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/* Copyright (c) 1994 Regents of the University of California */ |
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/* Copyright (c) 1996 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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int (*mg_ehand[MG_NENTITIES])(); |
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|
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/* Handler routine for unknown entities */ |
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|
32 |
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int (*mg_uhand)() = mg_defuhand; |
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|
34 |
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unsigned mg_nunknown; /* count of unknown entities */ |
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|
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/* error messages */ |
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|
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char *mg_err[MG_NERRS] = MG_ERRLIST; |
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static int e_any_toss(), /* discard unneeded entity */ |
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e_ies(), /* IES luminaire file */ |
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e_include(), /* include file */ |
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e_sph(), /* sphere */ |
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e_cyl(), /* cylinder */ |
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e_cone(), /* cone */ |
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e_ring(), /* ring */ |
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e_torus(); /* torus */ |
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e_cct(), /* color temperature */ |
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e_cmix(), /* color mixtures */ |
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e_cspec(); /* color spectra */ |
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|
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/* alternate handler support functions */ |
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mg_ehand[MG_E_INCLUDE] = e_include; |
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if (mg_ehand[MG_E_SPH] == NULL) { |
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mg_ehand[MG_E_SPH] = e_sph; |
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< |
ineed |= 1<<MG_E_POINT|1<<MG_E_VERTEX; |
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ineed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX; |
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} else |
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< |
uneed |= 1<<MG_E_POINT|1<<MG_E_VERTEX|1<<MG_E_XF; |
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> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
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if (mg_ehand[MG_E_CYL] == NULL) { |
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mg_ehand[MG_E_CYL] = e_cyl; |
96 |
< |
ineed |= 1<<MG_E_POINT|1<<MG_E_VERTEX; |
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ineed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX; |
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} else |
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uneed |= 1<<MG_E_POINT|1<<MG_E_VERTEX|1<<MG_E_XF; |
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> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
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if (mg_ehand[MG_E_CONE] == NULL) { |
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mg_ehand[MG_E_CONE] = e_cone; |
101 |
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ineed |= 1<<MG_E_POINT|1<<MG_E_VERTEX; |
101 |
> |
ineed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX; |
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} else |
103 |
< |
uneed |= 1<<MG_E_POINT|1<<MG_E_VERTEX|1<<MG_E_XF; |
103 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
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if (mg_ehand[MG_E_RING] == NULL) { |
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mg_ehand[MG_E_RING] = e_ring; |
106 |
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ineed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX; |
106 |
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ineed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX; |
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} else |
108 |
< |
uneed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX|1<<MG_E_XF; |
108 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
109 |
> |
if (mg_ehand[MG_E_PRISM] == NULL) { |
110 |
> |
mg_ehand[MG_E_PRISM] = e_prism; |
111 |
> |
ineed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX; |
112 |
> |
} else |
113 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
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if (mg_ehand[MG_E_TORUS] == NULL) { |
115 |
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mg_ehand[MG_E_TORUS] = e_torus; |
116 |
< |
ineed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX; |
116 |
> |
ineed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX; |
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} else |
118 |
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uneed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX|1<<MG_E_XF; |
118 |
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uneed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
119 |
> |
if (mg_ehand[MG_E_FACE] == NULL) |
120 |
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mg_ehand[MG_E_FACE] = mg_ehand[MG_E_FACEH]; |
121 |
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else if (mg_ehand[MG_E_FACEH] == NULL) |
122 |
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mg_ehand[MG_E_FACEH] = e_faceh; |
123 |
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if (mg_ehand[MG_E_COLOR] != NULL) { |
