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#ifndef lint
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static const char RCSid[] = "$Id: image.c,v 2.37 2012/10/27 03:01:21 greg Exp $";
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#endif
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/*
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* image.c - routines for image generation.
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*
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* External symbols declared in view.h
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*/
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#include "copyright.h"
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#include <ctype.h>
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#include "rtio.h"
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#include "rtmath.h"
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#include "paths.h"
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#include "view.h"
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#define FEQ(x,y) (fabs((x)-(y)) <= FTINY)
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#define VEQ(v,w) (FEQ((v)[0],(w)[0]) && FEQ((v)[1],(w)[1]) \
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&& FEQ((v)[2],(w)[2]))
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VIEW stdview = STDVIEW; /* default view parameters */
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static gethfunc gethview;
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char *
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setview( /* set hvec and vvec, return message on error */
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VIEW *v
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)
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{
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static char ill_horiz[] = "illegal horizontal view size";
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static char ill_vert[] = "illegal vertical view size";
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if (v->vaft < -FTINY || (v->vaft > FTINY && v->vaft <= v->vfore))
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return("illegal fore/aft clipping plane");
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if (v->vdist <= FTINY)
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return("illegal view distance");
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v->vdist *= normalize(v->vdir); /* normalize direction */
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if (v->vdist == 0.0)
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return("zero view direction");
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if (normalize(v->vup) == 0.0) /* normalize view up */
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return("zero view up vector");
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fcross(v->hvec, v->vdir, v->vup); /* compute horiz dir */
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if (normalize(v->hvec) == 0.0)
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return("view up parallel to view direction");
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fcross(v->vvec, v->hvec, v->vdir); /* compute vert dir */
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if (v->horiz <= FTINY)
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return(ill_horiz);
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if (v->vert <= FTINY)
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return(ill_vert);
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switch (v->type) {
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case VT_PAR: /* parallel view */
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v->hn2 = v->horiz;
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v->vn2 = v->vert;
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break;
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case VT_PER: /* perspective view */
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if (v->horiz >= 180.0-FTINY)
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return(ill_horiz);
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if (v->vert >= 180.0-FTINY)
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return(ill_vert);
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v->hn2 = 2.0 * tan(v->horiz*(PI/180.0/2.0));
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v->vn2 = 2.0 * tan(v->vert*(PI/180.0/2.0));
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break;
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case VT_CYL: /* cylindrical panorama */
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if (v->horiz > 360.0+FTINY)
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return(ill_horiz);
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if (v->vert >= 180.0-FTINY)
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return(ill_vert);
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v->hn2 = v->horiz * (PI/180.0);
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v->vn2 = 2.0 * tan(v->vert*(PI/180.0/2.0));
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break;
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case VT_ANG: /* angular fisheye */
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if (v->horiz > 360.0+FTINY)
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return(ill_horiz);
