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/* Copyright (c) 1986 Regents of the University of California */ |
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|
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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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/* |
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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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|
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#include <ctype.h> |
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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#include "standard.h" |
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|
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#include "view.h" |
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|
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VIEW stdview = STDVIEW(512); /* default view parameters */ |
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#include "paths.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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|
77 |
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char * |
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sskip(s) /* skip a word */ |
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register char *s; |
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{ |
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while (isspace(*s)) s++; |
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while (*s && !isspace(*s)) s++; |
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return(s); |
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} |
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VIEW stdview = STDVIEW; /* default view parameters */ |
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|
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|
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char * |
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setview(v) /* set vhinc and vvinc, return message on error */ |
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setview(v) /* set hvec and vvec, return message on error */ |
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register VIEW *v; |
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{ |
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double tan(), dt; |
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static char ill_horiz[] = "illegal horizontal view size"; |
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static char ill_vert[] = "illegal vertical view size"; |
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|
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if (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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return("zero view direction"); |
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|
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fcross(v->vhinc, v->vdir, v->vup); /* compute horiz dir */ |
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|
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if (normalize(v->vhinc) == 0.0) |
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return("illegal view up vector"); |
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|
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fcross(v->vvinc, v->vhinc, v->vdir); /* compute vert dir */ |
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if (normalize(v->vup) == 0.0) /* normalize view up */ |
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return("zero view up vector"); |
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|
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if (v->type == VT_PAR) |
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dt = v->horiz; |
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else if (v->type == VT_PER) |
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dt = 2.0 * tan(v->horiz*(PI/180.0/2.0)); |
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else |
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return("unknown view type"); |
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fcross(v->hvec, v->vdir, v->vup); /* compute horiz dir */ |
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|
98 |
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if (dt <= FTINY || dt >= FHUGE) |
99 |
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return("illegal horizontal view size"); |
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if (normalize(v->hvec) == 0.0) |
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return("view up parallel to view direction"); |
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|
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if (v->hresolu <= 0) |
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return("illegal horizontal resolution"); |
101 |
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fcross(v->vvec, v->hvec, v->vdir); /* compute vert dir */ |
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|
103 |
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dt /= (double)v->hresolu; |
104 |
< |
v->vhinc[0] *= dt; |
105 |
< |
v->vhinc[1] *= dt; |
106 |
< |
v->vhinc[2] *= dt; |
103 |
> |
if (v->horiz <= FTINY) |
104 |
> |
return(ill_horiz); |
105 |
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if (v->vert <= FTINY) |
106 |
> |
return(ill_vert); |
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|
108 |
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if (v->type == VT_PAR) |
109 |
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dt = v->vert; |
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else |
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dt = 2.0 * tan(v->vert*(PI/180.0/2.0)); |
108 |
> |
switch (v->type) { |
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case VT_PAR: /* parallel view */ |
110 |
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v->hn2 = v->horiz; |
111 |
> |
v->vn2 = v->vert; |
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> |
break; |
113 |
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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) |
117 |
> |
return(ill_vert); |
118 |
> |
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)); |
120 |
> |
break; |
121 |
> |
case VT_CYL: /* cylindrical panorama */ |
122 |
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if (v->horiz > 360.0+FTINY) |
123 |
> |
return(ill_horiz); |
124 |
> |
if (v->vert >= 180.0-FTINY) |
125 |
> |
return(ill_vert); |
126 |
> |
v->hn2 = v->horiz * (PI/180.0); |
127 |
> |
v->vn2 = 2.0 * tan(v->vert*(PI/180.0/2.0)); |
128 |
> |
break; |
129 |
> |
case VT_ANG: /* angular fisheye */ |
