Class v_Swirl_vv


public class v_Swirl_vv
extends NodeVec2

Generate a vector that swirls to one side or the other of a detected hazard. One embedded node provides a hazard to avoid, the other points in the reference direction (typically a goal location).

The "swirl" behavior was originally developed by Andy Henshaw and Tom Collins at the Georgia Tech Research Institute. It is also similar to Marc Slack's NATs.

For detailed information on how to configure behaviors, see the Clay page.

Copyright (c)1997, 1998 Tucker Balch

Field Summary
static boolean DEBUG
          Turn debug printing on or off.
Fields inherited from class
DEBUG, embedded_nodes
Constructor Summary
v_Swirl_vv(double soe, double s, NodeVec2 im1, NodeVec2 im2)
          Instantiate a v_Swirl_vv schema.
Method Summary
 Vec2 Value(long timestamp)
          Return a Vec2 representing the direction to go.
Methods inherited from class
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail


public static final boolean DEBUG
Turn debug printing on or off.
Constructor Detail


public v_Swirl_vv(double soe,
                  double s,
                  NodeVec2 im1,
                  NodeVec2 im2)
Instantiate a v_Swirl_vv schema.
soe - double, the sphere of influence beyond which the hazards are not considered.
s - double, the safety zone, inside of which a maximum repulsion from the object is generated.
im1 - double, the embedded perceptual schema that generates an item to avoid.
im2 - double, the embedded perceptual schema that generates a pointer to the goal (must be egocentric).
Method Detail


public Vec2 Value(long timestamp)
Return a Vec2 representing the direction to go.
Value in class NodeVec2
timestamp - long, only get new information if timestamp > than last call or timestamp == -1.
the movement vector.