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if (v->vert > 360.0+FTINY)
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return(ill_vert);
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v->hn2 = v->horiz * (PI/180.0);
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v->vn2 = v->vert * (PI/180.0);
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break;
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case VT_HEM: /* hemispherical fisheye */
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if (v->horiz > 180.0+FTINY)
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return(ill_horiz);
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if (v->vert > 180.0+FTINY)
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return(ill_vert);
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v->hn2 = 2.0 * sin(v->horiz*(PI/180.0/2.0));
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v->vn2 = 2.0 * sin(v->vert*(PI/180.0/2.0));
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break;
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case VT_PLS: /* planispheric fisheye */
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if (v->horiz >= 360.0-FTINY)
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return(ill_horiz);
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if (v->vert >= 360.0-FTINY)
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return(ill_vert);
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v->hn2 = 2.*sin(v->horiz*(PI/180.0/2.0)) /
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(1.0 + cos(v->horiz*(PI/180.0/2.0)));
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v->vn2 = 2.*sin(v->vert*(PI/180.0/2.0)) /
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(1.0 + cos(v->vert*(PI/180.0/2.0)));
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break;
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default:
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return("unknown view type");
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}
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if (v->type != VT_ANG && v->type != VT_PLS) {
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if (v->type != VT_CYL) {
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v->hvec[0] *= v->hn2;
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v->hvec[1] *= v->hn2;
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v->hvec[2] *= v->hn2;
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}
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v->vvec[0] *= v->vn2;
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v->vvec[1] *= v->vn2;
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v->vvec[2] *= v->vn2;
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}
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v->hn2 *= v->hn2;
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v->vn2 *= v->vn2;
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return(NULL);
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}
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void
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normaspect( /* fix pixel aspect or resolution */
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double va, /* view aspect ratio */
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double *ap, /* pixel aspect in (or out if 0) */
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int *xp,
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int *yp /* x and y resolution in (or out if *ap!=0) */
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)
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{
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if (*ap <= FTINY)
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*ap = va * *xp / *yp; /* compute pixel aspect */
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else if (va * *xp > *ap * *yp)
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*xp = *yp / va * *ap + .5; /* reduce x resolution */
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else
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*yp = *xp * va / *ap + .5; /* reduce y resolution */
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}
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double
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viewray( /* compute ray origin and direction */
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FVECT orig,
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FVECT direc,
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VIEW *v,
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double x,
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double y
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)
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{
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double d, z;
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x += v->hoff - 0.5;
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y += v->voff - 0.5;
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switch(v->type) {
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case VT_PAR: /* parallel view */
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orig[0] = v->vp[0] + v->vfore*v->vdir[0]
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+ x*v->hvec[0] + y*v->vvec[0];
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orig[1] = v->vp[1] + v->vfore*v->vdir[1]
