Tweening Toxiclibs Vec3D with ijeomamotion using the IProperty interface

Tween_Vec3D.pde

import ijeoma.motion.Motion;
import ijeoma.motion.tween.Tween;

import toxi.geom.Vec3D;

Tween t;
PFont f;

Vec3D v1, v2;

public void setup() {
  size(400, 400);
  smooth();

  rectMode(CENTER);

  f = createFont("Arial", 12);

  v1 = new Vec3D(0, 0, 0);
  v2 = new Vec3D(0, 0, 0);

  Motion.setup(this);

  t = new Tween(100)
    .add(new Vec3DProperty(this, "v1", new Vec3D(width, height, 0)))
      .add(new Vec3DProperty(this, "v2", new Vec3D(width / 2, 
      height / 2, 0))).play();
}

public void draw() {
  background(255);

  noStroke();
  fill(0);
  rect(width / 2, height / 2, v1.x, v1.y);
  fill(255, 0, 0);
  rect(width / 2, height / 2, v2.x, v2.y);

  fill(0);
  String time = t.getTime() + " / " + t.getDuration();
  text(time, width - textWidth(time) - 10, height - 10);
}

public void keyPressed() {
  t.play();
}

Vec3DProperty.java

  import ijeoma.motion.tween.IProperty;
  
  import java.lang.reflect.Field;
  
  import toxi.geom.Vec3D;
  
  public class Vec3DProperty implements IProperty {
    protected Object object;
  	protected Class<? extends Object> objectType;
  	protected Field field;
  	protected Class<?> fieldType;
  
  	String name = "";
  
  	protected Vec3D begin, end, change;
  	protected float position;
  
  	protected Vec3D value = new Vec3D();
  
  	protected int order = 0;
  
  	public Vec3DProperty() {
  
  	}
  
  	public Vec3DProperty(Object object, String name, Vec3D end) {
  		setupObject(object, name);
  		setup(name, end);
  	}
  
  	public Vec3DProperty(Object object, String name, Vec3D begin, Vec3D end) {
  		setupObject(object, name);
  		setup(name, begin, end);
  	}
  
  	public Vec3DProperty(String name, Vec3D begin, Vec3D end) {
  		setup(name, begin, end);
  	}
  
  	private void setup(String name, Vec3D end) {
  		this.name = name;
  
  		setEnd(end);
  
  		position = 0;
  	}
  
  	private void setup(String name, Vec3D begin, Vec3D end) {
  		this.name = name;
  
  		setEnd(end);
  		setBegin(begin);
  
  		position = 0;
  	}
  
  	private void setupObject(Object propertyObject, String propertyName) {
  		object = propertyObject;
  		objectType = object.getClass();
  
  		boolean found = false;
  
  		while (objectType != null) {
  			for (Field f : objectType.getDeclaredFields())
  				if (f.getName().equals(propertyName)) {
  					fieldType = f.getType();
  					found = true;
  					break;
  				}
  
  			if (found)
  				break;
  			else
  				objectType = objectType.getSuperclass();
  		}
  
  		if (found)
  			try {
  				field = objectType.getDeclaredField(propertyName);
  
  				try {
  					field.setAccessible(true);
  				} catch (java.security.AccessControlException e) {
  					e.printStackTrace();
  				}
  			} catch (NoSuchFieldException e) {
  				e.printStackTrace();
  			}
  	}
  
  	public void updateValue() { 
  		if ((position > 0 && position <= 1) || (position == 0 && order == 0)) { 
  			value = begin.interpolateTo(end, position);
  
  			if (field != null)
  				try {
  					((Vec3D) field.get(object)).set(value); 
  				} catch (IllegalArgumentException e) {
  					e.printStackTrace();
  				} catch (IllegalAccessException e) { 
  					e.printStackTrace();
  				}
  		}
  	}
  
  	@Override
  	public String getName() {
  		return name;
  	}
  
  	@Override
  	public void setName(String _name) {
  		name = _name;
  	}
  
  	public Vec3D getBegin() {
  		return begin;
  	}
  
  	public void setBegin() {
  		try {
  			begin = ((Vec3D) field.get(object)).copy();
  			change = end.sub(begin).copy();
  		} catch (IllegalArgumentException e) {
  			e.printStackTrace();
  		} catch (IllegalAccessException e) {
  			e.printStackTrace();
  		}
  	}
  
  	public void setBegin(Object begin) {
  		this.begin = (Vec3D) begin;
  		change = end.sub(this.begin).copy();
  	}
  
  	public Vec3D getEnd() {
  		return end;
  	}
  
  	public void setEnd(Object end) {
  		if (field != null) {
  			try {
  				begin = ((Vec3D) field.get(object)).copy();
  			} catch (IllegalArgumentException e) {
  				e.printStackTrace();
  			} catch (IllegalAccessException e) {
  				e.printStackTrace();
  			}
  		} else
  			begin = value;
  
  		this.end = (Vec3D) end;
  		change = this.end.sub(begin).copy();
  	}
  
  	public Vec3D getChange() {
  		return change;
  	}
  
  	public void setChange(Object _change) {
  		change = (Vec3D) _change;
  	}
  
  	public Float getPosition() {
  		return position;
  	}
  
  	@Override
  	public void setPosition(Object _position) {
  		position = (Float) _position;
  
  		updateValue();
  	}
  
  	public Vec3D getValue() {
  		if (field != null) {
  			try {
  				return ((Vec3D) field.get(object)).copy();
  			} catch (IllegalArgumentException e) {
  				e.printStackTrace();
  				return null;
  			} catch (IllegalAccessException e) {
  				e.printStackTrace();
  				return null;
  			}
  		} else
  			return value;
  	}
  
  	public Object getObject() {
  		return object;
  	}
  
  	public void setOrder(int index) {
  		order = index;
  	}
  
  	public int getOrder() {
  		return order;
  	}
  
  	@Override
  	public String toString() {
  		return "NumberParameter[name: " + name + ", begin: " + begin
  				+ ", end: " + end + ", change: " + change + ", position: "
  				+ position + "]";
  	}
  }