1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.33 |
static const char RCSid[] = "$Id: image.c,v 2.32 2006/07/12 01:37:40 greg Exp $"; |
3 |
greg |
1.1 |
#endif |
4 |
|
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/* |
5 |
|
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* image.c - routines for image generation. |
6 |
greg |
2.16 |
* |
7 |
|
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* External symbols declared in view.h |
8 |
|
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*/ |
9 |
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|
10 |
greg |
2.17 |
#include "copyright.h" |
11 |
greg |
1.1 |
|
12 |
greg |
2.32 |
#include <ctype.h> |
13 |
schorsch |
2.22 |
#include "rtio.h" |
14 |
greg |
2.28 |
#include "rtmath.h" |
15 |
greg |
2.27 |
#include "paths.h" |
16 |
greg |
1.1 |
#include "view.h" |
17 |
|
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|
18 |
greg |
2.4 |
|
19 |
greg |
2.11 |
#define FEQ(x,y) (fabs((x)-(y)) <= FTINY) |
20 |
|
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#define VEQ(v,w) (FEQ((v)[0],(w)[0]) && FEQ((v)[1],(w)[1]) \ |
21 |
|
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&& FEQ((v)[2],(w)[2])) |
22 |
|
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|
23 |
greg |
1.5 |
VIEW stdview = STDVIEW; /* default view parameters */ |
24 |
greg |
1.1 |
|
25 |
schorsch |
2.26 |
static gethfunc gethview; |
26 |
|
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|
27 |
greg |
1.1 |
|
28 |
|
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char * |
29 |
greg |
1.5 |
setview(v) /* set hvec and vvec, return message on error */ |
30 |
|
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register VIEW *v; |
31 |
greg |
1.3 |
{ |
32 |
greg |
1.12 |
static char ill_horiz[] = "illegal horizontal view size"; |
33 |
|
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static char ill_vert[] = "illegal vertical view size"; |
34 |
|
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|
35 |
gwlarson |
2.15 |
if (v->vaft < -FTINY || (v->vaft > FTINY && v->vaft <= v->vfore)) |
36 |
greg |
2.7 |
return("illegal fore/aft clipping plane"); |
37 |
|
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|
38 |
greg |
2.31 |
if (v->vdist <= FTINY) |
39 |
|
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return("illegal view distance"); |
40 |
greg |
2.29 |
v->vdist *= normalize(v->vdir); /* normalize direction */ |
41 |
|
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if (v->vdist == 0.0) |
42 |
greg |
1.1 |
return("zero view direction"); |
43 |
|
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|
44 |
greg |
1.14 |
if (normalize(v->vup) == 0.0) /* normalize view up */ |
45 |
|
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return("zero view up vector"); |
46 |
|
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|
47 |
greg |
1.5 |
fcross(v->hvec, v->vdir, v->vup); /* compute horiz dir */ |
48 |
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|
49 |
|
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if (normalize(v->hvec) == 0.0) |
50 |
greg |
1.14 |
return("view up parallel to view direction"); |
51 |
greg |
1.1 |
|
52 |
greg |
1.5 |
fcross(v->vvec, v->hvec, v->vdir); /* compute vert dir */ |
53 |
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|
54 |
greg |
1.12 |
if (v->horiz <= FTINY) |
55 |
|
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return(ill_horiz); |
56 |
|
