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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 "standard.h" |
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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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|
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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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|
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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 hvec and vvec, return message on error */ |
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register VIEW *v; |
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{ |
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extern double tan(), normalize(); |
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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 (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 (normalize(v->vdir) == 0.0) /* normalize direction */ |
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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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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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fcross(v->hvec, v->vdir, v->vup); /* compute horiz dir */ |
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|
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if (normalize(v->hvec) == 0.0) |
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return("illegal view up vector"); |
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return("view up parallel to view direction"); |
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|
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fcross(v->vvec, v->hvec, v->vdir); /* compute vert dir */ |
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|
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if (v->type == VT_PAR) |
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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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|
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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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else if (v->type == VT_PER) |
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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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else |
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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->hn2 <= FTINY || v->hn2 >= FHUGE) |
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return("illegal horizontal view size"); |
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|
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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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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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|
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if (v->type == VT_PAR) |
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v->vn2 = v->vert; |
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else |
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v->vn2 = 2.0 * tan(v->vert*(PI/180.0/2.0)); |
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|
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if (v->vn2 <= FTINY || v->vn2 >= FHUGE) |
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return("illegal vertical view size"); |
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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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v->vn2 *= v->vn2; |
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|
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return(NULL); |
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} |
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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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|
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|
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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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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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|
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if (v->type == VT_PAR) { /* parallel view */ |
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orig[0] = v->vp[0] + x*v->hvec[0] + y*v->vvec[0]; |
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orig[1] = v->vp[1] + x*v->hvec[1] + y*v->vvec[1]; |
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orig[2] = v->vp[2] + x*v->hvec[2] + y*v->vvec[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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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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normalize(direc); |
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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); |
187 |
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
188 |
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
189 |
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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]; |
192 |
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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; |
197 |
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y *= (1.0/180.0)*v->vert; |
198 |
> |
d = x*x + y*y; |
199 |
> |
if (d > 1.0) |
200 |
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return(-1.0); |
201 |
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d = sqrt(d); |
202 |
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z = cos(PI*d); |
203 |
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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]; |
208 |
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
209 |
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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); |
216 |
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d = x*x + y*y; |
217 |
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z = (1. - d)/(1. + d); |
218 |
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d = d <= FTINY*FTINY ? PI : sqrt((1.0 - z*z)/d); |
219 |
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x *= d; |
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y *= d; |
221 |
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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]; |
225 |
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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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|
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viewpixel(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 */ |
235 |
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FVECT ip; |
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register VIEW *v; |
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FVECT p; |
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{ |
239 |
< |
extern double sqrt(); |
97 |
< |
double d; |
239 |
> |
double d, d2; |
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FVECT disp; |
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|
242 |
< |
disp[0] = p[0] - v->vp[0]; |
101 |
< |
disp[1] = p[1] - v->vp[1]; |
102 |
< |
disp[2] = p[2] - v->vp[2]; |
242 |
> |
VSUB(disp, p, v->vp); |
243 |
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|
244 |
< |
if (v->type == VT_PAR) { /* parallel view */ |
245 |
< |
if (zp != NULL) |
246 |
< |
*zp = DOT(disp,v->vdir); |
247 |
< |
} else { /* perspective view */ |
248 |
< |
d = 1.0/DOT(disp,v->vdir); |
249 |
< |
if (zp != NULL) { |
250 |
< |
*zp = sqrt(DOT(disp,disp)); |
251 |
< |
if (d < 0.0) |
252 |
< |
*zp = -*zp; |
244 |
> |
switch (v->type) { |
245 |
> |
case VT_PAR: /* parallel view */ |
246 |
> |
ip[2] = DOT(disp,v->vdir) - v->vfore; |
247 |
> |
break; |
248 |
> |
