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/* Copyright (c) 1991 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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#include "resolu.h" |
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#define FEQ(x,y) (fabs((x)-(y)) <= FTINY) |
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#define VEQ(v,w) (FEQ((v)[0],(w)[0]) && FEQ((v)[1],(w)[1]) \ |
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&& FEQ((v)[2],(w)[2])) |
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|
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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->vfore < -FTINY) | (v->vaft < -FTINY) || |
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(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; |
88 |
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v->vn2 = v->vert / 90.0; |
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v->hn2 = v->horiz * (PI/180.0); |
88 |
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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; |
114 |
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v->hvec[2] *= v->hn2; |
111 |
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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; |
114 |
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v->hvec[1] *= v->hn2; |
115 |
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v->hvec[2] *= v->hn2; |
116 |
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} |
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v->vvec[0] *= v->vn2; |
118 |
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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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|
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|
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normaspect(va, ap, xp, yp) /* fix pixel aspect or resolution */ |
129 |
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double va; /* view aspect ratio */ |
130 |
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double *ap; /* pixel aspect in (or out if 0) */ |
131 |
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int *xp, *yp; /* x and y resolution in (or out if *ap!=0) */ |
128 |
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void |
129 |
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normaspect( /* fix pixel aspect or resolution */ |
130 |
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double va, /* view aspect ratio */ |
131 |
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double *ap, /* pixel aspect in (or out if 0) */ |
132 |
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int *xp, |
133 |
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int *yp /* x and y resolution in (or out if *ap!=0) */ |
134 |
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) |
135 |
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{ |
136 |
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if (*ap <= FTINY) |
137 |
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*ap = va * *xp / *yp; /* compute pixel aspect */ |
142 |
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} |
143 |
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|
144 |
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|
145 |
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viewray(orig, direc, v, x, y) /* compute ray origin and direction */ |
146 |
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FVECT orig, direc; |
147 |
< |
register VIEW *v; |
