1 #include <stdio.h>
2 #include "pic.h"
3 #include "y.tab.h"
4
circgen(int type)5 obj *circgen(int type)
6 {
7 static double rad[2] = { HT2, WID2 };
8 static double rad2[2] = { HT2, HT2 };
9 int i, at, t, with, battr;
10 double xwith, ywith;
11 double r, r2, ddval, fillval;
12 obj *p, *ppos;
13 Attr *ap;
14
15 battr = at = 0;
16 with = xwith = ywith = fillval = ddval = 0;
17 t = (type == CIRCLE) ? 0 : 1;
18 if (type == CIRCLE)
19 r = r2 = getfval("circlerad");
20 else if (type == ELLIPSE) {
21 r = getfval("ellipsewid") / 2;
22 r2 = getfval("ellipseht") / 2;
23 }
24 for (i = 0; i < nattr; i++) {
25 ap = &attr[i];
26 switch (ap->a_type) {
27 case TEXTATTR:
28 savetext(ap->a_sub, ap->a_val.p);
29 break;
30 case RADIUS:
31 r = ap->a_val.f;
32 break;
33 case DIAMETER:
34 case WIDTH:
35 r = ap->a_val.f / 2;
36 break;
37 case HEIGHT:
38 r2 = ap->a_val.f / 2;
39 break;
40 case SAME:
41 r = rad[t];
42 r2 = rad2[t];
43 break;
44 case WITH:
45 with = ap->a_val.i;
46 break;
47 case AT:
48 ppos = ap->a_val.o;
49 curx = ppos->o_x;
50 cury = ppos->o_y;
51 at++;
52 break;
53 case INVIS:
54 battr |= INVIS;
55 break;
56 case NOEDGE:
57 battr |= NOEDGEBIT;
58 break;
59 case DOT:
60 case DASH:
61 battr |= ap->a_type==DOT ? DOTBIT : DASHBIT;
62 if (ap->a_sub == DEFAULT)
63 ddval = getfval("dashwid");
64 else
65 ddval = ap->a_val.f;
66 break;
67 case FILL:
68 battr |= FILLBIT;
69 if (ap->a_sub == DEFAULT)
70 fillval = getfval("fillval");
71 else
72 fillval = ap->a_val.f;
73 break;
74 }
75 }
76 if (type == CIRCLE)
77 r2 = r; /* probably superfluous */
78 if (with) {
79 switch (with) {
80 case NORTH: ywith = -r2; break;
81 case SOUTH: ywith = r2; break;
82 case EAST: xwith = -r; break;
83 case WEST: xwith = r; break;
84 case NE: xwith = -r * 0.707; ywith = -r2 * 0.707; break;
85 case SE: xwith = -r * 0.707; ywith = r2 * 0.707; break;
86 case NW: xwith = r * 0.707; ywith = -r2 * 0.707; break;
87 case SW: xwith = r * 0.707; ywith = r2 * 0.707; break;
88 }
89 curx += xwith;
90 cury += ywith;
91 }
92 if (!at) {
93 if (isright(hvmode))
94 curx += r;
95 else if (isleft(hvmode))
96 curx -= r;
97 else if (isup(hvmode))
98 cury += r2;
99 else
100 cury -= r2;
101 }
102 p = makenode(type, 2);
103 p->o_val[0] = rad[t] = r;
104 p->o_val[1] = rad2[t] = r2;
105 if (r <= 0 || r2 <= 0) {
106 ERROR "%s has invalid radius %g\n", (type==CIRCLE) ? "circle" : "ellipse", r<r2 ? r : r2 WARNING;
107 }
108 p->o_attr = battr;
109 p->o_ddval = ddval;
110 p->o_fillval = fillval;
111 extreme(curx+r, cury+r2);
112 extreme(curx-r, cury-r2);
113 if (type == CIRCLE)
114 dprintf("C %g %g %g\n", curx, cury, r);
115 if (type == ELLIPSE)
116 dprintf("E %g %g %g %g\n", curx, cury, r, r2);
117 if (isright(hvmode))
118 curx += r;
119 else if (isleft(hvmode))
120 curx -= r;
121 else if (isup(hvmode))
122 cury += r2;
123 else
124 cury -= r2;
125 return(p);
126 }
127