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/*
* viewing.h
*
* Copyright (C) 1989, 1991, Craig E. Kolb
* All rights reserved.
*
* This software may be freely copied, modified, and redistributed
* provided that this copyright notice is preserved on all copies.
*
* You may not distribute this software, in whole or in part, as part of
* any commercial product without the express consent of the authors.
*
* There is no warranty or other guarantee of fitness of this software
* for any purpose. It is provided solely "as is".
*
* $Id$
*
* $Log$
*/
#ifndef VIEWING_H
#define VIEWING_H
/*
* Screen
*/
typedef struct {
int xres, yres, /* Resolution of entire screen */
xsize, ysize, /* Resolution of window */
minx, miny, maxx, maxy; /* Window to be rendered */
Vector scrnx, scrny, /* Horizontal & vertical screen axes */
scrni, scrnj, /* Normalized versions of the above */
firstray; /* Direction from eye to screen UL */
Color background; /* Background color */
} RSScreen;
/*
* Camera
*/
typedef struct {
Vector pos, /* Eye position */
lookp, /* Look position */
dir, /* Look direction */
up; /* 'Up' vector */
Float hfov, vfov, /* Horizontal/vertical field of view */
lookdist, /* Eye pos/look pos distance */
aperture, /* Aperture width (0 == pinhole) */
focaldist; /* Distance from eye to focal plane */
} RSCamera;
extern RSScreen Screen;
extern RSCamera Camera;
#endif /* VIEWING_H */
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