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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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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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|
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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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if (normalize(v->vup) == 0.0) /* normalize view up */ |
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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 / 90.0; |
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v->vn2 = v->vert / 90.0; |
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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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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) { |
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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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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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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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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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} |
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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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double |
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viewray( /* compute ray origin and direction */ |
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FVECT orig, |
147 |
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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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|
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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] + 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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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(0); |
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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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VCOPY(orig, v->vp); |
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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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return(0); |
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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); |
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return(-1.0); |
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z = sqrt(z); |
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VCOPY(orig, v->vp); |
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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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return(0); |
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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); |
193 |
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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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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); |
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< |
VCOPY(orig, v->vp); |
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if (d <= FTINY) { |
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VCOPY(direc, v->vdir); |
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< |
return(0); |
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} |
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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 = sqrt(1 - z*z)/d; |
209 |
> |
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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< |
return(0); |
215 |
> |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
216 |
> |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
217 |
> |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
218 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
219 |
> |
case VT_PLS: /* planispheric fisheye */ |
220 |
> |
x *= sqrt(v->hn2); |
221 |
> |
y *= sqrt(v->vn2); |
222 |
> |
d = x*x + y*y; |
223 |
> |
z = (1. - d)/(1. + d); |
224 |
> |
x *= (1. + z); |
225 |
> |
y *= (1. + z); |
226 |
> |
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
227 |
> |
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
228 |
> |
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
229 |
> |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
230 |
> |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
231 |
> |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
232 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
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} |
234 |
< |
return(-1); |
234 |
> |
return(-1.0); |
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} |
