Subversion Repositories planix.SVN

#include "e.h"
#include "y.tab.h"

void pile(int oct)
{
        int i, nlist, nlist2, mid;
        double bi, h, b, gap, sb;
        extern double Pilegap, Pilebase;
        int type, p1, p2;

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