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+ x*v->hvec[1] + y*v->vvec[1];
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orig[2] = v->vp[2] + v->vfore*v->vdir[2]
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+ x*v->hvec[2] + y*v->vvec[2];
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VCOPY(direc, v->vdir);
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return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0);
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case VT_PER: /* perspective view */
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direc[0] = v->vdir[0] + x*v->hvec[0] + y*v->vvec[0];
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direc[1] = v->vdir[1] + x*v->hvec[1] + y*v->vvec[1];
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direc[2] = v->vdir[2] + x*v->hvec[2] + y*v->vvec[2];
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orig[0] = v->vp[0] + v->vfore*direc[0];
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orig[1] = v->vp[1] + v->vfore*direc[1];
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orig[2] = v->vp[2] + v->vfore*direc[2];
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d = normalize(direc);
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return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0);
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case VT_HEM: /* hemispherical fisheye */
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z = 1.0 - x*x*v->hn2 - y*y*v->vn2;
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if (z < 0.0)
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return(-1.0);
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z = sqrt(z);
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0];
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1];
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2];
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orig[0] = v->vp[0] + v->vfore*direc[0];
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orig[1] = v->vp[1] + v->vfore*direc[1];
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orig[2] = v->vp[2] + v->vfore*direc[2];
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return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0);
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case VT_CYL: /* cylindrical panorama */
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d = x * v->horiz * (PI/180.0);
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z = cos(d);
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x = sin(d);
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0];
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1];
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2];
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orig[0] = v->vp[0] + v->vfore*direc[0];
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orig[1] = v->vp[1] + v->vfore*direc[1];
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orig[2] = v->vp[2] + v->vfore*direc[2];
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d = normalize(direc);
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return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0);
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case VT_ANG: /* angular fisheye */
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x *= (1.0/180.0)*v->horiz;
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y *= (1.0/180.0)*v->vert;
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d = x*x + y*y;
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if (d > 1.0)
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return(-1.0);
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d = sqrt(d);
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z = cos(PI*d);
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d = d <= FTINY ? PI : sqrt(1.0 - z*z)/d;
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x *= d;
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y *= d;
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0];
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1];
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2];
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orig[0] = v->vp[0] + v->vfore*direc[0];
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orig[1] = v->vp[1] + v->vfore*direc[1];
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orig[2] = v->vp[2] + v->vfore*direc[2];
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return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0);
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case VT_PLS: /* planispheric fisheye */
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x *= sqrt(v->hn2);
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y *= sqrt(v->vn2);
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d = x*x + y*y;
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z = (1. - d)/(1. + d);
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x *= (1. + z);
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y *= (1. + z);
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0];
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1];
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2];
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orig[0] = v->vp[0] + v->vfore*direc[0];
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orig[1] = v->vp[1] + v->vfore*direc[1];