case VT_PER: /* perspective view */ |
249 |
> |
d = DOT(disp,v->vdir); |
250 |
> |
ip[2] = VLEN(disp); |
251 |
> |
if (d < 0.0) { /* fold pyramid */ |
252 |
> |
ip[2] = -ip[2]; |
253 |
> |
d = -d; |
254 |
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} |
255 |
< |
disp[0] *= d; |
256 |
< |
disp[1] *= d; |
257 |
< |
disp[2] *= d; |
255 |
> |
if (d > FTINY) { |
256 |
> |
d = 1.0/d; |
257 |
> |
disp[0] *= d; |
258 |
> |
disp[1] *= d; |
259 |
> |
disp[2] *= d; |
260 |
> |
} |
261 |
> |
ip[2] *= (1.0 - v->vfore*d); |
262 |
> |
break; |
263 |
> |
case VT_HEM: /* hemispherical fisheye */ |
264 |
> |
d = normalize(disp); |
265 |
> |
if (DOT(disp,v->vdir) < 0.0) |
266 |
> |
ip[2] = -d; |
267 |
> |
else |
268 |
> |
ip[2] = d; |
269 |
> |
ip[2] -= v->vfore; |
270 |
> |
break; |
271 |
> |
case VT_CYL: /* cylindrical panorama */ |
272 |
> |
d = DOT(disp,v->hvec); |
273 |
> |
d2 = DOT(disp,v->vdir); |
274 |
> |
ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
275 |
> |
d = 1.0/sqrt(d*d + d2*d2); |
276 |
> |
ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
277 |
> |
ip[2] = VLEN(disp); |
278 |
> |
ip[2] *= (1.0 - v->vfore*d); |
279 |
> |
return; |
280 |
> |
case VT_ANG: /* angular fisheye */ |
281 |
> |
ip[0] = 0.5 - v->hoff; |
282 |
> |
ip[1] = 0.5 - v->voff; |
283 |
> |
ip[2] = normalize(disp) - v->vfore; |
284 |
> |
d = DOT(disp,v->vdir); |
285 |
> |
if (d >= 1.0-FTINY) |
286 |
> |
return; |
287 |
> |
if (d <= -(1.0-FTINY)) { |
288 |
> |
ip[0] += 180.0/v->horiz; |
289 |
> |
return; |
290 |
> |
} |
291 |
> |
d = (180.0/PI)*acos(d) / sqrt(1.0 - d*d); |
292 |
> |
ip[0] += DOT(disp,v->hvec)*d/v->horiz; |
293 |
> |
ip[1] += DOT(disp,v->vvec)*d/v->vert; |
294 |
> |
return; |
295 |
> |
case VT_PLS: /* planispheric fisheye */ |
296 |
> |
ip[0] = 0.5 - v->hoff; |
297 |
> |
ip[1] = 0.5 - v->voff; |
298 |
> |
ip[2] = normalize(disp) - v->vfore; |
299 |
> |
d = DOT(disp,v->vdir); |
300 |
> |
if (d >= 1.0-FTINY) |
301 |
> |
return; |
302 |
> |
if (d <= -(1.0-FTINY)) |
303 |
> |
return; /* really an error */ |
304 |
> |
d = sqrt(1.0 - d*d) / (1.0 + d); |
305 |
> |
ip[0] += DOT(disp,v->hvec)*d/sqrt(v->hn2); |
306 |
> |
ip[1] += DOT(disp,v->vvec)*d/sqrt(v->vn2); |
307 |
> |
return; |
308 |
|
} |
309 |
< |
*xp = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
310 |
< |
*yp = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
309 |
> |
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
310 |
> |
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
311 |
|
} |
312 |
|
|
313 |
|
|
314 |
+ |
void |
315 |
+ |
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
316 |
+ |
RREAL loc[2]; |
317 |
+ |
register RESOLU *rp; |
318 |
+ |
int px, py; |
319 |
+ |
{ |
320 |
+ |
register int x, y; |
321 |
+ |
|
322 |
+ |
if (rp->rt & YMAJOR) { |
323 |
+ |
x = px; |
324 |
+ |
y = py; |
325 |
+ |
} else { |
326 |
+ |
x = py; |
327 |
+ |
y = px; |
328 |
+ |
} |
329 |
+ |
if (rp->rt & XDECR) |
330 |
+ |
x = rp->xr-1 - x; |
331 |
+ |
if (rp->rt & YDECR) |
332 |
+ |
y = rp->yr-1 - y; |
333 |
+ |
loc[0] = (x+.5)/rp->xr; |
334 |
+ |
loc[1] = (y+.5)/rp->yr; |
335 |
+ |
} |
336 |
+ |
|
337 |
+ |
|
338 |
+ |
void |
339 |
+ |
loc2pix(pp, rp, lx, ly) /* compute pixel pos. from image location */ |
340 |
+ |
int pp[2]; |
341 |
+ |
register RESOLU *rp; |
342 |
+ |
double lx, ly; |
343 |
+ |
{ |
344 |
+ |
register int x, y; |
345 |
+ |
|
346 |
+ |
x = lx * rp->xr; |
347 |
+ |
y = ly * rp->yr; |
348 |
+ |
if (rp->rt & XDECR) |
349 |
+ |
x = rp->xr-1 - x; |
350 |
+ |
if (rp->rt & YDECR) |
351 |
+ |
y = rp->yr-1 - y; |
352 |
+ |
if (rp->rt & YMAJOR) { |
353 |
+ |
pp[0] = x; |
354 |
+ |
pp[1] = y; |
355 |
+ |
} else { |
356 |
+ |
pp[0] = y; |
357 |
+ |
pp[1] = x; |
358 |
+ |
} |
359 |
+ |
} |
360 |
+ |
|
361 |
+ |
|
362 |
|
int |
363 |
|
getviewopt(v, ac, av) /* process view argument */ |
364 |
|
register VIEW *v; |
365 |
|
int ac; |
366 |
|
register char *av[]; |
367 |
|
{ |
368 |
< |
#define check(c,n) if ((av[0][c]&&av[0][c]!=' ') || n>=ac) return(-1) |
369 |
< |
extern double atof(); |
368 |
> |
#define check(c,l) if ((av[0][c]&&av[0][c]!=' ') || \ |
369 |
> |