124 |
> |
if (mg_ehand[MG_E_CMIX] == NULL) { |
125 |
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mg_ehand[MG_E_CMIX] = e_cmix; |
126 |
> |
ineed |= 1L<<MG_E_COLOR|1L<<MG_E_CXY|1L<<MG_E_CSPEC|1L<<MG_E_CMIX|1L<<MG_E_CCT; |
127 |
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} |
128 |
> |
if (mg_ehand[MG_E_CSPEC] == NULL) { |
129 |
> |
mg_ehand[MG_E_CSPEC] = e_cspec; |
130 |
> |
ineed |= 1L<<MG_E_COLOR|1L<<MG_E_CXY|1L<<MG_E_CSPEC|1L<<MG_E_CMIX|1L<<MG_E_CCT; |
131 |
> |
} |
132 |
> |
if (mg_ehand[MG_E_CCT] == NULL) { |
133 |
> |
mg_ehand[MG_E_CCT] = e_cct; |
134 |
> |
ineed |= 1L<<MG_E_COLOR|1L<<MG_E_CXY|1L<<MG_E_CSPEC|1L<<MG_E_CMIX|1L<<MG_E_CCT; |
135 |
> |
} |
136 |
> |
} |
137 |
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/* check for consistency */ |
138 |
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if (mg_ehand[MG_E_FACE] != NULL) |
139 |
< |
uneed |= 1<<MG_E_POINT|1<<MG_E_VERTEX|1<<MG_E_XF; |
140 |
< |
if (mg_ehand[MG_E_CXY] != NULL) |
141 |
< |
uneed |= 1<<MG_E_COLOR; |
139 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
140 |
> |
if (mg_ehand[MG_E_CXY] != NULL || mg_ehand[MG_E_CSPEC] != NULL || |
141 |
> |
mg_ehand[MG_E_CMIX] != NULL) |
142 |
> |
uneed |= 1L<<MG_E_COLOR; |
143 |
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if (mg_ehand[MG_E_RD] != NULL || mg_ehand[MG_E_TD] != NULL || |
144 |
+ |
mg_ehand[MG_E_IR] != NULL || |
145 |
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mg_ehand[MG_E_ED] != NULL || |
146 |
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mg_ehand[MG_E_RS] != NULL || |
147 |
< |
mg_ehand[MG_E_TS] != NULL) |
148 |
< |
uneed |= 1<<MG_E_MATERIAL; |
147 |
> |
mg_ehand[MG_E_TS] != NULL || |
148 |
> |
mg_ehand[MG_E_SIDES] != NULL) |
149 |
> |
uneed |= 1L<<MG_E_MATERIAL; |
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for (i = 0; i < MG_NENTITIES; i++) |
151 |
< |
if (uneed & 1<<i && mg_ehand[i] == NULL) { |
151 |
> |
if (uneed & 1L<<i && mg_ehand[i] == NULL) { |
152 |
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fprintf(stderr, "Missing support for \"%s\" entity\n", |
153 |
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mg_ename[i]); |
154 |
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exit(1); |
155 |
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} |
156 |
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/* add support as needed */ |
157 |
< |
if (ineed & 1<<MG_E_VERTEX && mg_ehand[MG_E_VERTEX] != c_hvertex) |
157 |
> |
if (ineed & 1L<<MG_E_VERTEX && mg_ehand[MG_E_VERTEX] != c_hvertex) |
158 |
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e_supp[MG_E_VERTEX] = c_hvertex; |
159 |
< |
if (ineed & 1<<MG_E_POINT && mg_ehand[MG_E_POINT] != c_hvertex) |
159 |
> |
if (ineed & 1L<<MG_E_POINT && mg_ehand[MG_E_POINT] != c_hvertex) |
160 |
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e_supp[MG_E_POINT] = c_hvertex; |
161 |
< |
if (ineed & 1<<MG_E_NORMAL && mg_ehand[MG_E_NORMAL] != c_hvertex) |
161 |
> |
if (ineed & 1L<<MG_E_NORMAL && mg_ehand[MG_E_NORMAL] != c_hvertex) |
162 |
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e_supp[MG_E_NORMAL] = c_hvertex; |
163 |
+ |
if (ineed & 1L<<MG_E_COLOR && mg_ehand[MG_E_COLOR] != c_hcolor) |
164 |
+ |
e_supp[MG_E_COLOR] = c_hcolor; |
165 |
+ |
if (ineed & 1L<<MG_E_CXY && mg_ehand[MG_E_CXY] != c_hcolor) |
166 |
+ |
e_supp[MG_E_CXY] = c_hcolor; |
167 |
+ |
if (ineed & 1L<<MG_E_CSPEC && mg_ehand[MG_E_CSPEC] != c_hcolor) |
168 |
+ |
e_supp[MG_E_CSPEC] = c_hcolor; |
169 |
+ |
if (ineed & 1L<<MG_E_CMIX && mg_ehand[MG_E_CMIX] != c_hcolor) |
170 |
+ |
e_supp[MG_E_CMIX] = c_hcolor; |
171 |
+ |
if (ineed & 1L<<MG_E_CCT && mg_ehand[MG_E_CCT] != c_hcolor) |
172 |
+ |
e_supp[MG_E_CCT] = c_hcolor; |
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/* discard remaining entities */ |
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for (i = 0; i < MG_NENTITIES; i++) |
175 |
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if (mg_ehand[i] == NULL) |
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} |
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|
180 |
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int |
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mg_entity(name) /* get entity number from its name */ |
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char *name; |
183 |
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{ |
184 |
< |
static LUTAB ent_tab; /* entity lookup table */ |
184 |
> |
static LUTAB ent_tab = LU_SINIT(NULL,NULL); /* lookup table */ |
185 |
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register char *cp; |
186 |
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|
187 |
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if (!ent_tab.tsiz) { /* initialize hash table */ |
198 |
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} |
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201 |
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static int |
202 |
< |
handle_it(en, ac, av) /* pass entity to appropriate handler */ |
201 |
> |
int |
202 |
> |
mg_handle(en, ac, av) /* pass entity to appropriate handler */ |
203 |
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register int en; |
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int ac; |
205 |
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char **av; |
206 |
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{ |
207 |
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int rv; |
208 |
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209 |
< |
if (en < 0 && (en = mg_entity(av[0])) < 0) |
209 |
> |
if (en < 0 && (en = mg_entity(av[0])) < 0) { /* unknown entity */ |
210 |
> |
if (mg_uhand != NULL) |
211 |
> |
return((*mg_uhand)(ac, av)); |
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return(MG_EUNK); |
213 |
< |
if (e_supp[en] != NULL) { |
213 |
> |
} |
214 |
> |
if (e_supp[en] != NULL) { /* support handler */ |
215 |
