#define  SMOOTH         1
#define  FACETTED       0
#define  PHONG_SPEC     0
#define  BLINN          1
#define  COOKE_TORRENCE 2
#define  X_RES          1024  
#define  Y_RES          1024  

#define  PER_FACE       0
#define  WRAPPED        1

#define FNAMELEN        256
#define MAXOBJS         250
#define MAXLIGHTS       100

#define SCREEN          0


 typedef struct text_td
   {
     int      type;
     char     *name;
     float    **texture;
     int      u_size, v_size;
     int      repetition;
   } text_td;

 typedef struct color_text_td
   {
     int      type;
     char     *name;
     rgb_td   **texture;
     int      u_size, v_size;
     int      repetition;
   } color_text_td;

 typedef struct txt_u_td
          {
              float   ax,
                      cx,
                      dx,
                       a;                      
	  } txt_u_td;
	  
  typedef struct txt_v_td
          {
              float   ay,
                      cy,
                      dy;
	  } txt_v_td;	 

 typedef struct c_t_illum_td
          {
              rgb_td   f_0,
                       indx_refrac;
	  } c_t_illum_td;

 typedef struct lght_parm_td
          {
              xyz_td         position;
              xyz_td         direction; 
              rgb_td         color;
              float          angle; /* actually the cos of the angle */
              long           fall_off;

	  } lght_parm_td;
	 

 typedef struct illum_parm_td
          {
	    rgb_td     *color;
            rgb_td     *specular;
	    xyz_td     *normal;     /* actually ABS of it for texturing */
            xyz_td     *eye_vector;
	    xyz_td     **l_vector;
	    xyz_td     **h_vector;
	    float      amb_coef;
	    float      diff_coef;
	    float      spec_coef;
	    float      spec_power;
	    float      mintr;
	    float      maxtr;
	    float      indx_refrac;
	    int        back_face;   /* display back faces ? */
            int        illum_type;  /* illumination - phong, blinn, cooke-t */
	    int        shade_type;  /* shading type - facetted, phong */
	    int        intensity_type;
	    text_td    intensity_txt;
	 color_text_td color_txt;
            int        color_type;  /* constant, per poly, per vertex, mapped*/
            int        normal_type; /* constant, mapped, proc*/
	    text_td    normal_txt;  /* normal texture structure */
	    int        env_type;    /* env mapping type none,mapped, proc */
	 color_text_td env_map;     /* environment mapping type */
	    int        transp_type; /* transparency type  none,mapped, proc */
	    text_td    transp_txt;  /* transparency texturing type */
	    float      *transp;     /* transparency per polygon */
	                 /* the following two things refer to object space */
	    xyz_td     scale_obj;   /*how to scale obj to get into -1:1 space*/
	    xyz_td     trans_obj;   /*how to trans obj to get into -1:1 space*/
	  } illum_parm_td;

	 

 typedef struct viewport_td
          {
              float   vl,
                      vr,
                      vt,
                      vb;                      
	  } viewport_td;