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/*====================================================================
* uportals.h
*
* Copyright 1995, Silicon Graphics, Inc.
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics,
* Inc.; the contents of this file may not be disclosed to third
* parties, copied or duplicated in any form, in whole or in part,
* without the prior written permission of Silicon Graphics, Inc.
*
* RESTRICTED RIGHTS LEGEND:
* Use, duplication or disclosure by the Government is subject to
* restrictions as set forth in subdivision (c)(1)(ii) of the Rights
* in Technical Data and Computer Software clause at DFARS
* 252.227-7013, and/or in similar or successor clauses in the FAR,
* DOD or NASA FAR Supplement. Unpublished - rights reserved under the
* Copyright Laws of the United States.
*====================================================================*/
/**************************************************************************
*
* uportals.h - header file for the ultraportals library
*
* $Revision: 1.12 $
* $Date: 1997/02/11 08:40:49 $
* $Source: /disk6/Master/cvsmdev2/PR/include/uportals.h,v $
*
**************************************************************************/
#ifndef __ULTRAPORTALS_H__
#define __ULTRAPORTALS_H__
#include <ultra64.h>
#include "matrix.h"
#include "vector.h"
#ifdef __cplusplus
extern "C" {
#endif
#ifndef ENABLEPORTALS
#define ENABLEPORTALS
#endif
#define UP_MAXPVERTS 16 /* max number of portal verts */
#define UP_MAXCELLS 50 /* max number of cells */
#define UP_CELLNL 32 /* max length of cell names */
#define UP_OBNL 32 /* max length of obejct names */
typedef struct
{
vec3 min, max; /* min and max pts of the box */
} upBox;
typedef struct _upPortalData * _portalptr;
typedef struct _upCellData * _cellptr;
typedef struct _upObjectData * _objectptr;
typedef struct _upPortalData
{
int numverts; /* number of verts in the portal*/
_cellptr attached_cell; /* cell on the 'other side' */
vec3 verts[UP_MAXPVERTS]; /* the actual vertices */
#ifdef MVTVIEW
int mvt_id; /* if has mvt, this is the id */
#endif
} upPortalData;
typedef struct _upCellData
{
int numportals; /* number of portals */
int numobjects; /* number of objects */
int rendered; /* last frame number rendered */
_portalptr *portals; /* array for the actual portals */
_objectptr *objects; /* array for 'detail' objects */
upBox bbox; /* bounding box of the cell */
Gfx *dlist; /* associated display list */
char name[UP_CELLNL]; /* name of the cell */
float eyeheight; /* height to constrain eyept to */
int zone; /* current zone number */
} upCellData;
typedef struct _upObjectData
{
int rendered; /* last frame number rendered */
upBox bbox; /* bounding box for the object */
Gfx *dlist; /* associated display list */
char name[UP_OBNL]; /* name of the object */
} upObjectData;
typedef struct
{
int numcells; /* how many cells are there? */
upCellData cells[UP_MAXCELLS]; /* the actual cells */
Gfx *rootdlist; /* display list for all cells */
vec2 portalmin, portalmax; /* XY bbox used by upCheckCells */
float near, far; /* near, far clipping planes */
FMatrix viewmat; /* viewing matrix (world->eye) */
FMatrix projmat; /* proj matrix (eye->screen) */
FMatrix compmat; /* view * proj (world->screen) */
int portaldepth; /* depth of the portal stack */
int framecount; /* current frame number */
} upLocateData;
/*
* Functions:
*/
extern void upInit(); /* generated automatically by flt2walk */
extern Gfx *upAddVisibleCells(Gfx * glistp, vec3 eyept);
extern void upTogglePortalBounds();
extern void upToggleScissorBox();
/*
* Globals:
*/
extern upLocateData upLocator; /* also extern by test_portals.h */
/*
* Macros:
*/
#define UP_HUGEVAL 3.40282347e+37
#define PT_IN_BOX(p,box) ((p)[0] > (box).min[0] && (p)[0] < (box).max[0] &&\
(p)[1] > (box).min[1] && (p)[1] < (box).max[1] &&\
(p)[2] > (box).min[2] && (p)[2] < (box).max[2])
#ifdef __Cplusplus
}
#endif
#endif
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