130 |
> |
if (v->horiz > 360.0+FTINY) |
131 |
> |
return(ill_horiz); |
132 |
> |
if (v->vert > 360.0+FTINY) |
133 |
> |
return(ill_vert); |
134 |
> |
v->hn2 = v->horiz * (PI/180.0); |
135 |
> |
v->vn2 = v->vert * (PI/180.0); |
136 |
> |
break; |
137 |
> |
case VT_HEM: /* hemispherical fisheye */ |
138 |
> |
if (v->horiz > 180.0+FTINY) |
139 |
> |
return(ill_horiz); |
140 |
> |
if (v->vert > 180.0+FTINY) |
141 |
> |
return(ill_vert); |
142 |
> |
v->hn2 = 2.0 * sin(v->horiz*(PI/180.0/2.0)); |
143 |
> |
v->vn2 = 2.0 * sin(v->vert*(PI/180.0/2.0)); |
144 |
> |
break; |
145 |
> |
default: |
146 |
> |
return("unknown view type"); |
147 |
> |
} |
148 |
> |
if (v->type != VT_ANG) { |
149 |
> |
if (v->type != VT_CYL) { |
150 |
> |
v->hvec[0] *= v->hn2; |
151 |
> |
v->hvec[1] *= v->hn2; |
152 |
> |
v->hvec[2] *= v->hn2; |
153 |
> |
} |
154 |
> |
v->vvec[0] *= v->vn2; |
155 |
> |
v->vvec[1] *= v->vn2; |
156 |
> |
v->vvec[2] *= v->vn2; |
157 |
> |
} |
158 |
> |
v->hn2 *= v->hn2; |
159 |
> |
v->vn2 *= v->vn2; |
160 |
|
|
161 |
< |
if (dt <= FTINY || dt >= FHUGE) |
162 |
< |
return("illegal vertical view size"); |
161 |
> |
return(NULL); |
162 |
> |
} |
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|
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if (v->vresolu <= 0) |
75 |
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return("illegal vertical resolution"); |
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|
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dt /= (double)v->vresolu; |
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v->vvinc[0] *= dt; |
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v->vvinc[1] *= dt; |
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v->vvinc[2] *= dt; |
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|
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< |
v->vhn2 = DOT(v->vhinc,v->vhinc); |
166 |
< |
v->vvn2 = DOT(v->vvinc,v->vvinc); |
167 |
< |
|
168 |
< |
return(NULL); |
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> |
void |
166 |
> |
normaspect(va, ap, xp, yp) /* fix pixel aspect or resolution */ |
167 |
> |
double va; /* view aspect ratio */ |
168 |
> |
double *ap; /* pixel aspect in (or out if 0) */ |
169 |
> |
int *xp, *yp; /* x and y resolution in (or out if *ap!=0) */ |
170 |
> |
{ |
171 |
> |
if (*ap <= FTINY) |
172 |
> |
*ap = va * *xp / *yp; /* compute pixel aspect */ |
173 |
> |
else if (va * *xp > *ap * *yp) |
174 |
> |
*xp = *yp / va * *ap + .5; /* reduce x resolution */ |
175 |
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else |
176 |
> |
*yp = *xp * va / *ap + .5; /* reduce y resolution */ |
177 |
|
} |
178 |
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|
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|
180 |
< |
rayview(orig, direc, v, x, y) /* compute ray origin and direction */ |
180 |
> |
double |
181 |
> |
viewray(orig, direc, v, x, y) /* compute ray origin and direction */ |
182 |
|
FVECT orig, direc; |
183 |
|
register VIEW *v; |
184 |
|
double x, y; |
185 |
|
{ |
186 |
< |
x -= 0.5 * v->hresolu; |
187 |
< |
y -= 0.5 * v->vresolu; |
186 |
> |
double d, z; |
187 |
> |
|
188 |
> |
x += v->hoff - 0.5; |
189 |
> |
y += v->voff - 0.5; |
190 |
|
|
191 |
< |
if (v->type == VT_PAR) { /* parallel view */ |
192 |
< |
orig[0] = v->vp[0] + x*v->vhinc[0] + y*v->vvinc[0]; |
193 |
< |
orig[1] = v->vp[1] + x*v->vhinc[1] + y*v->vvinc[1]; |
194 |