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if (v->vert <= FTINY) |
57 |
|
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return(ill_vert); |
58 |
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|
59 |
|
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switch (v->type) { |
60 |
|
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case VT_PAR: /* parallel view */ |
61 |
greg |
1.5 |
v->hn2 = v->horiz; |
62 |
greg |
1.12 |
v->vn2 = v->vert; |
63 |
|
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break; |
64 |
|
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case VT_PER: /* perspective view */ |
65 |
|
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if (v->horiz >= 180.0-FTINY) |
66 |
|
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return(ill_horiz); |
67 |
|
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if (v->vert >= 180.0-FTINY) |
68 |
|
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return(ill_vert); |
69 |
greg |
1.5 |
v->hn2 = 2.0 * tan(v->horiz*(PI/180.0/2.0)); |
70 |
greg |
1.12 |
v->vn2 = 2.0 * tan(v->vert*(PI/180.0/2.0)); |
71 |
|
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break; |
72 |
greg |
2.9 |
case VT_CYL: /* cylindrical panorama */ |
73 |
|
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if (v->horiz > 360.0+FTINY) |
74 |
|
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return(ill_horiz); |
75 |
|
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if (v->vert >= 180.0-FTINY) |
76 |
|
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return(ill_vert); |
77 |
|
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v->hn2 = v->horiz * (PI/180.0); |
78 |
|
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v->vn2 = 2.0 * tan(v->vert*(PI/180.0/2.0)); |
79 |
|
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break; |
80 |
greg |
1.12 |
case VT_ANG: /* angular fisheye */ |
81 |
|
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if (v->horiz > 360.0+FTINY) |
82 |
|
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return(ill_horiz); |
83 |
|
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if (v->vert > 360.0+FTINY) |
84 |
|
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return(ill_vert); |
85 |
greg |
2.9 |
v->hn2 = v->horiz * (PI/180.0); |
86 |
|
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v->vn2 = v->vert * (PI/180.0); |
87 |
greg |
1.12 |
break; |
88 |
|
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case VT_HEM: /* hemispherical fisheye */ |
89 |
|
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if (v->horiz > 180.0+FTINY) |
90 |
|
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return(ill_horiz); |
91 |
|
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if (v->vert > 180.0+FTINY) |
92 |
|
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return(ill_vert); |
93 |
|
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v->hn2 = 2.0 * sin(v->horiz*(PI/180.0/2.0)); |
94 |
|
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v->vn2 = 2.0 * sin(v->vert*(PI/180.0/2.0)); |
95 |
|
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break; |
96 |
|
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default: |
97 |
greg |
1.1 |
return("unknown view type"); |
98 |
greg |
1.12 |
} |
99 |
greg |
1.13 |
if (v->type != VT_ANG) { |
100 |
greg |
2.9 |
if (v->type != VT_CYL) { |
101 |
|
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v->hvec[0] *= v->hn2; |
102 |
|
