void
plotPartition(struct hit *ihitp, struct hit *ohitp)
{
if (plotfp == NULL)
return;
bu_semaphore_acquire(BU_SEM_SYSCALL);
pl_3line(plotfp,
(int) ihitp->hit_point[X],
(int) ihitp->hit_point[Y],
(int) ihitp->hit_point[Z],
(int) ohitp->hit_point[X],
(int) ohitp->hit_point[Y],
(int) ohitp->hit_point[Z]
);
bu_semaphore_release(BU_SEM_SYSCALL);
return;
}
void
plotRayLine(struct xray *rayp)
{
int endpoint[3];
if (plotfp == NULL)
return;
VJOIN1(endpoint, rayp->r_pt, cellsz, rayp->r_dir);
bu_semaphore_acquire(BU_SEM_SYSCALL);
pl_color(plotfp, R_BURST, G_BURST, B_BURST);
/* draw line */
pl_3line(plotfp,
(int) rayp->r_pt[X],
(int) rayp->r_pt[Y],
(int) rayp->r_pt[Z],
endpoint[X],
endpoint[Y],
endpoint[Z]
);
bu_semaphore_release(BU_SEM_SYSCALL);
return;
}
/**
* P L O T _ O B J E C T
*
* Set up for an object, transformed as indicated, and with an
* object center as specified. The ratio of object to screen size
* is passed in as a convenience.
*
* Returns 0 if object could be drawn, !0 if object was omitted.
*/
HIDDEN int
plot_drawVList(struct dm *dmp, struct bn_vlist *vp)
{
static vect_t last;
struct bn_vlist *tvp;
point_t *pt_prev=NULL;
fastf_t dist_prev=1.0;
fastf_t dist;
fastf_t delta;
int useful = 0;
if (((struct plot_vars *)dmp->dm_vars.priv_vars)->floating) {
rt_vlist_to_uplot(((struct plot_vars *)dmp->dm_vars.priv_vars)->up_fp, &vp->l);
return TCL_OK;
}
/* delta is used in clipping to insure clipped endpoint is
* slightly in front of eye plane (perspective mode only). This
* value is a SWAG that seems to work OK.
*/
delta = plotmat[15]*0.0001;
if (delta < 0.0)
delta = -delta;
if (delta < SQRT_SMALL_FASTF)
delta = SQRT_SMALL_FASTF;
for (BU_LIST_FOR(tvp, bn_vlist, &vp->l)) {
int i;
int nused = tvp->nused;
int *cmd = tvp->cmd;
point_t *pt = tvp->pt;
for (i = 0; i < nused; i++, cmd++, pt++) {
static vect_t start, fin;
switch (*cmd) {
case BN_VLIST_POLY_START:
case BN_VLIST_POLY_VERTNORM:
case BN_VLIST_TRI_START:
case BN_VLIST_TRI_VERTNORM:
continue;
case BN_VLIST_POLY_MOVE:
case BN_VLIST_LINE_MOVE:
case BN_VLIST_TRI_MOVE:
/* Move, not draw */
if (dmp->dm_perspective > 0) {
/* cannot apply perspective transformation to
* points behind eye plane!!!!
*/
dist = VDOT(*pt, &plotmat[12]) + plotmat[15];
if (dist <= 0.0) {
pt_prev = pt;
dist_prev = dist;
continue;
} else {
MAT4X3PNT(last, plotmat, *pt);
dist_prev = dist;
pt_prev = pt;
}
} else
MAT4X3PNT(last, plotmat, *pt);
continue;
case BN_VLIST_POLY_DRAW:
case BN_VLIST_POLY_END:
case BN_VLIST_LINE_DRAW:
case BN_VLIST_TRI_DRAW:
case BN_VLIST_TRI_END:
/* draw */
if (dmp->dm_perspective > 0) {
/* cannot apply perspective transformation to
* points behind eye plane!!!!
*/
dist = VDOT(*pt, &plotmat[12]) + plotmat[15];
if (dist <= 0.0) {
if (dist_prev <= 0.0) {
/* nothing to plot */
dist_prev = dist;
pt_prev = pt;
continue;
} else {
if (pt_prev) {
fastf_t alpha;
vect_t diff;
point_t tmp_pt;
/* clip this end */
VSUB2(diff, *pt, *pt_prev);
alpha = (dist_prev - delta) / (dist_prev - dist);
VJOIN1(tmp_pt, *pt_prev, alpha, diff);
MAT4X3PNT(fin, plotmat, tmp_pt);
}
}
} else {
if (dist_prev <= 0.0) {
if (pt_prev) {
fastf_t alpha;
vect_t diff;
point_t tmp_pt;
/* clip other end */
VSUB2(diff, *pt, *pt_prev);
alpha = (-dist_prev + delta) / (dist - dist_prev);
VJOIN1(tmp_pt, *pt_prev, alpha, diff);
MAT4X3PNT(last, plotmat, tmp_pt);
MAT4X3PNT(fin, plotmat, *pt);
}
} else {
MAT4X3PNT(fin, plotmat, *pt);
}
}
} else
MAT4X3PNT(fin, plotmat, *pt);
VMOVE(start, last);
VMOVE(last, fin);
break;
}
if (vclip(start, fin, dmp->dm_clipmin, dmp->dm_clipmax) == 0)
continue;
if (((struct plot_vars *)dmp->dm_vars.priv_vars)->is_3D)
pl_3line(((struct plot_vars *)dmp->dm_vars.priv_vars)->up_fp,
(int)(start[X] * 2047),
(int)(start[Y] * 2047),
(int)(start[Z] * 2047),
(int)(fin[X] * 2047),
(int)(fin[Y] * 2047),
(int)(fin[Z] * 2047));
else
pl_line(((struct plot_vars *)dmp->dm_vars.priv_vars)->up_fp,
(int)(start[X] * 2047),
(int)(start[Y] * 2047),
(int)(fin[X] * 2047),
(int)(fin[Y] * 2047));
useful = 1;
}
}
if (useful)
return TCL_OK;
return TCL_ERROR;
}
