/usr/include/compiz/opengl/vector.h is in compiz-dev 1:0.9.7.6-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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* Copyright © 2008 Danny Baumann
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Dennis Kasprzyk not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior permission.
* Dennis Kasprzyk makes no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* DENNIS KASPRZYK DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
* NO EVENT SHALL DENNIS KASPRZYK BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Authors: Danny Baumann <maniac@compiz-fusion.org>
*/
#ifndef _GLVECTOR_H
#define _GLVECTOR_H
/**
* Class which describes a point or vector
* in 3D space
*/
class GLVector {
public:
typedef enum {
x,
y,
z,
w
} VectorCoordsEnum;
GLVector ();
GLVector (float x, float y, float z, float w);
/**
* Returns a reference to the x, y, z or w value by using
* 0, 1, 2, 3 as array-access items
*/
float& operator[] (int item);
/**
* Returns a reference to the x, y, z or w value by using
* x, y, z, w as array-access items
*/
float& operator[] (VectorCoordsEnum coord);
/**
* Returns a readonly x, y, z or w value by using
* 0, 1, 2, 3 as array-access items
*/
const float operator[] (int item) const;
/**
* Returns a readonly x, y, z or w value by using
* x, y, z, w as array-access items
*/
const float operator[] (VectorCoordsEnum coord) const;
/**
* Adds all elements in a GLVector
*/
GLVector& operator+= (const GLVector& rhs);
/**
* Subtracts all elements in a GLVector
*/
GLVector& operator-= (const GLVector& rhs);
/**
* Scales all elements in a vector
* @param k Scale factor
*/
GLVector& operator*= (const float k);
/**
* Scales all elements in a vector by 1 / k
* @param k Scale factor
*/
GLVector& operator/= (const float k);
GLVector& operator^= (const GLVector& rhs);
/**
* Returns the norm of this vector
*/
float norm ();
/**
* Returns the normalized version of the vector
*/
GLVector& normalize ();
/**
* Returns the homogenized version of the vector
*/
GLVector& homogenize ();
private:
friend GLVector operator+ (const GLVector& lhs,
const GLVector& rhs);
friend GLVector operator- (const GLVector& lhs,
const GLVector& rhs);
friend GLVector operator- (const GLVector& vector);
friend float operator* (const GLVector& lhs,
const GLVector& rhs);
friend GLVector operator* (const float k,
const GLVector& vector);
friend GLVector operator* (const GLVector& vector,
const float k);
friend GLVector operator/ (const GLVector& lhs,
const GLVector& rhs);
friend GLVector operator^ (const GLVector& lhs,
const GLVector& rhs);
float v[4];
};
#endif
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