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v->hvec[1] *= v->hn2; |
103 |
|
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v->hvec[2] *= v->hn2; |
104 |
|
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} |
105 |
greg |
1.12 |
v->vvec[0] *= v->vn2; |
106 |
|
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v->vvec[1] *= v->vn2; |
107 |
|
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v->vvec[2] *= v->vn2; |
108 |
|
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} |
109 |
greg |
1.5 |
v->hn2 *= v->hn2; |
110 |
|
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v->vn2 *= v->vn2; |
111 |
greg |
1.1 |
|
112 |
|
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return(NULL); |
113 |
|
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} |
114 |
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|
115 |
|
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|
116 |
greg |
2.16 |
void |
117 |
greg |
1.7 |
normaspect(va, ap, xp, yp) /* fix pixel aspect or resolution */ |
118 |
|
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double va; /* view aspect ratio */ |
119 |
|
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double *ap; /* pixel aspect in (or out if 0) */ |
120 |
|
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int *xp, *yp; /* x and y resolution in (or out if *ap!=0) */ |
121 |
greg |
1.6 |
{ |
122 |
|
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if (*ap <= FTINY) |
123 |
greg |
1.7 |
*ap = va * *xp / *yp; /* compute pixel aspect */ |
124 |
greg |
1.6 |
else if (va * *xp > *ap * *yp) |
125 |
greg |
1.10 |
*xp = *yp / va * *ap + .5; /* reduce x resolution */ |
126 |
greg |
1.6 |
else |
127 |
greg |
1.10 |
*yp = *xp * va / *ap + .5; /* reduce y resolution */ |
128 |
greg |
1.6 |
} |
129 |
|
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|
130 |
|
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|
131 |
greg |
2.7 |
double |
132 |
greg |
1.5 |
viewray(orig, direc, v, x, y) /* compute ray origin and direction */ |
133 |
greg |
1.1 |
FVECT orig, direc; |
134 |
|
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register VIEW *v; |
135 |
|
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double x, y; |
136 |
|
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{ |
137 |
greg |
1.12 |
double d, z; |
138 |
|
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|
139 |
greg |
1.5 |
x += v->hoff - 0.5; |
140 |
|
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y += v->voff - 0.5; |
141 |
greg |
1.1 |
|
142 |
greg |
1.12 |
switch(v->type) { |
143 |
|
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case VT_PAR: /* parallel view */ |
144 |
greg |
2.7 |
orig[0] = v->vp[0] + v->vfore*v->vdir[0] |
145 |
|
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+ x*v->hvec[0] + y*v->vvec[0]; |
146 |
|
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orig[1] = v->vp[1] + v->vfore*v->vdir[1] |
147 |
|
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+ x*v->hvec[1] + y*v->vvec[1]; |
148 |
|
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orig[2] = v->vp[2] + v->vfore*v->vdir[2] |
149 |
|
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+ x*v->hvec[2] + y*v->vvec[2]; |
150 |
greg |
1.1 |
VCOPY(direc, v->vdir); |
151 |
greg |
2.8 |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
152 |
greg |
1.12 |
case VT_PER: /* perspective view */ |
153 |
greg |
1.5 |
direc[0] = v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
154 |
|
