/**
* 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.geometry;
import java.util.ArrayList;
import java.util.List;
import ca.eandb.jmist.framework.AffineTransformable3;
import ca.eandb.jmist.framework.BoundingBoxBuilder3;
import ca.eandb.jmist.framework.SceneElement;
import ca.eandb.jmist.framework.Intersection;
import ca.eandb.jmist.framework.IntersectionDecorator;
import ca.eandb.jmist.framework.IntersectionRecorder;
import ca.eandb.jmist.framework.IntersectionRecorderDecorator;
import ca.eandb.jmist.framework.InvertibleAffineTransformation3;
import ca.eandb.jmist.framework.ShadingContext;
import ca.eandb.jmist.math.AffineMatrix3;
import ca.eandb.jmist.math.Basis3;
import ca.eandb.jmist.math.Box3;
import ca.eandb.jmist.math.LinearMatrix3;
import ca.eandb.jmist.math.Point3;
import ca.eandb.jmist.math.Ray3;
import ca.eandb.jmist.math.Sphere;
import ca.eandb.jmist.math.Vector3;
/**
* A <code>CompositeGeometry</code> that may be transformed.
* @author Brad Kimmel
*/
public final class TransformableGeometry extends AbstractGeometry implements
AffineTransformable3 {
/**
* Serialization version ID.
*/
private static final long serialVersionUID = -1312285205292950959L;
/**
* Creates a new <code>TransformableGeometry</code>.
* @param geometry The <code>SceneElement</code> to make transformable.
*/
public TransformableGeometry(SceneElement geometry) {
this.geometry = geometry;
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.SceneElement#intersect(int, ca.eandb.jmist.math.Ray3, ca.eandb.jmist.framework.IntersectionRecorder)
*/
public void intersect(int index, Ray3 ray, IntersectionRecorder recorder) {
ray = this.model.applyInverse(ray);
recorder = new TransformedIntersectionRecorder(recorder);
geometry.intersect(index, ray, recorder);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.geometry.AbstractGeometry#intersect(ca.eandb.jmist.math.Ray3, ca.eandb.jmist.framework.IntersectionRecorder)
*/
@Override
public void intersect(Ray3 ray, IntersectionRecorder recorder) {
ray = this.model.applyInverse(ray);
recorder = new TransformedIntersectionRecorder(recorder);
geometry.intersect(ray, recorder);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Bounded3#boundingBox()
*/
public Box3 boundingBox() {
BoundingBoxBuilder3 builder = new BoundingBoxBuilder3();
Box3 childBoundingBox = geometry.boundingBox();
for (int i = 0; i < 8; i++) {
builder.add(this.model.apply(childBoundingBox.corner(i)));
}
return builder.getBoundingBox();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Bounded3#boundingSphere()
*/
public Sphere boundingSphere() {
List<Point3> corners = new ArrayList<Point3>(8);
Box3 childBoundingBox = geometry.boundingBox();
for (int i = 0; i < 8; i++) {
corners.add(this.model.apply(childBoundingBox.corner(i)));
}
return Sphere.smallestContaining(corners);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.SceneElement#getBoundingBox(int)
*/
public Box3 getBoundingBox(int index) {
BoundingBoxBuilder3 builder = new BoundingBoxBuilder3();
Box3 childBoundingBox = geometry.getBoundingBox(index);
for (int i = 0; i < 8; i++) {
builder.add(this.model.apply(childBoundingBox.corner(i)));
}
return builder.getBoundingBox();
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.SceneElement#getBoundingSphere(int)
*/
public Sphere getBoundingSphere(int index) {
List<Point3> corners = new ArrayList<Point3>(8);
Box3 childBoundingBox = geometry.getBoundingBox(index);
for (int i = 0; i < 8; i++) {
corners.add(this.model.apply(childBoundingBox.corner(i)));
}
return Sphere.smallestContaining(corners);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.SceneElement#getNumPrimitives()
*/
public int getNumPrimitives() {
return geometry.getNumPrimitives();
}
/**
* An <code>IntersectionRecorder</code> that transforms the recorded
* intersections according to the transformation for this
* <code>TransformableGeometry</code>.
