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/* Copyright (c) 1986 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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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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* 10/17/85 |
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* External symbols declared in view.h |
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*/ |
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#include <ctype.h> |
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#include "copyright.h" |
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#include "standard.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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VIEW stdview = STDVIEW(512); /* default view parameters */ |
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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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char * |
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sskip(s) /* skip a word */ |
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register char *s; |
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{ |
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while (isspace(*s)) s++; |
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while (*s && !isspace(*s)) s++; |
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return(s); |
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} |
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VIEW stdview = STDVIEW; /* default view parameters */ |
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static gethfunc gethview; |
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|
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char * |
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setview(v) /* set vhinc and vvinc, return message on error */ |
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setview(v) /* set hvec and vvec, return message on error */ |
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register VIEW *v; |
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{ |
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double tan(), dt; |
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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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|
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if (normalize(v->vdir) == 0.0) /* normalize direction */ |
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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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|
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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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|
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fcross(v->vhinc, v->vdir, v->vup); /* compute horiz dir */ |
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if (normalize(v->vhinc) == 0.0) |
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return("illegal view up vector"); |
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|
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fcross(v->vvinc, v->vhinc, v->vdir); /* compute vert dir */ |
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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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|
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if (v->type == VT_PAR) |
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dt = v->horiz; |
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else if (v->type == VT_PER) |