148 |
< |
double x, y; |
145 |
> |
double |
146 |
> |
viewray( /* compute ray origin and direction */ |
147 |
> |
FVECT orig, |
148 |
> |
FVECT direc, |
149 |
> |
VIEW *v, |
150 |
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double x, |
151 |
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double y |
152 |
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) |
153 |
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{ |
154 |
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double d, z; |
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|
158 |
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|
159 |
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switch(v->type) { |
160 |
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case VT_PAR: /* parallel view */ |
161 |
< |
orig[0] = v->vp[0] + x*v->hvec[0] + y*v->vvec[0]; |
162 |
< |
orig[1] = v->vp[1] + x*v->hvec[1] + y*v->vvec[1]; |
163 |
< |
orig[2] = v->vp[2] + x*v->hvec[2] + y*v->vvec[2]; |
161 |
> |
orig[0] = v->vp[0] + v->vfore*v->vdir[0] |
162 |
> |
+ x*v->hvec[0] + y*v->vvec[0]; |
163 |
> |
orig[1] = v->vp[1] + v->vfore*v->vdir[1] |
164 |
> |
+ x*v->hvec[1] + y*v->vvec[1]; |
165 |
> |
orig[2] = v->vp[2] + v->vfore*v->vdir[2] |
166 |
> |
+ x*v->hvec[2] + y*v->vvec[2]; |
167 |
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VCOPY(direc, v->vdir); |
168 |
< |
return(0); |
168 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
169 |
|
case VT_PER: /* perspective view */ |
126 |
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VCOPY(orig, v->vp); |
170 |
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direc[0] = v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
171 |
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direc[1] = v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
172 |
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direc[2] = v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
173 |
< |
normalize(direc); |
174 |
< |
return(0); |
173 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
174 |
> |
d = normalize(direc); |
175 |
> |
return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
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case VT_HEM: /* hemispherical fisheye */ |
177 |
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z = 1.0 - x*x*v->hn2 - y*y*v->vn2; |
178 |
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if (z < 0.0) |
179 |
< |
return(-1); |
179 |
> |
return(-1.0); |
180 |
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z = sqrt(z); |
137 |
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VCOPY(orig, v->vp); |
181 |
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
182 |
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
183 |
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
184 |
< |
return(0); |
184 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
185 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
186 |
> |
case VT_CYL: /* cylindrical panorama */ |
187 |
> |
d = x * v->horiz * (PI/180.0); |
188 |
> |
z = cos(d); |
189 |
> |
x = sin(d); |
190 |
> |
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
191 |
> |
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
192 |
> |
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
193 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
194 |
> |
d = normalize(direc); |
195 |
> |
return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
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case VT_ANG: /* angular fisheye */ |
197 |
< |
x *= v->horiz/180.0; |
198 |