* @author Brad Kimmel
*/
private final class TransformedIntersectionRecorder extends
IntersectionRecorderDecorator {
/**
* Creates a new <code>TransformedIntersectionRecorder</code>.
* @param inner The <code>IntersectionRecorder</code> to record
* intersections to.
*/
public TransformedIntersectionRecorder(IntersectionRecorder inner) {
super(inner);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.IntersectionRecorderDecorator#record(ca.eandb.jmist.framework.Intersection)
*/
@Override
public void record(Intersection intersection) {
this.inner.record(new TransformedIntersection(intersection));
}
}
/**
* An <code>Intersection</code> that has been transformed according to the
* transformation applied to this <code>TransformableGeometry</code>.
* @author Brad Kimmel
*/
private final class TransformedIntersection extends IntersectionDecorator {
/**
* Creates a new <code>TransformedIntersection</code>.
* @param local The <code>Intersection</code> in local coordinate
* space.
*/
public TransformedIntersection(Intersection local) {
super(local);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.IntersectionDecorator#transformShadingContext(ca.eandb.jmist.framework.ShadingContext)
*/
@Override
protected void transformShadingContext(ShadingContext context) {
context.setPosition(model.apply(context.getPosition()));
context.setBasis(transformBasis(context.getBasis()));
context.setShadingBasis(transformBasis(context.getShadingBasis()));
}
private Basis3 transformBasis(Basis3 basis) {
return Basis3.fromUV(
model.apply(basis.u()),
model.apply(basis.v()),
basis.orientation());
}
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.AffineTransformable3#transform(ca.eandb.jmist.toolkit.AffineMatrix3)
*/
public void transform(AffineMatrix3 T) {
this.model.transform(T);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.LinearTransformable3#transform(ca.eandb.jmist.toolkit.LinearMatrix3)
*/
public void transform(LinearMatrix3 T) {
this.model.transform(T);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Rotatable3#rotate(ca.eandb.jmist.toolkit.Vector3, double)
*/
public void rotate(Vector3 axis, double angle) {
this.model.rotate(axis, angle);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Rotatable3#rotateX(double)
*/
public void rotateX(double angle) {
this.model.rotateX(angle);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Rotatable3#rotateY(double)
*/
public void rotateY(double angle) {
this.model.rotateY(angle);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Rotatable3#rotateZ(double)
*/
public void rotateZ(double angle) {
this.model.rotateZ(angle);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Translatable3#translate(ca.eandb.jmist.toolkit.Vector3)
*/
public void translate(Vector3 v) {
this.model.translate(v);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Scalable#scale(double)
*/
public void scale(double c) {
this.model.scale(c);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.Stretchable3#stretch(ca.eandb.jmist.toolkit.Vector3, double)
*/
public void stretch(Vector3 axis, double c) {
this.model.stretch(axis, c);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.AxisStretchable3#stretch(double, double, double)
*/
public void stretch(double cx, double cy, double cz) {
this.model.stretch(cx, cy, cz);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.AxisStretchable3#stretchX(double)
*/
public void stretchX(double cx) {
this.model.stretchX(cx);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.AxisStretchable3#stretchY(double)
*/
public void stretchY(double cy) {
this.model.stretchY(cy);
}
/* (non-Javadoc)
* @see ca.eandb.jmist.framework.AxisStretchable3#stretchZ(double)
*/
public void stretchZ(double cz) {
this.model.stretchZ(cz);
}
/** The <code>SceneElement</code> to be made transformable. */
private final SceneElement geometry;
/** The transformation to apply to this <code>SceneElement</code>. */
private final InvertibleAffineTransformation3 model = new InvertibleAffineTransformation3();
}