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/* Copyright (c) 1994 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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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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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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int (*mg_ehand[MG_NENTITIES])(); |
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|
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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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char *mg_err[MG_NERRS] = MG_ERRLIST; |
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/* temporary settings for testing */ |
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#define e_ies e_any_toss |
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#define e_cmix e_any_toss |
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#define e_cspec e_any_toss |
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/* alternate handler routines */ |
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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_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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static void make_axes(FVECT u, FVECT v, FVECT w); |
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static int put_cxy(void); |
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static int put_cspec(void); |
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static int e_any_toss(int ac, char **av); /* discard an unwanted entity */ |
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static int e_cspec(int ac, char **av); /* handle spectral color */ |
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static int e_cmix(int ac, char **av); /* handle mixing of colors */ |
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static int e_cct(int ac, char **av); /* handle color temperature */ |
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|
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|
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/* alternate handler support functions */ |
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|
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static int (*e_supp[MG_NENTITIES])(); |
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static int (*e_supp[MG_NENTITIES])(int ac, char **av); |
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static char FLTFMT[] = "%.12g"; |
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void |
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mg_init() /* initialize alternate entity handlers */ |
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mg_init(void) /* initialize alternate entity handlers */ |
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{ |
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unsigned long ineed = 0, uneed = 0; |
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register int i; |
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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; |
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ineed |= 1L<<MG_E_POINT|1L<<MG_E_NORMAL|1L<<MG_E_VERTEX; |
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} else |
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uneed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX|1<<MG_E_XF; |
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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; |
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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_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 |
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uneed |= 1<<MG_E_POINT|1<<MG_E_NORMAL|1<<MG_E_VERTEX|1<<MG_E_XF; |
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> |
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_FACE] == NULL) |
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mg_ehand[MG_E_FACE] = mg_ehand[MG_E_FACEH]; |
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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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if (mg_ehand[MG_E_CMIX] == NULL) { |
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mg_ehand[MG_E_CMIX] = e_cmix; |
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if (mg_ehand[MG_E_CSPEC] == NULL) |
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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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if (mg_ehand[MG_E_CSPEC] == NULL) { |
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mg_ehand[MG_E_CSPEC] = e_cspec; |
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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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if (mg_ehand[MG_E_CCT] == NULL) { |
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mg_ehand[MG_E_CCT] = e_cct; |
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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 */ |
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if (mg_ehand[MG_E_FACE] != NULL) |
141 |
< |
uneed |= 1<<MG_E_POINT|1<<MG_E_VERTEX|1<<MG_E_XF; |
142 |
< |
if (mg_ehand[MG_E_CXY] != NULL) |
143 |
< |
uneed |= 1<<MG_E_COLOR; |
141 |
> |
uneed |= 1L<<MG_E_POINT|1L<<MG_E_VERTEX|1L<<MG_E_XF; |
142 |
> |
if (mg_ehand[MG_E_CXY] != NULL || mg_ehand[MG_E_CSPEC] != NULL || |
143 |
> |
mg_ehand[MG_E_CMIX] != NULL) |
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> |
uneed |= 1L<<MG_E_COLOR; |
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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 || |
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mg_ehand[MG_E_ED] != NULL || |
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mg_ehand[MG_E_RS] != NULL || |
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mg_ehand[MG_E_TS] != NULL) |
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< |
uneed |= 1<<MG_E_MATERIAL; |