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orig[2] = v->vp[2] + v->vfore*direc[2];
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return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0);
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}
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return(-1.0);
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}
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void
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viewloc( /* find image location for point */
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FVECT ip,
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VIEW *v,
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FVECT p
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)
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{
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double d, d2;
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FVECT disp;
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VSUB(disp, p, v->vp);
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switch (v->type) {
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case VT_PAR: /* parallel view */
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ip[2] = DOT(disp,v->vdir) - v->vfore;
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break;
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case VT_PER: /* perspective view */
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d = DOT(disp,v->vdir);
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ip[2] = VLEN(disp);
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if (d < 0.0) { /* fold pyramid */
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ip[2] = -ip[2];
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d = -d;
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}
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if (d > FTINY) {
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d = 1.0/d;
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disp[0] *= d;
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disp[1] *= d;
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disp[2] *= d;
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}
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ip[2] *= (1.0 - v->vfore*d);
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break;
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case VT_HEM: /* hemispherical fisheye */
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d = normalize(disp);
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if (DOT(disp,v->vdir) < 0.0)
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ip[2] = -d;
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else
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ip[2] = d;
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ip[2] -= v->vfore;
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break;
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case VT_CYL: /* cylindrical panorama */
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d = DOT(disp,v->hvec);
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d2 = DOT(disp,v->vdir);
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ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff;
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d = 1.0/sqrt(d*d + d2*d2);
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ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff;
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ip[2] = VLEN(disp);
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ip[2] *= (1.0 - v->vfore*d);
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return;
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case VT_ANG: /* angular fisheye */
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ip[0] = 0.5 - v->hoff;
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ip[1] = 0.5 - v->voff;
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ip[2] = normalize(disp) - v->vfore;
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d = DOT(disp,v->vdir);
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if (d >= 1.0-FTINY)
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return;
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if (d <= -(1.0-FTINY)) {
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ip[0] += 180.0/v->horiz;
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return;
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}
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d = (180.0/PI)*acos(d) / sqrt(1.0 - d*d);
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ip[0] += DOT(disp,v->hvec)*d/v->horiz;
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ip[1] += DOT(disp,v->vvec)*d/v->vert;
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return;
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case VT_PLS: /* planispheric fisheye */
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ip[0] = 0.5 - v->hoff;
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ip[1] = 0.5 - v->voff;
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ip[2] = normalize(disp) - v->vfore;
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| 305 |
d = DOT(disp,v->vdir);
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| 306 |
if (d >= 1.0-FTINY)
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| 307 |
return;