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if ((rv = (*e_supp[en])(ac, av)) != MG_OK) |
216 |
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return(rv); |
217 |
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} |
218 |
< |
return((*mg_ehand[en])(ac, av)); |
218 |
> |
return((*mg_ehand[en])(ac, av)); /* assigned handler */ |
219 |
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} |
220 |
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221 |
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224 |
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register MG_FCTXT *ctx; |
225 |
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char *fn; |
226 |
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{ |
227 |
< |
int olen; |
227 |
> |
static int nfids; |
228 |
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register char *cp; |
229 |
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|
230 |
+ |
ctx->fid = ++nfids; |
231 |
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ctx->lineno = 0; |
232 |
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if (fn == NULL) { |
233 |
< |
ctx->fname = "<stdin>"; |
233 |
> |
strcpy(ctx->fname, "<stdin>"); |
234 |
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ctx->fp = stdin; |
235 |
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ctx->prev = mg_file; |
236 |
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mg_file = ctx; |
237 |
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return(MG_OK); |
238 |
|
} |
239 |
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/* get name relative to this context */ |
240 |
< |
if (mg_file != NULL && |
199 |
< |
(cp = strrchr(mg_file->fname, '/')) != NULL) |
200 |
< |
olen = cp - mg_file->fname + 1; |
201 |
< |
else |
202 |
< |
olen = 0; |
203 |
< |
ctx->fname = (char *)malloc(olen+strlen(fn)+1); |
204 |
< |
if (ctx->fname == NULL) |
205 |
< |
return(MG_EMEM); |
206 |
< |
if (olen) |
240 |
> |
if (mg_file != NULL && (cp = strrchr(mg_file->fname, '/')) != NULL) { |
241 |
|
strcpy(ctx->fname, mg_file->fname); |
242 |
< |
strcpy(ctx->fname+olen, fn); |
242 |
> |
strcpy(ctx->fname+(cp-mg_file->fname+1), fn); |
243 |
> |
} else |
244 |
> |
strcpy(ctx->fname, fn); |
245 |
|
ctx->fp = fopen(ctx->fname, "r"); |
246 |
< |
if (ctx->fp == NULL) { |
211 |
< |
free((MEM_PTR)ctx->fname); |
246 |
> |
if (ctx->fp == NULL) |
247 |
|
return(MG_ENOFILE); |
213 |
– |
} |
248 |
|
ctx->prev = mg_file; /* establish new context */ |
249 |
|
mg_file = ctx; |
250 |
|
return(MG_OK); |
257 |
|
register MG_FCTXT *ctx = mg_file; |
258 |
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|
259 |
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mg_file = ctx->prev; /* restore enclosing context */ |
260 |
< |
if (ctx->fp == stdin) |
261 |
< |
return; /* don't close standard input */ |
228 |
< |
fclose(ctx->fp); |
229 |
< |
free((MEM_PTR)ctx->fname); |
260 |
> |
if (ctx->fp != stdin) /* close file if it's a file */ |
261 |
> |
fclose(ctx->fp); |
262 |
|
} |
263 |
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|
264 |
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|
265 |
+ |
void |
266 |
+ |
mg_fgetpos(pos) /* get current position in input file */ |
267 |
+ |
register MG_FPOS *pos; |
268 |
+ |
{ |
269 |
+ |
extern long ftell(); |
270 |
+ |
|
271 |
+ |
pos->fid = mg_file->fid; |
272 |
+ |
pos->lineno = mg_file->lineno; |
273 |
+ |
pos->offset = ftell(mg_file->fp); |
274 |
+ |
} |
275 |
+ |
|
276 |
+ |
|
277 |
|
int |
278 |
< |
mg_rewind() /* rewind input file */ |
278 |
> |
mg_fgoto(pos) /* reposition input file pointer */ |
279 |
> |
register MG_FPOS *pos; |
280 |
|
{ |
281 |
< |
if (mg_file->lineno == 0) |
281 |
> |
if (pos->fid != mg_file->fid) |
282 |
> |
return(MG_ESEEK); |
283 |
> |
if (pos->lineno == mg_file->lineno) |
284 |
|
return(MG_OK); |
285 |
|
if (mg_file->fp == stdin) |
286 |
|
return(MG_ESEEK); /* cannot seek on standard input */ |
287 |
< |
if (fseek(mg_file->fp, 0L, 0) == EOF) |
287 |
> |
if (fseek(mg_file->fp, pos->offset, 0) == EOF) |
288 |
|
return(MG_ESEEK); |
289 |
< |
mg_file->lineno = 0; |
289 |
> |
mg_file->lineno = pos->lineno; |
290 |
|
return(MG_OK); |
291 |
|
} |
292 |
|
|
300 |
|
if (fgets(mg_file->inpline+len, |
301 |
|
MG_MAXLINE-len, mg_file->fp) == NULL) |
302 |
|
return(len); |
256 |
– |
mg_file->lineno++; |
303 |
|
len += strlen(mg_file->inpline+len); |
304 |
< |
if (len > 1 && mg_file->inpline[len-2] == '\\') |
305 |
< |
mg_file->inpline[--len-1] = ' '; |
306 |
< |
} while (mg_file->inpline[len]); |
304 |
> |
if (len >= MG_MAXLINE-1) |
305 |
> |
return(len); |
306 |
> |
mg_file->lineno++; |
307 |
> |
} while (len > 1 && mg_file->inpline[len-2] == '\\'); |
308 |
|
|
309 |
|
return(len); |
310 |
|
} |
316 |
|
char abuf[MG_MAXLINE]; |
317 |
|
char *argv[MG_MAXARGC]; |
318 |
|
int en; |
319 |
< |
register char *cp, **ap; |
320 |
< |
|
321 |
< |
strcpy(cp=abuf, mg_file->inpline); |
322 |
< |
ap = argv; /* break into words */ |
319 |
> |
register char *cp, *cp2, **ap; |
320 |
> |
/* copy line, removing escape chars */ |
321 |
> |
cp = abuf; cp2 = mg_file->inpline; |
322 |
> |
while ((*cp++ = *cp2++)) |
323 |
> |
if (cp2[0] == '\n' && cp2[-1] == '\\') |
324 |
> |
cp--; |
325 |
> |
cp = abuf; ap = argv; /* break into words */ |
326 |
|
for ( ; ; ) { |
327 |
|
while (isspace(*cp)) |
328 |
|
*cp++ = '\0'; |
338 |
|
return(MG_OK); /* no words in line */ |
339 |
|
*ap = NULL; |
340 |
|
/* else handle it */ |
341 |
< |
return(handle_it(-1, ap-argv, argv)); |
341 |
> |
return(mg_handle(-1, ap-argv, argv)); |
342 |
|
} |
343 |
|
|
344 |
|
|
348 |
|
{ |
349 |
|
MG_FCTXT cntxt; |
350 |
|
int rval; |
351 |
+ |
register int nbr; |
352 |
|
|
353 |
|
if ((rval = mg_open(&cntxt, fn)) != MG_OK) { |
354 |
|
fprintf(stderr, "%s: %s\n", fn, mg_err[rval]); |
355 |
|
return(rval); |
356 |
|
} |
357 |
< |
while (mg_read()) /* parse each line */ |
357 |
> |
while ((nbr = mg_read()) > 0) { /* parse each line */ |
358 |
> |
if (nbr >= MG_MAXLINE-1) { |
359 |
> |
