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SbBox2d.h
1 #ifndef COIN_SBBOX2D_H
2 #define COIN_SBBOX2D_H
3 
4 /**************************************************************************\
5  *
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25 \**************************************************************************/
26 
27 #include <Inventor/SbVec2d.h>
28 
29 class SbBox2f;
30 class SbBox2s;
31 class SbBox2i32;
32 
33 class COIN_DLL_API SbBox2d {
34 public:
35  SbBox2d(void) { makeEmpty(); }
36  SbBox2d(double xmin, double ymin, double xmax, double ymax)
37  : minpt(xmin, ymin), maxpt(xmax, ymax) { }
38  SbBox2d(const SbVec2d & minpoint, const SbVec2d & maxpoint)
39  : minpt(minpoint), maxpt(maxpoint) { }
40  explicit SbBox2d(const SbBox2f & box) { setBounds(box); }
41  explicit SbBox2d(const SbBox2s & box) { setBounds(box); }
42  explicit SbBox2d(const SbBox2i32 & box) { setBounds(box); }
43 
44  SbBox2d & setBounds(double xmin, double ymin, double xmax, double ymax)
45  { minpt.setValue(xmin, ymin); maxpt.setValue(xmax, ymax); return *this; }
46  SbBox2d & setBounds(const SbVec2d & minpoint, const SbVec2d & maxpoint)
47  { minpt = minpoint; maxpt = maxpoint; return *this; }
48  SbBox2d & setBounds(const SbBox2f & box);
49  SbBox2d & setBounds(const SbBox2s & box);
50  SbBox2d & setBounds(const SbBox2i32 & box);
51 
52  void getBounds(double & xmin, double & ymin, double & xmax, double & ymax) const
53  { minpt.getValue(xmin, ymin); maxpt.getValue(xmax, ymax); }
54  void getBounds(SbVec2d & minpoint, SbVec2d & maxpoint) const
55  { minpoint = minpt; maxpoint = maxpt; }
56 
57  const SbVec2d & getMin(void) const { return minpt; }
58  SbVec2d & getMin(void) { return minpt; }
59  const SbVec2d & getMax(void) const { return maxpt; }
60  SbVec2d & getMax(void) { return maxpt; }
61 
62  void extendBy(const SbVec2d & point);
63  void extendBy(const SbBox2d & box);
64  void makeEmpty(void);
65  SbBool isEmpty(void) const { return (maxpt[0] < minpt[0]); }
66  SbBool hasArea(void) const { return ((maxpt[0] > minpt[0]) && (maxpt[1] > minpt[1])); }
67 
68  SbBool intersect(const SbVec2d & point) const;
69  SbBool intersect(const SbBox2d & box) const;
70  SbVec2d getClosestPoint(const SbVec2d & p) const;
71  SbBool findIntersection(const SbVec2d & a, const SbVec2d & b, SbVec2d & ia, SbVec2d & ib) const;
72 
73  SbVec2d getCenter(void) const { return (minpt + maxpt) * 0.5; }
74  void getOrigin(double & originX, double & originY) const
75  { minpt.getValue(originX, originY); }
76  void getSize(double & sizeX, double & sizeY) const
77  { if (isEmpty()) { sizeX = sizeY = 0.0; }
78  else { sizeX = maxpt[0] - minpt[0]; sizeY = maxpt[1] - minpt[1]; } }
79  double getAspectRatio(void) const
80  { SbDividerChk("SbBox2d::getAspectRatio()", maxpt[1] - minpt[1]);
81  return (maxpt[0] - minpt[0]) / (maxpt[1] - minpt[1]); }
82 
83 private:
84  SbVec2d minpt, maxpt;
85 
86 }; // SbBox2d
87 
88 COIN_DLL_API inline int operator == (const SbBox2d & b1, const SbBox2d & b2) {
89  return ((b1.getMin() == b2.getMin()) && (b1.getMax() == b2.getMax()));
90 }
91 
92 COIN_DLL_API inline int operator != (const SbBox2d & b1, const SbBox2d & b2) {
93  return !(b1 == b2);
94 }
95 
96 #endif // !COIN_SBBOX2D_H
SbBox2d & setBounds(double xmin, double ymin, double xmax, double ymax)
Definition: SbBox2d.h:44
SbBox2d(void)
Definition: SbBox2d.h:35
SbBox2d(const SbVec2d &minpoint, const SbVec2d &maxpoint)
Definition: SbBox2d.h:38
The SbBox2d class is a 2 dimensional box with double precision corner coordinates.This box class is used by many other classes in Coin for data exchange and storage. It provides two box corners with double precision coordinates, which is among other things useful for representing screen or canvas dimensions in normalized coordinates.
Definition: SbBox2d.h:33
int operator!=(const SbBox2d &b1, const SbBox2d &b2)
Definition: SbBox2d.h:92
void getOrigin(double &originX, double &originY) const
Definition: SbBox2d.h:74
int operator==(const SbBox2d &b1, const SbBox2d &b2)
Definition: SbBox2d.h:88
double getAspectRatio(void) const
Definition: SbBox2d.h:79
void getSize(double &sizeX, double &sizeY) const
Definition: SbBox2d.h:76
void getBounds(SbVec2d &minpoint, SbVec2d &maxpoint) const
Definition: SbBox2d.h:54
SbVec2d & getMin(void)
Definition: SbBox2d.h:58
SbBool isEmpty(void) const
Definition: SbBox2d.h:65
const SbVec2d & getMin(void) const
Definition: SbBox2d.h:57
const SbVec2d & getMax(void) const
Definition: SbBox2d.h:59
SbBool hasArea(void) const
Definition: SbBox2d.h:66
The SbBox2s class is a 2 dimensional box with short integer coordinates.This box class is used by oth...
Definition: SbBox2s.h:34
SbBox2d(double xmin, double ymin, double xmax, double ymax)
Definition: SbBox2d.h:36
The SbVec2d class is a 2 dimensional vector with double precision floating point coordinates.This vector class is used by many other classes in Coin. It provides storage for a vector in 2 dimensions aswell as simple floating point arithmetic operations on this vector.
Definition: SbVec2d.h:39
The SbBox2f class is a 2 dimensional box with floating point corner coordinates.This box class is use...
Definition: SbBox2f.h:33
SbBox2d & setBounds(const SbVec2d &minpoint, const SbVec2d &maxpoint)
Definition: SbBox2d.h:46
SbVec2d getCenter(void) const
Definition: SbBox2d.h:73
SbVec2d & getMax(void)
Definition: SbBox2d.h:60
void getBounds(double &xmin, double &ymin, double &xmax, double &ymax) const
Definition: SbBox2d.h:52

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