< |
orig[2] = v->vp[2] + x*v->vhinc[2] + y*v->vvinc[2]; |
191 |
> |
switch(v->type) { |
192 |
> |
case VT_PAR: /* parallel view */ |
193 |
> |
orig[0] = v->vp[0] + v->vfore*v->vdir[0] |
194 |
> |
+ x*v->hvec[0] + y*v->vvec[0]; |
195 |
> |
orig[1] = v->vp[1] + v->vfore*v->vdir[1] |
196 |
> |
+ x*v->hvec[1] + y*v->vvec[1]; |
197 |
> |
orig[2] = v->vp[2] + v->vfore*v->vdir[2] |
198 |
> |
+ x*v->hvec[2] + y*v->vvec[2]; |
199 |
|
VCOPY(direc, v->vdir); |
200 |
< |
} else { /* perspective view */ |
201 |
< |
VCOPY(orig, v->vp); |
202 |
< |
direc[0] = v->vdir[0] + x*v->vhinc[0] + y*v->vvinc[0]; |
203 |
< |
direc[1] = v->vdir[1] + x*v->vhinc[1] + y*v->vvinc[1]; |
204 |
< |
direc[2] = v->vdir[2] + x*v->vhinc[2] + y*v->vvinc[2]; |
205 |
< |
normalize(direc); |
200 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
201 |
> |
case VT_PER: /* perspective view */ |
202 |
> |
direc[0] = v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
203 |
> |
direc[1] = v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
204 |
> |
direc[2] = v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
205 |
> |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
206 |
> |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
207 |
> |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
208 |
> |
d = normalize(direc); |
209 |
> |
return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
210 |
> |
case VT_HEM: /* hemispherical fisheye */ |
211 |
> |
z = 1.0 - x*x*v->hn2 - y*y*v->vn2; |
212 |
> |
if (z < 0.0) |
213 |
> |
return(-1.0); |
214 |
> |
z = sqrt(z); |
215 |
> |
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
216 |
> |
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
217 |
> |
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
218 |
> |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
219 |
> |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
220 |
> |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
221 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
222 |
> |
case VT_CYL: /* cylindrical panorama */ |
223 |
> |
d = x * v->horiz * (PI/180.0); |
224 |
> |
z = cos(d); |
225 |
> |
x = sin(d); |
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 |
> |
d = normalize(direc); |
233 |
> |
return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
234 |
> |
case VT_ANG: /* angular fisheye */ |
235 |
> |
x *= v->horiz/180.0; |
236 |
> |
y *= v->vert/180.0; |
237 |
> |
d = x*x + y*y; |
238 |
> |
if (d > 1.0) |
239 |
> |
return(-1.0); |
240 |
> |
d = sqrt(d); |
241 |
> |
z = cos(PI*d); |
242 |
> |
d = d <= FTINY ? PI : sqrt(1 - z*z)/d; |
243 |
> |
x *= d; |
244 |
> |
y *= d; |
245 |
> |
direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
246 |
> |
direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
247 |
> |
direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
248 |
> |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
249 |
> |
orig[1] = v->vp[1] + v->vfore*direc[1]; |
250 |
> |
orig[2] = v->vp[2] + v->vfore*direc[2]; |
251 |
> |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
252 |
|
} |
253 |
+ |
return(-1.0); |
254 |
|
} |
255 |
|
|
256 |
|
|
257 |
< |
pixelview(xp, yp, zp, v, p) /* find image location for point */ |
258 |
< |
double *xp, *yp, *zp; |
257 |
> |
void |
258 |
> |
viewloc(ip, v, p) /* find image location for point */ |
259 |
> |
FVECT ip; |
260 |
|
register VIEW *v; |
261 |
|
FVECT p; |
262 |
|
{ |
263 |
