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/**
* Ray.java
*
* Copyright (c) 2013-2016, F(X)yz
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions 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 F(X)yz, any associated website, nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL F(X)yz BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.fxyz3d.geometry;
import javafx.geometry.Point3D;
/**
* Simple Ray class.
* Allowing for a variety of performance and productivity enhancements.
* Following up on Jose Pereda's RayTest intersection example in the Tests package
*
* @author Jason Pollastrini aka jdub1581
*/
public class Ray {
private Point3D direction, origin, position;
private Ray() {
}
/**
* Constructs a Ray with origin and direction
* @param orig the origin point of the Ray
* @param dir direction of the Ray
*/
public Ray(Point3D orig, Point3D dir) {
this.origin = orig;
this.direction = dir;
}
/**
*
* @return origin of the Ray
*/
public Point3D getOrigin() {
return origin;
}
private void setOrigin(Point3D origin) {
this.origin = origin;
}
/**
*
* @return Position of the Ray If projection has not been performed returns origin;
*/
public Point3D getPosition() {
return position != null ? position : origin;
}
private void setPosition(Point3D position) {
this.position = position;
}
/**
*
* @return direction of the Ray
*/
public Point3D getDirection() {
return direction;
}
private void setDirection(Point3D direction) {
this.direction = direction;
}
/*
Methods
*/
/**
* Projects the Ray from origin along direction by distance
* @param distance
* @return projected position
*/
public Point3D project(double distance){
setPosition(getOrigin().add((getDirection().normalize().multiply(distance))));
return getPosition();
}
/**
* Projects the Ray from new origin along direction by distance
* using the original direction.
* Useful for objects moving in a constant direction.
* @param orig the new origin point
* @param dist distance to project ray
* @return sets origin and returns projected position
*/
public Point3D reProject(Point3D orig, double dist){
setOrigin(orig);
setPosition(getOrigin().add((getDirection().normalize().multiply(dist))));
return getPosition();
}
/**
* Projects the Ray from new origin along direction by distance
* @param orig the new origin point
* @param dir the new direction of travel
* @param dist distance to project ray
* @return sets origin and returns projected position
*/
public Point3D setProject(Point3D orig, Point3D dir, double dist){
setOrigin(orig);
setDirection(dir);
setPosition(getOrigin().add((getDirection().normalize().multiply(dist))));
return getPosition();
}
/*==========================================================================
TO DO: Consider adding Intersection methods for:
~ node.boundsInParent
*with check for meshView
~ TriangleMesh triangles.
*performance can potentially be increased by implementing a
BVT (bounding volume tree), or an OctTree hierarchy
possibly reducing the number of triangle intersection checks.
*///========================================================================
@Override
public String toString() {
return "Ray ::\n" + " origin = " + origin + ",\n direction = " + direction + ",\n position = " + position + "\n";
}
}