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| 308 |
if (d <= -(1.0-FTINY))
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| 309 |
return; /* really an error */
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| 310 |
ip[0] += DOT(disp,v->hvec)/((1. + d)*sqrt(v->hn2));
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| 311 |
ip[1] += DOT(disp,v->vvec)/((1. + d)*sqrt(v->vn2));
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| 312 |
return;
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| 313 |
}
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| 314 |
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff;
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| 315 |
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff;
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| 316 |
}
|
| 317 |
|
| 318 |
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| 319 |
void
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| 320 |
pix2loc( /* compute image location from pixel pos. */
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| 321 |
RREAL loc[2],
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| 322 |
RESOLU *rp,
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| 323 |
int px,
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| 324 |
int py
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| 325 |
)
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| 326 |
{
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| 327 |
int x, y;
|
| 328 |
|
| 329 |
if (rp->rt & YMAJOR) {
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| 330 |
x = px;
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| 331 |
y = py;
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| 332 |
} else {
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| 333 |
x = py;
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| 334 |
y = px;
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| 335 |
}
|
| 336 |
if (rp->rt & XDECR)
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| 337 |
x = rp->xr-1 - x;
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| 338 |
if (rp->rt & YDECR)
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| 339 |
y = rp->yr-1 - y;
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| 340 |
loc[0] = (x+.5)/rp->xr;
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| 341 |
loc[1] = (y+.5)/rp->yr;
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| 342 |
}
|
| 343 |
|
| 344 |
|
| 345 |
void
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| 346 |
loc2pix( /* compute pixel pos. from image location */
|
| 347 |
int pp[2],
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| 348 |
RESOLU *rp,
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| 349 |
double lx,
|
| 350 |
double ly
|
| 351 |
)
|
| 352 |
{
|
| 353 |
int x, y;
|
| 354 |
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| 355 |
x = (int)(lx*rp->xr + .5 - (lx < 0.0));
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| 356 |
y = (int)(ly*rp->yr + .5 - (ly < 0.0));
|
| 357 |
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| 358 |
if (rp->rt & XDECR)
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| 359 |
x = rp->xr-1 - x;
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| 360 |
if (rp->rt & YDECR)
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| 361 |
y = rp->yr-1 - y;
|
| 362 |
if (rp->rt & YMAJOR) {
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| 363 |
pp[0] = x;
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| 364 |
pp[1] = y;
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| 365 |
} else {
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| 366 |
pp[0] = y;
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| 367 |
pp[1] = x;
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| 368 |
}
|
| 369 |
}
|
| 370 |
|
| 371 |
|
| 372 |
int
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| 373 |
getviewopt( /* process view argument */
|
| 374 |
VIEW *v,
|
| 375 |
int ac,
|
| 376 |
char *av[]
|
| 377 |
)
|
| 378 |
{
|
| 379 |
#define check(c,l) if ((av[0][c]&&av[0][c]!=' ') || \
|
| 380 |
badarg(ac-1,av+1,l)) return(-1)
|
| 381 |
|
| 382 |
if (ac <= 0 || av[0][0] != '-' || av[0][1] != 'v')
|
| 383 |
return(-1);
|
| 384 |
switch (av[0][2]) {
|
| 385 |
case 't': /* type */
|
| 386 |
if (!av[0][3] || av[0][3]==' ')
|
| 387 |
return(-1);
|
| 388 |
check(4,"");
|
| 389 |
v->type = av[0][3];
|
| 390 |
return(0);
|
| 391 |
case 'p': /* point */
|
| 392 |
check(3,"fff");
|
| 393 |
v->vp[0] = atof(av[1]);
|
| 394 |
v->vp[1] = atof(av[2]);
|
| 395 |
v->vp[2] = atof(av[3]);
|
| 396 |
return(3);
|
| 397 |
case 'd': /* direction */
|
| 398 |
check(3,"fff");
|
| 399 |
v->vdir[0] = atof(av[1]);
|
| 400 |
v->vdir[1] = atof(av[2]);
|
| 401 |
v->vdir[2] = atof(av[3]);
|
| 402 |
v->vdist = 1.;
|
| 403 |
return(3);
|
| 404 |
case 'u': /* up */
|
| 405 |
check(3,"fff");
|
| 406 |
v->vup[0] = atof(av[1]);
|
| 407 |
v->vup[1] = atof(av[2]);
|
| 408 |
v->vup[2] = atof(av[3]);
|
| 409 |
return(3);
|
| 410 |
case 'h': /* horizontal size */
|
| 411 |
check(3,"f");
|
| 412 |
v->horiz = atof(av[1]);
|
| 413 |
return(1);
|
| 414 |
case 'v': /* vertical size */
|
| 415 |
check(3,"f");
|
| 416 |
v->vert = atof(av[1]);
|
| 417 |
return(1);
|
| 418 |
case 'o': /* fore clipping plane */
|
| 419 |
check(3,"f");
|
| 420 |
v->vfore = atof(av[1]);
|
| 421 |
return(1);
|
| 422 |
case 'a': /* aft clipping plane */
|
| 423 |
check(3,"f");
|
| 424 |
v->vaft = atof(av[1]);
|