< |
extern double sqrt(); |
118 |
< |
double d; |
263 |
> |
double d, d2; |
264 |
|
FVECT disp; |
265 |
< |
|
265 |
> |
|
266 |
|
disp[0] = p[0] - v->vp[0]; |
267 |
|
disp[1] = p[1] - v->vp[1]; |
268 |
|
disp[2] = p[2] - v->vp[2]; |
269 |
|
|
270 |
< |
if (v->type == VT_PAR) { /* parallel view */ |
271 |
< |
if (zp != NULL) |
272 |
< |
*zp = DOT(disp,v->vdir); |
273 |
< |
} else { /* perspective view */ |
274 |
< |
d = 1.0/DOT(disp,v->vdir); |
275 |
< |
if (zp != NULL) { |
276 |
< |
*zp = sqrt(DOT(disp,disp)); |
277 |
< |
if (d < 0.0) |
278 |
< |
*zp = -*zp; |
270 |
> |
switch (v->type) { |
271 |
> |
case VT_PAR: /* parallel view */ |
272 |
> |
ip[2] = DOT(disp,v->vdir) - v->vfore; |
273 |
> |
break; |
274 |
> |
case VT_PER: /* perspective view */ |
275 |
> |
d = DOT(disp,v->vdir); |
276 |
> |
ip[2] = VLEN(disp); |
277 |
> |
if (d < 0.0) { /* fold pyramid */ |
278 |
> |
ip[2] = -ip[2]; |
279 |
> |
d = -d; |
280 |
|
} |
281 |
< |
disp[0] *= d; |
282 |
< |
disp[1] *= d; |
283 |
< |
disp[2] *= d; |
281 |
> |
if (d > FTINY) { |
282 |
> |
d = 1.0/d; |
283 |
> |
disp[0] *= d; |
284 |
> |
disp[1] *= d; |
285 |
> |
disp[2] *= d; |
286 |
> |
} |
287 |
> |
ip[2] *= (1.0 - v->vfore*d); |
288 |
> |
break; |
289 |
> |
case VT_HEM: /* hemispherical fisheye */ |
290 |
> |
d = normalize(disp); |
291 |
> |
if (DOT(disp,v->vdir) < 0.0) |
292 |
> |
ip[2] = -d; |
293 |
> |
else |
294 |
> |
ip[2] = d; |
295 |
> |
ip[2] -= v->vfore; |
296 |
> |
break; |
297 |
> |
case VT_CYL: /* cylindrical panorama */ |
298 |
> |
d = DOT(disp,v->hvec); |
299 |
> |
d2 = DOT(disp,v->vdir); |
300 |
> |
ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
301 |
> |
d = 1.0/sqrt(d*d + d2*d2); |
302 |
> |
ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
303 |
> |
ip[2] = VLEN(disp); |
304 |
> |
ip[2] *= (1.0 - v->vfore*d); |
305 |
> |
return; |
306 |
> |
case VT_ANG: /* angular fisheye */ |
307 |
> |
ip[0] = 0.5 - v->hoff; |
308 |
> |
ip[1] = 0.5 - v->voff; |
309 |
> |
ip[2] = normalize(disp) - v->vfore; |
310 |
> |
d = DOT(disp,v->vdir); |
311 |
> |
if (d >= 1.0-FTINY) |
312 |
> |
return; |
313 |
> |
if (d <= -(1.0-FTINY)) { |
314 |
> |
ip[0] += 180.0/v->horiz; |
315 |
> |
return; |
316 |
> |
} |
317 |
> |
d = acos(d)/PI / sqrt(1.0 - d*d); |
318 |
> |
ip[0] += DOT(disp,v->hvec)*d*180.0/v->horiz; |
319 |
> |
ip[1] += DOT(disp,v->vvec)*d*180.0/v->vert; |
320 |
> |
return; |
321 |
|
} |
322 |
< |
*xp = DOT(disp,v->vhinc)/v->vhn2 + 0.5*v->hresolu; |
323 |
< |
*yp = DOT(disp,v->vvinc)/v->vvn2 + 0.5*v->vresolu; |
322 |
> |
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
323 |
> |
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
324 |
|
} |
325 |
|
|
326 |
|
|
327 |
< |
sscanview(vp, s) /* get view parameters */ |
328 |
< |
register VIEW *vp; |
327 |
> |
void |
328 |
> |
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
329 |
> |
FLOAT loc[2]; |
330 |
> |
register RESOLU *rp; |
331 |
> |
int px, py; |
332 |
> |
{ |
333 |
> |
register int x, y; |
334 |
> |
|
335 |
> |
if (rp->rt & YMAJOR) { |
336 |
> |
x = px; |
337 |
> |
y = py; |
338 |
> |
} else { |
339 |
> |
x = py; |
340 |
> |
y = px; |
341 |
> |
} |
342 |
> |
if (rp->rt & XDECR) |
343 |
> |
x = rp->xr-1 - x; |
344 |
> |
if (rp->rt & YDECR) |
345 |
> |
y = rp->yr-1 - y; |
346 |
> |
loc[0] = (x+.5)/rp->xr; |
347 |
> |
loc[1] = (y+.5)/rp->yr; |
348 |
> |
} |
349 |
> |
|
350 |
> |
|
351 |
> |
void |
352 |
> |