badarg(ac-1,av+1,l)) return(-1) |
370 |
|
|
371 |
< |
if (av[0][0] != '-' || av[0][1] != 'v') |
371 |
> |
if (ac <= 0 || av[0][0] != '-' || av[0][1] != 'v') |
372 |
|
return(-1); |
373 |
|
switch (av[0][2]) { |
374 |
|
case 't': /* type */ |
375 |
|
if (!av[0][3] || av[0][3]==' ') |
376 |
|
return(-1); |
377 |
< |
check(4,0); |
377 |
> |
check(4,""); |
378 |
|
v->type = av[0][3]; |
379 |
|
return(0); |
380 |
|
case 'p': /* point */ |
381 |
< |
check(3,3); |
381 |
> |
check(3,"fff"); |
382 |
|
v->vp[0] = atof(av[1]); |
383 |
|
v->vp[1] = atof(av[2]); |
384 |
|
v->vp[2] = atof(av[3]); |
385 |
|
return(3); |
386 |
|
case 'd': /* direction */ |
387 |
< |
check(3,3); |
387 |
> |
check(3,"fff"); |
388 |
|
v->vdir[0] = atof(av[1]); |
389 |
|
v->vdir[1] = atof(av[2]); |
390 |
|
v->vdir[2] = atof(av[3]); |
391 |
+ |
v->vdist = 1.; |
392 |
|
return(3); |
393 |
|
case 'u': /* up */ |
394 |
< |
check(3,3); |
394 |
> |
check(3,"fff"); |
395 |
|
v->vup[0] = atof(av[1]); |
396 |
|
v->vup[1] = atof(av[2]); |
397 |
|
v->vup[2] = atof(av[3]); |
398 |
|
return(3); |
399 |
|
case 'h': /* horizontal size */ |
400 |
< |
check(3,1); |
400 |
> |
check(3,"f"); |
401 |
|
v->horiz = atof(av[1]); |
402 |
|
return(1); |
403 |
|
case 'v': /* vertical size */ |
404 |
< |
check(3,1); |
404 |
> |
check(3,"f"); |
405 |
|
v->vert = atof(av[1]); |
406 |
|
return(1); |
407 |
+ |
case 'o': /* fore clipping plane */ |
408 |
+ |
check(3,"f"); |
409 |
+ |
v->vfore = atof(av[1]); |
410 |
+ |
return(1); |
411 |
+ |
case 'a': /* aft clipping plane */ |
412 |
+ |
check(3,"f"); |
413 |
+ |
v->vaft = atof(av[1]); |
414 |
+ |
return(1); |
415 |
|
case 's': /* shift */ |
416 |
< |
check(3,1); |
416 |
> |
check(3,"f"); |
417 |
|
v->hoff = atof(av[1]); |
418 |
|
return(1); |
419 |
|
case 'l': /* lift */ |
420 |
< |
check(3,1); |
420 |
> |
check(3,"f"); |
421 |
|
v->voff = atof(av[1]); |
422 |
|
return(1); |
423 |
|
default: |
437 |
|
int na; |
438 |
|
int nvopts = 0; |
439 |
|
|
440 |
< |
while (*s == ' ') |
441 |
< |
s++; |
442 |
< |
do { |
440 |
> |
while (isspace(*s)) |
441 |
> |
if (!*s++) |
442 |
> |
return(0); |
443 |
> |
while (*s) { |
444 |
|
ac = 0; |
445 |
|
do { |
446 |
< |
av[ac++] = s; |
447 |
< |
while (*s && *s != ' ') |
446 |
> |
if (ac || *s == '-') |
447 |
> |
av[ac++] = s; |
448 |
> |
while (*s && !isspace(*s)) |
449 |
|
s++; |
450 |
< |
while (*s == ' ') |
450 |
> |
while (isspace(*s)) |
451 |
|
s++; |
452 |
|
} while (*s && ac < 4); |
453 |
|
if ((na = getviewopt(vp, ac, av)) >= 0) { |
454 |
|
if (na+1 < ac) |
455 |
|
s = av[na+1]; |
456 |
|
nvopts++; |
457 |
< |
} |
458 |
< |
} while (*s); |
457 |
> |
} else if (ac > 1) |
458 |
> |
s = av[1]; |
459 |
> |
} |
460 |
|
return(nvopts); |
461 |
|
} |
462 |
|
|
463 |
|
|
464 |
+ |
void |
465 |
|
fprintview(vp, fp) /* write out view parameters */ |
466 |
|
register VIEW *vp; |
467 |
|
FILE *fp; |
468 |
|
{ |
469 |
|
fprintf(fp, " -vt%c", vp->type); |
470 |
|
fprintf(fp, " -vp %.6g %.6g %.6g", vp->vp[0], vp->vp[1], vp->vp[2]); |
471 |
< |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
471 |
> |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0]*vp->vdist, |
472 |
> |
vp->vdir[1]*vp->vdist, |
473 |
> |
vp->vdir[2]*vp->vdist); |
474 |
|
fprintf(fp, " -vu %.6g %.6g %.6g", vp->vup[0], vp->vup[1], vp->vup[2]); |
475 |
|
fprintf(fp, " -vh %.6g -vv %.6g", vp->horiz, vp->vert); |
476 |
< |
fprintf(fp, " -vs %d -vl %d", vp->hoff, vp->voff); |
476 |
> |
fprintf(fp, " -vo %.6g -va %.6g", vp->vfore, vp->vaft); |
477 |
> |
fprintf(fp, " -vs %.6g -vl %.6g", vp->hoff, vp->voff); |
478 |
|
} |
479 |
|
|
480 |
|
|
481 |
< |
static VIEW *hview; /* view from header */ |
482 |
< |
static int gothview; /* success indicator */ |
483 |
< |
static char *altname[] = {NULL,"rpict","rview","pinterp",VIEWSTR,NULL}; |
481 |
> |
char * |
482 |
> |
viewopt(vp) /* translate to minimal view string */ |
483 |
> |
register VIEW *vp; |
484 |
> |
{ |
485 |
> |
static char vwstr[128]; |
486 |
> |
register char *cp = vwstr; |
487 |
|
|
488 |
+ |
*cp = '\0'; |
489 |
+ |
if (vp->type != stdview.type) { |
490 |
+ |
sprintf(cp, " -vt%c", vp->type); |
491 |
