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/* Copyright (c) 1994 Regents of the University of California */ |
2 |
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#ifndef lint |
2 |
< |
static char SCCSid[] = "$SunId$ LBL"; |
2 |
> |
static const char RCSid[] = "$Id$"; |
3 |
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#endif |
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|
4 |
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/* |
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* Parse an MGF file, converting or discarding unsupported entities |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#include <ctype.h> |
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#include <string.h> |
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|
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int (*mg_ehand[MG_NENTITIES])(); |
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|
28 |
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/* Handler routine for unknown entities */ |
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|
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int (*mg_uhand)() = mg_defuhand; |
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|
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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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|
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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_cct(), /* color temperature */ |
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e_cmix(), /* color mixtures */ |
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e_cspec(), /* color spectra */ |
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e_cyl(), /* cylinder */ |
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e_cone(), /* cone */ |
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e_prism(), /* prism */ |
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e_ring(), /* ring */ |
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e_torus(); /* torus */ |
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e_cspec(); /* color spectra */ |
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|
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/* alternate handler support functions */ |
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|
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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; |
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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_CONE] == NULL) { |
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mg_ehand[MG_E_CONE] = e_cone; |
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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_RING] == NULL) { |
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mg_ehand[MG_E_RING] = e_ring; |
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ineed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX; |
104 |
> |
ineed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX; |
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} else |
106 |
< |
uneed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX|1<<MG_E_XF; |
106 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
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if (mg_ehand[MG_E_PRISM] == NULL) { |
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mg_ehand[MG_E_PRISM] = e_prism; |
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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; |
111 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
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if (mg_ehand[MG_E_TORUS] == NULL) { |
