| /* |
| ** 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. |
| */ |
| |
| /* |
| * flist.c++ |
| * |
| * $Date: 2012/03/29 17:22:17 $ $Revision: 1.1.1.1 $ |
| * $Header: /cvs/bao-parsec/pkgs/libs/mesa/src/src/glu/sgi/libnurbs/internals/flist.cc,v 1.1.1.1 2012/03/29 17:22:17 uid42307 Exp $ |
| */ |
| |
| #include "glimports.h" |
| #include "myassert.h" |
| #include "mystdio.h" |
| #include "flist.h" |
| |
| /*---------------------------------------------------------------------------- |
| * Flist::Flist - initialize a REAL number array |
| *---------------------------------------------------------------------------- |
| */ |
| Flist::Flist( void ) |
| { |
| npts = 0; |
| pts = 0; |
| start = end = 0; |
| } |
| |
| /*---------------------------------------------------------------------------- |
| * Flist::~Flist - free a REAL number array |
| *---------------------------------------------------------------------------- |
| */ |
| Flist::~Flist( void ) |
| { |
| if( npts ) delete[] pts; |
| } |
| |
| void |
| Flist::add( REAL x ) |
| { |
| pts[end++] = x; |
| assert( end <= npts ); |
| } |
| |
| /*---------------------------------------------------------------------------- |
| * Flist::filter - remove duplicate numbers from array |
| *---------------------------------------------------------------------------- |
| */ |
| void Flist::filter( void ) |
| { |
| sorter.qsort( pts, end ); |
| start = 0; |
| |
| int j = 0; |
| for( int i = 1; i < end; i++ ) { |
| if( pts[i] == pts[i-j-1] ) |
| j++; |
| pts[i-j] = pts[i]; |
| } |
| end -= j; |
| } |
| |
| /*---------------------------------------------------------------------------- |
| * Flist::grow - ensure that array is large enough |
| *---------------------------------------------------------------------------- |
| */ |
| void Flist::grow( int maxpts ) |
| { |
| if( npts < maxpts ) { |
| if( npts ) delete[] pts; |
| npts = 2 * maxpts; |
| pts = new REAL[npts]; |
| assert( pts != 0 ); |
| } |
| start = end = 0; |
| } |
| |
| /*---------------------------------------------------------------------------- |
| * Flist::taper - ignore head and tail of array |
| *---------------------------------------------------------------------------- |
| */ |
| void Flist::taper( REAL from, REAL to ) |
| { |
| while( pts[start] != from ) |
| start++; |
| |
| while( pts[end-1] != to ) |
| end--; |
| } |
| |
| |