fprintf(stderr, "%s: %d: %s\n", cntxt.fname, |
360 |
> |
cntxt.lineno, mg_err[rval=MG_ELINE]); |
361 |
> |
break; |
362 |
> |
} |
363 |
|
if ((rval = mg_parse()) != MG_OK) { |
364 |
|
fprintf(stderr, "%s: %d: %s:\n%s", cntxt.fname, |
365 |
|
cntxt.lineno, mg_err[rval], |
366 |
|
cntxt.inpline); |
367 |
|
break; |
368 |
|
} |
369 |
+ |
} |
370 |
|
mg_close(); |
371 |
|
return(rval); |
372 |
|
} |
373 |
|
|
374 |
|
|
375 |
< |
void |
376 |
< |
mg_clear() /* clear parser history */ |
375 |
> |
int |
376 |
> |
mg_defuhand(ac, av) /* default handler for unknown entities */ |
377 |
> |
int ac; |
378 |
> |
char **av; |
379 |
|
{ |
380 |
< |
c_clearall(); /* clear context tables */ |
381 |
< |
mg_file = NULL; /* reset our context */ |
380 |
> |
if (mg_nunknown++ == 0) /* report first incident */ |
381 |
> |
fprintf(stderr, "%s: %d: %s: %s\n", mg_file->fname, |
382 |
> |
mg_file->lineno, mg_err[MG_EUNK], av[0]); |
383 |
> |
return(MG_OK); |
384 |
|
} |
385 |
|
|
386 |
|
|
387 |
< |
int |
388 |
< |
mg_iterate(ac, av, f) /* iterate on statement */ |
328 |
< |
int ac; |
329 |
< |
register char **av; |
330 |
< |
int (*f)(); |
387 |
> |
void |
388 |
> |
mg_clear() /* clear parser history */ |
389 |
|
{ |
390 |
< |
int niter, rval; |
391 |
< |
register int i, j; |
392 |
< |
char *argv[MG_MAXARGC]; |
335 |
< |
char cntbuf[10]; |
336 |
< |
/* build partial transformation */ |
337 |
< |
for (i = 0; i < ac; i++) { |
338 |
< |
if (av[i][0] == '-' && av[i][1] == 'a' && av[i][2] == '\0') |
339 |
< |
break; |
340 |
< |
argv[i+1] = av[i]; |
341 |
< |
} |
342 |
< |
argv[i+1] = NULL; |
343 |
< |
if (i) { /* handle transformation */ |
344 |
< |
argv[0] = mg_ename[MG_E_XF]; |
345 |
< |
if ((rval = handle_it(MG_E_XF, i+1, argv)) != MG_OK) |
346 |
< |
return(rval); |
347 |
< |
} |
348 |
< |
if (i < ac) { /* run array */ |
349 |
< |
if (i+1 >= ac || !isint(av[i+1])) |
350 |
< |
return(MG_ETYPE); |
351 |
< |
niter = atoi(av[i+1]); |
352 |
< |
argv[0] = mg_ename[MG_E_OBJECT]; |
353 |
< |
argv[1] = cntbuf; |
354 |
< |
for (j = 2; j+i < ac; j++) |
355 |
< |
argv[j] = av[j+i]; |
356 |
< |
argv[j] = NULL; |
357 |
< |
for (j = 0; j < niter; j++) { |
358 |
< |
sprintf(cntbuf, "%d", j); |
359 |
< |
if ((rval = handle_it(MG_E_OBJECT, 2, argv)) != MG_OK) |
360 |
< |
return(rval); |
361 |
< |
argv[0] = "-i"; |
362 |
< |
if ((rval = mg_iterate(ac-i, argv, f)) != MG_OK) |
363 |
< |
return(rval); |
364 |
< |
argv[0] = mg_ename[MG_E_OBJECT]; |
365 |
< |
if ((rval = handle_it(MG_E_OBJECT, 1, argv)) != MG_OK) |
366 |
< |
return(rval); |
367 |
< |
} |
368 |
< |
} else if ((rval = (*f)()) != MG_OK) /* else do this instance */ |
369 |
< |
return(rval); |
370 |
< |
if (i) { /* reset the transform */ |
371 |
< |
argv[0] = mg_ename[MG_E_XF]; |
372 |
< |
argv[1] = NULL; |
373 |
< |
(void)handle_it(MG_E_XF, 1, argv); |
374 |
< |
} |
375 |
< |
return(MG_OK); |
390 |
> |
c_clearall(); /* clear context tables */ |
391 |
> |
while (mg_file != NULL) /* reset our file context */ |
392 |
> |
mg_close(); |
393 |
|
} |
394 |
|
|
395 |
|
|
407 |
|
} |
408 |
|
|
409 |
|
|
410 |
< |
static int |
394 |
< |
reload_file() /* reload current MGF file */ |
395 |
< |
{ |
396 |
< |
register int rval; |
397 |
< |
|
398 |
< |
if ((rval = mg_rewind()) != MG_OK) |
399 |
< |
return(rval); |
400 |
< |
while (mg_read()) |
401 |
< |
if ((rval = mg_parse()) != MG_OK) |
402 |
< |
return(rval); |
403 |
< |
return(MG_OK); |
404 |
< |
} |
405 |
< |
|
406 |
< |
|
407 |
< |
static int |
410 |
> |
int |
411 |
|
e_include(ac, av) /* include file */ |
412 |
|
int ac; |
413 |
|
char **av; |
414 |
|
{ |
415 |
+ |
char *xfarg[MG_MAXARGC]; |
416 |
|
MG_FCTXT ictx; |
417 |
< |
int rv; |
417 |
> |
XF_SPEC *xf_orig = xf_context; |
418 |
> |
register int rv; |
419 |
|
|
420 |
|
if (ac < 2) |
421 |
|
return(MG_EARGC); |
422 |
|
if ((rv = mg_open(&ictx, av[1])) != MG_OK) |
423 |
|
return(rv); |
424 |
< |
if ((rv = mg_iterate(ac-2, av+2, reload_file)) != MG_OK) { |
425 |
< |
fprintf(stderr, "%s: %d: %s:\n%s", ictx.fname, |
426 |
< |
ictx.lineno, mg_err[rv], ictx.inpline); |
427 |
< |
mg_close(); |
428 |
< |
return(MG_EINCL); |
424 |
> |
if (ac > 2) { |
425 |
> |
register int i; |
426 |
> |
|
427 |
> |
xfarg[0] = mg_ename[MG_E_XF]; |
428 |
> |
for (i = 1; i < ac-1; i++) |
429 |
> |
xfarg[i] = av[i+1]; |
430 |
> |
xfarg[ac-1] = NULL; |
431 |
> |
if ((rv = mg_handle(MG_E_XF, ac-1, xfarg)) != MG_OK) { |
432 |
> |
mg_close(); |
433 |
> |
return(rv); |
434 |
> |
} |
435 |
|
} |
436 |
+ |
do { |
437 |
+ |
while ((rv = mg_read()) > 0) { |
438 |
+ |
if (rv >= MG_MAXLINE-1) { |
439 |
+ |
fprintf(stderr, "%s: %d: %s\n", ictx.fname, |
440 |
+ |
ictx.lineno, mg_err[MG_ELINE]); |
441 |
+ |
mg_close(); |
442 |
+ |
return(MG_EINCL); |
443 |
+ |
} |
444 |
+ |
if ((rv = mg_parse()) != MG_OK) { |
445 |
+ |
fprintf(stderr, "%s: %d: %s:\n%s", ictx.fname, |
446 |
+ |
ictx.lineno, mg_err[rv], |
447 |
+ |
ictx.inpline); |
448 |
+ |
mg_close(); |
449 |
+ |
return(MG_EINCL); |
450 |
+ |
} |
451 |
+ |
} |
452 |
+ |
if (ac > 2) |
453 |
+ |
if ((rv = mg_handle(MG_E_XF, 1, xfarg)) != MG_OK) { |
454 |
+ |
mg_close(); |
455 |
+ |
return(rv); |
456 |
+ |
} |
457 |
+ |
} while (xf_context != xf_orig); |
458 |
|
mg_close(); |
459 |
|
return(MG_OK); |
460 |
|
} |
461 |
|
|
462 |
|
|
463 |
+ |
int |
464 |
+ |
e_faceh(ac, av) /* replace face+holes with single contour */ |
465 |
+ |
int ac; |
466 |
+ |
char **av; |
467 |
+ |
{ |
468 |
+ |
char *newav[MG_MAXARGC]; |
469 |
+ |
int lastp = 0; |
470 |
+ |
register int i, j; |
471 |
+ |
|
472 |
+ |
newav[0] = mg_ename[MG_E_FACE]; |
473 |
+ |
for (i = 1; i < ac; i++) |
474 |
+ |
if (av[i][0] == '-') { |
475 |
+ |
if (i < 4) |
476 |
+ |
return(MG_EARGC); |
477 |
+ |
if (i >= ac-1) |
478 |
+ |
break; |
479 |
+ |
if (!lastp) |
480 |
+ |
lastp = i-1; |
481 |
+ |
for (j = i+1; j < ac-1 && av[j+1][0] != '-'; j++) |
482 |
+ |
; |
483 |
+ |
if (j - i < 3) |
484 |
+ |
return(MG_EARGC); |
485 |
+ |
newav[i] = av[j]; /* connect hole loop */ |
486 |
+ |
} else |
487 |
+ |
newav[i] = av[i]; /* hole or perimeter vertex */ |
