SGI SI GLU library

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diff --git a/src/glu/sgi/libnurbs/internals/basicsurfeval.h b/src/glu/sgi/libnurbs/internals/basicsurfeval.h
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+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.1 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+**
+** http://oss.sgi.com/projects/FreeB
+**
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+**
+** Original Code. The Original Code is: OpenGL Sample Implementation,
+** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+** Copyright in any portions created by third parties is as indicated
+** elsewhere herein. All Rights Reserved.
+**
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+*/
+
+/*
+ * basicsurfeval.h
+ *
+ * $Date: 2001/03/17 00:25:40 $ $Revision: 1.1 $
+ * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/internals/basicsurfeval.h,v 1.1 2001/03/17 00:25:40 brianp Exp $
+ */
+
+#ifndef __glubasicsurfeval_h_
+#define __glubasicsurfeval_h_
+
+#include "types.h"
+#include "displaymode.h"
+#include "cachingeval.h"
+
+class BasicSurfaceEvaluator : public CachingEvaluator {
+public:
+    virtual void	range2f( long, REAL *, REAL * );
+    virtual void	domain2f( REAL, REAL, REAL, REAL );
+
+    virtual void	enable( long );
+    virtual void	disable( long );
+    virtual void	bgnmap2f( long );
+    virtual void	map2f( long, REAL, REAL, long, long, 
+				     REAL, REAL, long, long, 
+				     REAL *  );
+    virtual void	mapgrid2f( long, REAL, REAL, long,  REAL, REAL );
+    virtual void	mapmesh2f( long, long, long, long, long );
+    virtual void	evalcoord2f( long, REAL, REAL );
+    virtual void	evalpoint2i( long, long );
+    virtual void	endmap2f( void );
+
+    virtual void	polymode( long );
+    virtual void 	bgnline( void );
+    virtual void 	endline( void );
+    virtual void 	bgnclosedline( void );
+    virtual void 	endclosedline( void );
+    virtual void 	bgntmesh( void );
+    virtual void 	swaptmesh( void );
+    virtual void 	endtmesh( void );
+    virtual void 	bgnqstrip( void );
+    virtual void 	endqstrip( void );
+
+    virtual void 	bgntfan( void );
+    virtual void 	endtfan( void );
+
+    virtual void        evalUStrip(int n_upper, REAL v_upper, REAL* upper_val,
+				     int n_lower, REAL v_lower, REAL* lower_val
+      ) = 0;
+
+    virtual void        evalVStrip(int n_left, REAL u_left, REAL* left_val,
+				     int n_right, REAL u_right, REAL* right_val
+      ) = 0;
+    virtual void        inDoEvalCoord2NOGE(REAL u, REAL v, REAL* ret_point, REAL* ret_normal) = 0;
+    virtual void        inDoEvalCoord2NOGE_BU(REAL u, REAL v, REAL* ret_point, REAL* ret_normal) = 0;
+    virtual void        inDoEvalCoord2NOGE_BV(REAL u, REAL v, REAL* ret_point, REAL* ret_normal) = 0;
+    virtual void inPreEvaluateBV_intfac(REAL v ) = 0;
+    virtual void inPreEvaluateBU_intfac(REAL u ) = 0;
+    
+};
+
+#endif /* __glubasicsurfeval_h_ */