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dt = 2.0 * tan(v->horiz*(PI/180.0/2.0)); |
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else |
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return("unknown view type"); |
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fcross(v->hvec, v->vdir, v->vup); /* compute horiz dir */ |
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if (dt <= FTINY || dt >= FHUGE) |
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return("illegal horizontal view size"); |
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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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if (v->hresolu <= 0) |
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return("illegal horizontal resolution"); |
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fcross(v->vvec, v->hvec, v->vdir); /* compute vert dir */ |
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|
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dt /= (double)v->hresolu; |
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v->vhinc[0] *= dt; |
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v->vhinc[1] *= dt; |
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v->vhinc[2] *= dt; |
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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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if (v->type == VT_PAR) |
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dt = v->vert; |
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else |
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dt = 2.0 * tan(v->vert*(PI/180.0/2.0)); |
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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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default: |
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return("unknown view type"); |
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} |
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if (v->type != VT_ANG) { |
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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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if (dt <= FTINY || dt >= FHUGE) |
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return("illegal vertical view size"); |
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return(NULL); |
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} |
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if (v->vresolu <= 0) |
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return("illegal vertical resolution"); |
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|
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dt /= (double)v->vresolu; |
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v->vvinc[0] *= dt; |
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v->vvinc[1] *= dt; |
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v->vvinc[2] *= dt; |
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v->vhs2 = 1.0/DOT(v->vhinc,v->vhinc); |
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v->vvs2 = 1.0/DOT(v->vvinc,v->vvinc); |
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|
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return(NULL); |
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void |
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normaspect(va, ap, xp, yp) /* 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, *yp; /* x and y resolution in (or out if *ap!=0) */ |