+ |
cp += strlen(cp); |
492 |
+ |
} |
493 |
+ |
if (!VEQ(vp->vp,stdview.vp)) { |
494 |
+ |
sprintf(cp, " -vp %.6g %.6g %.6g", |
495 |
+ |
vp->vp[0], vp->vp[1], vp->vp[2]); |
496 |
+ |
cp += strlen(cp); |
497 |
+ |
} |
498 |
+ |
if (!FEQ(vp->vdist,stdview.vdist) || !VEQ(vp->vdir,stdview.vdir)) { |
499 |
+ |
sprintf(cp, " -vd %.6g %.6g %.6g", |
500 |
+ |
vp->vdir[0]*vp->vdist, |
501 |
+ |
vp->vdir[1]*vp->vdist, |
502 |
+ |
vp->vdir[2]*vp->vdist); |
503 |
+ |
cp += strlen(cp); |
504 |
+ |
} |
505 |
+ |
if (!VEQ(vp->vup,stdview.vup)) { |
506 |
+ |
sprintf(cp, " -vu %.6g %.6g %.6g", |
507 |
+ |
vp->vup[0], vp->vup[1], vp->vup[2]); |
508 |
+ |
cp += strlen(cp); |
509 |
+ |
} |
510 |
+ |
if (!FEQ(vp->horiz,stdview.horiz)) { |
511 |
+ |
sprintf(cp, " -vh %.6g", vp->horiz); |
512 |
+ |
cp += strlen(cp); |
513 |
+ |
} |
514 |
+ |
if (!FEQ(vp->vert,stdview.vert)) { |
515 |
+ |
sprintf(cp, " -vv %.6g", vp->vert); |
516 |
+ |
cp += strlen(cp); |
517 |
+ |
} |
518 |
+ |
if (!FEQ(vp->vfore,stdview.vfore)) { |
519 |
+ |
sprintf(cp, " -vo %.6g", vp->vfore); |
520 |
+ |
cp += strlen(cp); |
521 |
+ |
} |
522 |
+ |
if (!FEQ(vp->vaft,stdview.vaft)) { |
523 |
+ |
sprintf(cp, " -va %.6g", vp->vaft); |
524 |
+ |
cp += strlen(cp); |
525 |
+ |
} |
526 |
+ |
if (!FEQ(vp->hoff,stdview.hoff)) { |
527 |
+ |
sprintf(cp, " -vs %.6g", vp->hoff); |
528 |
+ |
cp += strlen(cp); |
529 |
+ |
} |
530 |
+ |
if (!FEQ(vp->voff,stdview.voff)) { |
531 |
+ |
sprintf(cp, " -vl %.6g", vp->voff); |
532 |
+ |
cp += strlen(cp); |
533 |
+ |
} |
534 |
+ |
return(vwstr); |
535 |
+ |
} |
536 |
|
|
537 |
< |
static |
538 |
< |
gethview(s) /* get view from header */ |
537 |
> |
|
538 |
> |
int |
539 |
> |
isview(s) /* is this a view string? */ |
540 |
|
char *s; |
541 |
|
{ |
542 |
+ |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","rvu","rpiece","pinterp",NULL}; |
543 |
+ |
extern char *progname; |
544 |
+ |
register char *cp; |
545 |
|
register char **an; |
546 |
< |
|
546 |
> |
/* add program name to list */ |
547 |
> |
if (altname[0] == NULL) { |
548 |
> |
for (cp = progname; *cp; cp++) |
549 |
> |
; |
550 |
> |
while (cp > progname && !ISDIRSEP(cp[-1])) |
551 |
> |
cp--; |
552 |
> |
altname[0] = cp; |
553 |
> |
} |
554 |
> |
/* skip leading path */ |
555 |
> |
cp = s; |
556 |
> |
while (*cp && *cp != ' ') |
557 |
> |
cp++; |
558 |
> |
while (cp > s && !ISDIRSEP(cp[-1])) |
559 |
> |
cp--; |
560 |
|
for (an = altname; *an != NULL; an++) |
561 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
562 |
< |
if (sscanview(hview, s+strlen(*an)) > 0) |
563 |
< |
gothview++; |
241 |
< |
return; |
242 |
< |
} |
561 |
> |
if (!strncmp(*an, cp, strlen(*an))) |
562 |
> |
return(1); |
563 |
> |
return(0); |
564 |
|
} |
565 |
|
|
566 |
|
|
567 |
+ |
struct myview { |
568 |
+ |
VIEW *hv; |
569 |
+ |
int ok; |
570 |
+ |
}; |
571 |
+ |
|
572 |
+ |
|
573 |
+ |
static int |
574 |
+ |
gethview( /* get view from header */ |
575 |
+ |
char *s, |
576 |
+ |
void *v |
577 |
+ |
) |
578 |
+ |
{ |
579 |
+ |
if (isview(s) && sscanview(((struct myview*)v)->hv, s) > 0) |
580 |
+ |
((struct myview*)v)->ok++; |
581 |
+ |
return(0); |
582 |
+ |
} |
583 |
+ |
|
584 |
+ |
|
585 |
|
int |
586 |
< |
viewfile(fname, vp) /* get view from file */ |
586 |
> |
viewfile(fname, vp, rp) /* get view from file */ |
587 |
|
char *fname; |
588 |
|
VIEW *vp; |
589 |
+ |
RESOLU *rp; |
590 |
|
{ |
591 |
< |
extern char *progname; |
591 |
> |
struct myview mvs; |
592 |
|
FILE *fp; |
593 |
|
|
594 |
< |
if ((fp = fopen(fname, "r")) == NULL) |
594 |
> |
if (fname == NULL || !strcmp(fname, "-")) |
595 |
> |
fp = stdin; |
596 |
> |
else if ((fp = fopen(fname, "r")) == NULL) |
597 |
|
return(-1); |
598 |
|
|
599 |
< |
altname[0] = progname; |
600 |
< |
hview = vp; |
259 |
< |
gothview = 0; |
599 |
> |
mvs.hv = vp; |
600 |
> |
mvs.ok = 0; |
601 |
|
|
602 |
< |
getheader(fp, gethview); |
602 |
> |
getheader(fp, gethview, &mvs); |
603 |
|
|
604 |
+ |
if (rp != NULL && !fgetsresolu(rp, fp)) |
605 |
+ |
mvs.ok = 0; |
606 |
+ |
|
607 |
|
fclose(fp); |
608 |
|
|
609 |
< |
return(gothview); |
609 |
> |
return(mvs.ok); |
610 |
|
} |