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direc[1] = v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
155 |
|
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direc[2] = v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
156 |
greg |
2.7 |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
157 |
|
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orig[1] = v->vp[1] + v->vfore*direc[1]; |
158 |
|
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orig[2] = v->vp[2] + v->vfore*direc[2]; |
159 |
|
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d = normalize(direc); |
160 |
greg |
2.8 |
return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
161 |
greg |
1.12 |
case VT_HEM: /* hemispherical fisheye */ |
162 |
greg |
1.13 |
z = 1.0 - x*x*v->hn2 - y*y*v->vn2; |
163 |
greg |
1.12 |
if (z < 0.0) |
164 |
greg |
2.7 |
return(-1.0); |
165 |
greg |
1.12 |
z = sqrt(z); |
166 |
|
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
167 |
|
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
168 |
|
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
169 |
greg |
2.7 |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
170 |
|
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orig[1] = v->vp[1] + v->vfore*direc[1]; |
171 |
|
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orig[2] = v->vp[2] + v->vfore*direc[2]; |
172 |
greg |
2.8 |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
173 |
greg |
2.9 |
case VT_CYL: /* cylindrical panorama */ |
174 |
|
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d = x * v->horiz * (PI/180.0); |
175 |
|
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z = cos(d); |
176 |
|
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x = sin(d); |
177 |
|
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
178 |
|
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
179 |
|
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
180 |
|
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orig[0] = v->vp[0] + v->vfore*direc[0]; |
181 |
|
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orig[1] = v->vp[1] + v->vfore*direc[1]; |
182 |
|
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orig[2] = v->vp[2] + v->vfore*direc[2]; |
183 |
|
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d = normalize(direc); |
184 |
|
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return(v->vaft > FTINY ? (v->vaft - v->vfore)*d : 0.0); |
185 |
greg |
1.12 |
case VT_ANG: /* angular fisheye */ |
186 |
|
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x *= v->horiz/180.0; |
187 |
|
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y *= v->vert/180.0; |
188 |
|
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d = x*x + y*y; |
189 |
|
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if (d > 1.0) |
190 |
greg |
2.7 |
return(-1.0); |
191 |
greg |
1.12 |
d = sqrt(d); |
192 |
|
|
z = cos(PI*d); |
193 |
greg |
2.6 |
d = d <= FTINY ? PI : sqrt(1 - z*z)/d; |
194 |
greg |
1.12 |
x *= d; |
195 |
|
|
y *= d; |
196 |
|
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direc[0] = z*v->vdir[0] + x*v->hvec[0] + y*v->vvec[0]; |
197 |
|
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direc[1] = z*v->vdir[1] + x*v->hvec[1] + y*v->vvec[1]; |
198 |
|
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direc[2] = z*v->vdir[2] + x*v->hvec[2] + y*v->vvec[2]; |
199 |
greg |
2.7 |
orig[0] = v->vp[0] + v->vfore*direc[0]; |
200 |
|