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mg_ehand[MG_E_TORUS] = e_torus; |
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< |
ineed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX; |
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ineed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX; |
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} else |
116 |
< |
uneed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX|1<<MG_E_XF; |
116 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
117 |
> |
if (mg_ehand[MG_E_FACE] == NULL) |
118 |
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mg_ehand[MG_E_FACE] = mg_ehand[MG_E_FACEH]; |
119 |
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else if (mg_ehand[MG_E_FACEH] == NULL) |
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mg_ehand[MG_E_FACEH] = e_faceh; |
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if (mg_ehand[MG_E_COLOR] != NULL) { |
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if (mg_ehand[MG_E_CMIX] == NULL) { |
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mg_ehand[MG_E_CMIX] = e_cmix; |
124 |
< |
ineed |= 1<<MG_E_COLOR|1<<MG_E_CXY|1<<MG_E_CSPEC|1<<MG_E_CMIX; |
124 |
> |
ineed |= 1L<<MG_E_COLOR|1L<<MG_E_CXY|1L<<MG_E_CSPEC|1L<<MG_E_CMIX|1L<<MG_E_CCT; |
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} |
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if (mg_ehand[MG_E_CSPEC] == NULL) { |
127 |
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mg_ehand[MG_E_CSPEC] = e_cspec; |
128 |
< |
ineed |= 1<<MG_E_COLOR|1<<MG_E_CXY|1<<MG_E_CSPEC|1<<MG_E_CMIX; |
128 |
> |
ineed |= 1L<<MG_E_COLOR|1L<<MG_E_CXY|1L<<MG_E_CSPEC|1L<<MG_E_CMIX|1L<<MG_E_CCT; |
129 |
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} |
130 |
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if (mg_ehand[MG_E_CCT] == NULL) { |
131 |
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mg_ehand[MG_E_CCT] = e_cct; |
132 |
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ineed |= 1L<<MG_E_COLOR|1L<<MG_E_CXY|1L<<MG_E_CSPEC|1L<<MG_E_CMIX|1L<<MG_E_CCT; |
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} |
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} |
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/* check for consistency */ |
136 |
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if (mg_ehand[MG_E_FACE] != NULL) |
137 |
< |
uneed |= 1<<MG_E_POINT|1<<MG_E_VERTEX|1<<MG_E_XF; |
137 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
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if (mg_ehand[MG_E_CXY] != NULL || mg_ehand[MG_E_CSPEC] != NULL || |
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mg_ehand[MG_E_CMIX] != NULL) |
140 |
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uneed |= 1<<MG_E_COLOR; |
140 |
> |
uneed |= 1L<<MG_E_COLOR; |
141 |
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if (mg_ehand[MG_E_RD] != NULL || mg_ehand[MG_E_TD] != NULL || |
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mg_ehand[MG_E_IR] != NULL || |
143 |
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mg_ehand[MG_E_ED] != NULL || |
144 |
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mg_ehand[MG_E_RS] != NULL || |
145 |
< |
mg_ehand[MG_E_TS] != NULL) |
146 |
< |
uneed |= 1<<MG_E_MATERIAL; |
145 |
> |
mg_ehand[MG_E_TS] != NULL || |
146 |
> |
mg_ehand[MG_E_SIDES] != NULL) |
147 |
> |
uneed |= 1L<<MG_E_MATERIAL; |
148 |
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for (i = 0; i < MG_NENTITIES; i++) |
149 |
< |
if (uneed & 1<<i && mg_ehand[i] == NULL) { |
149 |
> |
if (uneed & 1L<<i && mg_ehand[i] == NULL) { |
150 |
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fprintf(stderr, "Missing support for \"%s\" entity\n", |