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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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rayview(orig, direc, v, x, y) /* compute ray origin and direction */ |
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double |
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viewray(orig, direc, v, x, y) /* compute ray origin and direction */ |
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FVECT orig, direc; |
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register VIEW *v; |
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double x, y; |
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{ |
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x -= 0.5 * v->hresolu; |
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y -= 0.5 * v->vresolu; |
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double d, z; |
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|
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x += v->hoff - 0.5; |
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y += v->voff - 0.5; |
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if (v->type == VT_PAR) { /* parallel view */ |
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orig[0] = v->vp[0] + x*v->vhinc[0] + y*v->vvinc[0]; |
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orig[1] = v->vp[1] + x*v->vhinc[1] + y*v->vvinc[1]; |
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orig[2] = v->vp[2] + x*v->vhinc[2] + y*v->vvinc[2]; |
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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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} else { /* perspective view */ |
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VCOPY(orig, v->vp); |
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direc[0] = v->vdir[0] + x*v->vhinc[0] + y*v->vvinc[0]; |
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direc[1] = v->vdir[1] + x*v->vhinc[1] + y*v->vvinc[1]; |
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direc[2] = v->vdir[2] + x*v->vhinc[2] + y*v->vvinc[2]; |
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normalize(direc); |
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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 *= v->horiz/180.0; |
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y *= v->vert/180.0; |
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d = x*x + y*y; |
189 |
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if (d > 1.0) |
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return(-1.0); |
191 |
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d = sqrt(d); |
192 |
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z = cos(PI*d); |
193 |
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d = d <= FTINY ? PI : sqrt(1 - 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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} |
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return(-1.0); |
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} |
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pixelview(xp, yp, zp, v, p) /* find image location for point */ |
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double *xp, *yp, *zp; |
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void |
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viewloc(ip, v, p) /* find image location for point */ |
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FVECT ip; |
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register VIEW *v; |
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FVECT p; |
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{ |
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extern double sqrt(); |