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> |
mg_ehand[MG_E_TS] != NULL || |
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> |
mg_ehand[MG_E_SIDES] != NULL) |
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> |
uneed |= 1L<<MG_E_MATERIAL; |
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for (i = 0; i < MG_NENTITIES; i++) |
153 |
< |
if (uneed & 1<<i && mg_ehand[i] == NULL) { |
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> |
if (uneed & 1L<<i && mg_ehand[i] == NULL) { |
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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); |
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} |
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/* add support as needed */ |
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if (ineed & 1<<MG_E_VERTEX && mg_ehand[MG_E_VERTEX] != c_hvertex) |
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> |
if (ineed & 1L<<MG_E_VERTEX && mg_ehand[MG_E_VERTEX] != c_hvertex) |
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e_supp[MG_E_VERTEX] = c_hvertex; |
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if (ineed & 1<<MG_E_POINT && mg_ehand[MG_E_POINT] != c_hvertex) |
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> |
if (ineed & 1L<<MG_E_POINT && mg_ehand[MG_E_POINT] != c_hvertex) |
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e_supp[MG_E_POINT] = c_hvertex; |
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if (ineed & 1<<MG_E_NORMAL && mg_ehand[MG_E_NORMAL] != c_hvertex) |
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> |
if (ineed & 1L<<MG_E_NORMAL && mg_ehand[MG_E_NORMAL] != c_hvertex) |
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e_supp[MG_E_NORMAL] = c_hvertex; |
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+ |
if (ineed & 1L<<MG_E_COLOR && mg_ehand[MG_E_COLOR] != c_hcolor) |
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e_supp[MG_E_COLOR] = c_hcolor; |
167 |
+ |
if (ineed & 1L<<MG_E_CXY && mg_ehand[MG_E_CXY] != c_hcolor) |
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e_supp[MG_E_CXY] = c_hcolor; |
169 |
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if (ineed & 1L<<MG_E_CSPEC && mg_ehand[MG_E_CSPEC] != c_hcolor) |
170 |
+ |
e_supp[MG_E_CSPEC] = c_hcolor; |
171 |
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if (ineed & 1L<<MG_E_CMIX && mg_ehand[MG_E_CMIX] != c_hcolor) |
172 |
+ |
e_supp[MG_E_CMIX] = c_hcolor; |
173 |
+ |
if (ineed & 1L<<MG_E_CCT && mg_ehand[MG_E_CCT] != c_hcolor) |
174 |
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e_supp[MG_E_CCT] = c_hcolor; |
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/* discard remaining entities */ |
176 |
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for (i = 0; i < MG_NENTITIES; i++) |
177 |
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if (mg_ehand[i] == NULL) |
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} |
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|
182 |
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int |
183 |
< |
mg_entity(name) /* get entity number from its name */ |
184 |
< |
char *name; |
183 |
> |
mg_entity( /* get entity number from its name */ |
184 |
> |
char *name |
185 |
> |
) |
186 |
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{ |
187 |
< |
static LUTAB ent_tab; /* entity lookup table */ |
187 |
> |
static LUTAB ent_tab = LU_SINIT(NULL,NULL); /* lookup table */ |
188 |
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register char *cp; |
189 |
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|
190 |
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if (!ent_tab.tsiz) { /* initialize hash table */ |
201 |
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} |
202 |
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203 |
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204 |
< |
static int |
205 |
< |
handle_it(en, ac, av) /* pass entity to appropriate handler */ |
206 |
< |
register int en; |
207 |
< |
int ac; |
208 |
< |
char **av; |
204 |
> |
int |
205 |
> |
mg_handle( /* pass entity to appropriate handler */ |
206 |
> |
register int en, |
207 |
> |
int ac, |
208 |
> |
char **av |
209 |
> |
) |
210 |
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{ |
211 |
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int rv; |
212 |
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|
213 |
< |
if (en < 0 && (en = mg_entity(av[0])) < 0) |
213 |
> |
if (en < 0 && (en = mg_entity(av[0])) < 0) { /* unknown entity */ |
214 |
> |
if (mg_uhand != NULL) |
215 |
> |
return((*mg_uhand)(ac, av)); |
216 |
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return(MG_EUNK); |
217 |
< |
if (e_supp[en] != NULL) { |
217 |
> |
} |
218 |
> |
if (e_supp[en] != NULL) { /* support handler */ |
219 |
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if ((rv = (*e_supp[en])(ac, av)) != MG_OK) |
220 |
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return(rv); |
221 |
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} |
222 |
< |
return((*mg_ehand[en])(ac, av)); |
222 |
> |
return((*mg_ehand[en])(ac, av)); /* assigned handler */ |
223 |
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} |
224 |
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|
225 |
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|
226 |
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int |
227 |
< |
mg_open(ctx, fn) /* open new input file */ |
228 |
< |
register MG_FCTXT *ctx; |
229 |
< |
char *fn; |
227 |
> |
mg_open( /* open new input file */ |
228 |
> |
register MG_FCTXT *ctx, |
229 |
> |
char *fn |
230 |
> |
) |
231 |
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{ |
232 |
< |
int olen; |
232 |
> |
static int nfids; |
233 |
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register char *cp; |
234 |
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|
235 |
+ |
ctx->fid = ++nfids; |
236 |
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ctx->lineno = 0; |
237 |
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if (fn == NULL) { |