488 |
+ |
if (lastp) |
489 |
+ |
newav[i++] = av[lastp]; /* finish seam to outside */ |
490 |
+ |
newav[i] = NULL; |
491 |
+ |
return(mg_handle(MG_E_FACE, i, newav)); |
492 |
+ |
} |
493 |
+ |
|
494 |
+ |
|
495 |
|
static void |
496 |
|
make_axes(u, v, w) /* compute u and v given w (normalized) */ |
497 |
|
FVECT u, v, w; |
509 |
|
} |
510 |
|
|
511 |
|
|
512 |
< |
static int |
512 |
> |
int |
513 |
|
e_sph(ac, av) /* expand a sphere into cones */ |
514 |
|
int ac; |
515 |
|
char **av; |
534 |
|
rad = atof(av[2]); |
535 |
|
/* initialize */ |
536 |
|
warpconends = 1; |
537 |
< |
if ((rval = handle_it(MG_E_VERTEX, 3, v2ent)) != MG_OK) |
537 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 3, v2ent)) != MG_OK) |
538 |
|
return(rval); |
539 |
|
sprintf(p2x, FLTFMT, cv->p[0]); |
540 |
|
sprintf(p2y, FLTFMT, cv->p[1]); |
541 |
|
sprintf(p2z, FLTFMT, cv->p[2]+rad); |
542 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
542 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
543 |
|
return(rval); |
544 |
|
r2[0] = '0'; r2[1] = '\0'; |
545 |
|
for (i = 1; i <= 2*mg_nqcdivs; i++) { |
546 |
|
theta = i*(PI/2)/mg_nqcdivs; |
547 |
< |
if ((rval = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
547 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
548 |
|
return(rval); |
549 |
|
sprintf(p2z, FLTFMT, cv->p[2]+rad*cos(theta)); |
550 |
< |
if ((rval = handle_it(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
550 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
551 |
|
return(rval); |
552 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
552 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
553 |
|
return(rval); |
554 |
|
strcpy(r1, r2); |
555 |
|
sprintf(r2, FLTFMT, rad*sin(theta)); |
556 |
< |
if ((rval = handle_it(MG_E_CONE, 5, conent)) != MG_OK) |
556 |
> |
if ((rval = mg_handle(MG_E_CONE, 5, conent)) != MG_OK) |
557 |
|
return(rval); |
558 |
|
} |
559 |
|
warpconends = 0; |
561 |
|
} |
562 |
|
|
563 |
|
|
564 |
< |
static int |
564 |
> |
int |
565 |
|
e_torus(ac, av) /* expand a torus into cones */ |
566 |
|
int ac; |
567 |
|
char **av; |
582 |
|
return(MG_EARGC); |
583 |
|
if ((cv = c_getvert(av[1])) == NULL) |
584 |
|
return(MG_EUNDEF); |
585 |
< |
if (cv->n[0]==0. && cv->n[1]==0. && cv->n[2]==0.) |
585 |
> |
if (is0vect(cv->n)) |
586 |
|
return(MG_EILL); |
587 |
|
if (!isflt(av[2]) || !isflt(av[3])) |
588 |
|
return(MG_ETYPE); |
589 |
|
minrad = atof(av[2]); |
590 |
+ |
round0(minrad); |
591 |
|
maxrad = atof(av[3]); |
592 |
|
/* check orientation */ |
593 |
|
if (minrad > 0.) |
608 |
|
for (j = 0; j < 3; j++) |
609 |
|
sprintf(p2[j], FLTFMT, cv->p[j] + |
610 |
|
.5*sgn*(maxrad-minrad)*cv->n[j]); |
611 |
< |
if ((rval = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
611 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
612 |
|
return(rval); |
613 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
613 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
614 |
|
return(rval); |
615 |
|
sprintf(r2, FLTFMT, avgrad=.5*(minrad+maxrad)); |
616 |
|
/* run outer section */ |
617 |
|
for (i = 1; i <= 2*mg_nqcdivs; i++) { |
618 |
|
theta = i*(PI/2)/mg_nqcdivs; |
619 |
< |
if ((rval = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
619 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
620 |
|
return(rval); |
621 |
|
for (j = 0; j < 3; j++) |
622 |
|
sprintf(p2[j], FLTFMT, cv->p[j] + |
623 |
|
.5*sgn*(maxrad-minrad)*cos(theta)*cv->n[j]); |
624 |
< |
if ((rval = handle_it(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
624 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
625 |
|
return(rval); |
626 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
626 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
627 |
|
return(rval); |
628 |
|
strcpy(r1, r2); |
629 |
|
sprintf(r2, FLTFMT, avgrad + .5*(maxrad-minrad)*sin(theta)); |
630 |
< |
if ((rval = handle_it(MG_E_CONE, 5, conent)) != MG_OK) |
630 |
> |
if ((rval = mg_handle(MG_E_CONE, 5, conent)) != MG_OK) |
631 |
|
return(rval); |
632 |
|
} |
633 |
|
/* run inner section */ |
637 |
|
for (j = 0; j < 3; j++) |
638 |
|
sprintf(p2[j], FLTFMT, cv->p[j] + |
639 |
|
.5*sgn*(maxrad-minrad)*cos(theta)*cv->n[j]); |
640 |
< |
if ((rval = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
640 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
641 |
|
return(rval); |
642 |
< |
if ((rval = handle_it(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
642 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
643 |
|
return(rval); |
644 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
644 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
645 |
|
return(rval); |
646 |
|
strcpy(r1, r2); |
647 |
|
sprintf(r2, FLTFMT, -avgrad - .5*(maxrad-minrad)*sin(theta)); |
648 |
< |
if ((rval = handle_it(MG_E_CONE, 5, conent)) != MG_OK) |
648 |
> |
if ((rval = mg_handle(MG_E_CONE, 5, conent)) != MG_OK) |
649 |
|
return(rval); |
650 |
|
} |
651 |
|
warpconends = 0; |
653 |
|
} |
654 |
|
|
655 |
|
|
656 |
< |
static int |
656 |
> |
int |
657 |
|
e_cyl(ac, av) /* replace a cylinder with equivalent cone */ |
658 |
|
int ac; |
659 |
|
char **av; |
666 |
|
avnew[2] = av[2]; |
667 |
|
avnew[3] = av[3]; |
668 |
|
avnew[4] = av[2]; |
669 |
< |
return(handle_it(MG_E_CONE, 5, avnew)); |
669 |
> |
return(mg_handle(MG_E_CONE, 5, avnew)); |
670 |
|
} |
671 |
|
|
672 |
|
|
673 |
< |
static int |
673 |
> |
int |
674 |
|
e_ring(ac, av) /* turn a ring into polygons */ |
675 |
|
int ac; |
676 |
|
char **av; |
695 |
|
return(MG_EARGC); |
696 |
|
if ((cv = c_getvert(av[1])) == NULL) |
697 |
|
return(MG_EUNDEF); |
698 |
< |
if (cv->n[0]==0. && cv->n[1]==0. && cv->n[2]==0.) |
698 |
> |
if (is0vect(cv->n)) |
699 |
|
return(MG_EILL); |
700 |
|
if (!isflt(av[2]) || !isflt(av[3])) |
701 |
|
return(MG_ETYPE); |
702 |
|
minrad = atof(av[2]); |
703 |
+ |
round0(minrad); |
704 |
|
maxrad = atof(av[3]); |
705 |
|
if (minrad < 0. || maxrad <= minrad) |
706 |
|
return(MG_EILL); |
708 |
|
make_axes(u, v, cv->n); |
