multispline.c File Reference

#include <assert.h>
#include <cgraph/alloc.h>
#include <float.h>
#include <limits.h>
#include <neatogen/multispline.h>
#include <neatogen/delaunay.h>
#include <neatogen/neatoprocs.h>
#include <math.h>
#include <stdbool.h>
#include <stddef.h>
#include <neatogen/fPQ.h>

Include dependency graph for multispline.c:

Go to the source code of this file.

Data Structures
struct	ipair
struct	_tri
struct	tripoly_t
struct	item
struct	Ipair
struct	tnode
struct	tedge
struct	tgraph
struct	router_s
struct	side_t
struct	PPQ

Macros
#define	SEP   15
#define	MARGIN   32
#define	EQPT(p, q)   (((p).x==(q).x)&&((p).y==(q).y))
#define	NSMALL   -0.0000000001
#define	PQTYPE   int
#define	PQVTYPE   float
#define	PQ_TYPES
#define	N_VAL(pq, n)   ((PPQ*)pq)->vals[n]
#define	N_IDX(pq, n)   ((PPQ*)pq)->idxs[n]
#define	PQ_CODE
#define	N_DAD(n)   dad[n]
#define	E_WT(e)   (e->dist)
#define	UNSEEN   (-FLT_MAX)

Typedefs
typedef struct _tri	tri

Functions
static bool	spline_merge (node_t *n)
static bool	swap_ends_p (edge_t *e)
static int	cmpItem (void *item1, void *item2)
static void *	newItem (item *objp, Dtdisc_t *disc)
static void	addMap (Dt_t *map, int a, int b, int t)
static Dt_t *	mapSegToTri (surface_t *sf)
static int	findMap (Dt_t *map, int a, int b)
static int	cmpIpair (void *pair1, void *pair2)
static void *	newIpair (Ipair *objp, Dtdisc_t *disc)
static void	vmapAdd (Dt_t *map, int i, int j)
static int	vMap (Dt_t *map, int i)
static void	mapTri (Dt_t *map, tri *tp)
static tri *	addTri (int i, int j, tri *oldp)
static double	bisect (pointf pp, pointf cp, pointf np)
static int	raySeg (pointf v, pointf w, pointf a, pointf b)
static int	raySegIntersect (pointf v, pointf w, pointf a, pointf b, pointf *p)
static int	triPoint (tripoly_t *trip, int vx, pointf v, pointf w, pointf *ip)
static int	ctrlPtIdx (pointf v, Ppoly_t *polys)
static pointf *	mkCtrlPts (int s, int mult, pointf prev, pointf v, pointf nxt, tripoly_t *trip)
static pointf	triCenter (pointf *pts, int *idxs)
static boxf	bbox (Ppoly_t **obsp, int npoly, int *np)
static int *	mkTriIndices (surface_t *sf)
static ipair	sharedEdge (int *p, int *q)
static void	addTriEdge (tgraph *g, int t, int h, ipair seg)
static void	freeTriGraph (tgraph *tg)
static tgraph *	mkTriGraph (surface_t *sf, pointf *pts)
void	freeRouter (router_t *rtr)
router_t *	mkRouter (Ppoly_t **obsp, int npoly)
static void	finishEdge (edge_t *e, Ppoly_t spl, int flip)
static Ppoint_t	tweakEnd (Ppoly_t poly, size_t s, Ppoint_t q)
static void	tweakPath (Ppoly_t poly, size_t t, Ppolyline_t pl)
static int	genroute (tripoly_t *trip, int t, edge_t *e, int doPolyline)
static int	inCone (pointf a, pointf b, pointf c, pointf q)
static void	addEndpoint (router_t *rtr, pointf p, node_t *v, int v_id, int sides)
static ipair	edgeToSeg (tgraph *tg, int i, int j)
static void	freeTripoly (tripoly_t *trip)
static tripoly_t *	mkPoly (router_t *rtr, int *dad, int s, int t, pointf p_s, pointf p_t, int *sx)
static void	resetGraph (tgraph *g, int ncnt, int ecnt, size_t *original_edge_count)
static int *	triPath (tgraph *g, int n, int v0, int v1, PQ *pq)
int	makeMultiSpline (edge_t *e, router_t *rtr, int doPolyline)

