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-rw-r--r--libraries/irrlicht-1.8/include/line3d.h288
1 files changed, 144 insertions, 144 deletions
diff --git a/libraries/irrlicht-1.8/include/line3d.h b/libraries/irrlicht-1.8/include/line3d.h
index 6ec4e70..5e1437a 100644
--- a/libraries/irrlicht-1.8/include/line3d.h
+++ b/libraries/irrlicht-1.8/include/line3d.h
@@ -1,144 +1,144 @@
1// Copyright (C) 2002-2012 Nikolaus Gebhardt 1// Copyright (C) 2002-2012 Nikolaus Gebhardt
2// This file is part of the "Irrlicht Engine". 2// This file is part of the "Irrlicht Engine".
3// For conditions of distribution and use, see copyright notice in irrlicht.h 3// For conditions of distribution and use, see copyright notice in irrlicht.h
4 4
5#ifndef __IRR_LINE_3D_H_INCLUDED__ 5#ifndef __IRR_LINE_3D_H_INCLUDED__
6#define __IRR_LINE_3D_H_INCLUDED__ 6#define __IRR_LINE_3D_H_INCLUDED__
7 7
8#include "irrTypes.h" 8#include "irrTypes.h"
9#include "vector3d.h" 9#include "vector3d.h"
10 10
11namespace irr 11namespace irr
12{ 12{
13namespace core 13namespace core
14{ 14{
15 15
16//! 3D line between two points with intersection methods. 16//! 3D line between two points with intersection methods.
17template <class T> 17template <class T>
18class line3d 18class line3d
19{ 19{
20 public: 20 public:
21 21
22 //! Default constructor 22 //! Default constructor
23 /** line from (0,0,0) to (1,1,1) */ 23 /** line from (0,0,0) to (1,1,1) */
24 line3d() : start(0,0,0), end(1,1,1) {} 24 line3d() : start(0,0,0), end(1,1,1) {}
25 //! Constructor with two points 25 //! Constructor with two points
26 line3d(T xa, T ya, T za, T xb, T yb, T zb) : start(xa, ya, za), end(xb, yb, zb) {} 26 line3d(T xa, T ya, T za, T xb, T yb, T zb) : start(xa, ya, za), end(xb, yb, zb) {}
27 //! Constructor with two points as vectors 27 //! Constructor with two points as vectors
28 line3d(const vector3d<T>& start, const vector3d<T>& end) : start(start), end(end) {} 28 line3d(const vector3d<T>& start, const vector3d<T>& end) : start(start), end(end) {}
29 29
30 // operators 30 // operators
31 31
32 line3d<T> operator+(const vector3d<T>& point) const { return line3d<T>(start + point, end + point); } 32 line3d<T> operator+(const vector3d<T>& point) const { return line3d<T>(start + point, end + point); }
33 line3d<T>& operator+=(const vector3d<T>& point) { start += point; end += point; return *this; } 33 line3d<T>& operator+=(const vector3d<T>& point) { start += point; end += point; return *this; }
34 34
35 line3d<T> operator-(const vector3d<T>& point) const { return line3d<T>(start - point, end - point); } 35 line3d<T> operator-(const vector3d<T>& point) const { return line3d<T>(start - point, end - point); }
36 line3d<T>& operator-=(const vector3d<T>& point) { start -= point; end -= point; return *this; } 36 line3d<T>& operator-=(const vector3d<T>& point) { start -= point; end -= point; return *this; }
37 37
38 bool operator==(const line3d<T>& other) const 38 bool operator==(const line3d<T>& other) const
39 { return (start==other.start && end==other.end) || (end==other.start && start==other.end);} 39 { return (start==other.start && end==other.end) || (end==other.start && start==other.end);}
40 bool operator!=(const line3d<T>& other) const 40 bool operator!=(const line3d<T>& other) const
41 { return !(start==other.start && end==other.end) || (end==other.start && start==other.end);} 41 { return !(start==other.start && end==other.end) || (end==other.start && start==other.end);}
42 42
43 // functions 43 // functions
44 //! Set this line to a new line going through the two points. 44 //! Set this line to a new line going through the two points.
45 void setLine(const T& xa, const T& ya, const T& za, const T& xb, const T& yb, const T& zb) 45 void setLine(const T& xa, const T& ya, const T& za, const T& xb, const T& yb, const T& zb)
46 {start.set(xa, ya, za); end.set(xb, yb, zb);} 46 {start.set(xa, ya, za); end.set(xb, yb, zb);}
47 //! Set this line to a new line going through the two points. 47 //! Set this line to a new line going through the two points.
48 void setLine(const vector3d<T>& nstart, const vector3d<T>& nend) 48 void setLine(const vector3d<T>& nstart, const vector3d<T>& nend)
49 {start.set(nstart); end.set(nend);} 49 {start.set(nstart); end.set(nend);}
50 //! Set this line to new line given as parameter. 50 //! Set this line to new line given as parameter.
