source: trunk/VUT/GtpVisibilityPreprocessor/src/Plane3.h @ 225

Revision 225, 1.0 KB checked in by mattausch, 19 years ago (diff)

updated bsp trees

Line 
1#ifndef _Plane3_H__
2#define _Plane3_H__
3
4#include "Vector3.h"
5
6 
7/** 3D Plane */
8class Plane3 {
9public:
10  Vector3 mNormal;
11  float mD;
12 
13  Plane3() {}
14 
15  Plane3(const Vector3 &a,
16         const Vector3 &b,
17         const Vector3 &c
18         ) {
19    Vector3 v1=a-b, v2=c-b;
20    mNormal = Normalize(CrossProd(v2,v1));
21    mD = -DotProd(b, mNormal);
22  }
23
24  Plane3(const Vector3 &normal,
25         const Vector3 &point
26         ):mNormal(normal)
27  {
28    mD = -DotProd(normal, point);
29  }
30
31  float Distance(const Vector3 &v) const {
32    return DotProd(v, mNormal) + mD;
33  }
34
35  int Side(const Vector3 &v, const float threshold = 1e-6) const {
36    return signum(Distance(v), threshold);
37  }
38
39  Vector3 FindIntersection(const Vector3 &a,
40                           const Vector3 &b,
41                           float *t = NULL,
42                           bool *coplanar = NULL
43                           ) const {return Vector3(0,0,0);} // TODO
44
45  friend bool
46  PlaneIntersection(const Plane3 &a, const Plane3 &b, const Plane3 &c, Vector3 &result);
47 
48  friend ostream &operator<<(ostream &s, const Plane3 p) {
49    s<<p.mNormal<<" "<<p.mD;
50    return s;
51  }
52
53 
54};
55 
56
57
58
59#endif
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