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orig[1] = v->vp[1] + v->vfore*direc[1]; |
201 |
|
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orig[2] = v->vp[2] + v->vfore*direc[2]; |
202 |
greg |
2.8 |
return(v->vaft > FTINY ? v->vaft - v->vfore : 0.0); |
203 |
greg |
1.1 |
} |
204 |
greg |
2.7 |
return(-1.0); |
205 |
greg |
1.1 |
} |
206 |
|
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|
207 |
|
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|
208 |
greg |
2.16 |
void |
209 |
greg |
1.17 |
viewloc(ip, v, p) /* find image location for point */ |
210 |
|
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FVECT ip; |
211 |
greg |
1.3 |
register VIEW *v; |
212 |
|
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FVECT p; |
213 |
|
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{ |
214 |
gregl |
2.13 |
double d, d2; |
215 |
greg |
1.3 |
FVECT disp; |
216 |
greg |
1.5 |
|
217 |
greg |
1.3 |
disp[0] = p[0] - v->vp[0]; |
218 |
|
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disp[1] = p[1] - v->vp[1]; |
219 |
|
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disp[2] = p[2] - v->vp[2]; |
220 |
|
|
|
221 |
greg |
1.12 |
switch (v->type) { |
222 |
|
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case VT_PAR: /* parallel view */ |
223 |
greg |
2.7 |
ip[2] = DOT(disp,v->vdir) - v->vfore; |
224 |
greg |
1.13 |
break; |
225 |
greg |
1.12 |
case VT_PER: /* perspective view */ |
226 |
greg |
1.11 |
d = DOT(disp,v->vdir); |
227 |
gregl |
2.13 |
ip[2] = VLEN(disp); |
228 |
greg |
1.17 |
if (d < 0.0) { /* fold pyramid */ |
229 |
|
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ip[2] = -ip[2]; |
230 |
greg |
1.11 |
d = -d; |
231 |
greg |
2.7 |
} |
232 |
|
|
if (d > FTINY) { |
233 |
greg |
1.11 |
d = 1.0/d; |
234 |
|
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disp[0] *= d; |
235 |
|
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disp[1] *= d; |
236 |
|
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disp[2] *= d; |
237 |
|
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} |
238 |
greg |
2.7 |
ip[2] *= (1.0 - v->vfore*d); |
239 |
greg |
1.13 |
break; |
240 |
greg |
1.12 |
case VT_HEM: /* hemispherical fisheye */ |
241 |
|
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d = normalize(disp); |
242 |
greg |
1.17 |
if (DOT(disp,v->vdir) < 0.0) |
243 |
|
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ip[2] = -d; |
244 |
|
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else |
245 |
|
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ip[2] = d; |
246 |
greg |
2.7 |
ip[2] -= v->vfore; |
247 |
greg |
1.13 |
break; |
248 |
greg |
2.9 |
case VT_CYL: /* cylindrical panorama */ |
249 |
|
|
d = DOT(disp,v->hvec); |
250 |
gregl |
2.13 |
d2 = DOT(disp,v->vdir); |
251 |
|
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ip[0] = 180.0/PI * atan2(d,d2) / v->horiz + 0.5 - v->hoff; |
252 |
|
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d = 1.0/sqrt(d*d + d2*d2); |
253 |
|
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ip[1] = DOT(disp,v->vvec)*d/v->vn2 + 0.5 - v->voff; |
254 |
|
|
ip[2] = VLEN(disp); |
255 |
gwlarson |
2.15 |
ip[2] *= (1.0 - v->vfore*d); |
256 |
greg |
2.9 |
return; |
257 |
greg |
1.12 |
case VT_ANG: /* angular fisheye */ |
258 |
greg |
1.17 |
ip[0] = 0.5 - v->hoff; |
259 |
|
|
ip[1] = 0.5 - v->voff; |
260 |
greg |
2.7 |
ip[2] = normalize(disp) - v->vfore; |
261 |
greg |
1.12 |
d = DOT(disp,v->vdir); |
262 |
|
|
if (d >= 1.0-FTINY) |
263 |
|
|