< |
y *= v->vert/180.0; |
197 |
> |
x *= (1.0/180.0)*v->horiz; |
198 |
> |
y *= (1.0/180.0)*v->vert; |
199 |
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d = x*x + y*y; |
200 |
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if (d > 1.0) |
201 |
< |
return(-1); |
148 |
< |
VCOPY(orig, v->vp); |
149 |
< |
if (d <= FTINY) { |
150 |
< |
VCOPY(direc, v->vdir); |
151 |
< |
return(0); |
152 |
< |
} |
201 |
> |
return(-1.0); |
202 |
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d = sqrt(d); |
203 |
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z = cos(PI*d); |
204 |
< |
d = sqrt(1 - z*z)/d; |
204 |
> |
d = d <= FTINY ? PI : sqrt(1.0 - z*z)/d; |
205 |
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x *= d; |
206 |
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y *= d; |
207 |
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
208 |
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
209 |
|
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
210 |
< |
return(0); |
210 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
211 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
212 |
> |
case VT_PLS: /* planispheric fisheye */ |
213 |
> |
x *= sqrt(v->hn2); |
214 |
> |
y *= sqrt(v->vn2); |
215 |
> |
d = x*x + y*y; |
216 |
> |
z = (1. - d)/(1. + d); |
217 |
> |
x *= (1. + z); |
218 |
> |
y *= (1. + z); |
219 |
> |
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
220 |
> |
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
221 |
> |
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
222 |
> |
VSUM(orig, v->vp, direc, v->vfore); |
223 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
224 |
|
} |
225 |
< |
return(-1); |
225 |
> |
return(-1.0); |
226 |
|
} |
227 |
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|
228 |
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|
229 |
< |
viewloc(ip, v, p) /* find image location for point */ |
230 |
< |
FVECT ip; |
231 |
< |
register VIEW *v; |
232 |
< |
FVECT p; |
229 |
> |
int |
230 |
> |
viewloc( /* find image location for point */ |
231 |
> |
FVECT ip, |
232 |
> |
VIEW *v, |
233 |
> |
FVECT p |
234 |
> |
) /* returns: Good=1, Bad=0, Behind=-1, OutOfFrame=2, Behind+OOF=-2 */ |
235 |
|
{ |
236 |
< |
double d; |
236 |
> |
double d, d2; |
237 |
|
FVECT disp; |
238 |
|
|
239 |
< |
disp[0] = p[0] - v->vp[0]; |
176 |
< |
disp[1] = p[1] - v->vp[1]; |
177 |
< |
disp[2] = p[2] - v->vp[2]; |
239 |
> |
VSUB(disp, p, v->vp); |
240 |
|
|
241 |
|
switch (v->type) { |
242 |
|
case VT_PAR: /* parallel view */ |
243 |
< |
ip[2] = DOT(disp,v->vdir); |
243 |
> |
ip[2] = DOT(disp,v->vdir) - v->vfore; |
244 |
|
break; |
245 |
|
case VT_PER: /* perspective view */ |
246 |
|
d = DOT(disp,v->vdir); |
247 |
< |
ip[2] = sqrt(DOT(disp,disp)); |
248 |
< |
if (d < 0.0) { /* fold pyramid */ |
247 |
> |
ip[2] = VLEN(disp); |
248 |
> |
if (d < -FTINY) { /* fold pyramid */ |
249 |
|
ip[2] = -ip[2]; |
250 |
|
d = -d; |
251 |
< |
} else if (d > FTINY) { |
252 |
< |
d = 1.0/d; |
253 |
< |
disp[0] *= d; |
254 |
< |
disp[1] *= d; |
255 |
< |
disp[2] *= d; |
256 |
< |
} |
251 |
> |
} else if (d <= FTINY) |
252 |
> |
return(0); /* at infinite edge */ |
253 |
> |
d = 1.0/d; |
254 |
> |
disp[0] *= d; |
255 |
> |
disp[1] *= d; |
256 |
> |
disp[2] *= d; |
257 |
> |
if (ip[2] < 0.0) d = -d; |
258 |
> |
ip[2] *= (1.0 - v->vfore*d); |
259 |
|
break; |
260 |
|
case VT_HEM: /* hemispherical fisheye */ |
261 |
|
d = normalize(disp); |
263 |
|
ip[2] = -d; |
264 |
|
else |
265 |
|
ip[2] = d; |
266 |
+ |
ip[2] -= v->vfore; |
267 |
|
break; |
268 |
+ |