Variables
static splineInfo	sinfo
static Dtdisc_t	itemdisc
static Dtdisc_t	ipairdisc
static pointf	north = {0, 1}
static pointf	northeast = {1, 1}
static pointf	east = {1, 0}
static pointf	southeast = {1, -1}
static pointf	south = {0, -1}
static pointf	southwest = {-1, -1}
static pointf	west = {-1, 0}
static pointf	northwest = {-1, 1}

Macro Definition Documentation

E_WT

#define E_WT

(

e

)

(e->dist)

Definition at line 1143 of file multispline.c.

EQPT

#define EQPT	(		p,
			q
	)		(((p).x==(q).x)&&((p).y==(q).y))

Definition at line 677 of file multispline.c.

MARGIN

#define MARGIN   32

Definition at line 417 of file multispline.c.

N_DAD

#define N_DAD

(

n

)

dad[n]

Definition at line 1142 of file multispline.c.

N_IDX

#define N_IDX	(		pq,
			n
	)		((PPQ*)pq)->idxs[n]

Definition at line 1136 of file multispline.c.

N_VAL

#define N_VAL	(		pq,
			n
	)		((PPQ*)pq)->vals[n]

Definition at line 1135 of file multispline.c.

NSMALL

#define NSMALL   -0.0000000001

Definition at line 838 of file multispline.c.

PQ_CODE

#define PQ_CODE

Definition at line 1138 of file multispline.c.

PQ_TYPES

#define PQ_TYPES

Definition at line 1125 of file multispline.c.

PQTYPE

#define PQTYPE   int

Definition at line 1122 of file multispline.c.

PQVTYPE

#define PQVTYPE   float

Definition at line 1123 of file multispline.c.

SEP

#define SEP   15

Definition at line 303 of file multispline.c.

UNSEEN

#define UNSEEN   (-FLT_MAX)

Definition at line 1144 of file multispline.c.

Typedef Documentation

tri

typedef struct _tri tri

Function Documentation

addEndpoint()

static void addEndpoint ( router_t *  rtr, pointf  p, node_t *  v, int  v_id, int  sides  )

static

Definition at line 865 of file multispline.c.

References add_pointf(), addTriEdge(), BOTTOM, tnode::ctr, east, findMap(), ipair::i, inCone(), ipair::j, LEFT, ND_lim, tnode::ne, tgraph::nodes, north, northeast, northwest, router_s::obs, router_s::ps, raySeg(), RIGHT, south, southeast, southwest, router_s::tg, TOP, router_s::trimap, and west.

Referenced by makeMultiSpline().

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addMap()

static void addMap ( Dt_t *  map, int  a, int  b, int  t  )

static

Definition at line 94 of file multispline.c.

References item::a, dtinsert, and item::t.

Referenced by mapSegToTri().

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addTri()

static tri * addTri ( int  i, int  j, tri *  oldp  )

static

Definition at line 216 of file multispline.c.

References gv_alloc(), ipair::i, ipair::j, _tri::nxttri, and _tri::v.

Referenced by mkPoly().

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addTriEdge()

static void addTriEdge ( tgraph *  g, int  t, int  h, ipair  seg  )

static

Definition at line 503 of file multispline.c.

References tnode::ctr, DIST, tedge::dist, tnode::edges, tgraph::edges, gv_recalloc(), tedge::h, tnode::ne, tgraph::nedges, tgraph::nodes, tedge::seg, and tedge::t.

Referenced by addEndpoint(), and mkTriGraph().

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bbox()

static boxf bbox ( Ppoly_t **  obsp, int  npoly, int *  np  )

static

Definition at line 424 of file multispline.c.

References cnt(), boxf::LL, MARGIN, Ppoly_t::pn, Ppoly_t::ps, boxf::UR, pointf_s::x, and pointf_s::y.

Referenced by emitGraph(), get_boundingbox(), make_map_from_rectangle_groups(), mkRouter(), poly_inside(), record_inside(), and star_inside().

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bisect()

static double bisect ( pointf  pp, pointf  cp, pointf  np  )

static

Definition at line 228 of file multispline.c.

