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