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