51 void setLine(const line3d<T>& line) 51 void setLine(const line3d<T>& line)
52 {start.set(line.start); end.set(line.end);} 52 {start.set(line.start); end.set(line.end);}
53 53
54 //! Get length of line 54 //! Get length of line
55 /** \return Length of line. */ 55 /** \return Length of line. */
56 T getLength() const { return start.getDistanceFrom(end); } 56 T getLength() const { return start.getDistanceFrom(end); }
57 57
58 //! Get squared length of line 58 //! Get squared length of line
59 /** \return Squared length of line. */ 59 /** \return Squared length of line. */
60 T getLengthSQ() const { return start.getDistanceFromSQ(end); } 60 T getLengthSQ() const { return start.getDistanceFromSQ(end); }
61 61
62 //! Get middle of line 62 //! Get middle of line
63 /** \return Center of line. */ 63 /** \return Center of line. */
64 vector3d<T> getMiddle() const 64 vector3d<T> getMiddle() const
65 { 65 {
66 return (start + end)/(T)2; 66 return (start + end)/(T)2;
67 } 67 }
68 68
69 //! Get vector of line 69 //! Get vector of line
70 /** \return vector of line. */ 70 /** \return vector of line. */
71 vector3d<T> getVector() const 71 vector3d<T> getVector() const
72 { 72 {
73 return end - start; 73 return end - start;
74 } 74 }
75 75
76 //! Check if the given point is between start and end of the line. 76 //! Check if the given point is between start and end of the line.
77 /** Assumes that the point is already somewhere on the line. 77 /** Assumes that the point is already somewhere on the line.
78 \param point The point to test. 78 \param point The point to test.
79 \return True if point is on the line between start and end, else false. 79 \return True if point is on the line between start and end, else false.
80 */ 80 */
81 bool isPointBetweenStartAndEnd(const vector3d<T>& point) const 81 bool isPointBetweenStartAndEnd(const vector3d<T>& point) const
82 { 82 {
83 return point.isBetweenPoints(start, end); 83 return point.isBetweenPoints(start, end);
84 } 84 }
85 85
86 //! Get the closest point on this line to a point 86 //! Get the closest point on this line to a point
87 /** \param point The point to compare to. 87 /** \param point The point to compare to.
88 \return The nearest point which is part of the line. */ 88 \return The nearest point which is part of the line. */
89 vector3d<T> getClosestPoint(const vector3d<T>& point) const 89 vector3d<T> getClosestPoint(const vector3d<T>& point) const
90 { 90 {
91 vector3d<T> c = point - start; 91 vector3d<T> c = point - start;
92 vector3d<T> v = end - start; 92 vector3d<T> v = end - start;
93 T d = (T)v.getLength(); 93 T d = (T)v.getLength();
94 v /= d; 94 v /= d;
95 T t = v.dotProduct(c); 95 T t = v.dotProduct(c);
96 96
97 if (t < (T)0.0) 97 if (t < (T)0.0)
98 return start; 98 return start;
99 if (t > d) 99 if (t > d)
100 return end; 100 return end;
101 101
102 v *= t; 102 v *= t;
103 return start + v; 103 return start + v;
104 } 104 }
105 105
106 //! Check if the line intersects with a shpere 106 //! Check if the line intersects with a shpere
107 /** \param sorigin: Origin of the shpere. 107 /** \param sorigin: Origin of the shpere.
108 \param sradius: Radius of the sphere. 108 \param sradius: Radius of the sphere.
109 \param outdistance: The distance to the first intersection point. 109 \param outdistance: The distance to the first intersection point.
110 \return True if there is an intersection. 110 \return True if there is an intersection.
111 If there is one, the distance to the first intersection point 111 If there is one, the distance to the first intersection point
112 is stored in outdistance. */ 112 is stored in outdistance. */
113 bool getIntersectionWithSphere(vector3d<T> sorigin, T sradius, f64& outdistance) const 113 bool getIntersectionWithSphere(vector3d<T> sorigin, T sradius, f64& outdistance) const
114 { 114 {
115 const vector3d<T> q = sorigin - start; 115 const vector3d<T> q = sorigin - start;
116 T c = q.getLength(); 116 T c = q.getLength();
117 T v = q.dotProduct(getVector().normalize()); 117 T v = q.dotProduct(getVector().normalize());
118 T d = sradius * sradius - (c*c - v*v); 118 T d = sradius * sradius - (c*c - v*v);
119 119
120 if (d < 0.0) 120 if (d < 0.0)
121 return false; 121 return false;
122 122
123 outdistance = v - core::squareroot ( d ); 123 outdistance = v - core::squareroot ( d );
124 return true; 124 return true;
125 } 125 }
126 126
127 // member variables 127 // member variables
128 128
129 //! Start point of line 129 //! Start point of line
130 vector3d<T> start; 130 vector3d<T> start;
131 //! End point of line 131 //! End point of line
132 vector3d<T> end; 132 vector3d<T> end;
133}; 133};
134 134
135 //! Typedef for an f32 line. 135 //! Typedef for an f32 line.
136 typedef line3d<f32> line3df; 136 typedef line3d<f32> line3df;
137 //! Typedef for an integer line. 137 //! Typedef for an integer line.
138 typedef line3d<s32> line3di; 138 typedef line3d<s32> line3di;
139 139
140} // end namespace core 140} // end namespace core
141} // end namespace irr 141} // end namespace irr
142 142
143#endif 143#endif
144 144
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