709 |
|
for (j = 0; j < 3; j++) |
710 |
|
sprintf(p3[j], FLTFMT, cv->p[j] + maxrad*u[j]); |
711 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
711 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
712 |
|
return(rv); |
713 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
713 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
714 |
|
return(rv); |
715 |
|
if (minrad == 0.) { /* closed */ |
716 |
|
v1ent[3] = av[1]; |
717 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
717 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
718 |
|
return(rv); |
719 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, nzent)) != MG_OK) |
719 |
> |
if ((rv = mg_handle(MG_E_NORMAL, 4, nzent)) != MG_OK) |
720 |
|
return(rv); |
721 |
|
for (i = 1; i <= 4*mg_nqcdivs; i++) { |
722 |
|
theta = i*(PI/2)/mg_nqcdivs; |
723 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
723 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
724 |
|
return(rv); |
725 |
|
for (j = 0; j < 3; j++) |
726 |
|
sprintf(p3[j], FLTFMT, cv->p[j] + |
727 |
|
maxrad*u[j]*cos(theta) + |
728 |
|
maxrad*v[j]*sin(theta)); |
729 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
729 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
730 |
|
return(rv); |
731 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
731 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
732 |
|
return(rv); |
733 |
< |
if ((rv = handle_it(MG_E_FACE, 4, fent)) != MG_OK) |
733 |
> |
if ((rv = mg_handle(MG_E_FACE, 4, fent)) != MG_OK) |
734 |
|
return(rv); |
735 |
|
} |
736 |
|
} else { /* open */ |
737 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
737 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
738 |
|
return(rv); |
739 |
|
for (j = 0; j < 3; j++) |
740 |
|
sprintf(p4[j], FLTFMT, cv->p[j] + minrad*u[j]); |
741 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p4ent)) != MG_OK) |
741 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p4ent)) != MG_OK) |
742 |
|
return(rv); |
743 |
|
v1ent[3] = "_rv4"; |
744 |
|
for (i = 1; i <= 4*mg_nqcdivs; i++) { |
745 |
|
theta = i*(PI/2)/mg_nqcdivs; |
746 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
746 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
747 |
|
return(rv); |
748 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
748 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
749 |
|
return(rv); |
750 |
|
for (j = 0; j < 3; j++) { |
751 |
|
d = u[j]*cos(theta) + v[j]*sin(theta); |
752 |
|
sprintf(p3[j], FLTFMT, cv->p[j] + maxrad*d); |
753 |
|
sprintf(p4[j], FLTFMT, cv->p[j] + minrad*d); |
754 |
|
} |
755 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
755 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
756 |
|
return(rv); |
757 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
757 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
758 |
|
return(rv); |
759 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
759 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v4ent)) != MG_OK) |
760 |
|
return(rv); |
761 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p4ent)) != MG_OK) |
761 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p4ent)) != MG_OK) |
762 |
|
return(rv); |
763 |
< |
if ((rv = handle_it(MG_E_FACE, 5, fent)) != MG_OK) |
763 |
> |
if ((rv = mg_handle(MG_E_FACE, 5, fent)) != MG_OK) |
764 |
|
return(rv); |
765 |
|
} |
766 |
|
} |
768 |
|
} |
769 |
|
|
770 |
|
|
771 |
< |
static int |
771 |
> |
int |
772 |
|
e_cone(ac, av) /* turn a cone into polygons */ |
773 |
|
int ac; |
774 |
|
char **av; |
783 |
|
static char *p4ent[5] = {mg_ename[MG_E_POINT],p4[0],p4[1],p4[2]}; |
784 |
|
static char *n4ent[5] = {mg_ename[MG_E_NORMAL],n4[0],n4[1],n4[2]}; |
785 |
|
static char *fent[6] = {mg_ename[MG_E_FACE],"_cv1","_cv2","_cv3","_cv4"}; |
786 |
+ |
char *v1n; |
787 |
|
register C_VERTEX *cv1, *cv2; |
788 |
|
register int i, j; |
789 |
|
FVECT u, v, w; |
799 |
|
if ((cv1 = c_getvert(av[1])) == NULL || |
800 |
|
(cv2 = c_getvert(av[3])) == NULL) |
801 |
|
return(MG_EUNDEF); |
802 |
+ |
v1n = av[1]; |
803 |
|
if (!isflt(av[2]) || !isflt(av[4])) |
804 |
|
return(MG_ETYPE); |
805 |
|
rad1 = atof(av[2]); |
806 |
+ |
round0(rad1); |
807 |
|
rad2 = atof(av[4]); |
808 |
+ |
round0(rad2); |
809 |
|
if (rad1 == 0.) { |
810 |
|
if (rad2 == 0.) |
811 |
|
return(MG_EILL); |
818 |
|
cv = cv1; |
819 |
|
cv1 = cv2; |
820 |
|
cv2 = cv; |
821 |
+ |
v1n = av[3]; |
822 |
|
d = rad1; |
823 |
|
rad1 = rad2; |
824 |
|
rad2 = d; |
830 |
|
if ((d = normalize(w)) == 0.) |
831 |
|
return(MG_EILL); |
832 |
|
n1off = n2off = (rad2 - rad1)/d; |
833 |
< |
if (warpconends) /* hack for e_sph and e_torus */ |
834 |
< |
n2off = tan(atan(n2off)-(PI/4)/mg_nqcdivs); |
835 |
< |
n2off = sgn*n2off; |
833 |
> |
if (warpconends) { /* hack for e_sph and e_torus */ |
834 |
> |
d = atan(n2off) - (PI/4)/mg_nqcdivs; |
835 |
> |
if (d <= -PI/2+FTINY) |
836 |
> |
n2off = -FHUGE; |
837 |
> |
else |
838 |
> |
n2off = tan(d); |
839 |
> |
} |
840 |
|
make_axes(u, v, w); |
841 |
|
for (j = 0; j < 3; j++) { |
842 |
|
sprintf(p3[j], FLTFMT, cv2->p[j] + rad2*u[j]); |
843 |
< |
sprintf(n3[j], FLTFMT, u[j] + w[j]*n2off); |
843 |
> |
if (n2off <= -FHUGE) |
844 |
> |
sprintf(n3[j], FLTFMT, -w[j]); |
845 |
> |
else |
846 |
> |
sprintf(n3[j], FLTFMT, u[j] + w[j]*n2off); |
847 |
|
} |
848 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
848 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
849 |
|
return(rv); |
850 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
850 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
851 |
|
return(rv); |
852 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
852 |
> |
if ((rv = mg_handle(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
853 |
|
return(rv); |
854 |
|
if (rad1 == 0.) { /* triangles */ |
855 |
< |
v1ent[3] = av[1]; |
856 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
855 |
> |
v1ent[3] = v1n; |
856 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
857 |
|
return(rv); |
858 |
|
for (j = 0; j < 3; j++) |