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double d; |
214 |
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double d, d2; |
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FVECT disp; |
216 |
< |
|
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> |
|
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disp[0] = p[0] - v->vp[0]; |
218 |
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disp[1] = p[1] - v->vp[1]; |
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disp[2] = p[2] - v->vp[2]; |
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221 |
< |
if (v->type == VT_PAR) { /* parallel view */ |
222 |
< |
if (zp != NULL) |
223 |
< |
*zp = DOT(disp,v->vdir); |
224 |
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} else { /* perspective view */ |
225 |
< |
d = 1.0/DOT(disp,v->vdir); |
226 |
< |
if (zp != NULL) { |
227 |
< |
*zp = sqrt(DOT(disp,disp)); |
228 |
< |
if (d < 0.0) |
229 |
< |
*zp = -*zp; |
221 |
> |
switch (v->type) { |
222 |
> |
case VT_PAR: /* parallel view */ |
223 |
> |
ip[2] = DOT(disp,v->vdir) - v->vfore; |
224 |
> |
break; |
225 |
> |
case VT_PER: /* perspective view */ |
226 |
> |
d = DOT(disp,v->vdir); |
227 |
> |
ip[2] = VLEN(disp); |
228 |
> |
if (d < 0.0) { /* fold pyramid */ |
229 |
> |
ip[2] = -ip[2]; |
230 |
> |
d = -d; |
231 |
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} |
232 |
< |
disp[0] *= d; |
233 |
< |
disp[1] *= d; |
234 |
< |
disp[2] *= d; |
232 |
> |
if (d > FTINY) { |
233 |
> |
d = 1.0/d; |
234 |
> |
disp[0] *= d; |
235 |
> |
disp[1] *= d; |
236 |
> |
disp[2] *= d; |
237 |
> |
} |
238 |
> |
ip[2] *= (1.0 - v->vfore*d); |
239 |
> |
break; |
240 |
> |
case VT_HEM: /* hemispherical fisheye */ |
241 |
> |
d = normalize(disp); |
242 |
> |
if (DOT(disp,v->vdir) < 0.0) |
243 |
> |
ip[2] = -d; |
244 |
> |
else |
245 |
> |
ip[2] = d; |
246 |
> |
ip[2] -= v->vfore; |
247 |
> |
break; |
248 |
> |
case VT_CYL: /* cylindrical panorama */ |
249 |
> |
d = DOT(disp,v->hvec); |
250 |
> |
d2 = DOT(disp,v->vdir); |
251 |
> |
ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
252 |
> |
d = 1.0/sqrt(d*d + d2*d2); |
253 |
> |
ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
254 |
> |
ip[2] = VLEN(disp); |
255 |
> |
ip[2] *= (1.0 - v->vfore*d); |
256 |
> |
return; |
257 |
> |
case VT_ANG: /* angular fisheye */ |
258 |
> |
ip[0] = 0.5 - v->hoff; |
259 |
> |
ip[1] = 0.5 - v->voff; |
260 |
> |
ip[2] = normalize(disp) - v->vfore; |
261 |
> |
d = DOT(disp,v->vdir); |
262 |
> |
if (d >= 1.0-FTINY) |
263 |
> |
return; |
264 |
> |
if (d <= -(1.0-FTINY)) { |
265 |
> |
ip[0] += 180.0/v->horiz; |
266 |
> |
return; |
267 |
> |
} |
268 |
> |
d = acos(d)/PI / sqrt(1.0 - d*d); |
269 |
> |
ip[0] += DOT(disp,v->hvec)*d*180.0/v->horiz; |
270 |
> |
ip[1] += DOT(disp,v->vvec)*d*180.0/v->vert; |
271 |
> |
return; |
272 |
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} |
273 |
< |
*xp = DOT(disp,v->vhinc)*v->vhs2 + 0.5*v->hresolu; |
274 |
< |
*yp = DOT(disp,v->vvinc)*v->vvs2 + 0.5*v->vresolu; |
273 |
> |
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
274 |
> |
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
275 |
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} |
276 |
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|
277 |
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|
278 |
< |
sscanview(vp, s) /* get view parameters */ |
279 |
< |
register VIEW *vp; |
278 |
> |
void |
279 |
> |
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
280 |
> |
RREAL loc[2]; |
281 |
> |
register RESOLU *rp; |
282 |
> |
int px, py; |
283 |
> |
{ |
284 |
> |
register int x, y; |
285 |
> |
|
286 |
> |
if (rp->rt & YMAJOR) { |
287 |
> |
x = px; |
288 |
> |
y = py; |
