Revision 225,
1.0 KB
checked in by mattausch, 19 years ago
(diff) |
updated bsp trees
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[162] | 1 | #ifndef _Plane3_H__ |
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| 2 | #define _Plane3_H__ |
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| 3 | |
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| 4 | #include "Vector3.h" |
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| 5 | |
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| 6 | |
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| 7 | /** 3D Plane */ |
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| 8 | class Plane3 { |
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| 9 | public: |
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| 10 | Vector3 mNormal; |
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| 11 | float mD; |
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| 12 | |
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| 13 | Plane3() {} |
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| 14 | |
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| 15 | Plane3(const Vector3 &a, |
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| 16 | const Vector3 &b, |
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| 17 | const Vector3 &c |
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| 18 | ) { |
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| 19 | Vector3 v1=a-b, v2=c-b; |
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| 20 | mNormal = Normalize(CrossProd(v2,v1)); |
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| 21 | mD = -DotProd(b, mNormal); |
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[209] | 22 | } |
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[162] | 23 | |
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[209] | 24 | Plane3(const Vector3 &normal, |
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| 25 | const Vector3 &point |
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| 26 | ):mNormal(normal) |
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| 27 | { |
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| 28 | mD = -DotProd(normal, point); |
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[162] | 29 | } |
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| 30 | |
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[177] | 31 | float Distance(const Vector3 &v) const { |
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| 32 | return DotProd(v, mNormal) + mD; |
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| 33 | } |
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| 34 | |
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| 35 | int Side(const Vector3 &v, const float threshold = 1e-6) const { |
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| 36 | return signum(Distance(v), threshold); |
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| 37 | } |
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[209] | 38 | |
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| 39 | Vector3 FindIntersection(const Vector3 &a, |
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| 40 | const Vector3 &b, |
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| 41 | float *t = NULL, |
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| 42 | bool *coplanar = NULL |
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[225] | 43 | ) const {return Vector3(0,0,0);} // TODO |
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[209] | 44 | |
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| 45 | friend bool |
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| 46 | PlaneIntersection(const Plane3 &a, const Plane3 &b, const Plane3 &c, Vector3 &result); |
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[177] | 47 | |
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[162] | 48 | friend ostream &operator<<(ostream &s, const Plane3 p) { |
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| 49 | s<<p.mNormal<<" "<<p.mD; |
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| 50 | return s; |
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| 51 | } |
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| 52 | |
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[209] | 53 | |
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[162] | 54 | }; |
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| 55 | |
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| 56 | |
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| 57 | |
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| 58 | |
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| 59 | #endif |
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