return; |
264 |
|
|
if (d <= -(1.0-FTINY)) { |
265 |
greg |
2.7 |
ip[0] += 180.0/v->horiz; |
266 |
greg |
1.12 |
return; |
267 |
|
|
} |
268 |
|
|
d = acos(d)/PI / sqrt(1.0 - d*d); |
269 |
greg |
1.17 |
ip[0] += DOT(disp,v->hvec)*d*180.0/v->horiz; |
270 |
|
|
ip[1] += DOT(disp,v->vvec)*d*180.0/v->vert; |
271 |
greg |
1.12 |
return; |
272 |
greg |
1.3 |
} |
273 |
greg |
1.17 |
ip[0] = DOT(disp,v->hvec)/v->hn2 + 0.5 - v->hoff; |
274 |
|
|
ip[1] = DOT(disp,v->vvec)/v->vn2 + 0.5 - v->voff; |
275 |
greg |
1.3 |
} |
276 |
|
|
|
277 |
|
|
|
278 |
greg |
2.16 |
void |
279 |
greg |
1.17 |
pix2loc(loc, rp, px, py) /* compute image location from pixel pos. */ |
280 |
schorsch |
2.18 |
RREAL loc[2]; |
281 |
greg |
1.17 |
register RESOLU *rp; |
282 |
|
|
int px, py; |
283 |
|
|
{ |
284 |
|
|
register int x, y; |
285 |
|
|
|
286 |
greg |
2.16 |
if (rp->rt & YMAJOR) { |
287 |
greg |
1.17 |
x = px; |
288 |
|
|
y = py; |
289 |
|
|
} else { |
290 |
|
|
x = py; |
291 |
|
|
y = px; |
292 |
|
|
} |
293 |
greg |
2.16 |
if (rp->rt & XDECR) |
294 |
greg |
1.17 |
x = rp->xr-1 - x; |
295 |
greg |
2.16 |
if (rp->rt & YDECR) |
296 |
greg |
1.17 |
y = rp->yr-1 - y; |
297 |
|
|
loc[0] = (x+.5)/rp->xr; |
298 |
|
|
loc[1] = (y+.5)/rp->yr; |
299 |
|
|
} |
300 |
|
|
|
301 |
|
|
|
302 |
greg |
2.16 |
void |
303 |
greg |
1.17 |
loc2pix(pp, rp, lx, ly) /* compute pixel pos. from image location */ |
304 |
|
|
int pp[2]; |
305 |
|
|
register RESOLU *rp; |
306 |
|
|
double lx, ly; |
307 |
|
|
{ |
308 |
|
|
register int x, y; |
309 |
|
|
|
310 |
|
|
x = lx * rp->xr; |
311 |
|
|
y = ly * rp->yr; |
312 |
greg |
2.16 |
if (rp->rt & XDECR) |
313 |
greg |
1.17 |
x = rp->xr-1 - x; |
314 |
greg |
2.16 |
if (rp->rt & YDECR) |
315 |
greg |
1.17 |
y = rp->yr-1 - y; |
316 |
greg |
2.16 |
if (rp->rt & YMAJOR) { |
317 |
greg |
1.17 |
pp[0] = x; |
318 |
|
|
pp[1] = y; |
319 |
|
|
} else { |
320 |
|
|
pp[0] = y; |
321 |
|
|
pp[1] = x; |
322 |
|
|
} |
323 |
|
|
} |
324 |
|
|
|
325 |
|
|
|
326 |
greg |
1.5 |
int |
327 |
|
|
getviewopt(v, ac, av) /* process view argument */ |
328 |
|
|
register VIEW *v; |
329 |
|
|
int ac; |
330 |
|
|
register char *av[]; |
331 |
|
|
{ |
332 |
greg |
1.16 |
#define check(c,l) if ((av[0][c]&&av[0][c]!=' ') || \ |
333 |
|
|
badarg(ac-1,av+1,l)) return(-1) |
334 |
greg |
1.5 |
|
335 |
greg |
1.9 |
if (ac <= 0 || av[0][0] != '-' || av[0][1] != 'v') |
336 |
greg |
1.5 |
return(-1); |
337 |
|
|
switch (av[0][2]) { |
338 |
|
|
case 't': /* type */ |
339 |
|
|
if (!av[0][3] || av[0][3]==' ') |
340 |
|
|
return(-1); |
341 |
greg |
1.16 |
check(4,""); |
342 |
greg |
1.5 |
v->type = av[0][3]; |
343 |
|
|
return(0); |
344 |
|
|
case 'p': /* point */ |
345 |
greg |
1.16 |
check(3,"fff"); |
346 |
greg |
1.5 |
v->vp[0] = atof(av[1]); |
347 |
|
|
v->vp[1] = atof(av[2]); |
348 |
|
|
v->vp[2] = atof(av[3]); |
349 |
|
|
return(3); |
350 |
|
|
case 'd': /* direction */ |
351 |
greg |
1.16 |
check(3,"fff"); |
352 |
greg |
1.5 |
v->vdir[0] = atof(av[1]); |
353 |
|
|
v->vdir[1] = atof(av[2]); |
354 |
|
|
v->vdir[2] = atof(av[3]); |
355 |
greg |
2.30 |
v->vdist = 1.; |
356 |
greg |
1.5 |
return(3); |
357 |
|
|
case 'u': /* up */ |
358 |
greg |
1.16 |
check(3,"fff"); |
359 |
greg |
1.5 |
v->vup[0] = atof(av[1]); |
360 |
|
|
v->vup[1] = atof(av[2]); |
361 |
|
|
v->vup[2] = atof(av[3]); |
362 |
|
|
return(3); |
363 |
|
|
case 'h': /* horizontal size */ |
364 |
greg |
1.16 |
check(3,"f"); |
365 |
greg |
1.5 |
v->horiz = atof(av[1]); |
366 |
|
|
return(1); |
367 |
|
|
