SGI SI GLU library

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diff --git a/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h b/src/glu/sgi/libnurbs/nurbtess/primitiveStream.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.
+**
+** $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $
+*/
+/*
+** $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/nurbtess/primitiveStream.h,v 1.1 2001/03/17 00:25:41 brianp Exp $
+*/
+
+/*we do not use the constans GL_... so that this file is independent of 
+ *<GL/gl.h>
+ */
+
+#ifndef _PRIMITIVE_STREAM_H
+#define _PRIMITIVE_STREAM_H
+
+enum {PRIMITIVE_STREAM_FAN, PRIMITIVE_STREAM_STRIP};
+
+#include "definitions.h"
+
+class primStream {
+  Int *lengths; /*length[i]=number of vertices of ith primitive*/
+  Int *types; /*each primive has a type: FAN or STREAM*/
+  Real *vertices; /*the size >= 2 * num_vertices, each vertex (u,v)*/
+
+  /*the following size information are used for dynamic arrays*/
+  Int index_lengths; /*the current available entry*/
+  Int size_lengths; /*the allocated size of the array: lengths*/
+  Int index_vertices;
+  Int size_vertices;
+
+  /*the vertex is inserted one by one. counter is used to 
+   *count the number of vertices which have been inserted so far in 
+   *the current primitive
+   */
+  Int counter;
+
+public:  
+  primStream(Int sizeLengths, Int sizeVertices);
+  ~primStream();
+
+  Int get_n_prims() //num of primitives
+    {
+      return index_lengths;
+    }
+  Int get_type(Int i)  //the type of ith primitive
+    {
+      return  types[i];
+    }
+  Int get_length(Int i) //the length of the ith primitive
+    {
+      return lengths[i];
+    }
+  Real* get_vertices() {return vertices;}
+
+  /*the begining of inserting a new primitive. 
+   *reset counter to be 0.
+   */
+  void begin();
+  void insert(Real u, Real v);
+  void insert(Real v[2]) {insert(v[0], v[1]);}
+  void end(Int type);
+  
+  Int num_triangles();
+  
+  void triangle(Real A[2], Real B[2], Real C[2])
+    {
+      begin();
+      insert(A);
+      insert(B);
+      insert(C);
+      end(PRIMITIVE_STREAM_FAN);
+    }
+  void print();
+  void draw(); /*using GL to draw the primitives*/
+};
+
+
+
+
+
+
+  
+
+#endif
+