loc2pix(pp, rp, lx, ly) /* compute pixel pos. from image location */ |
353 |
> |
int pp[2]; |
354 |
> |
register RESOLU *rp; |
355 |
> |
double lx, ly; |
356 |
> |
{ |
357 |
> |
register int x, y; |
358 |
> |
|
359 |
> |
x = lx * rp->xr; |
360 |
> |
y = ly * rp->yr; |
361 |
> |
if (rp->rt & XDECR) |
362 |
> |
x = rp->xr-1 - x; |
363 |
> |
if (rp->rt & YDECR) |
364 |
> |
y = rp->yr-1 - y; |
365 |
> |
if (rp->rt & YMAJOR) { |
366 |
> |
pp[0] = x; |
367 |
> |
pp[1] = y; |
368 |
> |
} else { |
369 |
> |
pp[0] = y; |
370 |
> |
pp[1] = x; |
371 |
> |
} |
372 |
> |
} |
373 |
> |
|
374 |
> |
|
375 |
> |
int |
376 |
> |
getviewopt(v, ac, av) /* process view argument */ |
377 |
> |
register VIEW *v; |
378 |
> |
int ac; |
379 |
> |
register char *av[]; |
380 |
> |
{ |
381 |
> |
#define check(c,l) if ((av[0][c]&&av[0][c]!=' ') || \ |
382 |
> |
badarg(ac-1,av+1,l)) return(-1) |
383 |
> |
|
384 |
> |
if (ac <= 0 || av[0][0] != '-' || av[0][1] != 'v') |
385 |
> |
return(-1); |
386 |
> |
switch (av[0][2]) { |
387 |
> |
case 't': /* type */ |
388 |
> |
if (!av[0][3] || av[0][3]==' ') |
389 |
> |
return(-1); |
390 |
> |
check(4,""); |
391 |
> |
v->type = av[0][3]; |
392 |
> |
return(0); |
393 |
> |
case 'p': /* point */ |
394 |
> |
check(3,"fff"); |
395 |
> |
v->vp[0] = atof(av[1]); |
396 |
> |
v->vp[1] = atof(av[2]); |
397 |
> |
v->vp[2] = atof(av[3]); |
398 |
> |
return(3); |
399 |
> |
case 'd': /* direction */ |
400 |
> |
check(3,"fff"); |
401 |
> |
v->vdir[0] = atof(av[1]); |
402 |
> |
v->vdir[1] = atof(av[2]); |
403 |
> |
v->vdir[2] = atof(av[3]); |
404 |
> |
return(3); |
405 |
> |
case 'u': /* up */ |
406 |
> |
check(3,"fff"); |
407 |
> |
v->vup[0] = atof(av[1]); |
408 |
> |
v->vup[1] = atof(av[2]); |
409 |
> |
v->vup[2] = atof(av[3]); |
410 |
> |
return(3); |
411 |
> |
case 'h': /* horizontal size */ |
412 |
> |
check(3,"f"); |
413 |
> |
v->horiz = atof(av[1]); |
414 |
> |
return(1); |
415 |
> |
case 'v': /* vertical size */ |
416 |
> |
check(3,"f"); |
417 |
> |
v->vert = atof(av[1]); |
418 |
> |
return(1); |
419 |
> |
case 'o': /* fore clipping plane */ |
420 |
> |
check(3,"f"); |
421 |
> |
v->vfore = atof(av[1]); |
422 |
> |
return(1); |
423 |
> |
case 'a': /* aft clipping plane */ |
424 |
> |
check(3,"f"); |
425 |
> |
v->vaft = atof(av[1]); |
426 |
> |
return(1); |
427 |
> |
case 's': /* shift */ |
428 |
> |
check(3,"f"); |
429 |
> |
v->hoff = atof(av[1]); |
430 |
> |
return(1); |
431 |
> |
case 'l': /* lift */ |
432 |
> |
check(3,"f"); |
433 |
> |
v->voff = atof(av[1]); |
434 |
> |
return(1); |
435 |
> |
default: |
436 |
> |
return(-1); |
437 |
> |
} |
438 |
> |
#undef check |
439 |
> |
} |
440 |
> |
|
441 |
> |
|
442 |
> |
int |
443 |
> |
sscanview(vp, s) /* get view parameters from string */ |
444 |
> |
VIEW *vp; |
445 |
|
register char *s; |
446 |
|
{ |
447 |
< |
for ( ; ; ) |
448 |
< |
switch (*s++) { |
449 |
< |
case '\0': |
450 |
< |
case '\n': |
451 |
< |
return(0); |
452 |
< |
case '-': |
453 |
< |
switch (*s++) { |
454 |
< |
case '\0': |
455 |
< |
return(-1); |
456 |
< |
case 'x': |
457 |
< |
if (sscanf(s, "%d", &vp->hresolu) != 1) |
458 |
< |
return(-1); |
459 |
< |
s = sskip(s); |
460 |
< |
continue; |
461 |
< |
case 'y': |
462 |
< |
if (sscanf(s, "%d", &vp->vresolu) != 1) |
463 |
< |
return(-1); |
464 |
< |
s = sskip(s); |
465 |
< |
continue; |
466 |
< |
case 'v': |
467 |
< |
switch (*s++) { |
468 |
< |
case '\0': |
469 |
< |
return(-1); |
470 |
< |
case 't': |
172 |
< |