case 'v': /* vertical size */ |
368 |
greg |
1.16 |
check(3,"f"); |
369 |
greg |
1.5 |
v->vert = atof(av[1]); |
370 |
|
|
return(1); |
371 |
greg |
2.7 |
case 'o': /* fore clipping plane */ |
372 |
|
|
check(3,"f"); |
373 |
|
|
v->vfore = atof(av[1]); |
374 |
|
|
return(1); |
375 |
|
|
case 'a': /* aft clipping plane */ |
376 |
|
|
check(3,"f"); |
377 |
|
|
v->vaft = atof(av[1]); |
378 |
|
|
return(1); |
379 |
greg |
1.5 |
case 's': /* shift */ |
380 |
greg |
1.16 |
check(3,"f"); |
381 |
greg |
1.5 |
v->hoff = atof(av[1]); |
382 |
|
|
return(1); |
383 |
|
|
case 'l': /* lift */ |
384 |
greg |
1.16 |
check(3,"f"); |
385 |
greg |
1.5 |
v->voff = atof(av[1]); |
386 |
|
|
return(1); |
387 |
|
|
default: |
388 |
|
|
return(-1); |
389 |
|
|
} |
390 |
|
|
#undef check |
391 |
|
|
} |
392 |
|
|
|
393 |
|
|
|
394 |
|
|
int |
395 |
|
|
sscanview(vp, s) /* get view parameters from string */ |
396 |
|
|
VIEW *vp; |
397 |
greg |
1.1 |
register char *s; |
398 |
|
|
{ |
399 |
greg |
1.5 |
int ac; |
400 |
|
|
char *av[4]; |
401 |
|
|
int na; |
402 |
|
|
int nvopts = 0; |
403 |
|
|
|
404 |
greg |
2.32 |
while (isspace(*s)) |
405 |
|
|
if (!*s++) |
406 |
|
|
return(0); |
407 |
greg |
1.9 |
while (*s) { |
408 |
greg |
1.5 |
ac = 0; |
409 |
|
|
do { |
410 |
greg |
2.21 |
if (ac || *s == '-') |
411 |
|
|
av[ac++] = s; |
412 |
greg |
2.32 |
while (*s && !isspace(*s)) |
413 |
greg |
1.5 |
s++; |
414 |
greg |
2.32 |
while (isspace(*s)) |
415 |
greg |
1.5 |
s++; |
416 |
|
|
} while (*s && ac < 4); |
417 |
|
|
if ((na = getviewopt(vp, ac, av)) >= 0) { |
418 |
|
|
if (na+1 < ac) |
419 |
|
|
s = av[na+1]; |
420 |
|
|
nvopts++; |
421 |
greg |
1.9 |
} else if (ac > 1) |
422 |
|
|
s = av[1]; |
423 |
|
|
} |
424 |
greg |
1.5 |
return(nvopts); |
425 |
greg |
1.1 |
} |
426 |
|
|
|
427 |
|
|
|
428 |
greg |
2.16 |
void |
429 |
greg |
1.1 |
fprintview(vp, fp) /* write out view parameters */ |
430 |
|
|
register VIEW *vp; |
431 |
|
|
FILE *fp; |
432 |
|
|
{ |
433 |
|
|
fprintf(fp, " -vt%c", vp->type); |
434 |
|
|
fprintf(fp, " -vp %.6g %.6g %.6g", vp->vp[0], vp->vp[1], vp->vp[2]); |
435 |
greg |
2.29 |
fprintf(fp, " -vd %.6g %.6g %.6g", vp->vdir[0]*vp->vdist, |
436 |
|
|
vp->vdir[1]*vp->vdist, |
437 |
|
|
vp->vdir[2]*vp->vdist); |
438 |
greg |
1.1 |
fprintf(fp, " -vu %.6g %.6g %.6g", vp->vup[0], vp->vup[1], vp->vup[2]); |
439 |
|
|
fprintf(fp, " -vh %.6g -vv %.6g", vp->horiz, vp->vert); |
440 |
greg |
2.7 |
fprintf(fp, " -vo %.6g -va %.6g", vp->vfore, vp->vaft); |
441 |
greg |
1.9 |
fprintf(fp, " -vs %.6g -vl %.6g", vp->hoff, vp->voff); |
442 |
greg |
2.11 |
} |
443 |
|
|
|
444 |
|
|
|
445 |
|
|
char * |
446 |
|
|
viewopt(vp) /* translate to minimal view string */ |
447 |
|
|
register VIEW *vp; |
448 |
|
|
{ |
449 |
|
|
static char vwstr[128]; |
450 |
|
|
register char *cp = vwstr; |
451 |
|
|
|
452 |
greg |
2.33 |
*cp = '\0'; |
453 |
greg |
2.11 |
if (vp->type != stdview.type) { |
454 |
|
|
sprintf(cp, " -vt%c", vp->type); |
455 |
|
|
cp += strlen(cp); |
456 |
|
|
} |
457 |
|
|
if (!VEQ(vp->vp,stdview.vp)) { |
458 |
|
|
sprintf(cp, " -vp %.6g %.6g %.6g", |
459 |
|
|
vp->vp[0], vp->vp[1], vp->vp[2]); |
460 |
|
|
cp += strlen(cp); |
461 |
|
|
} |
462 |
greg |
2.29 |
if (!FEQ(vp->vdist,stdview.vdist) || !VEQ(vp->vdir,stdview.vdir)) { |
463 |
greg |
2.11 |
sprintf(cp, " -vd %.6g %.6g %.6g", |
464 |
greg |
2.29 |
vp->vdir[0]*vp->vdist, |
465 |
|
|
vp->vdir[1]*vp->vdist, |
466 |
|
|
vp->vdir[2]*vp->vdist); |
467 |
greg |
2.11 |
cp += strlen(cp); |
468 |
|