289 |
> |
} else { |
290 |
> |
x = py; |
291 |
> |
y = px; |
292 |
> |
} |
293 |
> |
if (rp->rt & XDECR) |
294 |
> |
x = rp->xr-1 - x; |
295 |
> |
if (rp->rt & YDECR) |
296 |
> |
y = rp->yr-1 - y; |
297 |
> |
loc[0] = (x+.5)/rp->xr; |
298 |
> |
loc[1] = (y+.5)/rp->yr; |
299 |
> |
} |
300 |
> |
|
301 |
> |
|
302 |
> |
void |
303 |
> |
loc2pix(pp, rp, lx, ly) /* compute pixel pos. from image location */ |
304 |
> |
int pp[2]; |
305 |
> |
register RESOLU *rp; |
306 |
> |
double lx, ly; |
307 |
> |
{ |
308 |
> |
register int x, y; |
309 |
> |
|
310 |
> |
x = lx * rp->xr; |
311 |
> |
y = ly * rp->yr; |
312 |
> |
if (rp->rt & XDECR) |
313 |
> |
x = rp->xr-1 - x; |
314 |
> |
if (rp->rt & YDECR) |
315 |
> |
y = rp->yr-1 - y; |
316 |
> |
if (rp->rt & YMAJOR) { |
317 |
> |
pp[0] = x; |
318 |
> |
pp[1] = y; |
319 |
> |
} else { |
320 |
> |
pp[0] = y; |
321 |
> |
pp[1] = x; |
322 |
> |
} |
323 |
> |
} |
324 |
> |
|
325 |
> |
|
326 |
> |
int |
327 |
> |
getviewopt(v, ac, av) /* process view argument */ |
328 |
> |
register VIEW *v; |
329 |
> |
int ac; |
330 |
> |
register char *av[]; |
331 |
> |
{ |
332 |
> |
#define check(c,l) if ((av[0][c]&&av[0][c]!=' ') || \ |
333 |
> |
badarg(ac-1,av+1,l)) return(-1) |
334 |
> |
|
335 |
> |
if (ac <= 0 || av[0][0] != '-' || av[0][1] != 'v') |
336 |
> |
return(-1); |
337 |
> |
switch (av[0][2]) { |
338 |
> |
case 't': /* type */ |
339 |
> |
if (!av[0][3] || av[0][3]==' ') |
340 |
> |
return(-1); |
341 |
> |
check(4,""); |
342 |
> |
v->type = av[0][3]; |
343 |
> |
return(0); |
344 |
> |
case 'p': /* point */ |
345 |
> |
check(3,"fff"); |
346 |
> |
v->vp[0] = atof(av[1]); |
347 |
> |
v->vp[1] = atof(av[2]); |
348 |
> |
v->vp[2] = atof(av[3]); |
349 |
> |
return(3); |
350 |
> |
case 'd': /* direction */ |
351 |
> |
check(3,"fff"); |
352 |
> |
v->vdir[0] = atof(av[1]); |
353 |
> |
v->vdir[1] = atof(av[2]); |
354 |
> |
v->vdir[2] = atof(av[3]); |
355 |
> |
v->vdist = 1.; |
356 |
> |
return(3); |
357 |
> |
case 'u': /* up */ |
358 |
> |
check(3,"fff"); |
359 |
> |
v->vup[0] = atof(av[1]); |
360 |
> |
v->vup[1] = atof(av[2]); |
361 |
> |
v->vup[2] = atof(av[3]); |
362 |
> |
return(3); |
363 |
> |
case 'h': /* horizontal size */ |
364 |
> |
check(3,"f"); |
365 |
> |
v->horiz = atof(av[1]); |
366 |
> |
return(1); |
367 |
> |
case 'v': /* vertical size */ |
368 |
> |
check(3,"f"); |
369 |
> |
v->vert = atof(av[1]); |
370 |
> |
return(1); |
371 |
> |
case 'o': /* fore clipping plane */ |
372 |
> |
check(3,"f"); |
373 |
> |
v->vfore = atof(av[1]); |
374 |
> |
return(1); |
375 |
> |
case 'a': /* aft clipping plane */ |
376 |
> |
check(3,"f"); |
377 |
> |
v->vaft = atof(av[1]); |
378 |
> |
return(1); |
379 |
> |
case 's': /* shift */ |
380 |
> |
check(3,"f"); |
381 |
> |
v->hoff = atof(av[1]); |
382 |
> |
return(1); |
383 |
> |
case 'l': /* lift */ |
384 |
> |
check(3,"f"); |
385 |
> |
v->voff = atof(av[1]); |
386 |
> |
return(1); |
387 |
> |
default: |
388 |
> |
return(-1); |
389 |
> |
} |
390 |
> |
#undef check |
391 |
> |
} |
392 |
> |
|
393 |
> |
|
394 |
> |
int |
395 |
> |
sscanview(vp, s) /* get view parameters from string */ |
396 |
> |
VIEW *vp; |
397 |
|
register char *s; |
398 |
|
{ |
399 |
< |
for ( ; ; ) |
400 |
< |
switch (*s++) { |
401 |
< |
case '\0': |
402 |
< |
case '\n': |
399 |
> |
int ac; |
400 |
> |
char *av[4]; |
401 |
> |
int na; |
402 |
> |
int nvopts = 0; |
403 |
> |
|
404 |
> |
while (isspace(*s)) |
405 |
> |
if (!*s++) |
406 |
|
return(0); |
407 |
< |
case '-': |
408 |
< |
switch (*s++) { |
409 |
< |
case '\0': |
410 |
< |
return(-1); |
411 |
< |
case 'x': |
412 |
< |
if (sscanf(s, "%d", &vp->hresolu) != 1) |
413 |
< |
return(-1); |
414 |
< |
s = sskip(s); |
415 |
< |
continue; |
416 |
< |
