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package jogamp.opengl.glu.nurbs;
/*
** 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 2.0 (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.
*/
import java.util.Arrays;
/**
* List of breakpoints
* @author Tomas Hrasky
*
*/
public class Flist {
/**
* Data elements end index
*
*/
public int end;
/**
*Data elements start index
*/
public int start;
/**
* Breakpoint values
*/
public float[] pts;
/**
* Number of array fields
*/
private int npts;
/**
* Grows list
* @param maxpts maximum desired size
*/
public void grow(final int maxpts) {
// DONE
if (npts < maxpts) {
// npts=2*maxpts;
npts = maxpts;
pts = new float[npts];
}
start = 0;
end = 0;
}
/**
* Removes duplicate array elemnts
*/
public void filter() {
// INFO the aim of this method is to remove duplicates from array
Arrays.sort(pts);
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;
}
/**
* Sets start and and to real start and end of array elements
* @param from start from
* @param to end at
*/
public void taper(final float from, final float to) {
// DONE
while (pts[start] != from) {
start++;
}
while (pts[end - 1] != to) {
end--;
}
}
/**
* Adds breakpoint value
* @param f value
*/
public void add(final float f) {
//DONE
pts[end++] = f;
}
}
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