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mg_ename[i]); |
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exit(1); |
153 |
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} |
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/* add support as needed */ |
155 |
< |
if (ineed & 1<<MG_E_VERTEX && mg_ehand[MG_E_VERTEX] != c_hvertex) |
155 |
> |
if (ineed & 1L<<MG_E_VERTEX && mg_ehand[MG_E_VERTEX] != c_hvertex) |
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e_supp[MG_E_VERTEX] = c_hvertex; |
157 |
< |
if (ineed & 1<<MG_E_POINT && mg_ehand[MG_E_POINT] != c_hvertex) |
157 |
> |
if (ineed & 1L<<MG_E_POINT && mg_ehand[MG_E_POINT] != c_hvertex) |
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e_supp[MG_E_POINT] = c_hvertex; |
159 |
< |
if (ineed & 1<<MG_E_NORMAL && mg_ehand[MG_E_NORMAL] != c_hvertex) |
159 |
> |
if (ineed & 1L<<MG_E_NORMAL && mg_ehand[MG_E_NORMAL] != c_hvertex) |
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e_supp[MG_E_NORMAL] = c_hvertex; |
161 |
< |
if (ineed & 1<<MG_E_COLOR && mg_ehand[MG_E_COLOR] != c_hcolor) |
161 |
> |
if (ineed & 1L<<MG_E_COLOR && mg_ehand[MG_E_COLOR] != c_hcolor) |
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e_supp[MG_E_COLOR] = c_hcolor; |
163 |
< |
if (ineed & 1<<MG_E_CXY && mg_ehand[MG_E_CXY] != c_hcolor) |
163 |
> |
if (ineed & 1L<<MG_E_CXY && mg_ehand[MG_E_CXY] != c_hcolor) |
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e_supp[MG_E_CXY] = c_hcolor; |
165 |
< |
if (ineed & 1<<MG_E_CSPEC && mg_ehand[MG_E_CSPEC] != c_hcolor) |
165 |
> |
if (ineed & 1L<<MG_E_CSPEC && mg_ehand[MG_E_CSPEC] != c_hcolor) |
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e_supp[MG_E_CSPEC] = c_hcolor; |
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< |
if (ineed & 1<<MG_E_CMIX && mg_ehand[MG_E_CMIX] != c_hcolor) |
167 |
> |
if (ineed & 1L<<MG_E_CMIX && mg_ehand[MG_E_CMIX] != c_hcolor) |
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e_supp[MG_E_CMIX] = c_hcolor; |
169 |
+ |
if (ineed & 1L<<MG_E_CCT && mg_ehand[MG_E_CCT] != c_hcolor) |
170 |
+ |
e_supp[MG_E_CCT] = c_hcolor; |
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/* discard remaining entities */ |
172 |
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for (i = 0; i < MG_NENTITIES; i++) |
173 |
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if (mg_ehand[i] == NULL) |
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} |
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177 |
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|
178 |
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int |
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mg_entity(name) /* get entity number from its name */ |
180 |
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char *name; |
204 |
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{ |
205 |
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int rv; |
206 |
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|
207 |
< |
if (en < 0 && (en = mg_entity(av[0])) < 0) |
207 |
> |
if (en < 0 && (en = mg_entity(av[0])) < 0) { /* unknown entity */ |
208 |
> |
if (mg_uhand != NULL) |
209 |
> |
return((*mg_uhand)(ac, av)); |
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return(MG_EUNK); |
211 |
< |
if (e_supp[en] != NULL) { |
211 |
> |
} |
212 |
> |
if (e_supp[en] != NULL) { /* support handler */ |
213 |
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if ((rv = (*e_supp[en])(ac, av)) != MG_OK) |
214 |
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return(rv); |
215 |
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} |
216 |
< |
return((*mg_ehand[en])(ac, av)); |
216 |
> |
return((*mg_ehand[en])(ac, av)); /* assigned handler */ |
217 |