vp->type = *s++; |
173 |
< |
continue; |
174 |
< |
case 'p': |
175 |
< |
if (sscanf(s, "%lf %lf %lf", |
176 |
< |
&vp->vp[0], |
177 |
< |
&vp->vp[1], |
178 |
< |
&vp->vp[2]) != 3) |
179 |
< |
return(-1); |
180 |
< |
s = sskip(sskip(sskip(s))); |
181 |
< |
continue; |
182 |
< |
case 'd': |
183 |
< |
if (sscanf(s, "%lf %lf %lf", |
184 |
< |
&vp->vdir[0], |
185 |
< |
&vp->vdir[1], |
186 |
< |
&vp->vdir[2]) != 3) |
187 |
< |
return(-1); |
188 |
< |
s = sskip(sskip(sskip(s))); |
189 |
< |
continue; |
190 |
< |
case 'u': |
191 |
< |
if (sscanf(s, "%lf %lf %lf", |
192 |
< |
&vp->vup[0], |
193 |
< |
&vp->vup[1], |
194 |
< |
&vp->vup[2]) != 3) |
195 |
< |
return(-1); |
196 |
< |
s = sskip(sskip(sskip(s))); |
197 |
< |
continue; |
198 |
< |
case 'h': |
199 |
< |
if (sscanf(s, "%lf", |
200 |
< |
&vp->horiz) != 1) |
201 |
< |
return(-1); |
202 |
< |
s = sskip(s); |
203 |
< |
continue; |
204 |
< |
case 'v': |
205 |
< |
if (sscanf(s, "%lf", |
206 |
< |
&vp->vert) != 1) |
207 |
< |
return(-1); |
208 |
< |
s = sskip(s); |
209 |
< |
continue; |
210 |
< |
} |
211 |
< |
continue; |
212 |
< |
} |
213 |
< |
continue; |
214 |
< |
} |
447 |
> |
int ac; |
448 |
> |
char *av[4]; |
449 |
> |
int na; |
450 |
> |
int nvopts = 0; |
451 |
> |
|
452 |
> |
if (*s != '-') |
453 |
> |
s = sskip2(s,1); |
454 |
> |
while (*s) { |
455 |
> |
ac = 0; |
456 |
> |
do { |
457 |
> |
av[ac++] = s; |
458 |
> |
while (*s && *s != ' ') |
459 |
> |
s++; |
460 |
> |
while (*s == ' ') |
461 |
> |
s++; |
462 |
> |
} while (*s && ac < 4); |
463 |
> |
if ((na = getviewopt(vp, ac, av)) >= 0) { |
464 |
> |
if (na+1 < ac) |
465 |
> |
s = av[na+1]; |
466 |
> |
nvopts++; |
467 |
> |
} else if (ac > 1) |
468 |
> |
s = av[1]; |
469 |
> |
} |
470 |
> |
return(nvopts); |
471 |
|
} |
472 |
|
|
473 |
|
|
474 |
+ |
void |
475 |
|
fprintview(vp, fp) /* write out view parameters */ |
476 |
|
register VIEW *vp; |
477 |
|
FILE *fp; |
481 |
|
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
482 |
|
fprintf(fp, " -vu %.6g %.6g %.6g", vp->vup[0], vp->vup[1], vp->vup[2]); |
483 |
|
fprintf(fp, " -vh %.6g -vv %.6g", vp->horiz, vp->vert); |
484 |
< |
fprintf(fp, " -x %d -y %d", vp->hresolu, vp->vresolu); |
484 |
> |
fprintf(fp, " -vo %.6g -va %.6g", vp->vfore, vp->vaft); |
485 |
> |
fprintf(fp, " -vs %.6g -vl %.6g", vp->hoff, vp->voff); |
486 |
|
} |
487 |
|
|
488 |
|
|
489 |
< |
static VIEW *hview; /* view from header */ |
490 |
< |
static int gothview; /* success indicator */ |
491 |
< |
static char *altname[] = {NULL,"rpict","rview","pinterp",VIEWSTR,NULL}; |
489 |
> |
char * |
490 |
> |
viewopt(vp) /* translate to minimal view string */ |
491 |
> |
register VIEW *vp; |
492 |
> |
{ |
493 |
> |
static char vwstr[128]; |
494 |
> |
register char *cp = vwstr; |
495 |
|
|
496 |
+ |
if (vp->type != stdview.type) { |
497 |
+ |
sprintf(cp, " -vt%c", vp->type); |
498 |
+ |
cp += strlen(cp); |
499 |
+ |
} |
500 |
+ |
if (!VEQ(vp->vp,stdview.vp)) { |
501 |
+ |
sprintf(cp, " -vp %.6g %.6g %.6g", |
502 |
+ |
vp->vp[0], vp->vp[1], vp->vp[2]); |
503 |
+ |
cp += strlen(cp); |
504 |
+ |
} |
505 |
+ |
if (!VEQ(vp->vdir,stdview.vdir)) { |
506 |
+ |
sprintf(cp, " -vd %.6g %.6g %.6g", |
507 |
+ |
vp->vdir[0], vp->vdir[1], vp->vdir[2]); |
508 |
+ |
cp += strlen(cp); |
509 |
+ |
} |
510 |
+ |
if (!VEQ(vp->vup,stdview.vup)) { |
511 |
+ |
sprintf(cp, " -vu %.6g %.6g %.6g", |
512 |
+ |
vp->vup[0], vp->vup[1], vp->vup[2]); |
513 |
+ |
cp += strlen(cp); |