|
} |
469 |
|
|
if (!VEQ(vp->vup,stdview.vup)) { |
470 |
|
|
sprintf(cp, " -vu %.6g %.6g %.6g", |
471 |
|
|
vp->vup[0], vp->vup[1], vp->vup[2]); |
472 |
|
|
cp += strlen(cp); |
473 |
|
|
} |
474 |
|
|
if (!FEQ(vp->horiz,stdview.horiz)) { |
475 |
|
|
sprintf(cp, " -vh %.6g", vp->horiz); |
476 |
|
|
cp += strlen(cp); |
477 |
|
|
} |
478 |
|
|
if (!FEQ(vp->vert,stdview.vert)) { |
479 |
|
|
sprintf(cp, " -vv %.6g", vp->vert); |
480 |
|
|
cp += strlen(cp); |
481 |
|
|
} |
482 |
|
|
if (!FEQ(vp->vfore,stdview.vfore)) { |
483 |
|
|
sprintf(cp, " -vo %.6g", vp->vfore); |
484 |
|
|
cp += strlen(cp); |
485 |
|
|
} |
486 |
|
|
if (!FEQ(vp->vaft,stdview.vaft)) { |
487 |
|
|
sprintf(cp, " -va %.6g", vp->vaft); |
488 |
|
|
cp += strlen(cp); |
489 |
|
|
} |
490 |
|
|
if (!FEQ(vp->hoff,stdview.hoff)) { |
491 |
|
|
sprintf(cp, " -vs %.6g", vp->hoff); |
492 |
|
|
cp += strlen(cp); |
493 |
|
|
} |
494 |
|
|
if (!FEQ(vp->voff,stdview.voff)) { |
495 |
|
|
sprintf(cp, " -vl %.6g", vp->voff); |
496 |
|
|
cp += strlen(cp); |
497 |
|
|
} |
498 |
|
|
return(vwstr); |
499 |
greg |
1.1 |
} |
500 |
|
|
|
501 |
|
|
|
502 |
greg |
2.3 |
int |
503 |
|
|
isview(s) /* is this a view string? */ |
504 |
|
|
char *s; |
505 |
|
|
{ |
506 |
greg |
2.25 |
static char *altname[]={NULL,VIEWSTR,"rpict","rview","rvu","rpiece","pinterp",NULL}; |
507 |
greg |
2.5 |
extern char *progname; |
508 |
greg |
2.3 |
register char *cp; |
509 |
|
|
register char **an; |
510 |
|
|
/* add program name to list */ |
511 |
greg |
2.5 |
if (altname[0] == NULL) { |
512 |
|
|
for (cp = progname; *cp; cp++) |
513 |
|
|
; |
514 |
|
|
while (cp > progname && !ISDIRSEP(cp[-1])) |
515 |
|
|
cp--; |
516 |
|
|
altname[0] = cp; |
517 |
|
|
} |
518 |
greg |
2.3 |
/* skip leading path */ |
519 |
|
|
cp = s; |
520 |
|
|
while (*cp && *cp != ' ') |
521 |
|
|
cp++; |
522 |
greg |
2.5 |
while (cp > s && !ISDIRSEP(cp[-1])) |
523 |
greg |
2.3 |
cp--; |
524 |
|
|
for (an = altname; *an != NULL; an++) |
525 |
|
|
if (!strncmp(*an, cp, strlen(*an))) |
526 |
|
|
return(1); |
527 |
|
|
return(0); |
528 |
|
|
} |
529 |
greg |
1.1 |
|
530 |
greg |
2.3 |
|
531 |
greg |
1.15 |
struct myview { |
532 |
|
|
VIEW *hv; |
533 |
|
|
int ok; |
534 |
|
|
}; |
535 |
greg |
1.1 |
|
536 |
greg |
1.15 |
|
537 |
gwlarson |
2.14 |
static int |
538 |
schorsch |
2.26 |
gethview( /* get view from header */ |
539 |
|
|
char *s, |
540 |
|
|
void *v |
541 |
|
|
) |
542 |
greg |
1.1 |
{ |
543 |
schorsch |
2.26 |
if (isview(s) && sscanview(((struct myview*)v)->hv, s) > 0) |
544 |
|
|
((struct myview*)v)->ok++; |
545 |
gwlarson |
2.14 |
return(0); |
546 |
greg |
1.1 |
} |
547 |
|
|
|
548 |
|
|
|
549 |
|
|
int |
550 |
greg |
1.17 |
viewfile(fname, vp, rp) /* get view from file */ |
551 |
greg |
1.1 |
char *fname; |
552 |
|
|
VIEW *vp; |
553 |
greg |
1.17 |
RESOLU *rp; |
554 |
greg |
1.1 |
{ |
555 |
greg |
1.15 |
struct myview mvs; |
556 |
greg |
1.1 |
FILE *fp; |
557 |
|
|
|
558 |
greg |
2.16 |
if (fname == NULL || !strcmp(fname, "-")) |
559 |
|
|
fp = stdin; |
560 |
|
|
else if ((fp = fopen(fname, "r")) == NULL) |
561 |
greg |
1.1 |
return(-1); |
562 |
|
|
|
563 |
greg |
1.15 |
mvs.hv = vp; |
564 |
|
|
mvs.ok = 0; |
565 |
greg |
1.1 |
|
566 |
schorsch |
2.26 |
getheader(fp, gethview, &mvs); |
567 |
greg |
1.8 |
|
568 |
greg |
1.17 |
if (rp != NULL && !fgetsresolu(rp, fp)) |
569 |
greg |
1.15 |
mvs.ok = 0; |
570 |
greg |
1.1 |
|
571 |
|
|
fclose(fp); |
572 |
|
|
|
573 |
greg |
1.15 |
return(mvs.ok); |
574 |
greg |
1.1 |
} |