderivs(), and get_knot_th().

compute_jinc()

static int Spiro::compute_jinc ( char  ty0, char  ty1  )

static

Definition at line 612 of file spiro.cpp.

Referenced by count_vec(), and spiro_iter().

compute_pderivs()

static void Spiro::compute_pderivs ( const spiro_seg *  s, double  ends[2][4], double  derivs[4][2][4], int  jinc  )

static

Definition at line 467 of file spiro.cpp.

References compute_ends(), and delta.

Referenced by spiro_iter().

count_vec()

static int Spiro::count_vec ( const spiro_seg *  s, int  nseg  )

static

Definition at line 626 of file spiro.cpp.

References compute_jinc(), and n.

Referenced by solve_spiro(), and spiro_iter().

free_spiro()

void Spiro::free_spiro

(

spiro_seg *

s

)

Definition at line 896 of file spiro.cpp.

get_knot_th()

double Spiro::get_knot_th	(	const spiro_seg *	s,
		int	i
	)

Definition at line 921 of file spiro.cpp.

References compute_ends().

integrate_spiro()

static void Spiro::integrate_spiro ( const double  ks[4], double  xy[2]  )

static

Definition at line 65 of file spiro.cpp.

References n.

Referenced by compute_ends(), print_seg(), spiro_seg_to_otherpath(), and test_integ().

mod_2pi()

static double Spiro::mod_2pi ( double  th )

static

Definition at line 489 of file spiro.cpp.

References floor().

Referenced by setup_path(), and spiro_iter().

run_spiro()

spiro_seg * Spiro::run_spiro	(	const spiro_cp *	src,
		int	n
	)

Definition at line 886 of file spiro.cpp.

References n, setup_path(), solve_spiro(), and Spiro::spiro_cp::ty.

Referenced by spiro_run().

setup_path()

static spiro_seg * Spiro::setup_path ( const spiro_cp *  src, int  n  )

static

Definition at line 496 of file spiro.cpp.

References mod_2pi(), n, Spiro::spiro_cp::ty, Spiro::spiro_cp::x, and Spiro::spiro_cp::y.

Referenced by run_spiro(), and test_curve().

solve_spiro()

static int Spiro::solve_spiro ( spiro_seg *  s, const int  nseg  )

static

Definition at line 792 of file spiro.cpp.

References count_vec(), and spiro_iter().

Referenced by run_spiro(), and test_curve().

spiro_iter()

static double Spiro::spiro_iter ( spiro_seg *  s, bandmat *  m, int *  perm, double *  v, const int  n  )

static

Definition at line 658 of file spiro.cpp.

References add_mat_line(), banbks11(), bandec11(), compute_jinc(), compute_pderivs(), count_vec(), mod_2pi(), and n.

Referenced by solve_spiro().

spiro_run()

Geom::Path Spiro::spiro_run	(	const spiro_cp *	src,
		int	src_len
	)

Definition at line 23 of file spiro.cpp.

References run_spiro(), and spiro_to_otherpath().

Referenced by Geom::Interpolate::SpiroInterpolator::interpolateToPath(), Inkscape::LivePathEffect::path_from_piecewise_fix_cusps(), and Inkscape::LivePathEffect::sp_spiro_do_effect().

spiro_seg_to_otherpath()

static void Spiro::spiro_seg_to_otherpath ( const double  ks[4], double  x0, double  y0, double  x1, double  y1, ConverterPath &  bc, int  depth, bool  close_last  )

static

Definition at line 826 of file spiro.cpp.

References bend(), Spiro::ConverterPath::curveto(), integrate_spiro(), Spiro::ConverterPath::lineto(), scale, and spiro_seg_to_otherpath().

Referenced by spiro_seg_to_otherpath(), and spiro_to_otherpath().

spiro_to_otherpath()

void Spiro::spiro_to_otherpath	(	const spiro_seg *	s,
		int	n,
		ConverterPath &	bc
	)

Definition at line 902 of file spiro.cpp.

References Spiro::ConverterPath::moveto(), n, and spiro_seg_to_otherpath().

Referenced by spiro_run().

Variable Documentation

n

int Spiro::n = 4

Definition at line 57 of file spiro.cpp.

Referenced by banbks11(), bandec11(), count_vec(), integrate_spiro(), run_spiro(), setup_path(), spiro_iter(), spiro_to_otherpath(), test_curve(), and test_integ().