1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
#ifndef _VECTOR_H_
#define _VECTOR_H_
#include <cmath>
class Vector {
public:
Vector(float x0 = 0, float y0 = 0, float z0 = 0) : x(x0), y(y0), z(z0) {}
float getX() const {return x;}
float getY() const {return y;}
float getZ() const {return z;}
Vector operator+(const Vector &v) const {
return Vector(x+v.x, y+v.y, z+v.z);
}
Vector& operator+=(const Vector &v) {
x += v.x;
y += v.y;
z += v.z;
return *this;
}
Vector operator*(float f) const {
return Vector(x*f, y*f, z*f);
}
Vector operator/(float f) const {
return (*this)*(1/f);
}
Vector operator-() const {
return Vector(-x, -y, -z);
}
Vector cross(const Vector &v) const {
return Vector(y*v.z - z*v.y,
z*v.x - x*v.z,
x*v.y - y*v.x);
}
float dot(const Vector &v) const {
return x*v.x + y*v.y + z*v.z;
}
float length() const {
return sqrtf(x*x+y*y+z*z);
}
Vector normalize() const {
return *this/length();
}
protected:
float x, y, z;
};
#endif /*_VECTOR_H_*/
|
