/**
* Java Modular Image Synthesis Toolkit (JMIST)
* Copyright (C) 2008-2013 Bradley W. Kimmel
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package ca.eandb.jmist.framework.texture;
import ca.eandb.jmist.framework.Texture2;
import ca.eandb.jmist.framework.Texture3;
import ca.eandb.jmist.framework.color.Color;
import ca.eandb.jmist.framework.color.WavelengthPacket;
import ca.eandb.jmist.math.Basis3;
import ca.eandb.jmist.math.Point2;
import ca.eandb.jmist.math.Point3;
import ca.eandb.jmist.math.Vector3;
/**
* A <code>Texture2</code> that represents a slice of a <code>Texture3</code>.
* @author Brad Kimmel
*/
public final class SliceTexture2 implements Texture2 {
/** Serialization version ID. */
private static final long serialVersionUID = 8157705084047279308L;
/** The <code>Texture3</code> to slice. */
private final Texture3 source;
/**
* The <code>Point3</code> on {@link #source} that maps to the origin for
* this <code>Texture2</code>.
*/
private final Point3 origin;
/** The first basis vector for the slice. */
private final Vector3 u;
/** The second basis vector for the slice. */
private final Vector3 v;
/**
* Creates a new <code>SliceTexture2</code>.
* @param origin The <code>Point3</code> on {@link #source} that maps to
* the origin for this <code>Texture2</code>.
* @param u The first basis vector.
* @param v The second basis vector.
* @param source The <code>Texture3</code> to slice.
*/
public SliceTexture2(Point3 origin, Vector3 u, Vector3 v, Texture3 source) {
this.origin = origin;
this.u = u;
this.v = v;
this.source = source;
}
/**
* Creates a new <code>SliceTexture2</code>.
* @param origin The <code>Point3</code> on {@link #source} that maps to
* the origin for this <code>Texture2</code>.
* @param basis The <code>Basis3</code> describing the orientation of the
* slice.
* @param source The <code>Texture3</code> to slice.
*/
public SliceTexture2(Point3 origin, Basis3 basis, Texture3 source) {
this(origin, basis.u(), basis.v(), source);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Texture2#evaluate(ca.eandb.jmist.math.Point2, ca.eandb.jmist.framework.color.WavelengthPacket)
*/
@Override
public Color evaluate(Point2 p, WavelengthPacket lambda) {
Point3 q = origin.plus(u.times(p.x())).plus(v.times(p.y()));
return source.evaluate(q, lambda);
}
}