49  * general colour map

    49  * general colour map

    50  */

    50  */

    51 class ColourMap

    51 class ColourMap

    52 {

    52 {

    53 public:

    53 public:

    54 	virtual Colour map(const Float &val) = 0;

    55 	virtual Colour map(const Float &val) = 0;

    55 };

    56 };

    56 

    57 

    57 /**

    58 /**

    58  * linear colour map

    59  * linear colour map

   104 	Vector3 center;

   105 	Vector3 center;

   105 	Float invsize;

   106 	Float invsize;

   106 public:

   107 public:

   107 	TextureMap(const Vector3 &acenter, const Float &size):

   108 	TextureMap(const Vector3 &acenter, const Float &size):

   108 		center(acenter), invsize(1./size) {};

   109 		center(acenter), invsize(1./size) {};

   109 	virtual void map(const Vector3 &point, Float &u, Float &v) = 0;

   111 	virtual void map(const Vector3 &point, Float &u, Float &v) = 0;

   110 };

   112 };

   111 

   113 

   112 /**

   114 /**

   113  * planar mapping

   115  * planar mapping

   255 		map->map(point, u,v);

   257 		map->map(point, u,v);

   256 		u = u - 0.5;

   258 		u = u - 0.5;

   257 		u -= floor(u);

   259 		u -= floor(u);

   258 		v = -(v - 0.5);

   260 		v = -(v - 0.5);

   259 		v -= floor(v);

   261 		v -= floor(v);

   261 	};

   263 	};

   262 };

   264 };

   263 

   265 

   264 /**

   266 /**

   265  * 2D checkers texture

   267  * 2D checkers texture