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

Referenced by mkCtrlPts().

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cmpIpair()

static int cmpIpair ( void *  pair1, void *  pair2  )

static

Definition at line 156 of file multispline.c.

cmpItem()

static int cmpItem ( void *  item1, void *  item2  )

static

Definition at line 62 of file multispline.c.

ctrlPtIdx()

static int ctrlPtIdx ( pointf  v, Ppoly_t *  polys  )

static

Definition at line 290 of file multispline.c.

References Ppoly_t::pn, Ppoly_t::ps, pointf_s::x, and pointf_s::y.

Referenced by mkCtrlPts().

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edgeToSeg()

static ipair edgeToSeg ( tgraph *  tg, int  i, int  j  )

static

Definition at line 947 of file multispline.c.

References tnode::edges, tgraph::edges, tedge::h, tnode::ne, tgraph::nodes, tedge::seg, and tedge::t.

Referenced by mkPoly().

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findMap()

static int findMap ( Dt_t *  map, int  a, int  b  )

static

Definition at line 130 of file multispline.c.

References item::a, dtsearch, and item::t.

Referenced by addEndpoint().

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finishEdge()

static void finishEdge ( edge_t *  e, Ppoly_t  spl, int  flip  )

static

Definition at line 662 of file multispline.c.

References addEdgeLabels(), aghead, agnameof(), agtail, clip_and_install(), Ppoly_t::pn, Ppoly_t::ps, sinfo, and Verbose.

Referenced by genroute().

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freeRouter()

void freeRouter

(

router_t *

rtr

)

Definition at line 577 of file multispline.c.

References dtclose(), free(), freeTriGraph(), router_s::obs, router_s::ps, router_s::tg, router_s::trimap, and router_s::tris.

Referenced by _spline_edges().

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freeTriGraph()

static void freeTriGraph ( tgraph *  tg )

static

Definition at line 525 of file multispline.c.

References tnode::edges, tgraph::edges, free(), tgraph::nnodes, and tgraph::nodes.

Referenced by freeRouter().

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freeTripoly()

static void freeTripoly ( tripoly_t *  trip )

static

Definition at line 964 of file multispline.c.

References free(), _tri::nxttri, Ppoly_t::pn, tripoly_t::poly, Ppoly_t::ps, and tripoly_t::triMap.

Referenced by makeMultiSpline().

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genroute()

static int genroute ( tripoly_t *  trip, int  t, edge_t *  e, int  doPolyline  )

static

Definition at line 724 of file multispline.c.

References Pedge_t::a, aghead, agnameof(), agraphof(), agtail, agwarningf(), Pedge_t::b, Concentrate, ED_count, ED_to_virt, finishEdge(), free(), gv_calloc(), head, make_polyline(), makeStraightEdge(), mkCtrlPts(), NULL, Ppoly_t::pn, tripoly_t::poly, Proutespline(), Ppoly_t::ps, Pshortestpath(), sinfo, tweakPath(), pointf_s::x, Pxy_t::x, pointf_s::y, and Pxy_t::y.

Referenced by makeMultiSpline().

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inCone()

static int inCone ( pointf  a, pointf  b, pointf  c, pointf  q  )

static

Definition at line 844 of file multispline.c.

References area2(), and NSMALL.

Referenced by addEndpoint().

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makeMultiSpline()

int makeMultiSpline	(	edge_t *	e,
		router_t *	rtr,
		int	doPolyline
	)

Definition at line 1205 of file multispline.c.

References addEndpoint(), aghead, agtail, ED_head_port, ED_path, ED_tail_port, free(), freeTripoly(), genroute(), gv_calloc(), mkPoly(), tnode::ne, tgraph::nedges, tgraph::nnodes, tgraph::nodes, Ppoly_t::pn, pq, PQfree(), PQgen(), PQTYPE, PQVTYPE, Ppoly_t::ps, resetGraph(), router_s::tg, router_s::tn, and triPath().

Referenced by _spline_edges().

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mapSegToTri()

static Dt_t * mapSegToTri ( surface_t *  sf )

static

Definition at line 114 of file multispline.c.

