86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
|
|
* This file is part of 0 A.D.
|
|
*
|
|
* 0 A.D. is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 0 A.D. is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/*
|
|
* Provides an interface for a vector in R3 and allows vector and
|
|
* scalar operations on it
|
|
*/
|
|
|
|
#ifndef INCLUDED_VECTOR3D
|
|
#define INCLUDED_VECTOR3D
|
|
|
|
class CFixedVector3D;
|
|
|
|
class CVector3D
|
|
{
|
|
public:
|
|
float X, Y, Z;
|
|
|
|
public:
|
|
CVector3D () : X(0.0f), Y(0.0f), Z(0.0f) {}
|
|
CVector3D (float x, float y, float z) : X(x), Y(y), Z(z) {}
|
|
CVector3D (const CFixedVector3D& v);
|
|
|
|
int operator!() const;
|
|
|
|
float& operator[](int index) { return *((&X)+index); }
|
|
const float& operator[](int index) const { return *((&X)+index); }
|
|
|
|
//vector equality (testing float equality, so please be careful if necessary)
|
|
bool operator== (const CVector3D &vector) const;
|
|
bool operator!= (const CVector3D &vector) const { return !operator==(vector); }
|
|
|
|
//vector addition
|
|
CVector3D operator + (const CVector3D &vector) const ;
|
|
//vector addition/assignment
|
|
CVector3D &operator += (const CVector3D &vector);
|
|
|
|
//vector subtraction
|
|
CVector3D operator - (const CVector3D &vector) const ;
|
|
//vector subtraction/assignment
|
|
CVector3D &operator -= (const CVector3D &vector);
|
|
|
|
//scalar multiplication
|
|
CVector3D operator * (float value) const ;
|
|
//scalar multiplication/assignment
|
|
CVector3D& operator *= (float value);
|
|
|
|
// negation
|
|
CVector3D operator-() const;
|
|
|
|
public:
|
|
void Set (float x, float y, float z);
|
|
void Clear ();
|
|
|
|
//Dot product
|
|
float Dot (const CVector3D &vector) const;
|
|
//Cross product
|
|
CVector3D Cross (const CVector3D &vector) const;
|
|
|
|
//Returns length of the vector
|
|
float Length () const;
|
|
float LengthSquared () const;
|
|
void Normalize ();
|
|
|
|
// Returns 3 element array of floats, e.g. for glVertex3fv
|
|
const float* GetFloatArray() const { return &X; }
|
|
};
|
|
|
|
extern float MaxComponent(const CVector3D& v);
|
|
|
|
#endif
|