g_half.c File Reference

#include "common.h"
#include <stddef.h>
#include <stdio.h>
#include <math.h>
#include "machine.h"
#include "vmath.h"
#include "raytrace.h"
#include "nmg.h"
#include "db.h"
#include "rtgeom.h"
#include "./debug.h"
#include "noalias.h"

Include dependency graph for g_half.c:

Go to the source code of this file.

Data Structures
struct	half_specific
Defines
#define	HALF_NULL   ((struct half_specific *)0)
#define	RT_HALF_SEG_MISS(SEG)   (SEG).seg_stp=RT_SOLTAB_NULL
Functions
int	rt_hlf_prep (struct soltab *stp, struct rt_db_internal *ip, struct rt_i *rtip)
void	rt_hlf_print (register const struct soltab *stp)
int	rt_hlf_shot (struct soltab *stp, register struct xray *rp, struct application *ap, struct seg *seghead)
void	rt_hlf_vshot (struct soltab **stp, struct xray **rp, struct seg *segp, int n, struct application *ap)
void	rt_hlf_norm (register struct hit *hitp, struct soltab *stp, register struct xray *rp)
void	rt_hlf_curve (register struct curvature *cvp, register struct hit *hitp, struct soltab *stp)
void	rt_hlf_uv (struct application *ap, struct soltab *stp, register struct hit *hitp, register struct uvcoord *uvp)
void	rt_hlf_free (struct soltab *stp)
int	rt_hlf_class (register const struct soltab *stp, const fastf_t *min, const fastf_t *max, const struct bn_tol *tol)
int	rt_hlf_plot (struct bu_list *vhead, struct rt_db_internal *ip, const struct rt_tess_tol *ttol, const struct bn_tol *tol)
int	rt_hlf_xform (struct rt_db_internal *op, const mat_t mat, struct rt_db_internal *ip, int free, struct db_i *dbip, struct resource *resp)
int	rt_hlf_import (struct rt_db_internal *ip, const struct bu_external *ep, const fastf_t *mat, const struct db_i *dbip)
int	rt_hlf_export (struct bu_external *ep, const struct rt_db_internal *ip, double local2mm, const struct db_i *dbip)
int	rt_hlf_import5 (struct rt_db_internal *ip, const struct bu_external *ep, register const fastf_t *mat, const struct db_i *dbip)
int	rt_hlf_export5 (struct bu_external *ep, const struct rt_db_internal *ip, double local2mm, const struct db_i *dbip)
int	rt_hlf_describe (struct bu_vls *str, const struct rt_db_internal *ip, int verbose, double mm2local)
void	rt_hlf_ifree (struct rt_db_internal *ip)
int	rt_hlf_tess (struct nmgregion **r, struct model *m, struct rt_db_internal *ip, const struct rt_tess_tol *ttol, const struct bn_tol *tol)
Variables
const struct bu_structparse	rt_hlf_parse []

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Detailed Description

Intersect a ray with a Halfspace.

A HALFSPACE is defined by an outward pointing normal vector, and the distance from the origin to the plane, which is defined by N and d.

With outward pointing normal vectors, the ray enters the half-space defined by a plane when D dot N < 0, is parallel to the plane when D dot N = 0, and exits otherwise.

The inside of the halfspace bounded by the plane consists of all points P such that VDOT(P,N) - N[3] <= 0,

where N[3] stores the value d. See the remarks in h/vmath.h for more details.

Authors - Michael John Muuss Dave Becker (Vectorization)

Source - SECAD/VLD Computing Consortium, Bldg 394 The U. S. Army Ballistic Research Laboratory Aberdeen Proving Ground, Maryland 21005

Definition in file g_half.c.

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