514 |
+ |
} |
515 |
+ |
if (!FEQ(vp->horiz,stdview.horiz)) { |
516 |
+ |
sprintf(cp, " -vh %.6g", vp->horiz); |
517 |
+ |
cp += strlen(cp); |
518 |
+ |
} |
519 |
+ |
if (!FEQ(vp->vert,stdview.vert)) { |
520 |
+ |
sprintf(cp, " -vv %.6g", vp->vert); |
521 |
+ |
cp += strlen(cp); |
522 |
+ |
} |
523 |
+ |
if (!FEQ(vp->vfore,stdview.vfore)) { |
524 |
+ |
sprintf(cp, " -vo %.6g", vp->vfore); |
525 |
+ |
cp += strlen(cp); |
526 |
+ |
} |
527 |
+ |
if (!FEQ(vp->vaft,stdview.vaft)) { |
528 |
+ |
sprintf(cp, " -va %.6g", vp->vaft); |
529 |
+ |
cp += strlen(cp); |
530 |
+ |
} |
531 |
+ |
if (!FEQ(vp->hoff,stdview.hoff)) { |
532 |
+ |
sprintf(cp, " -vs %.6g", vp->hoff); |
533 |
+ |
cp += strlen(cp); |
534 |
+ |
} |
535 |
+ |
if (!FEQ(vp->voff,stdview.voff)) { |
536 |
+ |
sprintf(cp, " -vl %.6g", vp->voff); |
537 |
+ |
cp += strlen(cp); |
538 |
+ |
} |
539 |
+ |
return(vwstr); |
540 |
+ |
} |
541 |
|
|
542 |
< |
static |
543 |
< |
gethview(s) /* get view from header */ |
542 |
> |
|
543 |
> |
int |
544 |
> |
isview(s) /* is this a view string? */ |
545 |
|
char *s; |
546 |
|
{ |
547 |
+ |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","pinterp",NULL}; |
548 |
+ |
extern char *progname; |
549 |
+ |
register char *cp; |
550 |
|
register char **an; |
551 |
< |
|
551 |
> |
/* add program name to list */ |
552 |
> |
if (altname[0] == NULL) { |
553 |
> |
for (cp = progname; *cp; cp++) |
554 |
> |
; |
555 |
> |
while (cp > progname && !ISDIRSEP(cp[-1])) |
556 |
> |
cp--; |
557 |
> |
altname[0] = cp; |
558 |
> |
} |
559 |
> |
/* skip leading path */ |
560 |
> |
cp = s; |
561 |
> |
while (*cp && *cp != ' ') |
562 |
> |
cp++; |
563 |
> |
while (cp > s && !ISDIRSEP(cp[-1])) |
564 |
> |
cp--; |
565 |
|
for (an = altname; *an != NULL; an++) |
566 |
< |
if (!strncmp(*an, s, strlen(*an))) { |
567 |
< |
if (sscanview(hview, s+strlen(*an)) == 0) |
568 |
< |
gothview++; |
246 |
< |
return; |
247 |
< |
} |
566 |
> |
if (!strncmp(*an, cp, strlen(*an))) |
567 |
> |
return(1); |
568 |
> |
return(0); |
569 |
|
} |
570 |
|
|
571 |
|
|
572 |
+ |
struct myview { |
573 |
+ |
VIEW *hv; |
574 |
+ |
int ok; |
575 |
+ |
}; |
576 |
+ |
|
577 |
+ |
|
578 |
+ |
static int |
579 |
+ |
gethview(s, v) /* get view from header */ |
580 |
+ |
char *s; |
581 |
+ |
register struct myview *v; |
582 |
+ |
{ |
583 |
+ |
if (isview(s) && sscanview(v->hv, s) > 0) |
584 |
+ |
v->ok++; |
585 |
+ |
return(0); |
586 |
+ |
} |
587 |
+ |
|
588 |
+ |
|
589 |
|
int |
590 |
< |
viewfile(fname, vp) /* get view from file */ |
590 |
> |
viewfile(fname, vp, rp) /* get view from file */ |
591 |
|
char *fname; |
592 |
|
VIEW *vp; |
593 |
+ |
RESOLU *rp; |
594 |
|
{ |
595 |
< |
extern char *progname; |
595 |
> |
struct myview mvs; |
596 |
|
FILE *fp; |
597 |
|
|
598 |
< |
if ((fp = fopen(fname, "r")) == NULL) |
598 |
> |
if (fname == NULL || !strcmp(fname, "-")) |
599 |
> |
fp = stdin; |
600 |
> |
else if ((fp = fopen(fname, "r")) == NULL) |
601 |
|
return(-1); |
602 |
|
|
603 |
< |
altname[0] = progname; |
604 |
< |
hview = vp; |
264 |
< |
gothview = 0; |
603 |
> |
mvs.hv = vp; |
604 |
> |
mvs.ok = 0; |
605 |
|
|
606 |
< |
getheader(fp, gethview); |
606 |
> |
getheader(fp, (int (*)(char *, char *))&gethview, (char *)&mvs); |
607 |
|
|
608 |
+ |
if (rp != NULL && !fgetsresolu(rp, fp)) |
609 |
+ |
mvs.ok = 0; |
610 |
+ |
|
611 |
|
fclose(fp); |
612 |
|
|
613 |
< |
return(gothview); |
613 |
> |
return(mvs.ok); |
614 |
|
} |