1 |
root |
1.1 |
/* |
2 |
|
|
* rayshade interface |
3 |
|
|
*/ |
4 |
|
|
|
5 |
|
|
#include "config.h" |
6 |
|
|
|
7 |
|
|
#include <iostream> |
8 |
|
|
#include <algorithm> |
9 |
|
|
|
10 |
|
|
#include "ray_int.h" |
11 |
|
|
|
12 |
|
|
ray_int::ray_int (ostream &out) t_no |
13 |
|
|
: o(out) |
14 |
|
|
{ |
15 |
|
|
} |
16 |
|
|
|
17 |
|
|
ray_int::~ray_int () t_no |
18 |
|
|
{ |
19 |
|
|
} |
20 |
|
|
|
21 |
|
|
void ray_int::begin_fig () t_no |
22 |
|
|
{ |
23 |
|
|
x1 = 1e10; y1 = 1e10; z1 = 1e10; |
24 |
|
|
x2 = -1e10; y2 = -1e10; z2 = -1e10; |
25 |
|
|
} |
26 |
|
|
|
27 |
|
|
void ray_int::end_fig () t_no |
28 |
|
|
{ |
29 |
|
|
x1 -= 0.1; y1 -= 0.1; z1 -= 0.1; |
30 |
|
|
x2 += 0.1; y2 += 0.1; z2 += 0.2; |
31 |
|
|
} |
32 |
|
|
|
33 |
|
|
void ray_int::clip (const vec &v) t_no |
34 |
|
|
{ |
35 |
|
|
if (x1 > v[0]) x1 = v[0]; |
36 |
|
|
if (y1 > v[1]) y1 = v[1]; |
37 |
|
|
if (z1 > v[2]) z1 = v[2]; |
38 |
|
|
|
39 |
|
|
if (x2 < v[0]) x2 = v[0]; |
40 |
|
|
if (y2 < v[1]) y2 = v[1]; |
41 |
|
|
if (z2 < v[2]) z2 = v[2]; |
42 |
|
|
} |
43 |
|
|
|
44 |
|
|
void ray_int::check_attrs (const attribute_set &attr) t_err |
45 |
|
|
{ |
46 |
|
|
width = attr ("width",1); |
47 |
|
|
color = attr ("color", vec( 0.8, 0.8, 0.8)); |
48 |
|
|
} |
49 |
|
|
|
50 |
|
|
#define OV(v) v[0] << " " << v[1] << " " << v[2] |
51 |
|
|
|
52 |
|
|
void ray_int::segment (const point &a, const point &b) t_err |
53 |
|
|
{ |
54 |
|
|
check_attrs (a.attr); |
55 |
|
|
|
56 |
|
|
clip (a.v); |
57 |
|
|
clip (b.v); |
58 |
|
|
|
59 |
|
|
o << "cylinder " << width << " " << OV(a.v) << " " << OV(b.v) << endl; |
60 |
|
|
} |
61 |
|
|
|
62 |
|
|
void ray_int::object (const points &v) t_err |
63 |
|
|
{ |
64 |
|
|
points p = v; |
65 |
|
|
// cerr << "polygon "; for (points::const_iterator j = v.begin (); j != v.end (); j++) cerr << j->first << " "; cerr << endl; |
66 |
|
|
if (v.size () < 3) |
67 |
|
|
return; |
68 |
|
|
|
69 |
|
|
if (winding (p) < 0) |
70 |
|
|
reverse (p.begin (), p.end ()); |
71 |
|
|
|
72 |
|
|
check_attrs (p.front ().attr); |
73 |
|
|
|
74 |
|
|
points::const_iterator a, b, c; |
75 |
|
|
c = p.begin (); |
76 |
|
|
a = c++; |
77 |
|
|
b = c++; |
78 |
|
|
|
79 |
|
|
clip (a->v); |
80 |
|
|
clip (b->v); |
81 |
|
|
while (c != p.end ()) |
82 |
|
|
{ |
83 |
|
|
clip (c->v); |
84 |
|
|
o << "triangle " << OV(a->v) << " " << OV(a->n) << endl; |
85 |
|
|
o << " " << OV(b->v) << " " << OV(b->n) << endl; |
86 |
|
|
o << " " << OV(c->v) << " " << OV(c->n) << endl; |
87 |
|
|
++b; ++c; |
88 |
|
|
} |
89 |
|
|
|
90 |
|
|
o << endl; |
91 |
|
|
} |
92 |
|
|
|
93 |
|
|
|