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} |
218 |
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|
219 |
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|
223 |
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char *fn; |
224 |
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{ |
225 |
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static int nfids; |
214 |
– |
int olen; |
226 |
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register char *cp; |
227 |
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|
228 |
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ctx->fid = ++nfids; |
235 |
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return(MG_OK); |
236 |
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} |
237 |
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/* get name relative to this context */ |
238 |
< |
if (mg_file != NULL && |
239 |
< |
(cp = strrchr(mg_file->fname, '/')) != NULL) |
229 |
< |
olen = cp - mg_file->fname + 1; |
230 |
< |
else |
231 |
< |
olen = 0; |
232 |
< |
if (olen) |
238 |
> |
if (fn[0] != '/' && mg_file != NULL && |
239 |
> |
(cp = strrchr(mg_file->fname, '/')) != NULL) { |
240 |
|
strcpy(ctx->fname, mg_file->fname); |
241 |
< |
strcpy(ctx->fname+olen, fn); |
241 |
> |
strcpy(ctx->fname+(cp-mg_file->fname+1), fn); |
242 |
> |
} else |
243 |
> |
strcpy(ctx->fname, fn); |
244 |
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ctx->fp = fopen(ctx->fname, "r"); |
245 |
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if (ctx->fp == NULL) |
246 |
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return(MG_ENOFILE); |
256 |
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register MG_FCTXT *ctx = mg_file; |
257 |
|
|
258 |
|
mg_file = ctx->prev; /* restore enclosing context */ |
259 |
< |
if (ctx->fp == stdin) |
260 |
< |
return; /* don't close standard input */ |
252 |
< |
fclose(ctx->fp); |
259 |
> |
if (ctx->fp != stdin) /* close file if it's a file */ |
260 |
> |
fclose(ctx->fp); |
261 |
|
} |
262 |
|
|
263 |
|
|
265 |
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mg_fgetpos(pos) /* get current position in input file */ |
266 |
|
register MG_FPOS *pos; |
267 |
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{ |
260 |
– |
extern long ftell(); |
261 |
– |
|
268 |
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pos->fid = mg_file->fid; |
269 |
|
pos->lineno = mg_file->lineno; |
270 |
|
pos->offset = ftell(mg_file->fp); |
297 |
|
if (fgets(mg_file->inpline+len, |
298 |
|
MG_MAXLINE-len, mg_file->fp) == NULL) |
299 |
|
return(len); |
294 |
– |
mg_file->lineno++; |
300 |
|
len += strlen(mg_file->inpline+len); |
301 |
< |
if (len > 1 && mg_file->inpline[len-2] == '\\') |
302 |
< |
mg_file->inpline[--len-1] = ' '; |
303 |
< |
} while (mg_file->inpline[len]); |
301 |
> |
if (len >= MG_MAXLINE-1) |
302 |
> |
return(len); |
303 |
> |
mg_file->lineno++; |
304 |
> |
} while (len > 1 && mg_file->inpline[len-2] == '\\'); |
305 |
|
|
306 |
|
return(len); |
307 |
|
} |
312 |
|
{ |
313 |
|
char abuf[MG_MAXLINE]; |
314 |
|
char *argv[MG_MAXARGC]; |
315 |
< |
int en; |
316 |
< |
register char *cp, **ap; |
317 |
< |
|
318 |
< |
strcpy(cp=abuf, mg_file->inpline); |
319 |
< |
ap = argv; /* break into words */ |
315 |
> |
register char *cp, *cp2, **ap; |
316 |
> |
/* copy line, removing escape chars */ |
317 |
> |
cp = abuf; cp2 = mg_file->inpline; |
318 |
> |
while ((*cp++ = *cp2++)) |
319 |
> |
if (cp2[0] == '\n' && cp2[-1] == '\\') |
320 |
> |
cp--; |
321 |
> |
cp = abuf; ap = argv; /* break into words */ |
322 |
|
for ( ; ; ) { |
323 |
|
while (isspace(*cp)) |
324 |
|
*cp++ = '\0'; |
344 |
|
{ |
345 |
|
MG_FCTXT cntxt; |
346 |
|
int rval; |
347 |
+ |
register int nbr; |
348 |
