/* $XConsortium: util.h,v 5.2 94/04/17 20:41:56 rws Exp $ */

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Copyright 1989, 1990, 1991 by Sun Microsystems, Inc. 

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******************************************************************/

#ifndef PHG_UTIL_H_INCLUDED
#define PHG_UTIL_H_INCLUDED

/* Also see mat_utils.h for more utility functions. */
/* TODO: get rid of mat_utils.h, it's contents have already been moved to
 * here.
 */

extern char
    *phg_path(),
    *phg_grow_scratch();

extern int
    phg_tranpt3(),
    phg_tranpts3(),
    phg_mat3_equal();

extern float
    phg_vector_dot_prod(),
    phg_vector_length();

extern	void
    phg_mat_scale(),
    phg_mat_trans(),
    phg_mat_shear_z(),
    phg_mat_rot_x(),
    phg_mat_rot_y(),
    phg_mat_rot_z(),
    phg_mat_mul_pt(),
    phg_mat_copy(),
    phg_mat_mul(),
    phg_mat_mul_3x3(),
    phg_mat_identity (),
    phg_mat_inv(),	/* invert a 4 x 4 matrix */
    phg_vector_cross_prod(),
    phg_vector_normalize(),
    phg_mat_print(),
    phg_vector_print();

extern caddr_t
    phg_utx_interior_bndl_from_pex(),
    phg_utx_interior_bndl_to_pex(),
    phg_utx_line_bndl_from_pex(),
    phg_utx_line_bndl_to_pex(),
    phg_utx_marker_bndl_from_pex(),
    phg_utx_marker_bndl_to_pex(),
    phg_utx_text_bndl_from_pex(),
    phg_utx_text_bndl_to_pex(),
    phg_utx_edge_bndl_from_pex(),
    phg_utx_edge_bndl_to_pex(),
    phg_utx_pattern_entry_from_pex(),
    phg_utx_pattern_entry_to_pex(),
    phg_utx_dcue_entry_from_pex(),
    phg_utx_dcue_entry_to_pex(),
    phg_utx_light_entry_from_pex(),
    phg_utx_light_entry_to_pex(),
    phg_utx_view_entry_from_pex(),
    phg_utx_view_entry_to_pex(),
    phg_utx_colour_entry_from_pex(),
    phg_utx_colour_entry_to_pex(),
    phg_utx_colrmap_entry_from_pex(),
    phg_utx_colrmap_entry_to_pex(),
    phg_utx_ws_xform_from_pex();

extern int
    phg_utx_pex_supported();

/* Conversion utilities */
extern int		phg_utx_ptlst4_to_pex();
extern int		phg_utx_ptlst3_to_pex();
extern int		phg_utx_ptlst_to_pex();
extern int		phg_utx_ptlst4_from_pex();
extern int		phg_utx_ptlst3_from_pex();
extern int		phg_utx_ptlst_from_pex();
extern int		phg_utx_vdata_size();
extern int		phg_utx_vdata_to_pex();
extern int		phg_utx_fdata_to_pex();
extern Pelem_type	phg_utx_pex_eltype_to_phigs();
extern int		phg_utx_bitmask_to_intlst();
extern int		phg_utx_count_bits();
extern char*		phg_utx_vdata_from_pex();
extern char*		phg_utx_fdata_from_pex();
extern int		phg_utx_convert_colour();
extern int		phg_utx_map_update_state();
extern int		pgh_utx_compute_el_size();
extern void		phg_utx_el_data_from_pex();
extern int		phg_utx_build_pex_oc();
extern void		phg_register_timer_func();
extern void		phg_register_signal_func();
extern int		phg_utx_encode_text();

extern Display*		phg_utx_open_pex_display();

#define PHG_MAT_COPY(to, from) \
	bcopy((char *)(from), (char *)(to), sizeof(Pmatrix3)); 

/* Hash table utility stuff. */
typedef struct _Htab	*Hash_table;

extern Hash_table	phg_ut_htab_create();
extern void		phg_ut_htab_destroy();
extern int		phg_ut_htab_add_entry();
extern caddr_t		phg_ut_htab_delete_entry();
extern int		phg_ut_htab_get_entry();
extern void		phg_ut_htab_change_data();
extern int		phg_ut_htab_num_entries();
extern int		phg_ut_htab_first_entry();
extern int		phg_ut_htab_next_entry();

#endif