#ifndef dpl_host_h
#define dpl_host_h

#include "dpltypes.h"

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

   Copyright DIVISION Limited (c) 1994
   All rights reserved


   File    : dpl_host.h
   Project : dpl interface
             host / dependent section
   Author  : PJA
   Date    : 22/06/94

   Function: Introduces the host-specific functions
             this is in effect the definition of the
             porting layer for DPL

   History : Rev 1.0, 23 / 06 / 1994

   The renderer must supply entrypoints to manipulate
   dpl-style lists and trees, and support must be provided
   for the hide, unhide and flush methods of the dpl classes.

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

extern int32 dpl_WarningLevel;
extern char *__lastop;

extern void
ghost_dpl_init( char *dpl_arg );

extern void
ghost_dpl_bind_functions   ( dpl_node * );

extern void
ghost_dpl_add_list_item    ( dpl_superlist *head, dpl_node *node );
extern void
ghost_dpl_remove_list_item ( dpl_superlist *head, dpl_node *node );

extern void
ghost_dpl_nest_dcs         ( dpl_DCS *parent, dpl_DCS *node );
extern void
ghost_dpl_prune_dcs        ( dpl_DCS *parent, dpl_DCS *child );
extern void
ghost_dpl_link_dcs         ( dpl_DCS *bro, dpl_DCS *sis );

void
ghost_dpl_morph_object ( dpl_OBJECT *morphed,
                         dpl_OBJECT *a,
                         dpl_OBJECT *b,
                         float32 alpha );

extern void
ghost_dpl_draw_scene ( int32 dubblebuffrd );
extern int32
ghost_dpl_draw_scene_complete ( void );
extern void
ghost_dpl_wait_draw_scene_complete ( void );

extern void
ghost_dpl_version ( dpl_VERSION *v );
extern void
ghost_dpl_statistics ( dpl_STATISTICS *s );

extern int32
ghost_dpl_set_texmap_texels  ( dpl_TEXMAP *tm,
                               int32 *texels,
                               int32 u_size,
                               int32 v_size,
                               int32 mode );

extern int32
ghost_dpl_set_geometry_vertices ( dpl_GEOMETRY *gg,
                                  dpl_VERTEX_LIST *vl,
                                  dpl_CONNECTION_LIST *cl,
                                  int32 vertices,
                                  int32 connections );

extern void
ghost_dpl_readpixels ( int32 *pixels, int32 x, int32 y, int32 n_pixels );

extern dpl_INSTANCE *
ghost_dpl_sectvector ( dpl_POINT sect,
                       float32 x0, float32 y0, float32 z0,
                       float32 x1, float32 y1, float32 z1 );

extern dpl_INSTANCE *
ghost_dpl_sectpixel ( dpl_POINT sect, float32 x, float32 y );



#endif