|
|
349 |
|
if ((rval = mg_open(&cntxt, fn)) != MG_OK) { |
350 |
|
fprintf(stderr, "%s: %s\n", fn, mg_err[rval]); |
351 |
|
return(rval); |
352 |
|
} |
353 |
< |
while (mg_read()) /* parse each line */ |
353 |
> |
while ((nbr = mg_read()) > 0) { /* parse each line */ |
354 |
> |
if (nbr >= MG_MAXLINE-1) { |
355 |
> |
fprintf(stderr, "%s: %d: %s\n", cntxt.fname, |
356 |
> |
cntxt.lineno, mg_err[rval=MG_ELINE]); |
357 |
> |
break; |
358 |
> |
} |
359 |
|
if ((rval = mg_parse()) != MG_OK) { |
360 |
|
fprintf(stderr, "%s: %d: %s:\n%s", cntxt.fname, |
361 |
|
cntxt.lineno, mg_err[rval], |
362 |
|
cntxt.inpline); |
363 |
|
break; |
364 |
|
} |
365 |
+ |
} |
366 |
|
mg_close(); |
367 |
|
return(rval); |
368 |
|
} |
369 |
|
|
370 |
|
|
371 |
+ |
int |
372 |
+ |
mg_defuhand(ac, av) /* default handler for unknown entities */ |
373 |
+ |
int ac; |
374 |
+ |
char **av; |
375 |
+ |
{ |
376 |
+ |
if (mg_nunknown++ == 0) /* report first incident */ |
377 |
+ |
fprintf(stderr, "%s: %d: %s: %s\n", mg_file->fname, |
378 |
+ |
mg_file->lineno, mg_err[MG_EUNK], av[0]); |
379 |
+ |
return(MG_OK); |
380 |
+ |
} |
381 |
+ |
|
382 |
+ |
|
383 |
|
void |
384 |
|
mg_clear() /* clear parser history */ |
385 |
|
{ |
386 |
|
c_clearall(); /* clear context tables */ |
387 |
< |
mg_file = NULL; /* reset our context */ |
387 |
> |
while (mg_file != NULL) /* reset our file context */ |
388 |
> |
mg_close(); |
389 |
|
} |
390 |
|
|
391 |
|
|
403 |
|
} |
404 |
|
|
405 |
|
|
406 |
< |
static int |
406 |
> |
int |
407 |
|
e_include(ac, av) /* include file */ |
408 |
|
int ac; |
409 |
|
char **av; |
410 |
|
{ |
411 |
|
char *xfarg[MG_MAXARGC]; |
412 |
|
MG_FCTXT ictx; |
413 |
< |
int rv; |
413 |
> |
XF_SPEC *xf_orig = xf_context; |
414 |
> |
register int rv; |
415 |
|
|
416 |
|
if (ac < 2) |
417 |
|
return(MG_EARGC); |
424 |
|
for (i = 1; i < ac-1; i++) |
425 |
|
xfarg[i] = av[i+1]; |
426 |
|
xfarg[ac-1] = NULL; |
427 |
< |
if ((rv = mg_handle(MG_E_XF, ac-1, xfarg)) != MG_OK) |
427 |
> |
if ((rv = mg_handle(MG_E_XF, ac-1, xfarg)) != MG_OK) { |
428 |
> |
mg_close(); |
429 |
|
return(rv); |
430 |
+ |
} |
431 |
|
} |
432 |
< |
while (!feof(mg_file->fp)) { |
433 |
< |
while (mg_read()) |
432 |
> |
do { |
433 |
> |
while ((rv = mg_read()) > 0) { |
434 |
> |
if (rv >= MG_MAXLINE-1) { |
435 |
> |
fprintf(stderr, "%s: %d: %s\n", ictx.fname, |
436 |
> |
ictx.lineno, mg_err[MG_ELINE]); |
437 |
> |
mg_close(); |
438 |
> |
return(MG_EINCL); |
439 |
> |
} |
440 |
|
if ((rv = mg_parse()) != MG_OK) { |
441 |
|
fprintf(stderr, "%s: %d: %s:\n%s", ictx.fname, |
442 |
|
ictx.lineno, mg_err[rv], |
444 |
|
mg_close(); |
445 |
|
return(MG_EINCL); |
446 |
|
} |
447 |
+ |
} |
448 |
|
if (ac > 2) |
449 |
< |
if ((rv = mg_handle(MG_E_XF, 1, xfarg)) != MG_OK) |
449 |
> |
if ((rv = mg_handle(MG_E_XF, 1, xfarg)) != MG_OK) { |
450 |
> |
mg_close(); |
451 |
|
return(rv); |
452 |
< |
} |
452 |
> |
} |
453 |
> |
} while (xf_context != xf_orig); |
454 |
|
mg_close(); |
455 |
|
return(MG_OK); |
456 |
|
} |
457 |
|
|
458 |
|
|
459 |
+ |
int |
460 |
+ |
e_faceh(ac, av) /* replace face+holes with single contour */ |
461 |
+ |
int ac; |
462 |
+ |
char **av; |
463 |
+ |
{ |
464 |
+ |
char *newav[MG_MAXARGC]; |
465 |
+ |
int lastp = 0; |
466 |
+ |
register int i, j; |
467 |
+ |
|
468 |
+ |
newav[0] = mg_ename[MG_E_FACE]; |
469 |
+ |
for (i = 1; i < ac; i++) |
470 |
+ |
if (av[i][0] == '-') { |
471 |
+ |
if (i < 4) |
472 |
+ |
return(MG_EARGC); |
473 |
+ |
if (i >= ac-1) |
474 |
+ |
break; |
475 |
+ |
if (!lastp) |
476 |
+ |
lastp = i-1; |
477 |
+ |
for (j = i+1; j < ac-1 && av[j+1][0] != '-'; j++) |
478 |
+ |
; |
479 |
+ |
if (j - i < 3) |
480 |
+ |
return(MG_EARGC); |
481 |
+ |
newav[i] = av[j]; /* connect hole loop */ |
482 |
+ |
} else |
483 |
+ |