References addMap(), dtopen(), Dtoset, surface_t::faces, itemdisc, surface_t::nfaces, and ps.

Referenced by mkRouter().

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mapTri()

static void mapTri ( Dt_t *  map, tri *  tp  )

static

Definition at line 205 of file multispline.c.

References ipair::i, ipair::j, _tri::nxttri, _tri::v, and vMap().

Referenced by mkPoly().

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mkCtrlPts()

static pointf * mkCtrlPts ( int  s, int  mult, pointf  prev, pointf  v, pointf  nxt, tripoly_t *  trip  )

static

Definition at line 315 of file multispline.c.

References bisect(), ctrlPtIdx(), DIST, gv_calloc(), NULL, tripoly_t::poly, prev, ps, SEP, triPoint(), wind(), pointf_s::x, and pointf_s::y.

Referenced by genroute().

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mkPoly()

static tripoly_t * mkPoly ( router_t *  rtr, int *  dad, int  s, int  t, pointf  p_s, pointf  p_t, int *  sx  )

static

Definition at line 998 of file multispline.c.

References addTri(), dtclose(), dtopen(), Dtoset, edgeToSeg(), free(), gv_alloc(), gv_calloc(), ipair::i, ipairdisc, ipair::j, mapTri(), NULL, ps, router_s::ps, router_s::tg, side_t::ts, side_t::v, and vmapAdd().

Referenced by makeMultiSpline().

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mkRouter()

router_t * mkRouter	(	Ppoly_t **	obsp,
		int	npoly
	)

Definition at line 587 of file multispline.c.

References bbox(), free(), freeSurface(), gv_alloc(), gv_calloc(), boxf::LL, mapSegToTri(), mkSurface(), mkTriGraph(), mkTriIndices(), surface_t::nfaces, router_s::obs, router_s::pn, Ppoly_t::pn, router_s::ps, Ppoly_t::ps, router_s::tg, router_s::tn, router_s::trimap, router_s::tris, boxf::UR, pointf_s::x, and pointf_s::y.

Referenced by _spline_edges().

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mkTriGraph()

static tgraph * mkTriGraph ( surface_t *  sf, pointf *  pts  )

static

Definition at line 539 of file multispline.c.

References addTriEdge(), tnode::ctr, surface_t::faces, gv_alloc(), gv_calloc(), surface_t::neigh, surface_t::nfaces, tgraph::nnodes, tgraph::nodes, sharedEdge(), and triCenter().

Referenced by mkRouter().

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mkTriIndices()

static int * mkTriIndices ( surface_t *  sf )

static

Definition at line 456 of file multispline.c.

References surface_t::faces, gv_calloc(), surface_t::nfaces, and tris.

Referenced by mkRouter().

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newIpair()

static void * newIpair ( Ipair *  objp, Dtdisc_t *  disc  )

static

Definition at line 168 of file multispline.c.

References gv_alloc(), Ipair::i, and Ipair::j.

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newItem()

static void * newItem ( item *  objp, Dtdisc_t *  disc  )

static

Definition at line 74 of file multispline.c.

References item::a, gv_alloc(), and item::t.

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raySeg()

static int raySeg ( pointf  v, pointf  w, pointf  a, pointf  b  )

static

Definition at line 239 of file multispline.c.

References wind().

Referenced by addEndpoint(), and raySegIntersect().

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raySegIntersect()

static int raySegIntersect ( pointf  v, pointf  w, pointf  a, pointf  b, pointf *  p  )

static

Definition at line 257 of file multispline.c.

References line_intersect(), and raySeg().

Referenced by triPoint().

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resetGraph()

static void resetGraph ( tgraph *  g, int  ncnt, int  ecnt, size_t *  original_edge_count  )

static

Definition at line 1111 of file multispline.c.

References tnode::ne, tgraph::nedges, and tgraph::nodes.

Referenced by makeMultiSpline().

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sharedEdge()

static ipair sharedEdge ( int *  p, int *  q  )

static

Definition at line 467 of file multispline.c.

References ipair::i, and ipair::j.

Referenced by mkTriGraph().