238 |
< |
ctx->fname = "<stdin>"; |
238 |
> |
strcpy(ctx->fname, "<stdin>"); |
239 |
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ctx->fp = stdin; |
240 |
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ctx->prev = mg_file; |
241 |
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mg_file = ctx; |
242 |
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return(MG_OK); |
243 |
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} |
244 |
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/* get name relative to this context */ |
245 |
< |
if (mg_file != NULL && |
246 |
< |
(cp = strrchr(mg_file->fname, '/')) != NULL) |
216 |
< |
olen = cp - mg_file->fname + 1; |
217 |
< |
else |
218 |
< |
olen = 0; |
219 |
< |
ctx->fname = (char *)malloc(olen+strlen(fn)+1); |
220 |
< |
if (ctx->fname == NULL) |
221 |
< |
return(MG_EMEM); |
222 |
< |
if (olen) |
245 |
> |
if (fn[0] != '/' && mg_file != NULL && |
246 |
> |
(cp = strrchr(mg_file->fname, '/')) != NULL) { |
247 |
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strcpy(ctx->fname, mg_file->fname); |
248 |
< |
strcpy(ctx->fname+olen, fn); |
248 |
> |
strcpy(ctx->fname+(cp-mg_file->fname+1), fn); |
249 |
> |
} else |
250 |
> |
strcpy(ctx->fname, fn); |
251 |
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ctx->fp = fopen(ctx->fname, "r"); |
252 |
< |
if (ctx->fp == NULL) { |
227 |
< |
free((MEM_PTR)ctx->fname); |
252 |
> |
if (ctx->fp == NULL) |
253 |
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return(MG_ENOFILE); |
229 |
– |
} |
254 |
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ctx->prev = mg_file; /* establish new context */ |
255 |
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mg_file = ctx; |
256 |
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return(MG_OK); |
258 |
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259 |
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|
260 |
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void |
261 |
< |
mg_close() /* close input file */ |
261 |
> |
mg_close(void) /* close input file */ |
262 |
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{ |
263 |
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register MG_FCTXT *ctx = mg_file; |
264 |
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|
265 |
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mg_file = ctx->prev; /* restore enclosing context */ |
266 |
< |
if (ctx->fp == stdin) |
267 |
< |
return; /* don't close standard input */ |
244 |
< |
fclose(ctx->fp); |
245 |
< |
free((MEM_PTR)ctx->fname); |
266 |
> |
if (ctx->fp != stdin) /* close file if it's a file */ |
267 |
> |
fclose(ctx->fp); |
268 |
|
} |
269 |
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|
270 |
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|
271 |
+ |
void |
272 |
+ |
mg_fgetpos( /* get current position in input file */ |
273 |
+ |
register MG_FPOS *pos |
274 |
+ |
) |
275 |
+ |
{ |
276 |
+ |
pos->fid = mg_file->fid; |
277 |
+ |
pos->lineno = mg_file->lineno; |
278 |
+ |
pos->offset = ftell(mg_file->fp); |
279 |
+ |
} |
280 |
+ |
|
281 |
+ |
|
282 |
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int |
283 |
< |
mg_rewind() /* rewind input file */ |
283 |
> |
mg_fgoto( /* reposition input file pointer */ |
284 |
> |
register MG_FPOS *pos |
285 |
> |
) |
286 |
|
{ |
287 |
< |
if (mg_file->lineno == 0) |
287 |
> |
if (pos->fid != mg_file->fid) |
288 |
> |
return(MG_ESEEK); |
289 |
> |
if (pos->lineno == mg_file->lineno) |
290 |
|
return(MG_OK); |
291 |
|
if (mg_file->fp == stdin) |
292 |
|
return(MG_ESEEK); /* cannot seek on standard input */ |
293 |
< |
if (fseek(mg_file->fp, 0L, 0) == EOF) |
293 |
> |
if (fseek(mg_file->fp, pos->offset, 0) == EOF) |
294 |
|
return(MG_ESEEK); |
295 |
< |
mg_file->lineno = 0; |
295 |
> |
mg_file->lineno = pos->lineno; |
296 |
|
return(MG_OK); |
297 |
|
} |
298 |
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|
299 |
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|
300 |
|
int |
301 |
< |
mg_read() /* read next line from file */ |
301 |
> |
mg_read(void) /* read next line from file */ |
302 |
|
{ |
303 |
|
register int len = 0; |
304 |
|
|
306 |
|
if (fgets(mg_file->inpline+len, |
307 |
|
MG_MAXLINE-len, mg_file->fp) == NULL) |
308 |
|
return(len); |
272 |
– |
mg_file->lineno++; |
309 |
|
len += strlen(mg_file->inpline+len); |
310 |
< |
if (len > 1 && mg_file->inpline[len-2] == '\\') |
311 |
< |
mg_file->inpline[--len-1] = ' '; |
312 |
< |
} while (mg_file->inpline[len]); |
310 |
> |
if (len >= MG_MAXLINE-1) |
311 |
> |
return(len); |
312 |
> |
mg_file->lineno++; |
313 |
> |
} while (len > 1 && mg_file->inpline[len-2] == '\\'); |
314 |
|
|
315 |
|
return(len); |
316 |
|
} |
317 |
|
|
318 |
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|
319 |
|
int |
320 |
< |
mg_parse() /* parse current input line */ |
320 |
> |
mg_parse(void) /* parse current input line */ |
321 |
|
{ |
322 |
|
char abuf[MG_MAXLINE]; |
323 |
|
char *argv[MG_MAXARGC]; |
324 |
< |
int en; |
325 |
< |
register char *cp, **ap; |
326 |
< |
|
327 |
< |
strcpy(cp=abuf, mg_file->inpline); |
328 |
< |
ap = argv; /* break into words */ |
324 |
> |
register char *cp, *cp2, **ap; |
325 |
> |
/* copy line, removing escape chars */ |
326 |
> |
cp = abuf; cp2 = mg_file->inpline; |
327 |
> |
while ((*cp++ = *cp2++)) |
328 |
> |
if (cp2[0] == '\n' && cp2[-1] == '\\') |
329 |
> |
cp--; |
330 |
> |
cp = abuf; ap = argv; /* break into words */ |
331 |
|
for ( ; ; ) { |
332 |
|
while (isspace(*cp)) |
333 |
|
*cp++ = '\0'; |
343 |
|
return(MG_OK); /* no words in line */ |
344 |
|
*ap = NULL; |
345 |
|
/* else handle it */ |
346 |
< |
return(handle_it(-1, ap-argv, argv)); |
346 |
> |
return(mg_handle(-1, ap-argv, argv)); |
347 |
|
} |
348 |
|
|
349 |
|
|
350 |
|
int |
351 |
< |
mg_load(fn) /* load an MGF file */ |
352 |
< |
char *fn; |
351 |
> |
mg_load( /* load an MGF file */ |
352 |
> |
char *fn |
353 |
> |
) |
354 |
|
{ |
355 |
|
MG_FCTXT cntxt; |
356 |
|
int rval; |
357 |
+ |
register int nbr; |
358 |
|
|
359 |
|
if ((rval = mg_open(&cntxt, fn)) != MG_OK) { |