859 |
|
sprintf(n4[j], FLTFMT, w[j]); |
860 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
860 |
> |
if ((rv = mg_handle(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
861 |
|
return(rv); |
862 |
|
for (i = 1; i <= 4*mg_nqcdivs; i++) { |
863 |
|
theta = sgn*i*(PI/2)/mg_nqcdivs; |
864 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
864 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
865 |
|
return(rv); |
866 |
|
for (j = 0; j < 3; j++) { |
867 |
|
d = u[j]*cos(theta) + v[j]*sin(theta); |
868 |
|
sprintf(p3[j], FLTFMT, cv2->p[j] + rad2*d); |
869 |
< |
sprintf(n3[j], FLTFMT, d + w[j]*n2off); |
869 |
> |
if (n2off > -FHUGE) |
870 |
> |
sprintf(n3[j], FLTFMT, d + w[j]*n2off); |
871 |
|
} |
872 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
872 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
873 |
|
return(rv); |
874 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
874 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
875 |
|
return(rv); |
876 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
876 |
> |
if (n2off > -FHUGE && |
877 |
> |
(rv = mg_handle(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
878 |
|
return(rv); |
879 |
< |
if ((rv = handle_it(MG_E_FACE, 4, fent)) != MG_OK) |
879 |
> |
if ((rv = mg_handle(MG_E_FACE, 4, fent)) != MG_OK) |
880 |
|
return(rv); |
881 |
|
} |
882 |
|
} else { /* quads */ |
883 |
|
v1ent[3] = "_cv4"; |
884 |
< |
if (warpconends) /* hack for e_sph and e_torus */ |
885 |
< |
n1off = tan(atan(n1off)+(PI/4)/mg_nqcdivs); |
886 |
< |
n1off = sgn*n1off; |
884 |
> |
if (warpconends) { /* hack for e_sph and e_torus */ |
885 |
> |
d = atan(n1off) + (PI/4)/mg_nqcdivs; |
886 |
> |
if (d >= PI/2-FTINY) |
887 |
> |
n1off = FHUGE; |
888 |
> |
else |
889 |
> |
n1off = tan(atan(n1off)+(PI/4)/mg_nqcdivs); |
890 |
> |
} |
891 |
|
for (j = 0; j < 3; j++) { |
892 |
|
sprintf(p4[j], FLTFMT, cv1->p[j] + rad1*u[j]); |
893 |
< |
sprintf(n4[j], FLTFMT, u[j] + w[j]*n1off); |
893 |
> |
if (n1off >= FHUGE) |
894 |
> |
sprintf(n4[j], FLTFMT, w[j]); |
895 |
> |
else |
896 |
> |
sprintf(n4[j], FLTFMT, u[j] + w[j]*n1off); |
897 |
|
} |
898 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
898 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
899 |
|
return(rv); |
900 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p4ent)) != MG_OK) |
900 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p4ent)) != MG_OK) |
901 |
|
return(rv); |
902 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
902 |
> |
if ((rv = mg_handle(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
903 |
|
return(rv); |
904 |
|
for (i = 1; i <= 4*mg_nqcdivs; i++) { |
905 |
|
theta = sgn*i*(PI/2)/mg_nqcdivs; |
906 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
906 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
907 |
|
return(rv); |
908 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
908 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
909 |
|
return(rv); |
910 |
|
for (j = 0; j < 3; j++) { |
911 |
|
d = u[j]*cos(theta) + v[j]*sin(theta); |
912 |
|
sprintf(p3[j], FLTFMT, cv2->p[j] + rad2*d); |
913 |
< |
sprintf(n3[j], FLTFMT, d + w[j]*n2off); |
913 |
> |
if (n2off > -FHUGE) |
914 |
> |
sprintf(n3[j], FLTFMT, d + w[j]*n2off); |
915 |
|
sprintf(p4[j], FLTFMT, cv1->p[j] + rad1*d); |
916 |
< |
sprintf(n4[j], FLTFMT, d + w[j]*n1off); |
916 |
> |
if (n1off < FHUGE) |
917 |
> |
sprintf(n4[j], FLTFMT, d + w[j]*n1off); |
918 |
|
} |
919 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
919 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
920 |
|
return(rv); |
921 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
921 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
922 |
|
return(rv); |
923 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
923 |
> |
if (n2off > -FHUGE && |
924 |
> |
(rv = mg_handle(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
925 |
|
return(rv); |
926 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
926 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v4ent)) != MG_OK) |
927 |
|
return(rv); |
928 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p4ent)) != MG_OK) |
928 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p4ent)) != MG_OK) |
929 |
|
return(rv); |
930 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
930 |
> |
if (n1off < FHUGE && |
931 |
> |
(rv = mg_handle(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
932 |
|
return(rv); |
933 |
< |
if ((rv = handle_it(MG_E_FACE, 5, fent)) != MG_OK) |
933 |
> |
if ((rv = mg_handle(MG_E_FACE, 5, fent)) != MG_OK) |
934 |
|
return(rv); |
935 |
|
} |
936 |
|
} |
937 |
+ |
return(MG_OK); |
938 |
+ |
} |
939 |
+ |
|
940 |
+ |
|
941 |
+ |
int |
942 |
+ |
e_prism(ac, av) /* turn a prism into polygons */ |
943 |
+ |
int ac; |
944 |
+ |
char **av; |
945 |
+ |
{ |
946 |
+ |
static char p[3][24]; |
947 |
+ |
static char *vent[5] = {mg_ename[MG_E_VERTEX],NULL,"="}; |
948 |
+ |
static char *pent[5] = {mg_ename[MG_E_POINT],p[0],p[1],p[2]}; |
949 |
+ |
static char *znorm[5] = {mg_ename[MG_E_NORMAL],"0","0","0"}; |
950 |
+ |
char *newav[MG_MAXARGC], nvn[MG_MAXARGC-1][8]; |
951 |
+ |
double length; |
952 |
+ |
int hasnorm; |
953 |
+ |
FVECT v1, v2, v3, norm; |
954 |
+ |
register C_VERTEX *cv; |
955 |
+ |
C_VERTEX *cv0; |
956 |
+ |
int rv; |
957 |
+ |
register int i, j; |
958 |
+ |
/* check arguments */ |
959 |
+ |
if (ac < 5) |
960 |
+ |
return(MG_EARGC); |
961 |
+ |
if (!isflt(av[ac-1])) |
962 |
+ |
return(MG_ETYPE); |
963 |
+ |
length = atof(av[ac-1]); |
964 |
+ |
if (length <= FTINY && length >= -FTINY) |
965 |
+ |
return(MG_EILL); |
966 |
+ |
/* compute face normal */ |
967 |
+ |
if ((cv0 = c_getvert(av[1])) == NULL) |
968 |
+ |
return(MG_EUNDEF); |
969 |
+ |
hasnorm = 0; |
970 |
+ |
norm[0] = norm[1] = norm[2] = 0.; |
971 |
+ |
v1[0] = v1[1] = v1[2] = 0.; |
972 |
+ |
for (i = 2; i < ac-1; i++) { |
973 |
+ |
if ((cv = c_getvert(av[i])) == NULL) |
974 |
+ |
return(MG_EUNDEF); |
975 |
+ |
hasnorm += !is0vect(cv->n); |
976 |
