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root/radiance/src/meta/metacalls.c
Revision: 1.1
Committed: Sat Feb 22 02:07:26 2003 UTC (22 years, 8 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R5
Log Message: 
Changes and check-in for 3.5 release
Includes new source files and modifications not recorded for many years
See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release

File Contents

# User Rev Content
1 greg 1.1 #ifndef lint
2     static const char RCSid[] = "$Id$";
3     #endif
4     /*
5     * metacalls.c - functional interface to metafile.
6     *
7     * 2/24/86
8     */
9    
10     #include "meta.h"
11    
12    
13     #define RIGHT 0
14     #define UP 1
15     #define LEFT 2
16     #define DOWN 3
17    
18     #define pflush() if (inpoly) closepoly()
19    
20     #define putdec(v) if (v) decival(v); else *cap++ = '0';
21    
22    
23     static int curx = 0;
24     static int cury = 0;
25     static int cura0 = 0;
26     static int inpoly = FALSE;
27     static char curargs[MAXARGS] = "";
28     static char *cap;
29    
30    
31     mendpage() /* end of page */
32     {
33     pflush();
34     pglob(PEOP, 0200, NULL);
35     }
36    
37    
38     mdone() /* end of graphics metafile */
39     {
40     pflush();
41     pglob(PEOF, 0200, NULL);
42     }
43    
44    
45     minclude(fname) /* include a file */
46     char *fname;
47     {
48     pflush();
49     pglob(PINCL, 1, fname);
50     }
51    
52    
53     msetpat(pn, pat) /* set a pattern */
54     int pn;
55     char *pat;
56     {
57     pflush();
58     pglob(PSET, pn+4, pat);
59     }
60    
61    
62     mopenseg(sname) /* open a segment */
63     char *sname;
64     {
65     pflush();
66     pglob(POPEN, 0, sname);
67     }
68    
69    
70     mcloseseg() /* close current segment */
71     {
72     pflush();
73     pglob(PCLOSE, 0200, NULL);
74     }
75    
76    
77     mline(x, y, type, thick, color) /* start a line */
78     int x, y;
79     int type, thick, color;
80     {
81     pflush();
82     cura0 = (type<<4 & 060) | (thick<<2 & 014) | (color & 03);
83     curx = x;
84     cury = y;
85     }
86    
87    
88     mrectangle(xmin, ymin, xmax, ymax, pat, color) /* fill a rectangle */
89     int xmin, ymin, xmax, ymax;
90     int pat, color;
91     {
92     pflush();
93     cura0 = (pat<<2 & 014) | (color & 03);
94     pprim(PRFILL, cura0, xmin, ymin, xmax, ymax, NULL);
95     }
96    
97    
98     mtriangle(xmin, ymin, xmax, ymax, d, pat, color) /* fill a triangle */
99     int xmin, ymin, xmax, ymax;
100     int d, pat, color;
101     {
102     pflush();
103     cura0 = (let_dir(d)<<4 & 060) | (pat<<2 & 014) | (color & 03);
104     pprim(PTFILL, cura0, xmin, ymin, xmax, ymax, NULL);
105     }
106    
107    
108     mpoly(x, y, border, pat, color) /* start a polygon */
109     int x, y;
110     int border, pat, color;
111     {
112     pflush();
113     cura0 = (border<<6 & 0100) | (pat<<2 & 014) | (color & 03);
114     cap = curargs;
115     inpoly = TRUE;
116     putdec(x);
117     *cap++ = ' ';
118     putdec(y);
119     }
120    
121    
122     mtext(x, y, s, cpi, color) /* matrix string */
123     int x, y;
124     char *s;
125     int cpi;
126     int color;
127     {
128     pflush();
129     cura0 = (color & 03);
130     if (cpi < 10) {
131     cura0 += 04;
132     cpi *= 2;
133     }
134     if (cpi > 11)
135     cura0 += 020;
136     if (cpi > 14)
137     cura0 += 020;
138     if (cpi > 18)
139     cura0 += 020;
140     pprim(PMSTR, cura0, x, y, x, y, s);
141     }
142    
143    
144     mvstr(xmin, ymin, xmax, ymax, s, d, thick, color) /* vector string */
145     int xmin, ymin, xmax, ymax;
146     char *s;
147     int d, thick, color;
148     {
149     pflush();
150     cura0 = (let_dir(d)<<4 & 060) | (thick<<2 & 014) | (color & 03);
151     pprim(PVSTR, cura0, xmin, ymin, xmax, ymax, s);
152     }
153    
154    
155     msegment(xmin, ymin, xmax, ymax, sname, d, thick, color) /* segment */
156     int xmin, ymin, xmax, ymax;
157     char *sname;
158     int d, thick, color;
159     {
160     pflush();
161     cura0 = (let_dir(d)<<4 & 060) | (thick<<2 & 014) | (color & 03);
162     pprim(PSEG, cura0, xmin, ymin, xmax, ymax, sname);
163     }
164    
165    
166     mdraw(x, y) /* draw to next point */
167     int x, y;
168     {
169     if (inpoly) {
170     polyval(x, y);
171     } else if (x != curx || y != cury) {
172     plseg(cura0, curx, cury, x, y);
173     curx = x;
174     cury = y;
175     }
176     }
177    
178    
179     static
180     decival(v) /* add value to polygon */
181     register int v;
182     {
183     if (!v)
184     return;
185     decival(v/10);
186     *cap++ = v%10 + '0';
187     }
188    
189    
190     static
191     polyval(x, y) /* add vertex to a polygon */
192     register int x, y;
193     {
194     *cap++ = ' ';
195     putdec(x);
196     *cap++ = ' ';
197     putdec(y);
198     }
199    
200    
201     static
202     closepoly() /* close current polygon */
203     {
204     *cap = '\0';
205     pprim(PPFILL, cura0, 0, 0, XYSIZE-1, XYSIZE-1, curargs);
206     inpoly = FALSE;
207     }
208    
209    
210     static int
211     let_dir(c) /* convert letter to corresponding direction */
212     register int c;
213     {
214     switch (c) {
215     case 'R':
216     case 'r':
217     return(RIGHT);
218     case 'U':
219     case 'u':
220     return(UP);
221     case 'L':
222     case 'l':
223     return(LEFT);
224     case 'D':
225     case 'd':
226     return(DOWN);
227     }
228     return(0);
229     }