360 |
|
fprintf(stderr, "%s: %s\n", fn, mg_err[rval]); |
361 |
|
return(rval); |
362 |
|
} |
363 |
< |
while (mg_read()) /* parse each line */ |
363 |
> |
while ((nbr = mg_read()) > 0) { /* parse each line */ |
364 |
> |
if (nbr >= MG_MAXLINE-1) { |
365 |
> |
fprintf(stderr, "%s: %d: %s\n", cntxt.fname, |
366 |
> |
cntxt.lineno, mg_err[rval=MG_ELINE]); |
367 |
> |
break; |
368 |
> |
} |
369 |
|
if ((rval = mg_parse()) != MG_OK) { |
370 |
|
fprintf(stderr, "%s: %d: %s:\n%s", cntxt.fname, |
371 |
|
cntxt.lineno, mg_err[rval], |
372 |
|
cntxt.inpline); |
373 |
|
break; |
374 |
|
} |
375 |
+ |
} |
376 |
|
mg_close(); |
377 |
|
return(rval); |
378 |
|
} |
379 |
|
|
380 |
|
|
381 |
< |
void |
382 |
< |
mg_clear() /* clear parser history */ |
381 |
> |
int |
382 |
> |
mg_defuhand( /* default handler for unknown entities */ |
383 |
> |
int ac, |
384 |
> |
char **av |
385 |
> |
) |
386 |
|
{ |
387 |
< |
c_clearall(); /* clear context tables */ |
388 |
< |
mg_file = NULL; /* reset our context */ |
387 |
> |
if (mg_nunknown++ == 0) /* report first incident */ |
388 |
> |
fprintf(stderr, "%s: %d: %s: %s\n", mg_file->fname, |
389 |
> |
mg_file->lineno, mg_err[MG_EUNK], av[0]); |
390 |
> |
return(MG_OK); |
391 |
|
} |
392 |
|
|
393 |
|
|
394 |
< |
int |
395 |
< |
mg_iterate(ac, av, f) /* iterate on statement */ |
344 |
< |
int ac; |
345 |
< |
register char **av; |
346 |
< |
int (*f)(); |
394 |
> |
void |
395 |
> |
mg_clear(void) /* clear parser history */ |
396 |
|
{ |
397 |
< |
int niter, rval; |
398 |
< |
register int i, j; |
399 |
< |
char *argv[MG_MAXARGC]; |
351 |
< |
char cntbuf[10]; |
352 |
< |
/* build partial transformation */ |
353 |
< |
for (i = 0; i < ac; i++) { |
354 |
< |
if (av[i][0] == '-' && av[i][1] == 'a' && av[i][2] == '\0') |
355 |
< |
break; |
356 |
< |
argv[i+1] = av[i]; |
357 |
< |
} |
358 |
< |
argv[i+1] = NULL; |
359 |
< |
if (i) { /* handle transformation */ |
360 |
< |
argv[0] = mg_ename[MG_E_XF]; |
361 |
< |
if ((rval = handle_it(MG_E_XF, i+1, argv)) != MG_OK) |
362 |
< |
return(rval); |
363 |
< |
} |
364 |
< |
if (i < ac) { /* run array */ |
365 |
< |
if (i+1 >= ac || !isint(av[i+1])) |
366 |
< |
return(MG_ETYPE); |
367 |
< |
niter = atoi(av[i+1]); |
368 |
< |
argv[0] = mg_ename[MG_E_OBJECT]; |
369 |
< |
argv[1] = cntbuf; |
370 |
< |
for (j = 2; j+i < ac; j++) |
371 |
< |
argv[j] = av[j+i]; |
372 |
< |
argv[j] = NULL; |
373 |
< |
for (j = 0; j < niter; j++) { |
374 |
< |
sprintf(cntbuf, "%d", j); |
375 |
< |
if ((rval = handle_it(MG_E_OBJECT, 2, argv)) != MG_OK) |
376 |
< |
return(rval); |
377 |
< |
argv[0] = "-i"; |
378 |
< |
if ((rval = mg_iterate(ac-i, argv, f)) != MG_OK) |
379 |
< |
return(rval); |
380 |
< |
argv[0] = mg_ename[MG_E_OBJECT]; |
381 |
< |
if ((rval = handle_it(MG_E_OBJECT, 1, argv)) != MG_OK) |
382 |
< |
return(rval); |
383 |
< |
} |
384 |
< |
} else if ((rval = (*f)()) != MG_OK) /* else do this instance */ |
385 |
< |
return(rval); |
386 |
< |
if (i) { /* reset the transform */ |
387 |
< |
argv[0] = mg_ename[MG_E_XF]; |
388 |
< |
argv[1] = NULL; |
389 |
< |
(void)handle_it(MG_E_XF, 1, argv); |
390 |
< |
} |
391 |
< |
return(MG_OK); |
397 |
> |
c_clearall(); /* clear context tables */ |
398 |
> |
while (mg_file != NULL) /* reset our file context */ |
399 |
> |
mg_close(); |
400 |
|
} |
401 |
|
|
402 |
|
|
406 |
|
|
407 |
|
|
408 |
|
static int |
409 |
< |
e_any_toss(ac, av) /* discard an unwanted entity */ |
410 |
< |
int ac; |
411 |
< |
char **av; |
409 |
> |
e_any_toss( /* discard an unwanted entity */ |
410 |
> |
int ac, |
411 |
> |
char **av |
412 |
> |
) |
413 |
|
{ |
414 |
|
return(MG_OK); |
415 |
|
} |
416 |
|
|
417 |
|
|
418 |
< |
static int |
419 |
< |
reload_file() /* reload current MGF file */ |
418 |
> |
int |
419 |
> |
e_include( /* include file */ |
420 |
> |
int ac, |
421 |
> |
char **av |
422 |
> |
) |
423 |
|
{ |
424 |
< |
register int rval; |
413 |
< |
|
414 |
< |
if ((rval = mg_rewind()) != MG_OK) |
415 |
< |
return(rval); |
416 |
< |
while (mg_read()) |
417 |
< |
if ((rval = mg_parse()) != MG_OK) |
418 |
< |
return(rval); |
419 |
< |
return(MG_OK); |
420 |
< |
} |
421 |
< |
|
422 |
< |
|
423 |
< |
static int |
424 |
< |
e_include(ac, av) /* include file */ |
425 |
< |
int ac; |
426 |
< |
char **av; |
427 |
< |
{ |
424 |
> |
char *xfarg[MG_MAXARGC]; |
425 |
|
MG_FCTXT ictx; |
426 |
< |
int rv; |
426 |
> |
XF_SPEC *xf_orig = xf_context; |
427 |
> |
register int rv; |
428 |
|
|
429 |
|
if (ac < 2) |
430 |
|
return(MG_EARGC); |
431 |
|
if ((rv = mg_open(&ictx, av[1])) != MG_OK) |
432 |
|
return(rv); |
433 |
< |
if ((rv = mg_iterate(ac-2, av+2, reload_file)) != MG_OK) { |
434 |
< |
fprintf(stderr, "%s: %d: %s:\n%s", ictx.fname, |
435 |
< |
ictx.lineno, mg_err[rv], ictx.inpline); |
436 |
< |
mg_close(); |
437 |
< |
return(MG_EINCL); |
433 |
> |
if (ac > 2) { |
434 |
> |
register int i; |
435 |
> |
|
436 |
> |
xfarg[0] = mg_ename[MG_E_XF]; |
437 |
> |
for (i = 1; i < ac-1; i++) |
438 |
> |
xfarg[i] = av[i+1]; |
439 |
> |
xfarg[ac-1] = NULL; |
440 |
> |
if ((rv = mg_handle(MG_E_XF, ac-1, xfarg)) != MG_OK) { |
441 |
> |
mg_close(); |
442 |
> |
return(rv); |
443 |
> |
} |
444 |
|
} |
445 |
+ |
do { |
446 |
+ |
while ((rv = mg_read()) > 0) { |
447 |
+ |
if (rv >= MG_MAXLINE-1) { |
448 |
+ |
fprintf(stderr, "%s: %d: %s\n", ictx.fname, |
449 |
+ |
ictx.lineno, mg_err[MG_ELINE]); |
450 |
+ |
mg_close(); |
451 |
+ |
return(MG_EINCL); |
452 |
+ |
} |
453 |
+ |
if ((rv = mg_parse()) != MG_OK) { |
454 |
+ |
fprintf(stderr, "%s: %d: %s:\n%s", ictx.fname, |
455 |
+ |
ictx.lineno, mg_err[rv], |
456 |
+ |
ictx.inpline); |
457 |
+ |
mg_close(); |
458 |
+ |
return(MG_EINCL); |
459 |
+ |
} |
460 |
+ |
} |
461 |
+ |
if (ac > 2) |
462 |
+ |
if ((rv = mg_handle(MG_E_XF, 1, xfarg)) != MG_OK) { |
463 |
+ |
mg_close(); |
464 |
+ |
return(rv); |
465 |
+ |
} |
466 |
+ |
} while (xf_context != xf_orig); |
467 |
|
mg_close(); |
468 |
|
return(MG_OK); |
469 |
|
} |
470 |
|
|
471 |
|
|
472 |
+ |
int |
473 |
+ |
e_faceh( /* replace face+holes with single contour */ |
474 |
+ |
int ac, |
475 |
+ |
char **av |
476 |
+ |
) |
477 |
+ |
{ |
478 |
+ |
char *newav[MG_MAXARGC]; |
