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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: viewing.h,v 4.0 91/07/17 14:48:26 kolb Exp Locker: kolb $
- *
- * $Log: viewing.h,v $
- * Revision 4.0 91/07/17 14:48:26 kolb
- * Initial version.
- *
- */
- #ifndef VIEWING_H
- #define VIEWING_H
-
- /*
- * Screen
- */
- typedef struct RSScreen {
- 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 */
-