16 |
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17 |
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18 |
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typedef struct { |
19 |
– |
double sca; /* scalefactor */ |
19 |
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double xfm[4][4]; /* transform matrix */ |
20 |
+ |
double sca; /* scalefactor */ |
21 |
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} XF; |
22 |
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23 |
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static OBJREC *fobj; /* current function object */ |
25 |
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static XF fxf; /* current transformation */ |
26 |
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27 |
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28 |
< |
setmap(m, r, sca, xfm) /* set channels for function call */ |
28 |
> |
setmap(m, r, xfm, sca) /* set channels for function call */ |
29 |
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OBJREC *m; |
30 |
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register RAY *r; |
31 |
– |
double sca; |
31 |
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double xfm[4][4]; |
32 |
+ |
double sca; |
33 |
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{ |
34 |
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extern double l_noise3(), l_noise3a(), l_noise3b(), l_noise3c(); |
35 |
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extern double l_hermite(), l_fnoise3(), l_arg(); |
38 |
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39 |
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if (initfile != NULL) { |
40 |
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loadfunc(initfile); |
41 |
< |
scompile(NULL, "Dx=$1;Dy=$2;Dz=$3;"); |
42 |
< |
scompile(NULL, "Nx=$4;Ny=$5;Nz=$6;"); |
43 |
< |
scompile(NULL, "Px=$7;Py=$8;Pz=$9;"); |
44 |
< |
scompile(NULL, "T=$10;Rdot=$11;"); |
41 |
> |
scompile("Dx=$1;Dy=$2;Dz=$3;", NULL, 0); |
42 |
> |
scompile("Nx=$4;Ny=$5;Nz=$6;", NULL, 0); |
43 |
> |
scompile("Px=$7;Py=$8;Pz=$9;", NULL, 0); |
44 |
> |
scompile("T=$10;Rdot=$11;", NULL, 0); |
45 |
> |
scompile("S=$12;Tx=$13;Ty=$14;Tz=$15;", NULL, 0); |
46 |
> |
scompile("Ix=$16;Iy=$17;Iz=$18;", NULL, 0); |
47 |
> |
scompile("Jx=$19;Jy=$20;Jz=$21;", NULL, 0); |
48 |
> |
scompile("Kx=$22;Ky=$23;Kz=$24;", NULL, 0); |
49 |
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funset("arg", 1, l_arg); |
50 |
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funset("noise3", 3, l_noise3); |
51 |
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funset("noise3a", 3, l_noise3a); |
57 |
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} |
58 |
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fobj = m; |
59 |
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fray = r; |
60 |
< |
fxf.sca = r->ros * sca; |
61 |
< |
multmat4(fxf.xfm, r->rox, xfm); |
60 |
> |
fxf.sca = r->robs * sca; |
61 |
> |
multmat4(fxf.xfm, r->robx, xfm); |
62 |
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eclock++; /* notify expression evaluator */ |
63 |
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} |
64 |
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67 |
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register OBJREC *m; |
68 |
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RAY *r; |
69 |
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{ |
70 |
< |
#define mxf ((XF *)m->os) |
70 |
> |
register XF *mxf; |
71 |
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72 |
< |
if (mxf == NULL) { |
73 |
< |
register int n = m->oargs.nsargs; |
74 |
< |
register char **sa = m->oargs.sarg; |
72 |
> |
if ((mxf = (XF *)m->os) == NULL) { |
73 |
> |
register int n; |
74 |
> |
register char **sa; |
75 |
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|
76 |
< |
while (n > 0 && **sa != '-') { |
77 |
< |
n--; |
78 |
< |
sa++; |
75 |
< |
} |
76 |
> |
for (n = m->oargs.nsargs, sa = m->oargs.sarg; |
77 |
> |
n > 0 && **sa != '-'; n--, sa++) |
78 |
> |
; |
79 |
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mxf = (XF *)malloc(sizeof(XF)); |
80 |
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if (mxf == NULL) |
81 |
|
goto memerr; |
79 |
– |
mxf->sca = 1.0; |
80 |
– |
setident4(mxf->xfm); |
82 |
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if (invxf(mxf->xfm, &mxf->sca, n, sa) != n) |
