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 <common/render.h>
#include <common/utils.h>
#include <util/agxbuf.h>
#include <util/alloc.h>
#include <util/list.h>
#include <util/prisize_t.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)

Enumerations
enum	{ debug = 0 }

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)
typedef	LIST (pathpoint)
static void	printArr (vararr_t *arr, FILE *fp)
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 39 of file taper.c.

D2R

#define D2R

(

d

)

(M_PI*(d)/180.0)

Definition at line 45 of file taper.c.

lineto

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

Definition at line 51 of file taper.c.

M_PI

#define M_PI   3.14159265358979323846

Definition at line 43 of file taper.c.

moveto

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

Definition at line 50 of file taper.c.

R2D

#define R2D

(

r

)

(180.0*(r)/M_PI)

Definition at line 46 of file taper.c.

Typedef Documentation

radfunc_t

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

Definition at line 178 of file taper.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
debug

Definition at line 35 of file taper.c.

Function Documentation

addto()

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

static

Definition at line 53 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 166 of file taper.c.

References lineto.

Referenced by taper().

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l2dist()

static double l2dist ( pointf  p0, pointf  p1  )

static

Definition at line 121 of file taper.c.

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

Referenced by pathtolines().

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LIST()

typedef LIST

(

pathpoint

)

Definition at line 101 of file taper.c.

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

myatan()

static double myatan ( double  y, double  x  )

static

Definition at line 67 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 80 of file taper.c.

Referenced by taper().

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pathtolines()

static vararr_t pathtolines ( bezier *  bez )

static

Definition at line 131 of file taper.c.

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

Referenced by taper().

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printArr()

static void printArr ( vararr_t *  arr, FILE *  fp  )

static

Definition at line 111 of file taper.c.

References pathpoint::lengthsofar, LIST_GET, LIST_SIZE, PRISIZE_T, pathpoint::x, and pathpoint::y.

Referenced by pathtolines().

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taper()

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

Definition at line 186 of file taper.c.

References pathpoint::bevel, currentmiterlimit, D2R, pathpoint::dir, pathpoint::dir2, dist(), drawbevel(), free(), pathpoint::lengthsofar, lineto, LIST_DETACH, 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 48 of file taper.c.

Referenced by taper().