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/*
* Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package demos.xtrans;
import gleem.linalg.*;
/** A quadrilateral of two-dimensional floating-point values which
* interpolates between specified start and end values.
*
* @author Kenneth Russell
*/
public class InterpolatedQuad2f {
private Quad2f start;
private Quad2f end;
/** Constructs a new InterpolatedQuad2f. By default both the start
and end quadrilaterals have all of their points set to the
origin. */
public InterpolatedQuad2f() {
start = new Quad2f();
end = new Quad2f();
}
/** Returns the starting value for the interpolation. */
public Quad2f getStart() {
return start;
}
/** Sets the starting value for the interpolation. */
public void setStart(Quad2f quad) {
start.set(quad);
}
/** Returns the ending value for the interpolation. */
public Quad2f getEnd() {
return end;
}
/** Sets the ending value for the interpolation. */
public void setEnd(Quad2f quad) {
end.set(quad);
}
/** Gets the current interpolated value at the specified fraction of
interpolation (0.0 - 1.0). */
public Quad2f getCurrent(float fraction) {
return start.times(1.0f - fraction).plus(end.times(fraction));
}
}
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