/*
*
*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.perseus.model;
/**
* @version $Id: StringRefValues.java,v 1.2 2006/04/21 06:38:51 st125089 Exp $
*/
public class StringRefValues implements RefValues {
/**
* The RefValues StringSegments
*/
StringSegment[] segments;
/**
* Used to store the length of this RefValues
*/
float[] length;
/**
* @param i requested segment index.
* @return Segment at index i
*/
public Segment getSegment(int i) {
return segments[i];
}
/**
* @return the number of segments in refValues
*/
public int getSegments() {
return segments.length;
}
/**
* StringRefValues only have one component.
*
* @return the number of string components
*/
public int getComponents() {
return segments[0].start.length;
}
/**
* Computes the value for the input interpolated values.
* There should be as many entries in the return array as there
* are components in the RefValues.
*
* @param si the current segment index
* @param p the current penetration
* @param the interpolated value.
*/
public Object[] compute(int si, float p) {
return segments[si].compute(p);
}
/**
* Adds a new time segment so accomodate for discreet behavior.
* If there is only one segment for discreet animations, the
* last value is never shown. To accomodate for that, this
* method should add a segment to the RefValues so that the
* last animation value is shown during the last value interval
* of a discreet animation.
*/
public void makeDiscrete() {
StringSegment[] tmpSegments = new StringSegment[segments.length + 1];
System.arraycopy(segments, 0, tmpSegments, 0, segments.length);
StringSegment lastSeg = segments[segments.length - 1];
StringSegment newSeg = new StringSegment();
newSeg.start = lastSeg.end;
newSeg.end = lastSeg.end;
tmpSegments[tmpSegments.length - 1] = newSeg;
segments = tmpSegments;
}
/**
* Computes the length of the RefValues. This is meant for paced timing
* computation.
*
* @return the length between the various ref values. For strings, we
* consider that each segment is of length 1, so this simply
* returns the number of segments.
*/
public float getLength() {
return segments.length;
}
/**
* Computes the length of segment at index si.
*
* @param si the segment index.
*/
public float getLength(final int si) {
// The length of a StringSegment is _always_ 1.
return 1;
}
/**
* Debug helper.
*/
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append("StringRefValues[" + getSegments() + "]\n");
for (int si = 0; si < getSegments(); si++) {
Segment seg = getSegment(si);
sb.append("seg[" + si + "] : " + seg.toString() + "\n");
}
return sb.toString();
}
/**
* Should be called after the RefValue's configuration is complete
* to give the implementation a chance to initialize
* internal data and cache values.
*/
public void initialize() {
// Initialize segments.
final int ns = segments.length;
// Initialize length cache
length = new float[segments[0].start.length];
// The length of a StringSegment is 1, in all cases.
for (int ci = 0; ci < length.length; ci++) {
length[ci] = segments.length;
}
}
}
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