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spline_merge()

static bool spline_merge ( node_t *  n )

static

Definition at line 22 of file multispline.c.

swap_ends_p()

static bool swap_ends_p ( edge_t *  e )

static

Definition at line 28 of file multispline.c.

triCenter()

static pointf triCenter ( pointf *  pts, int *  idxs  )

static

Definition at line 406 of file multispline.c.

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

Referenced by mkTriGraph().

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triPath()

static int * triPath ( tgraph *  g, int  n, int  v0, int  v1, PQ *  pq  )

static

Definition at line 1153 of file multispline.c.

References E_WT, tnode::edges, tgraph::edges, free(), gv_calloc(), tedge::h, N_DAD, N_VAL, tnode::ne, tgraph::nodes, NULL, pq, PQinit(), PQinsert(), PQremove(), PQupdate(), tedge::t, and UNSEEN.

Referenced by makeMultiSpline().

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triPoint()

static int triPoint ( tripoly_t *  trip, int  vx, pointf  v, pointf  w, pointf *  ip  )

static

Definition at line 273 of file multispline.c.

References ipair::i, ipair::j, _tri::nxttri, tripoly_t::poly, Ppoly_t::ps, raySegIntersect(), tripoly_t::triMap, and _tri::v.

Referenced by mkCtrlPts().

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tweakEnd()

static Ppoint_t tweakEnd ( Ppoly_t  poly, size_t  s, Ppoint_t  q  )

static

Definition at line 693 of file multispline.c.

References EQPT, Pxy_t::x, and Pxy_t::y.

Referenced by tweakPath().

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tweakPath()

static void tweakPath ( Ppoly_t  poly, size_t  t, Ppolyline_t  pl  )

static

Definition at line 713 of file multispline.c.

References Ppoly_t::pn, Ppoly_t::ps, and tweakEnd().

Referenced by genroute().

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vMap()

static int vMap ( Dt_t *  map, int  i  )

static

Definition at line 195 of file multispline.c.

References dtmatch, and Ipair::j.

Referenced by mapTri().

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vmapAdd()

static void vmapAdd ( Dt_t *  map, int  i, int  j  )

static

Definition at line 187 of file multispline.c.

References dtinsert, Ipair::i, and Ipair::j.

Referenced by mkPoly().

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Variable Documentation

east

pointf east = {1, 0}

static

Definition at line 851 of file multispline.c.

Referenced by addEndpoint().

ipairdisc

Dtdisc_t ipairdisc

static

Initial value:

= {
    .key = offsetof(Ipair, i),
    .size = sizeof(int),
    .link = offsetof(Ipair, link),
    .makef = (Dtmake_f)newIpair,
    .freef = free,
    .comparf = cmpIpair,
}

Definition at line 178 of file multispline.c.

Referenced by mkPoly().

itemdisc

Dtdisc_t itemdisc

static

Initial value:

= {
    .key = offsetof(item, a),
    .size = 2 * sizeof(int),
    .link = offsetof(item, link),
    .makef = (Dtmake_f)newItem,
    .freef = free,
    .comparf = cmpItem,
}

Definition at line 85 of file multispline.c.

Referenced by mapSegToTri().

north

pointf north = {0, 1}

static

Definition at line 849 of file multispline.c.

Referenced by addEndpoint().

northeast

pointf northeast = {1, 1}

static

Definition at line 850 of file multispline.c.

Referenced by addEndpoint().

northwest

pointf northwest = {-1, 1}

static

Definition at line 856 of file multispline.c.

Referenced by addEndpoint().

sinfo

splineInfo sinfo

static

Initial value:

= {.swapEnds = swap_ends_p,
                           .splineMerge = spline_merge}

Definition at line 34 of file multispline.c.

Referenced by finishEdge(), and genroute().

south

pointf south = {0, -1}

static

Definition at line 853 of file multispline.c.

Referenced by addEndpoint().

southeast

pointf southeast = {1, -1}

static

Definition at line 852 of file multispline.c.

Referenced by addEndpoint().

southwest

pointf southwest = {-1, -1}

static

Definition at line 854 of file multispline.c.

Referenced by addEndpoint().

west

pointf west = {-1, 0}

static

Definition at line 855 of file multispline.c.

Referenced by addEndpoint().