mirror of
https://github.com/9fans/plan9port.git
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77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
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#include "e.h"
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#include "y.tab.h"
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void pile(int oct)
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{
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int i, nlist, nlist2, mid;
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double bi, h, b, gap, sb;
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extern double Pilegap, Pilebase;
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int type, p1, p2;
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yyval = salloc();
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type = lp[oct];
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p1 = oct + 3; /* first entry */
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p2 = p1 + lp[oct+1]; /* 1 after last */
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gap = lp[oct+2];
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if (gap != DEFGAP)
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gap = EM(gap/100.0, ps);
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else if (type == COL)
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gap = 0;
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else
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gap = EM(Pilegap, ps); /* 0.4 m between LCOL, etc. */
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nlist = p2 - p1;
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nlist2 = (nlist+1)/2;
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mid = p1 + nlist2 - 1;
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h = 0;
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for (i = p1; i < p2; i++)
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h += eht[lp[i]];
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eht[yyval] = h + (nlist-1)*gap;
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b = 0;
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for (i = p2-1; i > mid; i--)
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b += eht[lp[i]] + gap;
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ebase[yyval] = (nlist%2) ? b + ebase[lp[mid]]
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: b - EM(Pilebase, ps) - gap;
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if (dbg) {
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printf(".\tS%d <- %d pile of:", yyval, type);
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for (i = p1; i < p2; i++)
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printf(" S%d", lp[i]);
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printf("; h=%g b=%g\n", eht[yyval], ebase[yyval]);
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}
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nrwid(lp[p1], ps, lp[p1]);
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printf(".nr %d \\n(%d\n", yyval, lp[p1]);
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for (i = p1+1; i < p2; i++) {
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nrwid(lp[i], ps, lp[i]);
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printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n",
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lp[i], yyval, yyval, lp[i]);
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}
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printf(".ds %d \\v'%gm'\\h'%du*\\n(%du'\\\n", yyval, REL(ebase[yyval],ps),
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type==RCOL ? 1 : 0, yyval);
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sb = 0; /* sum of box hts */
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for (i = p2-1; i >= p1; i--) {
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bi = sb + ebase[lp[i]];
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switch (type) {
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case LCOL:
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printf("\\v'%gm'\\*(%d\\h'-\\n(%du'\\v'%gm'\\\n",
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REL(-bi,ps), lp[i], lp[i], REL(bi,ps));
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break;
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case RCOL:
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printf("\\v'%gm'\\h'-\\n(%du'\\*(%d\\v'%gm'\\\n",
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REL(-bi,ps), lp[i], lp[i], REL(bi,ps));
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break;
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case CCOL:
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case COL:
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printf("\\v'%gm'\\h'\\n(%du-\\n(%du/2u'\\*(%d",
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REL(-bi,ps), yyval, lp[i], lp[i]);
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printf("\\h'-\\n(%du-\\n(%du/2u'\\v'%gm'\\\n",
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yyval, lp[i], REL(bi,ps));
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break;
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}
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sb += eht[lp[i]] + gap;
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}
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printf("\\v'%gm'\\h'%du*\\n(%du'\n", REL(-ebase[yyval],ps),
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type!=RCOL ? 1 : 0, yyval);
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for (i = p1; i < p2; i++)
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sfree(lp[i]);
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lfont[yyval] = rfont[yyval] = 0;
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}
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