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diff --git a/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/rectBlock.h b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/rectBlock.h
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+++ b/nx-X11/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/rectBlock.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: 2004/03/14 08:29:11 $ $Revision: 1.1.1.4 $
+*/
+/*
+** $Header: /cvs/xorg/xc/extras/ogl-sample/main/gfx/lib/glu/libnurbs/nurbtess/rectBlock.h,v 1.1.1.4 2004/03/14 08:29:11 eich Exp $
+*/
+
+#ifndef _RECTBLOCK_H
+#define _RECTBLOCK_H
+
+#include "definitions.h"
+#include "gridWrap.h"
+
+class rectBlock{
+  Int upGridLineIndex;
+  Int lowGridLineIndex;
+  Int* leftIndices; //up to bottome
+  Int* rightIndices; //up to bottom
+public:
+  //the arrays are copies.
+  rectBlock(gridBoundaryChain* left, gridBoundaryChain* right, Int beginVline, Int endVline);
+  ~rectBlock(); //free the two arrays
+
+  Int get_upGridLineIndex() {return upGridLineIndex;}
+  Int get_lowGridLineIndex() {return lowGridLineIndex;}
+  Int* get_leftIndices() {return leftIndices;}
+  Int* get_rightIndices() {return rightIndices;}
+
+  Int num_quads();
+
+  void print();
+  void draw(Real* u_values, Real* v_values);
+};
+
+
+class rectBlockArray{
+  rectBlock** array;
+  Int n_elements;
+  Int size;
+public:
+  rectBlockArray(Int s);
+  ~rectBlockArray();//delete avarything including the blocks
+  
+  Int get_n_elements() {return n_elements;}
+  rectBlock* get_element(Int i) {return array[i];}
+  void insert(rectBlock* newBlock); //only take the pointer, not ther cotent
+
+  Int num_quads();
+
+  void print();
+  void draw(Real* u_values, Real* v_values);
+};
+  
+
+
+#endif
+