83 |
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objerror(m, USER, "bad transform"); |
84 |
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if (mxf->sca < 0.0) |
85 |
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mxf->sca = -mxf->sca; |
86 |
+ |
m->os = (char *)mxf; |
87 |
|
} |
88 |
< |
setmap(m, r, mxf->sca, mxf->xfm); |
88 |
> |
setmap(m, r, mxf->xfm, mxf->sca); |
89 |
|
return; |
90 |
|
memerr: |
91 |
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error(SYSTEM, "out of memory in setfunc"); |
99 |
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extern char *libpath; /* library search path */ |
100 |
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char *ffname; |
101 |
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102 |
< |
if ((ffname = getpath(fname, libpath)) == NULL) { |
102 |
> |
if ((ffname = getpath(fname, libpath, R_OK)) == NULL) { |
103 |
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sprintf(errmsg, "cannot find function file \"%s\"", fname); |
104 |
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error(USER, errmsg); |
105 |
|
} |
130 |
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chanvalue(n) /* return channel n to calcomp */ |
131 |
|
register int n; |
132 |
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{ |
133 |
< |
double res; |
133 |
> |
double sum; |
134 |
|
register RAY *r; |
135 |
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136 |
< |
n--; /* for convenience */ |
136 |
> |
n--; /* for convenience */ |
137 |
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138 |
< |
if (n < 0 || n > 10) |
138 |
> |
if (n < 0 || n > 23) |
139 |
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error(USER, "illegal channel number"); |
140 |
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141 |
< |
if (n == 9) { /* distance */ |
141 |
> |
if (n == 9) { /* distance */ |
142 |
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143 |
< |
res = fray->rot; |
143 |
> |
sum = fray->rot; |
144 |
|
for (r = fray->parent; r != NULL; r = r->parent) |
145 |
< |
res += r->rot; |
146 |
< |
res *= fxf.sca; |
145 |
> |
sum += r->rot; |
146 |
> |
return(sum * fxf.sca); |
147 |
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|
148 |
< |
} else if (n == 10) { /* dot product */ |
148 |
> |
} |
149 |
> |
if (n == 10) /* dot product */ |
150 |
> |
return(fray->rod); |
151 |
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|
152 |
< |
res = fray->rod; |
152 |
> |
if (n < 3) /* ray direction */ |
153 |
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|
154 |
< |
} else if (n < 3) { /* ray direction */ |
155 |
< |
res = ( fray->rdir[0]*fxf.xfm[0][n] + |
156 |
< |
fray->rdir[1]*fxf.xfm[1][n] + |
157 |
< |
fray->rdir[2]*fxf.xfm[2][n] ) |
154 |
< |
/ fxf.sca ; |
155 |
< |
} else if (n < 6) { /* surface normal */ |
156 |
< |
res = ( fray->ron[0]*fxf.xfm[0][n-3] + |
157 |
< |
fray->ron[1]*fxf.xfm[1][n-3] + |
158 |
< |
fray->ron[2]*fxf.xfm[2][n-3] ) |
159 |
< |
/ fxf.sca ; |
160 |
< |
} else { /* intersection */ |
161 |
< |
res = fray->rop[0]*fxf.xfm[0][n-6] + |
162 |
< |
fray->rop[1]*fxf.xfm[1][n-6] + |
163 |
< |
fray->rop[2]*fxf.xfm[2][n-6] + |
164 |
< |
fxf.xfm[3][n-6] ; |
165 |
< |
} |
154 |
> |
return( ( fray->rdir[0]*fxf.xfm[0][n] + |
155 |
> |
fray->rdir[1]*fxf.xfm[1][n] + |
156 |
> |
fray->rdir[2]*fxf.xfm[2][n] ) |
157 |
> |
/ fxf.sca ); |
158 |
|
|
159 |
< |
return(res); |
159 |
> |
if (n < 6) /* surface normal */ |
160 |
> |
|
161 |
> |
return( ( fray->ron[0]*fxf.xfm[0][n-3] + |
162 |
> |
fray->ron[1]*fxf.xfm[1][n-3] + |
163 |
> |
fray->ron[2]*fxf.xfm[2][n-3] ) |
164 |
> |
/ fxf.sca ); |
165 |
> |
|
166 |
> |
if (n < 9) /* intersection */ |
167 |
> |
|
168 |
> |
return( fray->rop[0]*fxf.xfm[0][n-6] + |
169 |
> |
fray->rop[1]*fxf.xfm[1][n-6] + |
170 |
> |
fray->rop[2]*fxf.xfm[2][n-6] + |
171 |
> |
fxf.xfm[3][n-6] ); |
172 |
> |
|
173 |
> |
if (n == 11) /* scale */ |
174 |
> |
return(fxf.sca); |
175 |
> |
|
176 |
> |
if (n < 15) /* origin */ |
177 |
> |
return(fxf.xfm[3][n-12]); |
178 |
> |
|
179 |
> |
if (n < 18) /* i unit vector */ |
180 |
> |
return(fxf.xfm[0][n-15] / fxf.sca); |
181 |
> |
|
182 |
> |
if (n < 21) /* j unit vector */ |
183 |
> |
return(fxf.xfm[1][n-15] / fxf.sca); |
184 |
> |
|
185 |
> |
if (n < 24) /* k unit vector */ |
186 |
> |
return(fxf.xfm[2][n-21] / fxf.sca); |
187 |
|
} |