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238 |
< |
viewpixel(xp, yp, zp, v, p) /* find image location for point */ |
239 |
< |
double *xp, *yp, *zp; |
240 |
< |
register VIEW *v; |
241 |
< |
FVECT p; |
238 |
> |
void |
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> |
viewloc( /* find image location for point */ |
240 |
> |
FVECT ip, |
241 |
> |
VIEW *v, |
242 |
> |
FVECT p |
243 |
> |
) |
244 |
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{ |
245 |
< |
double d; |
245 |
> |
double d, d2; |
246 |
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FVECT disp; |
247 |
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248 |
< |
disp[0] = p[0] - v->vp[0]; |
174 |
< |
disp[1] = p[1] - v->vp[1]; |
175 |
< |
disp[2] = p[2] - v->vp[2]; |
248 |
> |
VSUB(disp, p, v->vp); |
249 |
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|
250 |
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switch (v->type) { |
251 |
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case VT_PAR: /* parallel view */ |
252 |
< |
if (zp != NULL) |
180 |
< |
*zp = DOT(disp,v->vdir); |
252 |
> |
ip[2] = DOT(disp,v->vdir) - v->vfore; |
253 |
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break; |
254 |
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case VT_PER: /* perspective view */ |
255 |
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d = DOT(disp,v->vdir); |
256 |
< |
if (zp != NULL) { |
257 |
< |
*zp = sqrt(DOT(disp,disp)); |
258 |
< |
if (d < 0.0) |
187 |
< |
*zp = -*zp; |
188 |
< |
} |
189 |
< |
if (d < 0.0) /* fold pyramid */ |
256 |
> |
ip[2] = VLEN(disp); |
257 |
> |
if (d < 0.0) { /* fold pyramid */ |
258 |
> |
ip[2] = -ip[2]; |
259 |
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d = -d; |
260 |
+ |
} |
261 |
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if (d > FTINY) { |
262 |
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d = 1.0/d; |
263 |
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disp[0] *= d; |
264 |
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disp[1] *= d; |
265 |
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disp[2] *= d; |
266 |
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} |
267 |
+ |
ip[2] *= (1.0 - v->vfore*d); |
268 |
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break; |
269 |
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case VT_HEM: /* hemispherical fisheye */ |
270 |
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d = normalize(disp); |
271 |
< |
if (zp != NULL) { |
272 |
< |
if (DOT(disp,v->vdir) < 0.0) |
273 |
< |
*zp = -d; |
274 |
< |
else |
275 |
< |
*zp = d; |
205 |
< |
} |
271 |
> |
if (DOT(disp,v->vdir) < 0.0) |
272 |
> |
ip[2] = -d; |
273 |
> |
else |
274 |
> |
ip[2] = d; |
275 |
> |
ip[2] -= v->vfore; |
276 |
|
break; |
277 |
+ |
case VT_CYL: /* cylindrical panorama */ |
278 |
+ |
d = DOT(disp,v->hvec); |
279 |
+ |
d2 = DOT(disp,v->vdir); |
280 |
+ |
ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
281 |
+ |
d = 1.0/sqrt(d*d + d2*d2); |
282 |
+ |
ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
283 |
+ |
ip[2] = VLEN(disp); |
284 |
+ |
ip[2] *= (1.0 - v->vfore*d); |
285 |
+ |
return; |
286 |
|
case VT_ANG: /* angular fisheye */ |
287 |
< |
d = normalize(disp); |
288 |
< |
if (zp != NULL) |
289 |
< |
*zp = d; |
211 |
< |
*xp = 0.5 - v->hoff; |
212 |
< |
*yp = 0.5 - v->voff; |
287 |
> |
ip[0] = 0.5 - v->hoff; |
288 |
> |
ip[1] = 0.5 - v->voff; |
289 |
> |
ip[2] = normalize(disp) - v->vfore; |
290 |
|
d = DOT(disp,v->vdir); |
291 |
|
if (d >= 1.0-FTINY) |
292 |
|
return; |
293 |
|
if (d <= -(1.0-FTINY)) { |
294 |
< |
*xp += 180.0/v->horiz; |
218 |
< |
*yp += 180.0/v->vert; |
294 |
> |
ip[0] += 180.0/v->horiz; |
295 |
|
return; |
296 |
|
} |
297 |
< |
d = acos(d)/PI / sqrt(1.0 - d*d); |
298 |
< |
*xp += DOT(disp,v->hvec)*d*180.0/v->horiz; |
299 |
< |
*yp += DOT(disp,v->vvec)*d*180.0/v->vert; |
297 |
> |
d = (180.0/PI)*acos(d) / sqrt(1.0 - d*d); |
298 |
> |
ip[0] += DOT(disp,v->hvec)*d/v->horiz; |
299 |
> |
ip[1] += DOT(disp,v->vvec)*d/v->vert; |
300 |
|
return; |
301 |
+ |
case VT_PLS: /* planispheric fisheye */ |
302 |
+ |
ip[0] = 0.5 - v->hoff; |
303 |
+ |
ip[1] = 0.5 - v->voff; |
304 |
+ |
ip[2] = normalize(disp) - v->vfore; |
305 |
+ |
d = DOT(disp,v->vdir); |
306 |
+ |
if (d >= 1.0-FTINY) |
307 |
+ |
return; |
308 |
+ |
if (d <= -(1.0-FTINY)) |
309 |
+ |
return; /* really an error */ |
310 |
+ |
ip[0] += DOT(disp,v->hvec)/((1. + d)*sqrt(v->hn2)); |
311 |
+ |
ip[1] += DOT(disp,v->vvec)/((1. + d)*sqrt(v->vn2)); |
312 |
+ |
return; |
313 |
|
} |
314 |
< |
*xp = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
315 |
< |
*yp = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
314 |
> |
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
315 |
> |
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
316 |
|
} |
317 |
|
|
318 |
|
|
319 |
+ |
void |
320 |
+ |
pix2loc( /* compute image location from pixel pos. */ |
321 |
+ |
RREAL loc[2], |
322 |
+ |
RESOLU *rp, |
323 |
+ |
int px, |
324 |
+ |
int py |
325 |
+ |
) |
326 |