| 425 |
return(1);
|
| 426 |
case 's': /* shift */
|
| 427 |
check(3,"f");
|
| 428 |
v->hoff = atof(av[1]);
|
| 429 |
return(1);
|
| 430 |
case 'l': /* lift */
|
| 431 |
check(3,"f");
|
| 432 |
v->voff = atof(av[1]);
|
| 433 |
return(1);
|
| 434 |
default:
|
| 435 |
return(-1);
|
| 436 |
}
|
| 437 |
#undef check
|
| 438 |
}
|
| 439 |
|
| 440 |
|
| 441 |
int
|
| 442 |
sscanview( /* get view parameters from string */
|
| 443 |
VIEW *vp,
|
| 444 |
char *s
|
| 445 |
)
|
| 446 |
{
|
| 447 |
int ac;
|
| 448 |
char *av[4];
|
| 449 |
int na;
|
| 450 |
int nvopts = 0;
|
| 451 |
|
| 452 |
while (isspace(*s))
|
| 453 |
if (!*s++)
|
| 454 |
return(0);
|
| 455 |
while (*s) {
|
| 456 |
ac = 0;
|
| 457 |
do {
|
| 458 |
if (ac || *s == '-')
|
| 459 |
av[ac++] = s;
|
| 460 |
while (*s && !isspace(*s))
|
| 461 |
s++;
|
| 462 |
while (isspace(*s))
|
| 463 |
s++;
|
| 464 |
} while (*s && ac < 4);
|
| 465 |
if ((na = getviewopt(vp, ac, av)) >= 0) {
|
| 466 |
if (na+1 < ac)
|
| 467 |
s = av[na+1];
|
| 468 |
nvopts++;
|
| 469 |
} else if (ac > 1)
|
| 470 |
s = av[1];
|
| 471 |
}
|
| 472 |
return(nvopts);
|
| 473 |
}
|
| 474 |
|
| 475 |
|
| 476 |
void
|
| 477 |
fprintview( /* write out view parameters */
|
| 478 |
VIEW *vp,
|
| 479 |
FILE *fp
|
| 480 |
)
|
| 481 |
{
|
| 482 |
fprintf(fp, " -vt%c", vp->type);
|
| 483 |
fprintf(fp, " -vp %.6g %.6g %.6g", vp->vp[0], vp->vp[1], vp->vp[2]);
|
| 484 |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0]*vp->vdist,
|
| 485 |
vp->vdir[1]*vp->vdist,
|
| 486 |
vp->vdir[2]*vp->vdist);
|
| 487 |
fprintf(fp, " -vu %.6g %.6g %.6g", vp->vup[0], vp->vup[1], vp->vup[2]);
|
| 488 |
fprintf(fp, " -vh %.6g -vv %.6g", vp->horiz, vp->vert);
|
| 489 |
fprintf(fp, " -vo %.6g -va %.6g", vp->vfore, vp->vaft);
|
| 490 |
fprintf(fp, " -vs %.6g -vl %.6g", vp->hoff, vp->voff);
|
| 491 |
}
|
| 492 |
|
| 493 |
|
| 494 |
char *
|
| 495 |
viewopt( /* translate to minimal view string */
|
| 496 |
VIEW *vp
|
| 497 |
)
|
| 498 |
{
|
| 499 |
static char vwstr[128];
|
| 500 |
char *cp = vwstr;
|
| 501 |
|
| 502 |
*cp = '\0';
|
| 503 |
if (vp->type != stdview.type) {
|
| 504 |
sprintf(cp, " -vt%c", vp->type);
|
| 505 |
cp += strlen(cp);
|
| 506 |
}
|
| 507 |
if (!VEQ(vp->vp,stdview.vp)) {
|
| 508 |
sprintf(cp, " -vp %.6g %.6g %.6g",
|
| 509 |
vp->vp[0], vp->vp[1], vp->vp[2]);
|
| 510 |
cp += strlen(cp);
|
| 511 |
}
|
| 512 |
if (!FEQ(vp->vdist,stdview.vdist) || !VEQ(vp->vdir,stdview.vdir)) {
|
| 513 |
sprintf(cp, " -vd %.6g %.6g %.6g",
|
| 514 |
vp->vdir[0]*vp->vdist,
|
| 515 |
vp->vdir[1]*vp->vdist,
|
| 516 |
vp->vdir[2]*vp->vdist);
|
| 517 |
cp += strlen(cp);
|
| 518 |
}
|
| 519 |
if (!VEQ(vp->vup,stdview.vup)) {
|
| 520 |
sprintf(cp, " -vu %.6g %.6g %.6g",
|
| 521 |
vp->vup[0], vp->vup[1], vp->vup[2]);
|
| 522 |
cp += strlen(cp);
|
| 523 |
}
|
| 524 |
if (!FEQ(vp->horiz,stdview.horiz)) {
|
| 525 |
sprintf(cp, " -vh %.6g", vp->horiz);
|
| 526 |
cp += strlen(cp);
|
| 527 |
}
|
| 528 |
if (!FEQ(vp->vert,stdview.vert)) {
|
| 529 |
sprintf(cp, " -vv %.6g", vp->vert);
|
| 530 |
cp += strlen(cp);
|
| 531 |
}
|
| 532 |
if (!FEQ(vp->vfore,stdview.vfore)) {
|
| 533 |
sprintf(cp, " -vo %.6g", vp->vfore);
|
| 534 |
cp += strlen(cp);
|
| 535 |
}
|
| 536 |
if (!FEQ(vp->vaft,stdview.vaft)) {
|
| 537 |
sprintf(cp, " -va %.6g", vp->vaft);
|
| 538 |
cp += strlen(cp);
|
| 539 |
}
|
| 540 |
if (!FEQ(vp->hoff,stdview.hoff)) {
|
| 541 |
sprintf(cp, " -vs %.6g", vp->hoff);
|
| 542 |
cp += strlen(cp);
|
| 543 |
}
|
| 544 |
if (!FEQ(vp->voff,stdview.voff)) {
|
| 545 |
sprintf(cp, " -vl %.6g", vp->voff);
|
| 546 |
cp += strlen(cp);
|
| 547 |
}
|
| 548 |
return(vwstr);
|
| 549 |
}
|
| 550 |
|
| 551 |
|
| 552 |
int
|
| 553 |
isview( /* is this a view string? */
|
| 554 |
char *s
|
| 555 |
)
|
| 556 |
{
|
| 557 |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","rvu","rpiece","pinterp",NULL};
|
| 558 |
extern char *progname;
|
| 559 |
char *cp;
|
| 560 |
char **an;
|
| 561 |
/* add program name to list */
|
| 562 |
if (altname[0] == NULL) {
|
| 563 |
for (cp = progname; *cp; cp++)
|
| 564 |
;
|
| 565 |
while (cp > progname && !ISDIRSEP(cp[-1]))
|
| 566 |
cp--;
|
| 567 |
altname[0] = cp;
|
| 568 |
}
|
| 569 |
/* skip leading path */
|
| 570 |
cp = s;
|
| 571 |
while (*cp && *cp != ' ')
|
| 572 |
cp++;
|
| 573 |
while (cp > s && !ISDIRSEP(cp[-1]))
|
| 574 |
cp--;
|
| 575 |
for (an = altname; *an != NULL; an++)
|
| 576 |
if (!strncmp(*an, cp, strlen(*an)))
|
| 577 |
return(1);
|
| 578 |
return(0);
|
| 579 |
}
|
| 580 |
|
| 581 |
|
| 582 |
struct myview {
|
| 583 |
VIEW *hv;
|
| 584 |
int ok;
|
| 585 |
};
|
| 586 |
|
| 587 |
|
| 588 |
static int
|
| 589 |
gethview( /* get view from header */
|
| 590 |
char *s,
|
| 591 |
void *v
|
| 592 |
)
|
| 593 |
{
|
| 594 |
if (isview(s) && sscanview(((struct myview*)v)->hv, s) > 0)
|
| 595 |
((struct myview*)v)->ok++;
|
| 596 |
return(0);
|
| 597 |
}
|
| 598 |
|
| 599 |
|
| 600 |
int
|
| 601 |
viewfile( /* get view from file */
|
| 602 |
char *fname,
|
| 603 |
VIEW *vp,
|
| 604 |
RESOLU *rp
|
| 605 |
)
|
| 606 |
{
|
| 607 |
struct myview mvs;
|
| 608 |
FILE *fp;
|
| 609 |
|
| 610 |
if (fname == NULL || !strcmp(fname, "-"))
|
| 611 |
fp = stdin;
|
| 612 |
else if ((fp = fopen(fname, "r")) == NULL)
|
| 613 |
return(-1);
|
| 614 |
|
| 615 |
mvs.hv = vp;
|
| 616 |
mvs.ok = 0;
|
| 617 |
|
| 618 |
getheader(fp, gethview, &mvs);
|
| 619 |
|
| 620 |
if (rp != NULL && !fgetsresolu(rp, fp))
|
| 621 |
mvs.ok = 0;
|
| 622 |
|
| 623 |
fclose(fp);
|
| 624 |
|
| 625 |
return(mvs.ok);
|
| 626 |
}
|