case VT_CYL: /* cylindrical panorama */ |
269 |
+ |
d = DOT(disp,v->hvec); |
270 |
+ |
d2 = DOT(disp,v->vdir); |
271 |
+ |
ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
272 |
+ |
d = d*d + d2*d2; |
273 |
+ |
if (d <= FTINY*FTINY) |
274 |
+ |
return(0); /* at pole */ |
275 |
+ |
d = 1.0/sqrt(d); |
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 |
+ |
goto gotall; |
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); |
283 |
> |
ip[2] = normalize(disp) - v->vfore; |
284 |
|
d = DOT(disp,v->vdir); |
285 |
|
if (d >= 1.0-FTINY) |
286 |
< |
return; |
286 |
> |
goto gotall; |
287 |
|
if (d <= -(1.0-FTINY)) { |
288 |
< |
ip[1] += 180.0/v->horiz; |
289 |
< |
ip[2] += 180.0/v->vert; |
213 |
< |
return; |
288 |
> |
ip[0] += 180.0/v->horiz; |
289 |
> |
goto gotall; |
290 |
|
} |
291 |
< |
d = acos(d)/PI / sqrt(1.0 - d*d); |
292 |
< |
ip[0] += DOT(disp,v->hvec)*d*180.0/v->horiz; |
293 |
< |
ip[1] += DOT(disp,v->vvec)*d*180.0/v->vert; |
294 |
< |
return; |
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 |
> |
goto gotall; |
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 |
> |
goto gotall; |
302 |
> |
if (d <= -(1.0-FTINY)) |
303 |
> |
return(0); |
304 |
> |
ip[0] += DOT(disp,v->hvec)/((1. + d)*sqrt(v->hn2)); |
305 |
> |
ip[1] += DOT(disp,v->vvec)/((1. + d)*sqrt(v->vn2)); |
306 |
> |
goto gotall; |
307 |
|
} |
308 |
|
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
309 |
|
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
310 |
+ |
gotall: /* compute return value */ |
311 |
+ |
return( (1 - 2*(ip[2] <= 0.0)) * (1 + |
312 |
+ |
((0.0 >= ip[0]) | (ip[0] >= 1.0) | (0.0 >= ip[1]) | (ip[1] >= 1.0))) ); |
313 |
|
} |
314 |
|
|
315 |
|
|
316 |
< |
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
317 |
< |
FLOAT loc[2]; |
318 |
< |
register RESOLU *rp; |
319 |
< |
int px, py; |
316 |
> |
void |
317 |
> |
pix2loc( /* compute image location from pixel pos. */ |
318 |
> |
RREAL loc[2], |
319 |
> |
RESOLU *rp, |
320 |
> |
int px, |
321 |
> |
int py |
322 |
> |
) |
323 |
|
{ |
324 |
< |
register int x, y; |
324 |
> |
int x, y; |
325 |
|
|
326 |
< |
if (rp->or & YMAJOR) { |
326 |
> |
if (rp->rt & YMAJOR) { |
327 |
|
x = px; |
328 |
|
y = py; |
329 |
|
} else { |
330 |
|
x = py; |
331 |
|
y = px; |
332 |
|
} |
333 |
< |
if (rp->or & XDECR) |
333 |
> |
if (rp->rt & XDECR) |
334 |
|
x = rp->xr-1 - x; |
335 |
< |
if (rp->or & YDECR) |
335 |
> |
if (rp->rt & YDECR) |
336 |
|
y = rp->yr-1 - y; |
337 |
|
loc[0] = (x+.5)/rp->xr; |
338 |
|
loc[1] = (y+.5)/rp->yr; |
339 |
|
} |
340 |
|
|
341 |
|
|
342 |
< |
loc2pix(pp, rp, lx, ly) /* compute pixel pos. from image location */ |
343 |
< |
int pp[2]; |
344 |
< |
register RESOLU *rp; |
345 |
< |
double lx, ly; |
342 |
> |
void |
343 |
> |
loc2pix( /* compute pixel pos. from image location */ |
344 |
> |
int pp[2], |
345 |
> |
RESOLU *rp, |
346 |
> |
double lx, |
347 |
> |
double ly |
348 |
> |
) |
349 |
|
{ |
350 |
< |
register int x, y; |
350 |
> |
int x, y; |
351 |
|
|
352 |
< |
x = lx * rp->xr; |
353 |
< |
y = ly * rp->yr; |
354 |
< |
if (rp->or & XDECR) |
352 |
> |
x = (int)(lx*rp->xr + .5 - (lx < 0.0)); |
353 |
> |
y = (int)(ly*rp->yr + .5 - (ly < 0.0)); |
354 |
> |
|
355 |
> |
if (rp->rt & XDECR) |
356 |
|
x = rp->xr-1 - x; |
357 |
< |
if (rp->or & YDECR) |
357 |
> |
if (rp->rt & YDECR) |
358 |
|
y = rp->yr-1 - y; |
359 |
< |
if (rp->or & YMAJOR) { |
359 |
> |
if (rp->rt & YMAJOR) { |
360 |
|
pp[0] = x; |
361 |
|
pp[1] = y; |
362 |
|
} else { |
367 |
|
|
368 |
|
|
369 |
|
int |
370 |
< |
getviewopt(v, ac, av) /* process view argument */ |
371 |
< |
register VIEW *v; |