newav[i] = av[i]; /* hole or perimeter vertex */ |
484 |
+ |
if (lastp) |
485 |
+ |
newav[i++] = av[lastp]; /* finish seam to outside */ |
486 |
+ |
newav[i] = NULL; |
487 |
+ |
return(mg_handle(MG_E_FACE, i, newav)); |
488 |
+ |
} |
489 |
+ |
|
490 |
+ |
|
491 |
|
static void |
492 |
|
make_axes(u, v, w) /* compute u and v given w (normalized) */ |
493 |
|
FVECT u, v, w; |
505 |
|
} |
506 |
|
|
507 |
|
|
508 |
< |
static int |
508 |
> |
int |
509 |
|
e_sph(ac, av) /* expand a sphere into cones */ |
510 |
|
int ac; |
511 |
|
char **av; |
557 |
|
} |
558 |
|
|
559 |
|
|
560 |
< |
static int |
560 |
> |
int |
561 |
|
e_torus(ac, av) /* expand a torus into cones */ |
562 |
|
int ac; |
563 |
|
char **av; |
649 |
|
} |
650 |
|
|
651 |
|
|
652 |
< |
static int |
652 |
> |
int |
653 |
|
e_cyl(ac, av) /* replace a cylinder with equivalent cone */ |
654 |
|
int ac; |
655 |
|
char **av; |
666 |
|
} |
667 |
|
|
668 |
|
|
669 |
< |
static int |
669 |
> |
int |
670 |
|
e_ring(ac, av) /* turn a ring into polygons */ |
671 |
|
int ac; |
672 |
|
char **av; |
764 |
|
} |
765 |
|
|
766 |
|
|
767 |
< |
static int |
767 |
> |
int |
768 |
|
e_cone(ac, av) /* turn a cone into polygons */ |
769 |
|
int ac; |
770 |
|
char **av; |
779 |
|
static char *p4ent[5] = {mg_ename[MG_E_POINT],p4[0],p4[1],p4[2]}; |
780 |
|
static char *n4ent[5] = {mg_ename[MG_E_NORMAL],n4[0],n4[1],n4[2]}; |
781 |
|
static char *fent[6] = {mg_ename[MG_E_FACE],"_cv1","_cv2","_cv3","_cv4"}; |
782 |
+ |
char *v1n; |
783 |
|
register C_VERTEX *cv1, *cv2; |
784 |
|
register int i, j; |
785 |
|
FVECT u, v, w; |
795 |
|
if ((cv1 = c_getvert(av[1])) == NULL || |
796 |
|
(cv2 = c_getvert(av[3])) == NULL) |
797 |
|
return(MG_EUNDEF); |
798 |
+ |
v1n = av[1]; |
799 |
|
if (!isflt(av[2]) || !isflt(av[4])) |
800 |
|
return(MG_ETYPE); |
801 |
|
rad1 = atof(av[2]); |
806 |
|
if (rad2 == 0.) |
807 |
|
return(MG_EILL); |
808 |
|
} else if (rad2 != 0.) { |
809 |
< |
if (rad1 < 0. ^ rad2 < 0.) |
809 |
> |
if ((rad1 < 0.) ^ (rad2 < 0.)) |
810 |
|
return(MG_EILL); |
811 |
|
} else { /* swap */ |
812 |
|
C_VERTEX *cv; |
814 |
|
cv = cv1; |
815 |
|
cv1 = cv2; |
816 |
|
cv2 = cv; |
817 |
+ |
v1n = av[3]; |
818 |
|
d = rad1; |
819 |
|
rad1 = rad2; |
820 |
|
rad2 = d; |
848 |
|
if ((rv = mg_handle(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
849 |
|
return(rv); |
850 |
|
if (rad1 == 0.) { /* triangles */ |
851 |
< |
v1ent[3] = av[1]; |
851 |
> |
v1ent[3] = v1n; |
852 |
|
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
853 |
|
return(rv); |
854 |
|
for (j = 0; j < 3; j++) |
934 |
|
} |
935 |
|
|
936 |
|
|
937 |
< |
static int |
937 |
> |
int |
938 |
|
e_prism(ac, av) /* turn a prism into polygons */ |
939 |
|
int ac; |
940 |
|
char **av; |
941 |
|
{ |
942 |
|
static char p[3][24]; |
943 |
< |
static char *vent[4] = {mg_ename[MG_E_VERTEX],NULL,"="}; |
943 |
> |
static char *vent[5] = {mg_ename[MG_E_VERTEX],NULL,"="}; |
944 |
|
static char *pent[5] = {mg_ename[MG_E_POINT],p[0],p[1],p[2]}; |
945 |
+ |
static char *znorm[5] = {mg_ename[MG_E_NORMAL],"0","0","0"}; |
946 |
|
char *newav[MG_MAXARGC], nvn[MG_MAXARGC-1][8]; |
947 |
|
double length; |
948 |
+ |
int hasnorm; |
949 |
|
FVECT v1, v2, v3, norm; |
950 |
|
register C_VERTEX *cv; |
951 |
|
C_VERTEX *cv0; |
952 |
|
int rv; |
953 |
|
register int i, j; |
954 |
< |
|
954 |
> |
/* check arguments */ |
955 |
|
if (ac < 5) |
956 |
|
return(MG_EARGC); |
957 |
|
if (!isflt(av[ac-1])) |
959 |
|
length = atof(av[ac-1]); |
960 |
|
if (length <= FTINY && length >= -FTINY) |
961 |
|
return(MG_EILL); |
962 |
< |
/* do bottom face */ |
886 |
< |
newav[0] = mg_ename[MG_E_FACE]; |
887 |
< |
for (i = 1; i < ac-1; i++) |
888 |
< |
newav[i] = av[i]; |
889 |
< |
newav[i] = NULL; |
890 |
< |
