taper.c File Reference

#include "config.h"
#include <assert.h>
#include <math.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <types.h>
#include <cgraph/alloc.h>
#include <cgraph/agxbuf.h>
#include <cgraph/list.h>
#include <cgraph/prisize_t.h>
#include <common/render.h>
#include <common/utils.h>

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Data Structures
struct	pathpoint

Macros
#define	BEZIERSUBDIVISION   20
#define	M_PI   3.14159265358979323846
#define	D2R(d)   (M_PI*(d)/180.0)
#define	R2D(r)   (180.0*(r)/M_PI)
#define	moveto(p, x, y)   addto(p,x,y)
#define	lineto(p, x, y)   addto(p,x,y)

Typedefs
typedef double(*	radfunc_t) (double curlen, double totallen, double initwid)

Functions
static void	addto (stroke_t *p, double x, double y)
static double	myatan (double y, double x)
static double	mymod (double original, double modulus)
static void	insertArr (vararr_t *arr, pointf p, double l)
static double	l2dist (pointf p0, pointf p1)
static vararr_t	pathtolines (bezier *bez)
static void	drawbevel (double x, double lineout, bool forward, double dir, double dir2, stroke_t *p)
stroke_t	taper (bezier *bez, radfunc_t radfunc, double initwid)

Variables
static double	currentmiterlimit = 10.0

Macro Definition Documentation

BEZIERSUBDIVISION

#define BEZIERSUBDIVISION   20

Definition at line 33 of file taper.c.

D2R

#define D2R

(

d

)

(M_PI*(d)/180.0)

Definition at line 39 of file taper.c.

lineto

#define lineto	(		p,
			x,
			y
	)		addto(p,x,y)

Definition at line 45 of file taper.c.

M_PI

#define M_PI   3.14159265358979323846

Definition at line 37 of file taper.c.

moveto

#define moveto	(		p,
			x,
			y
	)		addto(p,x,y)

Definition at line 44 of file taper.c.

R2D

#define R2D

(

r

)

(180.0*(r)/M_PI)

Definition at line 40 of file taper.c.

Typedef Documentation

radfunc_t

typedef double(* radfunc_t) (double curlen, double totallen, double initwid)

Definition at line 173 of file taper.c.

Function Documentation

addto()

static void addto ( stroke_t *  p, double  x, double  y  )

static

Definition at line 47 of file taper.c.

References gv_recalloc(), stroke_t::nvertices, stroke_t::vertices, pointf_s::x, and pointf_s::y.

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drawbevel()

static void drawbevel ( double  x, double  lineout, bool  forward, double  dir, double  dir2, stroke_t *  p  )

static

Definition at line 161 of file taper.c.

References lineto.

Referenced by taper().

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insertArr()

static void insertArr ( vararr_t *  arr, pointf  p, double  l  )

static

Definition at line 98 of file taper.c.

References pointf_s::x, pathpoint::x, and pointf_s::y.

Referenced by pathtolines().

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l2dist()

static double l2dist ( pointf  p0, pointf  p1  )

static

Definition at line 116 of file taper.c.

References pointf_s::x, and pointf_s::y.

Referenced by pathtolines().

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myatan()

static double myatan ( double  y, double  x  )

static

Definition at line 61 of file taper.c.

References M_PI.

Referenced by taper().

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mymod()

static double mymod ( double  original, double  modulus  )

static

Definition at line 74 of file taper.c.

Referenced by taper().

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pathtolines()

static vararr_t pathtolines ( bezier *  bez )

static

Definition at line 126 of file taper.c.

References A, Bezier(), BEZIERSUBDIVISION, insertArr(), l2dist(), bezier::list, NULL, bezier::size, and V.

Referenced by taper().

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taper()

stroke_t taper	(	bezier *	bez,
		radfunc_t	radfunc,
		double	initwid
	)

Definition at line 181 of file taper.c.

References pathpoint::bevel, currentmiterlimit, D2R, pathpoint::dir, pathpoint::dir2, dist(), drawbevel(), free(), pathpoint::lengthsofar, lineto, pathpoint::lout, moveto, myatan(), mymod(), pathtolines(), SIZE_MAX, pathpoint::type, pathpoint::x, and pathpoint::y.

Referenced by emit_edge_graphics().

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Variable Documentation

currentmiterlimit

double currentmiterlimit = 10.0

static

Definition at line 42 of file taper.c.

Referenced by taper().