Stellarium  0.90.0
GeomMath.hpp
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20 
24 
25 #ifndef _GEOMMATH_HPP_
26 #define _GEOMMATH_HPP_
27 
28 #include "VecMath.hpp"
29 
31 class AABBox
32 {
33 public:
35  enum Corner
36  {
37  MinMinMin = 0, MaxMinMin, MaxMaxMin, MinMaxMin,
38  MinMinMax, MaxMinMax, MaxMaxMax, MinMaxMax,
39  CORNERCOUNT
40  };
41 
43  enum Face
44  {
45  Front = 0, Back, Bottom, Top, Left, Right,
46  FACECOUNT
47  };
48 
50  AABBox();
52  AABBox(const Vec3f& min, const Vec3f& max);
53 
55  void expand(const Vec3f& vec);
56 
58  void expand(const AABBox& box);
59 
62  void reset();
63 
68  bool isValid() const;
69 
71  float getVolume() const;
72 
74  Vec3f getCorner(AABBox::Corner corner) const;
75 
79  Vec4f getPlane(AABBox::Face p) const;
80 
85  Vec3f positiveVertex(Vec3f& normal) const;
90  Vec3f negativeVertex(Vec3f& normal) const;
91 
96 };
97 
99 class Line
100 {
101 public:
103  Line(const Vec3f &p, const Vec3f &dir);
104 
105  Vec3f startPoint;
108  Vec3f direction;
109 
112  Vec3f getPoint(float val);
113 };
114 
115 #endif
A simple line class, identified by a point and a direction vector.
Definition: GeomMath.hpp:99
void reset()
Resets minimum to infinity and maximum to -infinity (equivalent to creating a new AABBox with the def...
Face
Identifies a face of the AABB.
Definition: GeomMath.hpp:43
AABBox()
Creates an AABBox with minimum vertex set to infinity and maximum vertex set to -infinity.
Vec3f getCorner(AABBox::Corner corner) const
Returns the coordinates of the specified corner of the AABB.
Vec3f negativeVertex(Vec3f &normal) const
Returns a Vec3f that for each component either:
Vec3f endPoint
Equals startPoint + direction.
Definition: GeomMath.hpp:107
Vec3f min
The minimal extents of the box.
Definition: GeomMath.hpp:93
bool isValid() const
Returns true when each component of the minimum extents is smaller than the corresponding component o...
Vec3f positiveVertex(Vec3f &normal) const
Returns a Vec3f that for each component either:
float getVolume() const
Returns the volume of the bounding box.
Vec4f getPlane(AABBox::Face p) const
Return the plane equation in the general form for the specified face of the AABB as Vec4f...
void expand(const Vec3f &vec)
Updates the bounding box to include the specified vertex.
An axis-aligned bounding-box class.
Definition: GeomMath.hpp:31
Vec3f max
The maximal extents of the box.
Definition: GeomMath.hpp:95
Corner
Identifies a corner of the AABB.
Definition: GeomMath.hpp:35