case 'y': |
417 |
< |
if (sscanf(s, "%d", &vp->vresolu) != 1) |
418 |
< |
return(-1); |
419 |
< |
s = sskip(s); |
420 |
< |
continue; |
421 |
< |
case 'v': |
422 |
< |
switch (*s++) { |
423 |
< |
case '\0': |
424 |
< |
return(-1); |
171 |
< |
case 't': |
172 |
< |
vp->type = *s++; |
173 |
< |
continue; |
174 |
< |
case 'p': |
175 |
< |
if (sscanf(s, "%lf %lf %lf", |
176 |
< |
&vp->vp[0], |
177 |
< |
&vp->vp[1], |
178 |
< |
&vp->vp[2]) != 3) |
179 |
< |
return(-1); |
180 |
< |
s = sskip(sskip(sskip(s))); |
181 |
< |
continue; |
182 |
< |
case 'd': |
183 |
< |
if (sscanf(s, "%lf %lf %lf", |
184 |
< |
&vp->vdir[0], |
185 |
< |
&vp->vdir[1], |
186 |
< |
&vp->vdir[2]) != 3) |
187 |
< |
return(-1); |
188 |
< |
s = sskip(sskip(sskip(s))); |
189 |
< |
continue; |
190 |
< |
case 'u': |
191 |
< |
if (sscanf(s, "%lf %lf %lf", |
192 |
< |
&vp->vup[0], |
193 |
< |
&vp->vup[1], |
194 |
< |
&vp->vup[2]) != 3) |
195 |
< |
return(-1); |
196 |
< |
s = sskip(sskip(sskip(s))); |
197 |
< |
continue; |
198 |
< |
case 'h': |
199 |
< |
if (sscanf(s, "%lf", |
200 |
< |
&vp->horiz) != 1) |
201 |
< |
return(-1); |
202 |
< |
s = sskip(s); |
203 |
< |
continue; |
204 |
< |
case 'v': |
205 |
< |
if (sscanf(s, "%lf", |
206 |
< |
&vp->vert) != 1) |
207 |
< |
return(-1); |
208 |
< |
s = sskip(s); |
209 |
< |
continue; |
210 |
< |
} |
211 |
< |
continue; |
212 |
< |
} |
213 |
< |
continue; |
214 |
< |
} |
407 |
> |
while (*s) { |
408 |
> |
ac = 0; |
409 |
> |
do { |
410 |
> |
if (ac || *s == '-') |
411 |
> |
av[ac++] = s; |
412 |
> |
while (*s && !isspace(*s)) |
413 |
> |
s++; |
414 |
> |
while (isspace(*s)) |
415 |
> |
s++; |
416 |
> |
} while (*s && ac < 4); |
417 |
> |
if ((na = getviewopt(vp, ac, av)) >= 0) { |
418 |
> |
if (na+1 < ac) |
419 |
> |
s = av[na+1]; |
420 |
> |
nvopts++; |
421 |
> |
} else if (ac > 1) |
422 |
> |
s = av[1]; |
423 |
> |
} |
424 |
> |
return(nvopts); |
425 |
|
} |
426 |
|
|
427 |
|
|
428 |
+ |
void |
429 |
|
fprintview(vp, fp) /* write out view parameters */ |
430 |
|
register VIEW *vp; |
431 |
|
FILE *fp; |
432 |
|
{ |
433 |
|
fprintf(fp, " -vt%c", vp->type); |
434 |
|
fprintf(fp, " -vp %.6g %.6g %.6g", vp->vp[0], vp->vp[1], vp->vp[2]); |
435 |
< |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
435 |
> |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0]*vp->vdist, |
436 |
> |
vp->vdir[1]*vp->vdist, |
437 |
> |
vp->vdir[2]*vp->vdist); |
438 |
|
fprintf(fp, " -vu %.6g %.6g %.6g", vp->vup[0], vp->vup[1], vp->vup[2]); |
439 |
|
fprintf(fp, " -vh %.6g -vv %.6g", vp->horiz, vp->vert); |
440 |
< |
fprintf(fp, " -x %d -y %d", vp->hresolu, vp->vresolu); |
440 |
> |
fprintf(fp, " -vo %.6g -va %.6g", vp->vfore, vp->vaft); |
441 |
> |
fprintf(fp, " -vs %.6g -vl %.6g", vp->hoff, vp->voff); |
442 |
|
} |
443 |
|
|
444 |
|
|
445 |
< |
static VIEW *hview; /* view from header */ |
446 |
< |
static int gothview; /* success indicator */ |
447 |
< |
static char *altname[] = {NULL,"rpict","rview","pinterp",VIEWSTR,NULL}; |
445 |
> |
char * |
446 |
> |
viewopt(vp) /* translate to minimal view string */ |
447 |
> |
register VIEW *vp; |
448 |
> |
{ |
449 |
> |
static char vwstr[128]; |
450 |
> |
register char *cp = vwstr; |
451 |
|
|
452 |
+ |
*cp = '\0'; |
453 |
+ |
if (vp->type != stdview.type) { |
454 |
+ |
sprintf(cp, " -vt%c", vp->type); |
455 |
+ |
cp += strlen(cp); |
456 |
+ |
} |
457 |
+ |
if (!VEQ(vp->vp,stdview.vp)) { |
458 |
+ |
sprintf(cp, " -vp %.6g %.6g %.6g", |
459 |
+ |
vp->vp[0], vp->vp[1], vp->vp[2]); |
460 |
+ |
cp += strlen(cp); |
461 |
+ |
} |
462 |
+ |
if (!FEQ(vp->vdist,stdview.vdist) || !VEQ(vp->vdir,stdview.vdir)) { |
463 |
+ |
sprintf(cp, " -vd %.6g %.6g %.6g", |
464 |
+ |
vp->vdir[0]*vp->vdist, |
465 |
+ |
vp->vdir[1]*vp->vdist, |
