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- /*
- * Copyright (C) 1991, 1992, 1993, 1994, 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- * This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;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 Unpublished -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.
- */
- /* stereopersp.c */
-
- #include <malloc.h>
- #include <math.h>
-
- #include "stereo.h"
-
- void stereopersp(int fovy, float aspect,
- float near, float far, float conv, float eye)
- {
- float left, right, top, bottom;
- float gltan;
-
- gltan = tan(fovy/2.0/10.0*M_PI/180.0);
-
- top = gltan * near;
-
- bottom = -top;
-
- gltan = tan(fovy*aspect/2.0/10.0*M_PI/180.0);
-
- left = -gltan*near - eye/conv*near;
- right = gltan*near - eye/conv*near;
-
- window(left, right, bottom, top, near, far);
-
- translate(-eye, 0.0, 0.0);
- }
-
-