+ |
{ |
327 |
+ |
int x, y; |
328 |
+ |
|
329 |
+ |
if (rp->rt & YMAJOR) { |
330 |
+ |
x = px; |
331 |
+ |
y = py; |
332 |
+ |
} else { |
333 |
+ |
x = py; |
334 |
+ |
y = px; |
335 |
+ |
} |
336 |
+ |
if (rp->rt & XDECR) |
337 |
+ |
x = rp->xr-1 - x; |
338 |
+ |
if (rp->rt & YDECR) |
339 |
+ |
y = rp->yr-1 - y; |
340 |
+ |
loc[0] = (x+.5)/rp->xr; |
341 |
+ |
loc[1] = (y+.5)/rp->yr; |
342 |
+ |
} |
343 |
+ |
|
344 |
+ |
|
345 |
+ |
void |
346 |
+ |
loc2pix( /* compute pixel pos. from image location */ |
347 |
+ |
int pp[2], |
348 |
+ |
RESOLU *rp, |
349 |
+ |
double lx, |
350 |
+ |
double ly |
351 |
+ |
) |
352 |
+ |
{ |
353 |
+ |
int x, y; |
354 |
+ |
|
355 |
+ |
x = (int)(lx*rp->xr + .5 - (lx < 0.0)); |
356 |
+ |
y = (int)(ly*rp->yr + .5 - (ly < 0.0)); |
357 |
+ |
|
358 |
+ |
if (rp->rt & XDECR) |
359 |
+ |
x = rp->xr-1 - x; |
360 |
+ |
if (rp->rt & YDECR) |
361 |
+ |
y = rp->yr-1 - y; |
362 |
+ |
if (rp->rt & YMAJOR) { |
363 |
+ |
pp[0] = x; |
364 |
+ |
pp[1] = y; |
365 |
+ |
} else { |
366 |
+ |
pp[0] = y; |
367 |
+ |
pp[1] = x; |
368 |
+ |
} |
369 |
+ |
} |
370 |
+ |
|
371 |
+ |
|
372 |
|
int |
373 |
< |
getviewopt(v, ac, av) /* process view argument */ |
374 |
< |
register VIEW *v; |
375 |
< |
int ac; |
376 |
< |
register char *av[]; |
373 |
> |
getviewopt( /* process view argument */ |
374 |
> |
VIEW *v, |
375 |
> |
int ac, |
376 |
> |
char *av[] |
377 |
> |
) |
378 |
|
{ |
379 |
< |
#define check(c,n) if ((av[0][c]&&av[0][c]!=' ') || n>=ac) return(-1) |
380 |
< |
extern double atof(); |
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); |
385 |
|
case 't': /* type */ |
386 |
|
if (!av[0][3] || av[0][3]==' ') |
387 |
|
return(-1); |
388 |
< |
check(4,0); |
388 |
> |
check(4,""); |
389 |
|
v->type = av[0][3]; |
390 |
|
return(0); |
391 |
|
case 'p': /* point */ |
392 |
< |
check(3,3); |
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(3,3); |
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(3,3); |
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(3,1); |
411 |
> |
check(3,"f"); |
412 |
|
v->horiz = atof(av[1]); |
413 |
|
return(1); |
414 |
|
case 'v': /* vertical size */ |
415 |
< |
check(3,1); |
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(3,1); |
427 |
> |
check(3,"f"); |
428 |
|
v->hoff = atof(av[1]); |
429 |
|
return(1); |
430 |
|
case 'l': /* lift */ |
431 |
< |
check(3,1); |
431 |
> |
check(3,"f"); |
432 |
|
v->voff = atof(av[1]); |
433 |
|
return(1); |
434 |
|
default: |
439 |
|
|
440 |
|
|
441 |
|
int |
442 |
< |
sscanview(vp, s) /* get view parameters from string */ |
443 |
< |
VIEW *vp; |
444 |
< |
register char *s; |
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 (*s == ' ') |
453 |
< |
s++; |
452 |
> |
while (isspace(*s)) |
453 |
> |
if (!*s++) |
454 |
> |
return(0); |
455 |
|
while (*s) { |
456 |
|
ac = 0; |
457 |
|
do { |
458 |
< |
av[ac++] = s; |
459 |
< |
while (*s && *s != ' ') |
458 |
> |
if (ac || *s == '-') |
459 |
> |
av[ac++] = s; |
460 |
> |
while (*s && !isspace(*s)) |
461 |
|
s++; |
462 |
< |
while (*s == ' ') |
462 |
> |
while (isspace(*s)) |
463 |
|
s++; |
464 |
|
} while (*s && ac < 4); |
465 |
|
if ((na = getviewopt(vp, ac, av)) >= 0) { |
473 |
|
} |
474 |
|
|
475 |
|
|
476 |
< |
fprintview(vp, fp) /* write out view parameters */ |
477 |
< |
register VIEW *vp; |
478 |
< |
FILE *fp; |
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->vdir[1], vp->vdir[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 |
< |
static char *altname[] = {NULL,"rpict","rview","pinterp",VIEWSTR,NULL}; |
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 |
589 |
< |
gethview(s, v) /* get view from header */ |
590 |
< |
char *s; |
591 |
< |
register struct myview *v; |
588 |
> |
static int |
589 |
> |
gethview( /* get view from header */ |
590 |
> |
char *s, |
591 |
> |
void *v |
592 |
> |
) |
593 |
|
{ |
594 |
< |
register char **an; |
595 |
< |
|
596 |
< |
for (an = altname; *an != NULL; an++) |
351 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
352 |
< |
if (sscanview(v->hv, s+strlen(*an)) > 0) |
353 |
< |
v->ok++; |
354 |
< |
return; |
355 |
< |
} |
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(fname, vp, xp, yp) /* get view from file */ |
602 |
< |
char *fname; |
603 |
< |
VIEW *vp; |
604 |
< |
int *xp, *yp; |
601 |
> |
viewfile( /* get view from file */ |
602 |
> |
char *fname, |
603 |
> |
VIEW *vp, |
604 |
> |
RESOLU *rp |
605 |
> |
) |
606 |
|
{ |
365 |
– |
extern char *progname; |
607 |
|
struct myview mvs; |
608 |
|
FILE *fp; |
609 |
|
|
610 |
< |
if ((fp = fopen(fname, "r")) == NULL) |
610 |
> |
if (fname == NULL || !strcmp(fname, "-")) |
611 |
> |
fp = stdin; |
612 |
> |
else if ((fp = fopen(fname, "r")) == NULL) |
613 |
|
return(-1); |
614 |
|
|
372 |
– |
altname[0] = progname; |
615 |
|
mvs.hv = vp; |
616 |
|
mvs.ok = 0; |
617 |
|
|
618 |
|
getheader(fp, gethview, &mvs); |
619 |
|
|
620 |
< |
if (xp != NULL && yp != NULL |
379 |
< |
&& fgetresolu(xp, yp, fp) == -1) |
620 |
> |
if (rp != NULL && !fgetsresolu(rp, fp)) |
621 |
|
mvs.ok = 0; |
622 |
|
|
623 |
|
fclose(fp); |