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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.
*/
/*
* flist.c++
*
*/
#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--;
}
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