if ((rv = mg_handle(MG_E_FACE, i, newav)) != MG_OK) |
891 |
< |
return(rv); |
892 |
< |
/* compute face normal */ |
962 |
> |
/* compute face normal */ |
963 |
|
if ((cv0 = c_getvert(av[1])) == NULL) |
964 |
|
return(MG_EUNDEF); |
965 |
+ |
hasnorm = 0; |
966 |
|
norm[0] = norm[1] = norm[2] = 0.; |
967 |
|
v1[0] = v1[1] = v1[2] = 0.; |
968 |
|
for (i = 2; i < ac-1; i++) { |
969 |
|
if ((cv = c_getvert(av[i])) == NULL) |
970 |
|
return(MG_EUNDEF); |
971 |
+ |
hasnorm += !is0vect(cv->n); |
972 |
|
v2[0] = cv->p[0] - cv0->p[0]; |
973 |
|
v2[1] = cv->p[1] - cv0->p[1]; |
974 |
|
v2[2] = cv->p[2] - cv0->p[2]; |
980 |
|
} |
981 |
|
if (normalize(norm) == 0.) |
982 |
|
return(MG_EILL); |
983 |
< |
/* create moved vertices */ |
983 |
> |
/* create moved vertices */ |
984 |
|
for (i = 1; i < ac-1; i++) { |
985 |
|
sprintf(nvn[i-1], "_pv%d", i); |
986 |
|
vent[1] = nvn[i-1]; |
987 |
< |
if ((rv = mg_handle(MG_E_VERTEX, 3, vent)) != MG_OK) |
987 |
> |
vent[3] = av[i]; |
988 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, vent)) != MG_OK) |
989 |
|
return(rv); |
990 |
|
cv = c_getvert(av[i]); /* checked above */ |
991 |
|
for (j = 0; j < 3; j++) |
992 |
|
sprintf(p[j], FLTFMT, cv->p[j] - length*norm[j]); |
993 |
|
if ((rv = mg_handle(MG_E_POINT, 4, pent)) != MG_OK) |
994 |
|
return(rv); |
922 |
– |
newav[ac-1-i] = nvn[i-1]; /* reverse */ |
995 |
|
} |
996 |
< |
/* do top face */ |
997 |
< |
if ((rv = mg_handle(MG_E_FACE, ac-1, newav)) != MG_OK) |
926 |
< |
return(rv); |
996 |
> |
/* make faces */ |
997 |
> |
newav[0] = mg_ename[MG_E_FACE]; |
998 |
|
/* do the side faces */ |
999 |
|
newav[5] = NULL; |
1000 |
|
newav[3] = av[ac-2]; |
1007 |
|
newav[3] = newav[2]; |
1008 |
|
newav[4] = newav[1]; |
1009 |
|
} |
1010 |
+ |
/* do top face */ |
1011 |
+ |
for (i = 1; i < ac-1; i++) { |
1012 |
+ |
if (hasnorm) { /* zero normals */ |
1013 |
+ |
vent[1] = nvn[i-1]; |
1014 |
+ |
if ((rv = mg_handle(MG_E_VERTEX, 2, vent)) != MG_OK) |
1015 |
+ |
return(rv); |
1016 |
+ |
if ((rv = mg_handle(MG_E_NORMAL, 4, znorm)) != MG_OK) |
1017 |
+ |
return(rv); |
1018 |
+ |
} |
1019 |
+ |
newav[ac-1-i] = nvn[i-1]; /* reverse */ |
1020 |
+ |
} |
1021 |
+ |
if ((rv = mg_handle(MG_E_FACE, ac-1, newav)) != MG_OK) |
1022 |
+ |
return(rv); |
1023 |
+ |
/* do bottom face */ |
1024 |
+ |
if (hasnorm) |
1025 |
+ |
for (i = 1; i < ac-1; i++) { |
1026 |
+ |
vent[1] = nvn[i-1]; |
1027 |
+ |
vent[3] = av[i]; |
1028 |
+ |
if ((rv = mg_handle(MG_E_VERTEX, 4, vent)) != MG_OK) |
1029 |
+ |
return(rv); |
1030 |
+ |
if ((rv = mg_handle(MG_E_NORMAL, 4, znorm)) != MG_OK) |
1031 |
+ |
return(rv); |
1032 |
+ |
newav[i] = nvn[i-1]; |
1033 |
+ |
} |
1034 |
+ |
else |
1035 |
+ |
for (i = 1; i < ac-1; i++) |
1036 |
+ |
newav[i] = av[i]; |
1037 |
+ |
newav[i] = NULL; |
1038 |
+ |
if ((rv = mg_handle(MG_E_FACE, i, newav)) != MG_OK) |
1039 |
+ |
return(rv); |
1040 |
|
return(MG_OK); |
1041 |
|
} |
1042 |
|
|
1043 |
|
|
1044 |
|
static int |
1045 |
< |
e_cspec(ac, av) /* handle spectral color */ |
945 |
< |
int ac; |
946 |
< |
char **av; |
1045 |
> |
put_cxy() /* put out current xy chromaticities */ |
1046 |
|
{ |
1047 |
|
static char xbuf[24], ybuf[24]; |
1048 |
|
static char *ccom[4] = {mg_ename[MG_E_CXY], xbuf, ybuf}; |
950 |
– |
int rv; |
1049 |
|
|
1050 |
+ |
sprintf(xbuf, "%.4f", c_ccolor->cx); |
1051 |
+ |
sprintf(ybuf, "%.4f", c_ccolor->cy); |
1052 |
+ |
return(mg_handle(MG_E_CXY, 3, ccom)); |
1053 |
+ |
} |
1054 |
+ |
|
1055 |
+ |
|
1056 |
+ |
static int |
1057 |
+ |
put_cspec() /* put out current color spectrum */ |
1058 |
+ |
{ |
1059 |
+ |
char wl[2][6], vbuf[C_CNSS][24]; |
1060 |
+ |
char *newav[C_CNSS+4]; |
1061 |
+ |
double sf; |
1062 |
+ |
register int i; |
1063 |
+ |
|
1064 |
+ |
if (mg_ehand[MG_E_CSPEC] != c_hcolor) { |
1065 |
+ |