479 |
+ |
int lastp = 0; |
480 |
+ |
register int i, j; |
481 |
+ |
|
482 |
+ |
newav[0] = mg_ename[MG_E_FACE]; |
483 |
+ |
for (i = 1; i < ac; i++) |
484 |
+ |
if (av[i][0] == '-') { |
485 |
+ |
if (i < 4) |
486 |
+ |
return(MG_EARGC); |
487 |
+ |
if (i >= ac-1) |
488 |
+ |
break; |
489 |
+ |
if (!lastp) |
490 |
+ |
lastp = i-1; |
491 |
+ |
for (j = i+1; j < ac-1 && av[j+1][0] != '-'; j++) |
492 |
+ |
; |
493 |
+ |
if (j - i < 3) |
494 |
+ |
return(MG_EARGC); |
495 |
+ |
newav[i] = av[j]; /* connect hole loop */ |
496 |
+ |
} else |
497 |
+ |
newav[i] = av[i]; /* hole or perimeter vertex */ |
498 |
+ |
if (lastp) |
499 |
+ |
newav[i++] = av[lastp]; /* finish seam to outside */ |
500 |
+ |
newav[i] = NULL; |
501 |
+ |
return(mg_handle(MG_E_FACE, i, newav)); |
502 |
+ |
} |
503 |
+ |
|
504 |
+ |
|
505 |
|
static void |
506 |
< |
make_axes(u, v, w) /* compute u and v given w (normalized) */ |
507 |
< |
FVECT u, v, w; |
506 |
> |
make_axes( /* compute u and v given w (normalized) */ |
507 |
> |
FVECT u, |
508 |
> |
FVECT v, |
509 |
> |
FVECT w |
510 |
> |
) |
511 |
|
{ |
512 |
|
register int i; |
513 |
|
|
522 |
|
} |
523 |
|
|
524 |
|
|
525 |
< |
static int |
526 |
< |
e_sph(ac, av) /* expand a sphere into cones */ |
527 |
< |
int ac; |
528 |
< |
char **av; |
525 |
> |
int |
526 |
> |
e_sph( /* expand a sphere into cones */ |
527 |
> |
int ac, |
528 |
> |
char **av |
529 |
> |
) |
530 |
|
{ |
531 |
|
static char p2x[24], p2y[24], p2z[24], r1[24], r2[24]; |
532 |
|
static char *v1ent[5] = {mg_ename[MG_E_VERTEX],"_sv1","=","_sv2"}; |
548 |
|
rad = atof(av[2]); |
549 |
|
/* initialize */ |
550 |
|
warpconends = 1; |
551 |
< |
if ((rval = handle_it(MG_E_VERTEX, 3, v2ent)) != MG_OK) |
551 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 3, v2ent)) != MG_OK) |
552 |
|
return(rval); |
553 |
|
sprintf(p2x, FLTFMT, cv->p[0]); |
554 |
|
sprintf(p2y, FLTFMT, cv->p[1]); |
555 |
|
sprintf(p2z, FLTFMT, cv->p[2]+rad); |
556 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
556 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
557 |
|
return(rval); |
558 |
|
r2[0] = '0'; r2[1] = '\0'; |
559 |
|
for (i = 1; i <= 2*mg_nqcdivs; i++) { |
560 |
|
theta = i*(PI/2)/mg_nqcdivs; |
561 |
< |
if ((rval = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
561 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
562 |
|
return(rval); |
563 |
|
sprintf(p2z, FLTFMT, cv->p[2]+rad*cos(theta)); |
564 |
< |
if ((rval = handle_it(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
564 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
565 |
|
return(rval); |
566 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
566 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
567 |
|
return(rval); |
568 |
|
strcpy(r1, r2); |
569 |
|
sprintf(r2, FLTFMT, rad*sin(theta)); |
570 |
< |
if ((rval = handle_it(MG_E_CONE, 5, conent)) != MG_OK) |
570 |
> |
if ((rval = mg_handle(MG_E_CONE, 5, conent)) != MG_OK) |
571 |
|
return(rval); |
572 |
|
} |
573 |
|
warpconends = 0; |
575 |
|
} |
576 |
|
|
577 |
|
|
578 |
< |
static int |
579 |
< |
e_torus(ac, av) /* expand a torus into cones */ |
580 |
< |
int ac; |
581 |
< |
char **av; |
578 |
> |
int |
579 |
> |
e_torus( /* expand a torus into cones */ |
580 |
> |
int ac, |
581 |
> |
char **av |
582 |
> |
) |
583 |
|
{ |
584 |
|
static char p2[3][24], r1[24], r2[24]; |
585 |
|
static char *v1ent[5] = {mg_ename[MG_E_VERTEX],"_tv1","=","_tv2"}; |
623 |
|
for (j = 0; j < 3; j++) |
624 |
|
sprintf(p2[j], FLTFMT, cv->p[j] + |
625 |
|
.5*sgn*(maxrad-minrad)*cv->n[j]); |
626 |
< |
if ((rval = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
626 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
627 |
|
return(rval); |
628 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
628 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
629 |
|
return(rval); |
630 |
|
sprintf(r2, FLTFMT, avgrad=.5*(minrad+maxrad)); |
631 |
|
/* run outer section */ |
632 |
|
for (i = 1; i <= 2*mg_nqcdivs; i++) { |
633 |
|
theta = i*(PI/2)/mg_nqcdivs; |
634 |
< |
if ((rval = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
634 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
635 |
|
return(rval); |
636 |
|
for (j = 0; j < 3; j++) |
637 |
|
sprintf(p2[j], FLTFMT, cv->p[j] + |
638 |
|
.5*sgn*(maxrad-minrad)*cos(theta)*cv->n[j]); |
639 |
< |
if ((rval = handle_it(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
639 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
640 |
|
return(rval); |
641 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
641 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
642 |
|
return(rval); |
643 |
|
strcpy(r1, r2); |
644 |
|
sprintf(r2, FLTFMT, avgrad + .5*(maxrad-minrad)*sin(theta)); |
645 |
< |
if ((rval = handle_it(MG_E_CONE, 5, conent)) != MG_OK) |
645 |
> |
if ((rval = mg_handle(MG_E_CONE, 5, conent)) != MG_OK) |
646 |
|
return(rval); |
647 |
|
} |
648 |
|
/* run inner section */ |
652 |
|
for (j = 0; j < 3; j++) |
653 |
|
sprintf(p2[j], FLTFMT, cv->p[j] + |
654 |
|
.5*sgn*(maxrad-minrad)*cos(theta)*cv->n[j]); |
655 |
< |
if ((rval = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
655 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
656 |
|
return(rval); |
657 |
< |
if ((rval = handle_it(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
657 |
> |
if ((rval = mg_handle(MG_E_VERTEX, 2, v2ent)) != MG_OK) |
658 |
|
return(rval); |
659 |
< |
if ((rval = handle_it(MG_E_POINT, 4, p2ent)) != MG_OK) |
659 |
> |
if ((rval = mg_handle(MG_E_POINT, 4, p2ent)) != MG_OK) |
660 |
|
return(rval); |
661 |
|
strcpy(r1, r2); |
662 |
|
sprintf(r2, FLTFMT, -avgrad - .5*(maxrad-minrad)*sin(theta)); |
663 |
< |
if ((rval = handle_it(MG_E_CONE, 5, conent)) != MG_OK) |
663 |
> |
if ((rval = mg_handle(MG_E_CONE, 5, conent)) != MG_OK) |
664 |
|
return(rval); |
665 |
|
} |
666 |
|
warpconends = 0; |
668 |
|
} |
669 |
|
|
670 |
|
|
671 |
< |
static int |
672 |
< |
e_cyl(ac, av) /* replace a cylinder with equivalent cone */ |
673 |
< |
int ac; |
674 |
< |
char **av; |
671 |
> |
int |
672 |
> |
e_cyl( /* replace a cylinder with equivalent cone */ |