372 |
< |
int ac; |
373 |
< |
register char *av[]; |
370 |
> |
getviewopt( /* process view argument */ |
371 |
> |
VIEW *v, |
372 |
> |
int ac, |
373 |
> |
char *av[] |
374 |
> |
) |
375 |
|
{ |
376 |
|
#define check(c,l) if ((av[0][c]&&av[0][c]!=' ') || \ |
377 |
|
badarg(ac-1,av+1,l)) return(-1) |
396 |
|
v->vdir[0] = atof(av[1]); |
397 |
|
v->vdir[1] = atof(av[2]); |
398 |
|
v->vdir[2] = atof(av[3]); |
399 |
+ |
v->vdist = 1.; |
400 |
|
return(3); |
401 |
|
case 'u': /* up */ |
402 |
|
check(3,"fff"); |
412 |
|
check(3,"f"); |
413 |
|
v->vert = atof(av[1]); |
414 |
|
return(1); |
415 |
+ |
case 'o': /* fore clipping plane */ |
416 |
+ |
check(3,"f"); |
417 |
+ |
v->vfore = atof(av[1]); |
418 |
+ |
return(1); |
419 |
+ |
case 'a': /* aft clipping plane */ |
420 |
+ |
check(3,"f"); |
421 |
+ |
v->vaft = atof(av[1]); |
422 |
+ |
return(1); |
423 |
|
case 's': /* shift */ |
424 |
|
check(3,"f"); |
425 |
|
v->hoff = atof(av[1]); |
436 |
|
|
437 |
|
|
438 |
|
int |
439 |
< |
sscanview(vp, s) /* get view parameters from string */ |
440 |
< |
VIEW *vp; |
441 |
< |
register char *s; |
439 |
> |
sscanview( /* get view parameters from string */ |
440 |
> |
VIEW *vp, |
441 |
> |
char *s |
442 |
> |
) |
443 |
|
{ |
444 |
|
int ac; |
445 |
|
char *av[4]; |
446 |
|
int na; |
447 |
|
int nvopts = 0; |
448 |
|
|
449 |
< |
while (*s == ' ') |
450 |
< |
s++; |
449 |
> |
while (isspace(*s)) |
450 |
> |
if (!*s++) |
451 |
> |
return(0); |
452 |
|
while (*s) { |
453 |
|
ac = 0; |
454 |
|
do { |
455 |
< |
av[ac++] = s; |
456 |
< |
while (*s && *s != ' ') |
455 |
> |
if (ac || *s == '-') |
456 |
> |
av[ac++] = s; |
457 |
> |
while (*s && !isspace(*s)) |
458 |
|
s++; |
459 |
< |
while (*s == ' ') |
459 |
> |
while (isspace(*s)) |
460 |
|
s++; |
461 |
|
} while (*s && ac < 4); |
462 |
|
if ((na = getviewopt(vp, ac, av)) >= 0) { |
470 |
|
} |
471 |
|
|
472 |
|
|
473 |
< |
fprintview(vp, fp) /* write out view parameters */ |
474 |
< |
register VIEW *vp; |
475 |
< |
FILE *fp; |
473 |
> |
void |
474 |
> |
fprintview( /* write out view parameters */ |
475 |
> |
VIEW *vp, |
476 |
> |
FILE *fp |
477 |
> |
) |
478 |
|
{ |
479 |
|
fprintf(fp, " -vt%c", vp->type); |
480 |
|
fprintf(fp, " -vp %.6g %.6g %.6g", vp->vp[0], vp->vp[1], vp->vp[2]); |
481 |
< |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
481 |
> |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0]*vp->vdist, |
482 |
> |
vp->vdir[1]*vp->vdist, |
483 |
> |
vp->vdir[2]*vp->vdist); |
484 |
|
fprintf(fp, " -vu %.6g %.6g %.6g", vp->vup[0], vp->vup[1], vp->vup[2]); |
485 |
|
fprintf(fp, " -vh %.6g -vv %.6g", vp->horiz, vp->vert); |
486 |
+ |
fprintf(fp, " -vo %.6g -va %.6g", vp->vfore, vp->vaft); |
487 |
|
fprintf(fp, " -vs %.6g -vl %.6g", vp->hoff, vp->voff); |
488 |
|
} |
489 |
|
|
490 |
|
|
491 |
< |
static char *altname[] = {NULL,"rpict","rview","pinterp",VIEWSTR,NULL}; |
491 |
> |
char * |
492 |
> |
viewopt( /* translate to minimal view string */ |
493 |
> |
VIEW *vp |
494 |
> |
) |
495 |
> |
{ |
496 |
> |
static char vwstr[128]; |
497 |
> |
char *cp = vwstr; |
498 |
|
|
499 |
+ |
*cp = '\0'; |
500 |
+ |
if (vp->type != stdview.type) { |
501 |
+ |
sprintf(cp, " -vt%c", vp->type); |
502 |
+ |
cp += strlen(cp); |
503 |
+ |
} |
504 |
+ |
if (!VEQ(vp->vp,stdview.vp)) { |
505 |
+ |
sprintf(cp, " -vp %.6g %.6g %.6g", |
506 |
+ |
vp->vp[0], vp->vp[1], vp->vp[2]); |
507 |
+ |
cp += strlen(cp); |
508 |
+ |
} |
509 |
+ |
if (!FEQ(vp->vdist,stdview.vdist) || !VEQ(vp->vdir,stdview.vdir)) { |
510 |
+ |
sprintf(cp, " -vd %.6g %.6g %.6g", |
511 |
+ |
vp->vdir[0]*vp->vdist, |
512 |
+ |
