text: /* Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   * 
   * The above notice and this permission notice shall be included in all copies
   * or substantial portions of the Software.
   * 
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  /* File for "Animation" lesson of the OpenGL tutorial on
   * www.videotutorialsrock.com
   */
  
  
  
  #ifndef VEC3F_H_INCLUDED
  #define VEC3F_H_INCLUDED
  
  #include <iostream>
  
  class Vec3f {
  	private:
  		float v[3];
  	public:
  		Vec3f();
  		Vec3f(float x, float y, float z);
  		
  		float &operator[](int index);
  		float operator[](int index) const;
  		
  		Vec3f operator*(float scale) const;
  		Vec3f operator/(float scale) const;
  		Vec3f operator+(const Vec3f &other) const;
  		Vec3f operator-(const Vec3f &other) const;
  		Vec3f operator-() const;
  		
  		const Vec3f &operator*=(float scale);
  		const Vec3f &operator/=(float scale);
  		const Vec3f &operator+=(const Vec3f &other);
  		const Vec3f &operator-=(const Vec3f &other);
  		
  		float magnitude() const;
  		float magnitudeSquared() const;
  		Vec3f normalize() const;
  		float dot(const Vec3f &other) const;
  		Vec3f cross(const Vec3f &other) const;
  };
  
  Vec3f operator*(float scale, const Vec3f &v);
  std::ostream &operator<<(std::ostream &output, const Vec3f &v);
  
  
  
  
  
  
  
  
  
  
  #endif
  