sprintf(wl[0], "%d", C_CMINWL); |
1066 |
+ |
sprintf(wl[1], "%d", C_CMAXWL); |
1067 |
+ |
newav[0] = mg_ename[MG_E_CSPEC]; |
1068 |
+ |
newav[1] = wl[0]; |
1069 |
+ |
newav[2] = wl[1]; |
1070 |
+ |
sf = (double)C_CNSS / c_ccolor->ssum; |
1071 |
+ |
for (i = 0; i < C_CNSS; i++) { |
1072 |
+ |
sprintf(vbuf[i], "%.4f", sf*c_ccolor->ssamp[i]); |
1073 |
+ |
newav[i+3] = vbuf[i]; |
1074 |
+ |
} |
1075 |
+ |
newav[C_CNSS+3] = NULL; |
1076 |
+ |
if ((i = mg_handle(MG_E_CSPEC, C_CNSS+3, newav)) != MG_OK) |
1077 |
+ |
return(i); |
1078 |
+ |
} |
1079 |
+ |
return(MG_OK); |
1080 |
+ |
} |
1081 |
+ |
|
1082 |
+ |
|
1083 |
+ |
static int |
1084 |
+ |
e_cspec(ac, av) /* handle spectral color */ |
1085 |
+ |
int ac; |
1086 |
+ |
char **av; |
1087 |
+ |
{ |
1088 |
+ |
/* convert to xy chromaticity */ |
1089 |
|
c_ccvt(c_ccolor, C_CSXY); |
1090 |
|
/* if it's really their handler, use it */ |
1091 |
< |
if (mg_ehand[MG_E_CXY] != c_hcolor) { |
1092 |
< |
sprintf(xbuf, "%.4f", c_ccolor->cx); |
956 |
< |
sprintf(ybuf, "%.4f", c_ccolor->cy); |
957 |
< |
if ((rv = mg_handle(MG_E_CXY, 3, ccom)) != MG_OK) |
958 |
< |
return(rv); |
959 |
< |
} |
1091 |
> |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1092 |
> |
return(put_cxy()); |
1093 |
|
return(MG_OK); |
1094 |
|
} |
1095 |
|
|
1099 |
|
int ac; |
1100 |
|
char **av; |
1101 |
|
{ |
969 |
– |
char wl[2][6], vbuf[C_CNSS][24]; |
970 |
– |
char *newav[C_CNSS+4]; |
971 |
– |
int rv; |
972 |
– |
register int i; |
1102 |
|
/* |
1103 |
|
* Contorted logic works as follows: |
1104 |
|
* 1. the colors are already mixed in c_hcolor() support function |
1109 |
|
*/ |
1110 |
|
if (mg_ehand[MG_E_CSPEC] == e_cspec) |
1111 |
|
c_ccvt(c_ccolor, C_CSXY); |
1112 |
< |
else if (c_ccolor->flags & C_CDSPEC) { |
1113 |
< |
if (mg_ehand[MG_E_CSPEC] != c_hcolor) { |
1114 |
< |
sprintf(wl[0], "%d", C_CMINWL); |
1115 |
< |
sprintf(wl[1], "%d", C_CMAXWL); |
1116 |
< |
newav[0] = mg_ename[MG_E_CSPEC]; |
1117 |
< |
newav[1] = wl[0]; |
1118 |
< |
newav[2] = wl[1]; |
1119 |
< |
for (i = 0; i < C_CNSS; i++) { |
1120 |
< |
sprintf(vbuf[i], "%.6f", |
1121 |
< |
(double)c_ccolor->ssamp[i] / |
1122 |
< |
c_ccolor->ssum); |
1123 |
< |
newav[i+3] = vbuf[i]; |
1124 |
< |
} |
1125 |
< |
newav[C_CNSS+3] = NULL; |
1126 |
< |
if ((rv = mg_handle(MG_E_CSPEC, C_CNSS+3, newav)) != MG_OK) |
1127 |
< |
return(rv); |
1128 |
< |
} |
1129 |
< |
return(MG_OK); |
1130 |
< |
} |
1131 |
< |
if (mg_ehand[MG_E_CXY] != c_hcolor) { |
1132 |
< |
sprintf(vbuf[0], "%.4f", c_ccolor->cx); |
1133 |
< |
sprintf(vbuf[1], "%.4f", c_ccolor->cy); |
1134 |
< |
newav[0] = mg_ename[MG_E_CXY]; |
1135 |
< |
newav[1] = vbuf[0]; |
1007 |
< |
newav[2] = vbuf[1]; |
1008 |
< |
newav[3] = NULL; |
1009 |
< |
if ((rv = mg_handle(MG_E_CXY, 3, newav)) != MG_OK) |
1010 |
< |
return(rv); |
1011 |
< |
} |
1112 |
> |
else if (c_ccolor->flags & C_CDSPEC) |
1113 |
> |
return(put_cspec()); |
1114 |
> |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1115 |
> |
return(put_cxy()); |
1116 |
> |
return(MG_OK); |
1117 |
> |
} |
1118 |
> |
|
1119 |
> |
|
1120 |
> |
static int |
1121 |
> |
e_cct(ac, av) /* handle color temperature */ |
1122 |
> |
int ac; |
1123 |
> |
char **av; |
1124 |
> |
{ |
1125 |
> |
/* |
1126 |
> |
* Logic is similar to e_cmix here. Support handler has already |
1127 |
> |
* converted temperature to spectral color. Put it out as such |
1128 |
> |
* if they support it, otherwise convert to xy chromaticity and |
1129 |
> |
* put it out if they handle it. |
1130 |
> |
*/ |
1131 |
> |
if (mg_ehand[MG_E_CSPEC] != e_cspec) |
1132 |
> |
return(put_cspec()); |
1133 |
> |
c_ccvt(c_ccolor, C_CSXY); |
1134 |
> |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1135 |
> |
return(put_cxy()); |
1136 |
|
return(MG_OK); |
1137 |
|
} |