vp->vdir[1]*vp->vdist, |
513 |
+ |
vp->vdir[2]*vp->vdist); |
514 |
+ |
cp += strlen(cp); |
515 |
+ |
} |
516 |
+ |
if (!VEQ(vp->vup,stdview.vup)) { |
517 |
+ |
sprintf(cp, " -vu %.6g %.6g %.6g", |
518 |
+ |
vp->vup[0], vp->vup[1], vp->vup[2]); |
519 |
+ |
cp += strlen(cp); |
520 |
+ |
} |
521 |
+ |
if (!FEQ(vp->horiz,stdview.horiz)) { |
522 |
+ |
sprintf(cp, " -vh %.6g", vp->horiz); |
523 |
+ |
cp += strlen(cp); |
524 |
+ |
} |
525 |
+ |
if (!FEQ(vp->vert,stdview.vert)) { |
526 |
+ |
sprintf(cp, " -vv %.6g", vp->vert); |
527 |
+ |
cp += strlen(cp); |
528 |
+ |
} |
529 |
+ |
if (!FEQ(vp->vfore,stdview.vfore)) { |
530 |
+ |
sprintf(cp, " -vo %.6g", vp->vfore); |
531 |
+ |
cp += strlen(cp); |
532 |
+ |
} |
533 |
+ |
if (!FEQ(vp->vaft,stdview.vaft)) { |
534 |
+ |
sprintf(cp, " -va %.6g", vp->vaft); |
535 |
+ |
cp += strlen(cp); |
536 |
+ |
} |
537 |
+ |
if (!FEQ(vp->hoff,stdview.hoff)) { |
538 |
+ |
sprintf(cp, " -vs %.6g", vp->hoff); |
539 |
+ |
cp += strlen(cp); |
540 |
+ |
} |
541 |
+ |
if (!FEQ(vp->voff,stdview.voff)) { |
542 |
+ |
sprintf(cp, " -vl %.6g", vp->voff); |
543 |
+ |
cp += strlen(cp); |
544 |
+ |
} |
545 |
+ |
return(vwstr); |
546 |
+ |
} |
547 |
+ |
|
548 |
+ |
|
549 |
+ |
int |
550 |
+ |
isview( /* is this a view string? */ |
551 |
+ |
char *s |
552 |
+ |
) |
553 |
+ |
{ |
554 |
+ |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","rvu","rpiece","pinterp",NULL}; |
555 |
+ |
extern char *progname; |
556 |
+ |
char *cp; |
557 |
+ |
char **an; |
558 |
+ |
/* add program name to list */ |
559 |
+ |
if (altname[0] == NULL) { |
560 |
+ |
for (cp = progname; *cp; cp++) |
561 |
+ |
; |
562 |
+ |
while (cp > progname && !ISDIRSEP(cp[-1])) |
563 |
+ |
cp--; |
564 |
+ |
altname[0] = cp; |
565 |
+ |
} |
566 |
+ |
/* skip leading path */ |
567 |
+ |
cp = s; |
568 |
+ |
while (*cp && *cp != ' ') |
569 |
+ |
cp++; |
570 |
+ |
while (cp > s && !ISDIRSEP(cp[-1])) |
571 |
+ |
cp--; |
572 |
+ |
for (an = altname; *an != NULL; an++) |
573 |
+ |
if (!strncmp(*an, cp, strlen(*an))) |
574 |
+ |
return(1); |
575 |
+ |
return(0); |
576 |
+ |
} |
577 |
+ |
|
578 |
+ |
|
579 |
|
struct myview { |
580 |
|
VIEW *hv; |
581 |
|
int ok; |
582 |
|
}; |
583 |
|
|
584 |
|
|
585 |
< |
static |
586 |
< |
gethview(s, v) /* get view from header */ |
587 |
< |
char *s; |
588 |
< |
register struct myview *v; |
585 |
> |
static int |
586 |
> |
gethview( /* get view from header */ |
587 |
> |
char *s, |
588 |
> |
void *v |
589 |
> |
) |
590 |
|
{ |
591 |
< |
register char **an; |
592 |
< |
|
593 |
< |
for (an = altname; *an != NULL; an++) |
391 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
392 |
< |
if (sscanview(v->hv, s+strlen(*an)) > 0) |
393 |
< |
v->ok++; |
394 |
< |
return; |
395 |
< |
} |
591 |
> |
if (isview(s) && sscanview(((struct myview*)v)->hv, s) > 0) |
592 |
> |
((struct myview*)v)->ok++; |
593 |
> |
return(0); |
594 |
|
} |
595 |
|
|
596 |
|
|
597 |
|
int |
598 |
< |
viewfile(fname, vp, rp) /* get view from file */ |
599 |
< |
char *fname; |
600 |
< |
VIEW *vp; |
601 |
< |
RESOLU *rp; |
598 |
> |
viewfile( /* get view from file */ |
599 |
> |
char *fname, |
600 |
> |
VIEW *vp, |
601 |
> |
RESOLU *rp |
602 |
> |
) |
603 |
|
{ |
405 |
– |
extern char *progname; |
604 |
|
struct myview mvs; |
605 |
|
FILE *fp; |
606 |
|
|
607 |
< |
if ((fp = fopen(fname, "r")) == NULL) |
607 |
> |
if (fname == NULL || !strcmp(fname, "-")) |
608 |
> |
fp = stdin; |
609 |
> |
else if ((fp = fopen(fname, "r")) == NULL) |
610 |
|
return(-1); |
611 |
|
|
412 |
– |
altname[0] = progname; |
612 |
|
mvs.hv = vp; |
613 |
|
mvs.ok = 0; |
614 |
|
|