673 |
> |
int ac, |
674 |
> |
char **av |
675 |
> |
) |
676 |
|
{ |
677 |
|
static char *avnew[6] = {mg_ename[MG_E_CONE]}; |
678 |
|
|
682 |
|
avnew[2] = av[2]; |
683 |
|
avnew[3] = av[3]; |
684 |
|
avnew[4] = av[2]; |
685 |
< |
return(handle_it(MG_E_CONE, 5, avnew)); |
685 |
> |
return(mg_handle(MG_E_CONE, 5, avnew)); |
686 |
|
} |
687 |
|
|
688 |
|
|
689 |
< |
static int |
690 |
< |
e_ring(ac, av) /* turn a ring into polygons */ |
691 |
< |
int ac; |
692 |
< |
char **av; |
689 |
> |
int |
690 |
> |
e_ring( /* turn a ring into polygons */ |
691 |
> |
int ac, |
692 |
> |
char **av |
693 |
> |
) |
694 |
|
{ |
695 |
|
static char p3[3][24], p4[3][24]; |
696 |
|
static char *nzent[5] = {mg_ename[MG_E_NORMAL],"0","0","0"}; |
725 |
|
make_axes(u, v, cv->n); |
726 |
|
for (j = 0; j < 3; j++) |
727 |
|
sprintf(p3[j], FLTFMT, cv->p[j] + maxrad*u[j]); |
728 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
728 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
729 |
|
return(rv); |
730 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
730 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
731 |
|
return(rv); |
732 |
|
if (minrad == 0.) { /* closed */ |
733 |
|
v1ent[3] = av[1]; |
734 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
734 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
735 |
|
return(rv); |
736 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, nzent)) != MG_OK) |
736 |
> |
if ((rv = mg_handle(MG_E_NORMAL, 4, nzent)) != MG_OK) |
737 |
|
return(rv); |
738 |
|
for (i = 1; i <= 4*mg_nqcdivs; i++) { |
739 |
|
theta = i*(PI/2)/mg_nqcdivs; |
740 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
740 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
741 |
|
return(rv); |
742 |
|
for (j = 0; j < 3; j++) |
743 |
|
sprintf(p3[j], FLTFMT, cv->p[j] + |
744 |
|
maxrad*u[j]*cos(theta) + |
745 |
|
maxrad*v[j]*sin(theta)); |
746 |
< |
if ((rv = handle_it(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
746 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
747 |
|
return(rv); |
748 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
748 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
749 |
|
return(rv); |
750 |
< |
if ((rv = handle_it(MG_E_FACE, 4, fent)) != MG_OK) |
750 |
> |
if ((rv = mg_handle(MG_E_FACE, 4, fent)) != MG_OK) |
751 |
|
return(rv); |
752 |
|
} |
753 |
|
} else { /* open */ |
754 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
754 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
755 |
|
return(rv); |
756 |
|
for (j = 0; j < 3; j++) |
757 |
|
sprintf(p4[j], FLTFMT, cv->p[j] + minrad*u[j]); |
758 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p4ent)) != MG_OK) |
758 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p4ent)) != MG_OK) |
759 |
|
return(rv); |
760 |
|
v1ent[3] = "_rv4"; |
761 |
|
for (i = 1; i <= 4*mg_nqcdivs; i++) { |
762 |
|
theta = i*(PI/2)/mg_nqcdivs; |
763 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
763 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
764 |
|
return(rv); |
765 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
765 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
766 |
|
return(rv); |
767 |
|
for (j = 0; j < 3; j++) { |
768 |
|
d = u[j]*cos(theta) + v[j]*sin(theta); |
769 |
|
sprintf(p3[j], FLTFMT, cv->p[j] + maxrad*d); |
770 |
|
sprintf(p4[j], FLTFMT, cv->p[j] + minrad*d); |
771 |
|
} |
772 |
< |
if ((rv = handle_it(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
772 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
773 |
|
return(rv); |
774 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
774 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
775 |
|
return(rv); |
776 |
< |
if ((rv = handle_it(MG_E_VERTEX, 2, v4ent)) != MG_OK) |
776 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v4ent)) != MG_OK) |
777 |
|
return(rv); |
778 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p4ent)) != MG_OK) |
778 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p4ent)) != MG_OK) |
779 |
|
return(rv); |
780 |
< |
if ((rv = handle_it(MG_E_FACE, 5, fent)) != MG_OK) |
780 |
> |
if ((rv = mg_handle(MG_E_FACE, 5, fent)) != MG_OK) |
781 |
|
return(rv); |
782 |
|
} |
783 |
|
} |
785 |
|
} |
786 |
|
|
787 |
|
|
788 |
< |
static int |
789 |
< |
e_cone(ac, av) /* turn a cone into polygons */ |
790 |
< |
int ac; |
791 |
< |
char **av; |
788 |
> |
int |
789 |
> |
e_cone( /* turn a cone into polygons */ |
790 |
> |
int ac, |
791 |
> |
char **av |
792 |
> |
) |
793 |
|
{ |
794 |
|
static char p3[3][24], p4[3][24], n3[3][24], n4[3][24]; |
795 |
|
static char *v1ent[5] = {mg_ename[MG_E_VERTEX],"_cv1","="}; |
801 |
|
static char *p4ent[5] = {mg_ename[MG_E_POINT],p4[0],p4[1],p4[2]}; |
802 |
|
static char *n4ent[5] = {mg_ename[MG_E_NORMAL],n4[0],n4[1],n4[2]}; |
803 |
|
static char *fent[6] = {mg_ename[MG_E_FACE],"_cv1","_cv2","_cv3","_cv4"}; |
804 |
+ |
char *v1n; |
805 |
|
register C_VERTEX *cv1, *cv2; |
806 |
|
register int i, j; |
807 |
|
FVECT u, v, w; |
817 |
|
if ((cv1 = c_getvert(av[1])) == NULL || |
818 |
|
(cv2 = c_getvert(av[3])) == NULL) |
819 |
|
return(MG_EUNDEF); |
820 |
+ |
v1n = av[1]; |
821 |
|
if (!isflt(av[2]) || !isflt(av[4])) |
822 |
|
return(MG_ETYPE); |
823 |
|
rad1 = atof(av[2]); |
828 |
|
if (rad2 == 0.) |
829 |
|
return(MG_EILL); |
830 |
|
} else if (rad2 != 0.) { |
831 |
< |
if (rad1 < 0. ^ rad2 < 0.) |
831 |
> |
if ((rad1 < 0.) ^ (rad2 < 0.)) |
832 |
|
return(MG_EILL); |
833 |
|
} else { /* swap */ |
834 |
|
C_VERTEX *cv; |
836 |
|
cv = cv1; |
837 |
|
cv1 = cv2; |
838 |
|
cv2 = cv; |
839 |
+ |
v1n = av[3]; |
840 |
|
d = rad1; |
841 |
|
rad1 = rad2; |
842 |
|
rad2 = d; |
863 |
|
else |
864 |
|
sprintf(n3[j], FLTFMT, u[j] + w[j]*n2off); |
865 |
|
} |
866 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
866 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 3, v3ent)) != MG_OK) |
867 |
|
return(rv); |
868 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
868 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
869 |
|
return(rv); |
870 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
870 |
> |