+ |
v2[0] = cv->p[0] - cv0->p[0]; |
977 |
+ |
v2[1] = cv->p[1] - cv0->p[1]; |
978 |
+ |
v2[2] = cv->p[2] - cv0->p[2]; |
979 |
+ |
fcross(v3, v1, v2); |
980 |
+ |
norm[0] += v3[0]; |
981 |
+ |
norm[1] += v3[1]; |
982 |
+ |
norm[2] += v3[2]; |
983 |
+ |
VCOPY(v1, v2); |
984 |
+ |
} |
985 |
+ |
if (normalize(norm) == 0.) |
986 |
+ |
return(MG_EILL); |
987 |
+ |
/* create moved vertices */ |
988 |
+ |
for (i = 1; i < ac-1; i++) { |
989 |
+ |
sprintf(nvn[i-1], "_pv%d", i); |
990 |
+ |
vent[1] = nvn[i-1]; |
991 |
+ |
vent[3] = av[i]; |
992 |
+ |
if ((rv = mg_handle(MG_E_VERTEX, 4, vent)) != MG_OK) |
993 |
+ |
return(rv); |
994 |
+ |
cv = c_getvert(av[i]); /* checked above */ |
995 |
+ |
for (j = 0; j < 3; j++) |
996 |
+ |
sprintf(p[j], FLTFMT, cv->p[j] - length*norm[j]); |
997 |
+ |
if ((rv = mg_handle(MG_E_POINT, 4, pent)) != MG_OK) |
998 |
+ |
return(rv); |
999 |
+ |
} |
1000 |
+ |
/* make faces */ |
1001 |
+ |
newav[0] = mg_ename[MG_E_FACE]; |
1002 |
+ |
/* do the side faces */ |
1003 |
+ |
newav[5] = NULL; |
1004 |
+ |
newav[3] = av[ac-2]; |
1005 |
+ |
newav[4] = nvn[ac-3]; |
1006 |
+ |
for (i = 1; i < ac-1; i++) { |
1007 |
+ |
newav[1] = nvn[i-1]; |
1008 |
+ |
newav[2] = av[i]; |
1009 |
+ |
if ((rv = mg_handle(MG_E_FACE, 5, newav)) != MG_OK) |
1010 |
+ |
return(rv); |
1011 |
+ |
newav[3] = newav[2]; |
1012 |
+ |
newav[4] = newav[1]; |
1013 |
+ |
} |
1014 |
+ |
/* do top face */ |
1015 |
+ |
for (i = 1; i < ac-1; i++) { |
1016 |
+ |
if (hasnorm) { /* zero normals */ |
1017 |
+ |
vent[1] = nvn[i-1]; |
1018 |
+ |
if ((rv = mg_handle(MG_E_VERTEX, 2, vent)) != MG_OK) |
1019 |
+ |
return(rv); |
1020 |
+ |
if ((rv = mg_handle(MG_E_NORMAL, 4, znorm)) != MG_OK) |
1021 |
+ |
return(rv); |
1022 |
+ |
} |
1023 |
+ |
newav[ac-1-i] = nvn[i-1]; /* reverse */ |
1024 |
+ |
} |
1025 |
+ |
if ((rv = mg_handle(MG_E_FACE, ac-1, newav)) != MG_OK) |
1026 |
+ |
return(rv); |
1027 |
+ |
/* do bottom face */ |
1028 |
+ |
if (hasnorm) |
1029 |
+ |
for (i = 1; i < ac-1; i++) { |
1030 |
+ |
vent[1] = nvn[i-1]; |
1031 |
+ |
vent[3] = av[i]; |
1032 |
+ |
if ((rv = mg_handle(MG_E_VERTEX, 4, vent)) != MG_OK) |
1033 |
+ |
return(rv); |
1034 |
+ |
if ((rv = mg_handle(MG_E_NORMAL, 4, znorm)) != MG_OK) |
1035 |
+ |
return(rv); |
1036 |
+ |
newav[i] = nvn[i-1]; |
1037 |
+ |
} |
1038 |
+ |
else |
1039 |
+ |
for (i = 1; i < ac-1; i++) |
1040 |
+ |
newav[i] = av[i]; |
1041 |
+ |
newav[i] = NULL; |
1042 |
+ |
if ((rv = mg_handle(MG_E_FACE, i, newav)) != MG_OK) |
1043 |
+ |
return(rv); |
1044 |
+ |
return(MG_OK); |
1045 |
+ |
} |
1046 |
+ |
|
1047 |
+ |
|
1048 |
+ |
static int |
1049 |
+ |
put_cxy() /* put out current xy chromaticities */ |
1050 |
+ |
{ |
1051 |
+ |
static char xbuf[24], ybuf[24]; |
1052 |
+ |
static char *ccom[4] = {mg_ename[MG_E_CXY], xbuf, ybuf}; |
1053 |
+ |
|
1054 |
+ |
sprintf(xbuf, "%.4f", c_ccolor->cx); |
1055 |
+ |
sprintf(ybuf, "%.4f", c_ccolor->cy); |
1056 |
+ |
return(mg_handle(MG_E_CXY, 3, ccom)); |
1057 |
+ |
} |
1058 |
+ |
|
1059 |
+ |
|
1060 |
+ |
static int |
1061 |
+ |
put_cspec() /* put out current color spectrum */ |
1062 |
+ |
{ |
1063 |
+ |
char wl[2][6], vbuf[C_CNSS][24]; |
1064 |
+ |
char *newav[C_CNSS+4]; |
1065 |
+ |
double sf; |
1066 |
+ |
register int i; |
1067 |
+ |
|
1068 |
+ |
if (mg_ehand[MG_E_CSPEC] != c_hcolor) { |
1069 |
+ |
sprintf(wl[0], "%d", C_CMINWL); |
1070 |
+ |
sprintf(wl[1], "%d", C_CMAXWL); |
1071 |
+ |
newav[0] = mg_ename[MG_E_CSPEC]; |
1072 |
+ |
newav[1] = wl[0]; |
1073 |
+ |
newav[2] = wl[1]; |
1074 |
+ |
sf = (double)C_CNSS / c_ccolor->ssum; |
1075 |
+ |
for (i = 0; i < C_CNSS; i++) { |
1076 |
+ |
sprintf(vbuf[i], "%.4f", sf*c_ccolor->ssamp[i]); |
1077 |
+ |
newav[i+3] = vbuf[i]; |
1078 |
+ |
} |
1079 |
+ |
newav[C_CNSS+3] = NULL; |
1080 |
+ |
if ((i = mg_handle(MG_E_CSPEC, C_CNSS+3, newav)) != MG_OK) |
1081 |
+ |
return(i); |
1082 |
+ |
} |
1083 |
+ |
return(MG_OK); |
1084 |
+ |
} |
1085 |
+ |
|
1086 |
+ |
|
1087 |
+ |
static int |
1088 |
+ |
e_cspec(ac, av) /* handle spectral color */ |
1089 |
+ |
int ac; |
1090 |
+ |
char **av; |
1091 |
+ |
{ |
1092 |
+ |
/* convert to xy chromaticity */ |
1093 |
+ |
c_ccvt(c_ccolor, C_CSXY); |
1094 |
+ |
/* if it's really their handler, use it */ |
1095 |
+ |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1096 |
+ |
return(put_cxy()); |
1097 |
+ |
return(MG_OK); |
1098 |
+ |
} |
1099 |
+ |
|
1100 |
+ |
|
1101 |
+ |
static int |
1102 |
+ |
e_cmix(ac, av) /* handle mixing of colors */ |
1103 |
+ |
int ac; |
1104 |
+ |
char **av; |
1105 |
+ |
{ |
1106 |
+ |
/* |
1107 |
+ |
* Contorted logic works as follows: |
1108 |
+ |
* 1. the colors are already mixed in c_hcolor() support function |
1109 |
+ |
* 2. if we would handle a spectral result, make sure it's not |
1110 |
+ |
* 3. if c_hcolor() would handle a spectral result, don't bother |
1111 |
+ |
* 4. otherwise, make cspec entity and pass it to their handler |
1112 |
+ |
* 5. if we have only xy results, handle it as c_spec() would |
1113 |
+ |
*/ |
1114 |
+ |
if (mg_ehand[MG_E_CSPEC] == e_cspec) |
1115 |
+ |
c_ccvt(c_ccolor, C_CSXY); |
1116 |
+ |
else if (c_ccolor->flags & C_CDSPEC) |
1117 |
+ |
return(put_cspec()); |
1118 |
+ |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1119 |
+ |
return(put_cxy()); |
1120 |
+ |
return(MG_OK); |
1121 |
+ |
} |
1122 |
+ |
|
1123 |
+ |
|
1124 |
+ |
static int |
1125 |
+ |
e_cct(ac, av) /* handle color temperature */ |
1126 |
+ |
int ac; |
1127 |
+ |
char **av; |
1128 |
+ |
{ |
1129 |
+ |
/* |
1130 |
+ |
* Logic is similar to e_cmix here. Support handler has already |
1131 |
+ |
* converted temperature to spectral color. Put it out as such |
1132 |
+ |
* if they support it, otherwise convert to xy chromaticity and |
1133 |
+ |
* put it out if they handle it. |
1134 |
+ |
*/ |
1135 |
+ |
if (mg_ehand[MG_E_CSPEC] != e_cspec) |
1136 |
+ |
return(put_cspec()); |
1137 |
+ |
c_ccvt(c_ccolor, C_CSXY); |
1138 |
+ |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1139 |
+ |
return(put_cxy()); |
1140 |
|
return(MG_OK); |
1141 |
|
} |