1 #ifndef lint 2 static char *sccsid = "pile.c (CWI) 1.1 85/03/01"; 3 #endif 4 # include "e.h" 5 6 lpile(type, p1, p2) int type, p1, p2; { 7 int bi, hi, i, gap, h, b, nlist, nlist2, mid; 8 yyval = oalloc(); 9 gap = VERT( EM(0.4, ps) ); /* 0.4 m between blocks */ 10 if( type=='-' ) gap = 0; 11 nlist = p2 - p1; 12 nlist2 = (nlist+1)/2; 13 mid = p1 + nlist2 -1; 14 h = 0; 15 for( i=p1; i<p2; i++ ) 16 h += eht[lp[i]]; 17 eht[yyval] = h + (nlist-1)*gap; 18 b = 0; 19 for( i=p2-1; i>mid; i-- ) 20 b += eht[lp[i]] + gap; 21 ebase[yyval] = (nlist%2) ? b + ebase[lp[mid]] 22 : b - VERT( EM(0.5, ps) ) - gap; 23 if(dbg) { 24 printf(".\tS%d <- %c pile of:", yyval, type); 25 for( i=p1; i<p2; i++) 26 printf(" S%d", lp[i]); 27 printf(";h=%d b=%d\n", eht[yyval], ebase[yyval]); 28 } 29 nrwid(lp[p1], ps, lp[p1]); 30 printf(".nr %d \\n(%d\n", yyval, lp[p1]); 31 for( i = p1+1; i<p2; i++ ) { 32 nrwid(lp[i], ps, lp[i]); 33 printf(".if \\n(%d>\\n(%d .nr %d \\n(%d\n", 34 lp[i], yyval, yyval, lp[i]); 35 } 36 printf(".ds %d \\v'%du'\\h'%du*\\n(%du'\\\n", yyval, ebase[yyval], 37 type=='R' ? 1 : 0, yyval); 38 for(i = p2-1; i >=p1; i--) { 39 hi = eht[lp[i]]; 40 bi = ebase[lp[i]]; 41 switch(type) { 42 43 case 'L': 44 printf("\\v'%du'\\*(%d\\h'-\\n(%du'\\v'0-%du'\\\n", 45 -bi, lp[i], lp[i], hi-bi+gap); 46 continue; 47 case 'R': 48 printf("\\v'%du'\\h'-\\n(%du'\\*(%d\\v'0-%du'\\\n", 49 -bi, lp[i], lp[i], hi-bi+gap); 50 continue; 51 case 'C': 52 case '-': 53 printf("\\v'%du'\\h'\\n(%du-\\n(%du/2u'\\*(%d", 54 -bi, yyval, lp[i], lp[i]); 55 printf("\\h'-\\n(%du-\\n(%du/2u'\\v'0-%du'\\\n", 56 yyval, lp[i], hi-bi+gap); 57 continue; 58 } 59 } 60 printf("\\v'%du'\\h'%du*\\n(%du'\n", eht[yyval]-ebase[yyval]+gap, 61 type!='R' ? 1 : 0, yyval); 62 for( i=p1; i<p2; i++ ) 63 ofree(lp[i]); 64 lfont[yyval] = rfont[yyval] = 0; 65 } 66