if ((rv = mg_handle(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
871 |
|
return(rv); |
872 |
|
if (rad1 == 0.) { /* triangles */ |
873 |
< |
v1ent[3] = av[1]; |
874 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
873 |
> |
v1ent[3] = v1n; |
874 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
875 |
|
return(rv); |
876 |
|
for (j = 0; j < 3; j++) |
877 |
|
sprintf(n4[j], FLTFMT, w[j]); |
878 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
878 |
> |
if ((rv = mg_handle(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
879 |
|
return(rv); |
880 |
|
for (i = 1; i <= 4*mg_nqcdivs; i++) { |
881 |
|
theta = sgn*i*(PI/2)/mg_nqcdivs; |
882 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
882 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
883 |
|
return(rv); |
884 |
|
for (j = 0; j < 3; j++) { |
885 |
|
d = u[j]*cos(theta) + v[j]*sin(theta); |
887 |
|
if (n2off > -FHUGE) |
888 |
|
sprintf(n3[j], FLTFMT, d + w[j]*n2off); |
889 |
|
} |
890 |
< |
if ((rv = handle_it(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
890 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
891 |
|
return(rv); |
892 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
892 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
893 |
|
return(rv); |
894 |
|
if (n2off > -FHUGE && |
895 |
< |
(rv = handle_it(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
895 |
> |
(rv = mg_handle(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
896 |
|
return(rv); |
897 |
< |
if ((rv = handle_it(MG_E_FACE, 4, fent)) != MG_OK) |
897 |
> |
if ((rv = mg_handle(MG_E_FACE, 4, fent)) != MG_OK) |
898 |
|
return(rv); |
899 |
|
} |
900 |
|
} else { /* quads */ |
913 |
|
else |
914 |
|
sprintf(n4[j], FLTFMT, u[j] + w[j]*n1off); |
915 |
|
} |
916 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
916 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 3, v4ent)) != MG_OK) |
917 |
|
return(rv); |
918 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p4ent)) != MG_OK) |
918 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p4ent)) != MG_OK) |
919 |
|
return(rv); |
920 |
< |
if ((rv = handle_it(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
920 |
> |
if ((rv = mg_handle(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
921 |
|
return(rv); |
922 |
|
for (i = 1; i <= 4*mg_nqcdivs; i++) { |
923 |
|
theta = sgn*i*(PI/2)/mg_nqcdivs; |
924 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
924 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v1ent)) != MG_OK) |
925 |
|
return(rv); |
926 |
< |
if ((rv = handle_it(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
926 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, v2ent)) != MG_OK) |
927 |
|
return(rv); |
928 |
|
for (j = 0; j < 3; j++) { |
929 |
|
d = u[j]*cos(theta) + v[j]*sin(theta); |
934 |
|
if (n1off < FHUGE) |
935 |
|
sprintf(n4[j], FLTFMT, d + w[j]*n1off); |
936 |
|
} |
937 |
< |
if ((rv = handle_it(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
937 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v3ent)) != MG_OK) |
938 |
|
return(rv); |
939 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p3ent)) != MG_OK) |
939 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p3ent)) != MG_OK) |
940 |
|
return(rv); |
941 |
|
if (n2off > -FHUGE && |
942 |
< |
(rv = handle_it(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
942 |
> |
(rv = mg_handle(MG_E_NORMAL, 4, n3ent)) != MG_OK) |
943 |
|
return(rv); |
944 |
< |
if ((rv = handle_it(MG_E_VERTEX, 2, v4ent)) != MG_OK) |
944 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 2, v4ent)) != MG_OK) |
945 |
|
return(rv); |
946 |
< |
if ((rv = handle_it(MG_E_POINT, 4, p4ent)) != MG_OK) |
946 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, p4ent)) != MG_OK) |
947 |
|
return(rv); |
948 |
|
if (n1off < FHUGE && |
949 |
< |
(rv = handle_it(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
949 |
> |
(rv = mg_handle(MG_E_NORMAL, 4, n4ent)) != MG_OK) |
950 |
|
return(rv); |
951 |
< |
if ((rv = handle_it(MG_E_FACE, 5, fent)) != MG_OK) |
951 |
> |
if ((rv = mg_handle(MG_E_FACE, 5, fent)) != MG_OK) |
952 |
|
return(rv); |
953 |
|
} |
954 |
|
} |
956 |
|
} |
957 |
|
|
958 |
|
|
959 |
< |
static int |
960 |
< |
e_prism(ac, av) /* turn a prism into polygons */ |
961 |
< |
int ac; |
962 |
< |
char **av; |
959 |
> |
int |
960 |
> |
e_prism( /* turn a prism into polygons */ |
961 |
> |
int ac, |
962 |
> |
char **av |
963 |
> |
) |
964 |
|
{ |
965 |
|
static char p[3][24]; |
966 |
< |
static char *vent[4] = {mg_ename[MG_E_VERTEX],NULL,"="}; |
966 |
> |
static char *vent[5] = {mg_ename[MG_E_VERTEX],NULL,"="}; |
967 |
|
static char *pent[5] = {mg_ename[MG_E_POINT],p[0],p[1],p[2]}; |
968 |
+ |
static char *znorm[5] = {mg_ename[MG_E_NORMAL],"0","0","0"}; |
969 |
|
char *newav[MG_MAXARGC], nvn[MG_MAXARGC-1][8]; |
970 |
|
double length; |
971 |
+ |
int hasnorm; |
972 |
|
FVECT v1, v2, v3, norm; |
973 |
|
register C_VERTEX *cv; |
974 |
|
C_VERTEX *cv0; |
975 |
|
int rv; |
976 |
|
register int i, j; |
977 |
< |
|
977 |
> |
/* check arguments */ |
978 |
|
if (ac < 5) |
979 |
|
return(MG_EARGC); |
980 |
|
if (!isflt(av[ac-1])) |
982 |
|
length = atof(av[ac-1]); |
983 |
|
if (length <= FTINY && length >= -FTINY) |
984 |
|
return(MG_EILL); |
985 |
< |
/* do bottom face */ |
986 |
< |
newav[0] = mg_ename[MG_E_FACE]; |
914 |
< |
for (i = 1; i < ac-1; i++) |
915 |
< |
newav[i] = av[i]; |
916 |
< |
newav[i] = NULL; |
917 |
< |
if ((rv = handle_it(MG_E_FACE, i, newav)) != MG_OK) |
918 |
< |
return(rv); |
919 |
< |
/* compute face normal */ |
920 |
< |
if ((cv0 = c_getvert(av[2])) == NULL) |
985 |
> |
/* compute face normal */ |
986 |
> |
if ((cv0 = c_getvert(av[1])) == NULL) |
987 |
|
return(MG_EUNDEF); |
988 |
+ |
hasnorm = 0; |
989 |
|
norm[0] = norm[1] = norm[2] = 0.; |
990 |
|
v1[0] = v1[1] = v1[2] = 0.; |
991 |
|
for (i = 2; i < ac-1; i++) { |
992 |
|
if ((cv = c_getvert(av[i])) == NULL) |
993 |
|
return(MG_EUNDEF); |
994 |
+ |
hasnorm += !is0vect(cv->n); |
995 |
|
v2[0] = cv->p[0] - cv0->p[0]; |
996 |
|
v2[1] = cv->p[1] - cv0->p[1]; |
997 |
|
v2[2] = cv->p[2] - cv0->p[2]; |
