1 #ifndef lint
2 static char sccsid[] = "@(#)pile.c 2.2 (CWI) 87/04/01";
3 #endif lint
4 #include "e.h"
5 #include "y.tab.h"
6
pile(oct)7 pile(oct)
8 int oct;
9 {
10 int i, nlist, nlist2, mid;
11 float bi, hi, h, b, gap, sb;
12 extern float Pilegap, Pilebase;
13 int type, p1, p2;
14
15 yyval = salloc();
16 type = lp[oct];
17 p1 = oct + 3; /* first entry */
18 p2 = p1 + lp[oct+1]; /* 1 after last */
19 gap = lp[oct+2];
20 if (gap != DEFGAP)
21 gap = EM(gap/100.0, ps);
22 else if (type == COL)
23 gap = 0;
24 else
25 gap = EM(Pilegap, ps); /* 0.4 m between LCOL, etc. */
26 nlist = p2 - p1;
27 nlist2 = (nlist+1)/2;
28 mid = p1 + nlist2 - 1;
29 h = 0;
30 for (i = p1; i < p2; i++)
31 h += eht[lp[i]];
32 eht[yyval] = h + (nlist-1)*gap;
33 b = 0;
34 for (i = p2-1; i > mid; i--)
35 b += eht[lp[i]] + gap;
36 ebase[yyval] = (nlist%2) ? b + ebase[lp[mid]]
37 : b - EM(Pilebase, ps) - gap;
38 if (dbg) {
39 printf(".\tS%d <- %d pile of:", yyval, type);
40 for (i = p1; i < p2; i++)
41 printf(" S%d", lp[i]);
42 printf("; h=%g b=%g\n", eht[yyval], ebase[yyval]);
43 }
44 nrwid(lp[p1], ps, lp[p1]);
45 printf(".nr %d \\n(%d\n", yyval, lp[p1]);
46 for (i = p1+1; i < p2; i++) {
47 nrwid(lp[i], ps, lp[i]);
48 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n",
49 lp[i], yyval, yyval, lp[i]);
50 }
51 printf(".ds %d \\v'%gm'\\h'%du*\\n(%du'\\\n", yyval, REL(ebase[yyval],ps),
52 type==RCOL ? 1 : 0, yyval);
53 sb = 0; /* sum of box hts */
54 for (i = p2-1; i >= p1; i--) {
55 bi = sb + ebase[lp[i]];
56 switch (type) {
57 case LCOL:
58 printf("\\v'%gm'\\*(%d\\h'-\\n(%du'\\v'%gm'\\\n",
59 REL(-bi,ps), lp[i], lp[i], REL(bi,ps));
60 break;
61 case RCOL:
62 printf("\\v'%gm'\\h'-\\n(%du'\\*(%d\\v'%gm'\\\n",
63 REL(-bi,ps), lp[i], lp[i], REL(bi,ps));
64 break;
65 case CCOL:
66 case COL:
67 printf("\\v'%gm'\\h'\\n(%du-\\n(%du/2u'\\*(%d",
68 REL(-bi,ps), yyval, lp[i], lp[i]);
69 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%gm'\\\n",
70 yyval, lp[i], REL(bi,ps));
71 break;
72 }
73 sb += eht[lp[i]] + gap;
74 }
75 printf("\\v'%gm'\\h'%du*\\n(%du'\n", REL(-ebase[yyval],ps),
76 type!=RCOL ? 1 : 0, yyval);
77 for (i = p1; i < p2; i++)
78 sfree(lp[i]);
79 lfont[yyval] = rfont[yyval] = 0;
80 }
81