466 |
+ |
vp->vdir[2]*vp->vdist); |
467 |
+ |
cp += strlen(cp); |
468 |
+ |
} |
469 |
+ |
if (!VEQ(vp->vup,stdview.vup)) { |
470 |
+ |
sprintf(cp, " -vu %.6g %.6g %.6g", |
471 |
+ |
vp->vup[0], vp->vup[1], vp->vup[2]); |
472 |
+ |
cp += strlen(cp); |
473 |
+ |
} |
474 |
+ |
if (!FEQ(vp->horiz,stdview.horiz)) { |
475 |
+ |
sprintf(cp, " -vh %.6g", vp->horiz); |
476 |
+ |
cp += strlen(cp); |
477 |
+ |
} |
478 |
+ |
if (!FEQ(vp->vert,stdview.vert)) { |
479 |
+ |
sprintf(cp, " -vv %.6g", vp->vert); |
480 |
+ |
cp += strlen(cp); |
481 |
+ |
} |
482 |
+ |
if (!FEQ(vp->vfore,stdview.vfore)) { |
483 |
+ |
sprintf(cp, " -vo %.6g", vp->vfore); |
484 |
+ |
cp += strlen(cp); |
485 |
+ |
} |
486 |
+ |
if (!FEQ(vp->vaft,stdview.vaft)) { |
487 |
+ |
sprintf(cp, " -va %.6g", vp->vaft); |
488 |
+ |
cp += strlen(cp); |
489 |
+ |
} |
490 |
+ |
if (!FEQ(vp->hoff,stdview.hoff)) { |
491 |
+ |
sprintf(cp, " -vs %.6g", vp->hoff); |
492 |
+ |
cp += strlen(cp); |
493 |
+ |
} |
494 |
+ |
if (!FEQ(vp->voff,stdview.voff)) { |
495 |
+ |
sprintf(cp, " -vl %.6g", vp->voff); |
496 |
+ |
cp += strlen(cp); |
497 |
+ |
} |
498 |
+ |
return(vwstr); |
499 |
+ |
} |
500 |
|
|
501 |
< |
static |
502 |
< |
gethview(s) /* get view from header */ |
501 |
> |
|
502 |
> |
int |
503 |
> |
isview(s) /* is this a view string? */ |
504 |
|
char *s; |
505 |
|
{ |
506 |
+ |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","rvu","rpiece","pinterp",NULL}; |
507 |
+ |
extern char *progname; |
508 |
+ |
register char *cp; |
509 |
|
register char **an; |
510 |
< |
|
510 |
> |
/* add program name to list */ |
511 |
> |
if (altname[0] == NULL) { |
512 |
> |
for (cp = progname; *cp; cp++) |
513 |
> |
; |
514 |
> |
while (cp > progname && !ISDIRSEP(cp[-1])) |
515 |
> |
cp--; |
516 |
> |
altname[0] = cp; |
517 |
> |
} |
518 |
> |
/* skip leading path */ |
519 |
> |
cp = s; |
520 |
> |
while (*cp && *cp != ' ') |
521 |
> |
cp++; |
522 |
> |
while (cp > s && !ISDIRSEP(cp[-1])) |
523 |
> |
cp--; |
524 |
|
for (an = altname; *an != NULL; an++) |
525 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
526 |
< |
if (sscanview(hview, s+strlen(*an)) == 0) |
527 |
< |
gothview++; |
246 |
< |
return; |
247 |
< |
} |
525 |
> |
if (!strncmp(*an, cp, strlen(*an))) |
526 |
> |
return(1); |
527 |
> |
return(0); |
528 |
|
} |
529 |
|
|
530 |
|
|
531 |
+ |
struct myview { |
532 |
+ |
VIEW *hv; |
533 |
+ |
int ok; |
534 |
+ |
}; |
535 |
+ |
|
536 |
+ |
|
537 |
+ |
static int |
538 |
+ |
gethview( /* get view from header */ |
539 |
+ |
char *s, |
540 |
+ |
void *v |
541 |
+ |
) |
542 |
+ |
{ |
543 |
+ |
if (isview(s) && sscanview(((struct myview*)v)->hv, s) > 0) |
544 |
+ |
((struct myview*)v)->ok++; |
545 |
+ |
return(0); |
546 |
+ |
} |
547 |
+ |
|
548 |
+ |
|
549 |
|
int |
550 |
< |
viewfile(fname, vp) /* get view from file */ |
550 |
> |
viewfile(fname, vp, rp) /* get view from file */ |
551 |
|
char *fname; |
552 |
|
VIEW *vp; |
553 |
+ |
RESOLU *rp; |
554 |
|
{ |
555 |
< |
extern char *progname; |
555 |
> |
struct myview mvs; |
556 |
|
FILE *fp; |
557 |
|
|
558 |
< |
if ((fp = fopen(fname, "r")) == NULL) |
558 |
> |
if (fname == NULL || !strcmp(fname, "-")) |
559 |
> |
fp = stdin; |
560 |
> |
else if ((fp = fopen(fname, "r")) == NULL) |
561 |
|
return(-1); |
562 |
|
|
563 |
< |
altname[0] = progname; |
564 |
< |
hview = vp; |
264 |
< |
gothview = 0; |
563 |
> |
mvs.hv = vp; |
564 |
> |
mvs.ok = 0; |
565 |
|
|
566 |
< |
getheader(fp, gethview); |
566 |
> |
getheader(fp, gethview, &mvs); |
567 |
|
|
568 |
+ |
if (rp != NULL && !fgetsresolu(rp, fp)) |
569 |
+ |
mvs.ok = 0; |
570 |
+ |
|
571 |
|
fclose(fp); |
572 |
|
|
573 |
< |
return(gothview); |
573 |
> |
return(mvs.ok); |
574 |
|
} |