1003 |
|
} |
1004 |
|
if (normalize(norm) == 0.) |
1005 |
|
return(MG_EILL); |
1006 |
< |
/* create moved vertices */ |
1006 |
> |
/* create moved vertices */ |
1007 |
|
for (i = 1; i < ac-1; i++) { |
1008 |
|
sprintf(nvn[i-1], "_pv%d", i); |
1009 |
|
vent[1] = nvn[i-1]; |
1010 |
< |
if ((rv = handle_it(MG_E_VERTEX, 3, vent)) != MG_OK) |
1010 |
> |
vent[3] = av[i]; |
1011 |
> |
if ((rv = mg_handle(MG_E_VERTEX, 4, vent)) != MG_OK) |
1012 |
|
return(rv); |
1013 |
|
cv = c_getvert(av[i]); /* checked above */ |
1014 |
|
for (j = 0; j < 3; j++) |
1015 |
|
sprintf(p[j], FLTFMT, cv->p[j] - length*norm[j]); |
1016 |
< |
if ((rv = handle_it(MG_E_POINT, 4, pent)) != MG_OK) |
1016 |
> |
if ((rv = mg_handle(MG_E_POINT, 4, pent)) != MG_OK) |
1017 |
|
return(rv); |
949 |
– |
newav[ac-1-i] = nvn[i-1]; /* reverse */ |
1018 |
|
} |
1019 |
< |
/* do top face */ |
1020 |
< |
if ((rv = handle_it(MG_E_FACE, ac-1, newav)) != MG_OK) |
953 |
< |
return(rv); |
1019 |
> |
/* make faces */ |
1020 |
> |
newav[0] = mg_ename[MG_E_FACE]; |
1021 |
|
/* do the side faces */ |
1022 |
|
newav[5] = NULL; |
1023 |
|
newav[3] = av[ac-2]; |
1025 |
|
for (i = 1; i < ac-1; i++) { |
1026 |
|
newav[1] = nvn[i-1]; |
1027 |
|
newav[2] = av[i]; |
1028 |
< |
if ((rv = handle_it(MG_E_FACE, 5, newav)) != MG_OK) |
1028 |
> |
if ((rv = mg_handle(MG_E_FACE, 5, newav)) != MG_OK) |
1029 |
|
return(rv); |
1030 |
|
newav[3] = newav[2]; |
1031 |
|
newav[4] = newav[1]; |
1032 |
|
} |
1033 |
+ |
/* do top face */ |
1034 |
+ |
for (i = 1; i < ac-1; i++) { |
1035 |
+ |
if (hasnorm) { /* zero normals */ |
1036 |
+ |
vent[1] = nvn[i-1]; |
1037 |
+ |
if ((rv = mg_handle(MG_E_VERTEX, 2, vent)) != MG_OK) |
1038 |
+ |
return(rv); |
1039 |
+ |
if ((rv = mg_handle(MG_E_NORMAL, 4, znorm)) != MG_OK) |
1040 |
+ |
return(rv); |
1041 |
+ |
} |
1042 |
+ |
newav[ac-1-i] = nvn[i-1]; /* reverse */ |
1043 |
+ |
} |
1044 |
+ |
if ((rv = mg_handle(MG_E_FACE, ac-1, newav)) != MG_OK) |
1045 |
+ |
return(rv); |
1046 |
+ |
/* do bottom face */ |
1047 |
+ |
if (hasnorm) |
1048 |
+ |
for (i = 1; i < ac-1; i++) { |
1049 |
+ |
vent[1] = nvn[i-1]; |
1050 |
+ |
vent[3] = av[i]; |
1051 |
+ |
if ((rv = mg_handle(MG_E_VERTEX, 4, vent)) != MG_OK) |
1052 |
+ |
return(rv); |
1053 |
+ |
if ((rv = mg_handle(MG_E_NORMAL, 4, znorm)) != MG_OK) |
1054 |
+ |
return(rv); |
1055 |
+ |
newav[i] = nvn[i-1]; |
1056 |
+ |
} |
1057 |
+ |
else |
1058 |
+ |
for (i = 1; i < ac-1; i++) |
1059 |
+ |
newav[i] = av[i]; |
1060 |
+ |
newav[i] = NULL; |
1061 |
+ |
if ((rv = mg_handle(MG_E_FACE, i, newav)) != MG_OK) |
1062 |
+ |
return(rv); |
1063 |
+ |
return(MG_OK); |
1064 |
+ |
} |
1065 |
+ |
|
1066 |
+ |
|
1067 |
+ |
static int |
1068 |
+ |
put_cxy(void) /* put out current xy chromaticities */ |
1069 |
+ |
{ |
1070 |
+ |
static char xbuf[24], ybuf[24]; |
1071 |
+ |
static char *ccom[4] = {mg_ename[MG_E_CXY], xbuf, ybuf}; |
1072 |
+ |
|
1073 |
+ |
sprintf(xbuf, "%.4f", c_ccolor->cx); |
1074 |
+ |
sprintf(ybuf, "%.4f", c_ccolor->cy); |
1075 |
+ |
return(mg_handle(MG_E_CXY, 3, ccom)); |
1076 |
+ |
} |
1077 |
+ |
|
1078 |
+ |
|
1079 |
+ |
static int |
1080 |
+ |
put_cspec(void) /* put out current color spectrum */ |
1081 |
+ |
{ |
1082 |
+ |
char wl[2][6], vbuf[C_CNSS][24]; |
1083 |
+ |
char *newav[C_CNSS+4]; |
1084 |
+ |
double sf; |
1085 |
+ |
register int i; |
1086 |
+ |
|
1087 |
+ |
if (mg_ehand[MG_E_CSPEC] != c_hcolor) { |
1088 |
+ |
sprintf(wl[0], "%d", C_CMINWL); |
1089 |
+ |
sprintf(wl[1], "%d", C_CMAXWL); |
1090 |
+ |
newav[0] = mg_ename[MG_E_CSPEC]; |
1091 |
+ |
newav[1] = wl[0]; |
1092 |
+ |
newav[2] = wl[1]; |
1093 |
+ |
sf = (double)C_CNSS / c_ccolor->ssum; |
1094 |
+ |
for (i = 0; i < C_CNSS; i++) { |
1095 |
+ |
sprintf(vbuf[i], "%.4f", sf*c_ccolor->ssamp[i]); |
1096 |
+ |
newav[i+3] = vbuf[i]; |
1097 |
+ |
} |
1098 |
+ |
newav[C_CNSS+3] = NULL; |
1099 |
+ |
if ((i = mg_handle(MG_E_CSPEC, C_CNSS+3, newav)) != MG_OK) |
1100 |
+ |
return(i); |
1101 |
+ |
} |
1102 |
+ |
return(MG_OK); |
1103 |
+ |
} |
1104 |
+ |
|
1105 |
+ |
|
1106 |
+ |
static int |
1107 |
+ |
e_cspec( /* handle spectral color */ |
1108 |
+ |
int ac, |
1109 |
+ |
char **av |
1110 |
+ |
) |
1111 |
+ |
{ |
1112 |
+ |
/* convert to xy chromaticity */ |
1113 |
+ |
c_ccvt(c_ccolor, C_CSXY); |
1114 |
+ |
/* if it's really their handler, use it */ |
1115 |
+ |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1116 |
+ |
return(put_cxy()); |
1117 |
+ |
return(MG_OK); |
1118 |
+ |
} |
1119 |
+ |
|
1120 |
+ |
|
1121 |
+ |
static int |
1122 |
+ |
e_cmix( /* handle mixing of colors */ |
1123 |
+ |
int ac, |
1124 |
+ |
char **av |
1125 |
+ |
) |
1126 |
+ |
{ |
1127 |
+ |
/* |
1128 |
+ |
* Contorted logic works as follows: |
1129 |
+ |
* 1. the colors are already mixed in c_hcolor() support function |
1130 |
+ |
* 2. if we would handle a spectral result, make sure it's not |
1131 |
+ |
* 3. if c_hcolor() would handle a spectral result, don't bother |
1132 |
+ |
* 4. otherwise, make cspec entity and pass it to their handler |
1133 |
+ |
* 5. if we have only xy results, handle it as c_spec() would |
1134 |
+ |
*/ |
1135 |
+ |
if (mg_ehand[MG_E_CSPEC] == e_cspec) |
1136 |
+ |
c_ccvt(c_ccolor, C_CSXY); |
1137 |
+ |
else if (c_ccolor->flags & C_CDSPEC) |
1138 |
+ |
return(put_cspec()); |
1139 |
+ |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1140 |
+ |
return(put_cxy()); |
1141 |
+ |
return(MG_OK); |
1142 |
+ |
} |
1143 |
+ |
|
1144 |
+ |
|
1145 |
+ |
static int |
1146 |
+ |
e_cct( /* handle color temperature */ |
1147 |
+ |
int ac, |
1148 |
+ |
char **av |
1149 |
+ |
) |
1150 |
+ |
{ |
1151 |
+ |
/* |
1152 |
+ |
* Logic is similar to e_cmix here. Support handler has already |
1153 |
+ |
* converted temperature to spectral color. Put it out as such |
1154 |
+ |
* if they support it, otherwise convert to xy chromaticity and |
1155 |
+ |
* put it out if they handle it. |
1156 |
+ |
*/ |
1157 |
+ |
if (mg_ehand[MG_E_CSPEC] != e_cspec) |
1158 |
+ |
return(put_cspec()); |
1159 |
+ |
c_ccvt(c_ccolor, C_CSXY); |
1160 |
+ |
if (mg_ehand[MG_E_CXY] != c_hcolor) |
1161 |
+ |
return(put_cxy()); |
1162 |
|
return(MG_OK); |
1163 |
|
} |