public class Arthromorph extends SimpleMorph implements java.lang.Cloneable
Arthromorphs by Richard Dawkins and Ted Kaehler
Ted's initial version: 25 Nov 90
Current version: 8 Dec 90
Since we both are confused by handles and pointers in Pascal, this does not use any of either!
There is a Record called Atom that holds a little part of an animal. It has fields for a Height, a Width, and an Angle.
Remember that the true Joint length is the multiplication of all the factors: The Animal's joint length, this Section's joint length, this Segment's joint length, and the Joint's own joint length. Thus a Segment actually has three parts: its factor for Segment size, its factor for Joint size, and its factor for Claw size. Each of these are Atoms. Thus a Segment has three Atoms. They are distinguished by having different kinds: SegmentTrunk, SegmentJoint, and SegmentClaw.
An Animal-record also has three Atoms in it AnimalTrunk, AnimalJoint, and AnimalClaw.
How are Atoms hooked together? Here is a sample Animal. Each line is an Atom, but I don't show the values inside it, like Height: 20 Width: 30, etc.
AnimalTrunk
AnimalJoint
AnimalClaw
SectionTrunk
SectionJoint
SectionClaw
SegmentTrunk
SegmentJoint
SegmentClaw
Joint
Joint
Joint
Claw
SegmentTrunk
SegmentJoint
SegmentClaw
Joint
Joint
Joint
Claw
A Section sets the tone for all segments within it: Head, Thorax, Abdomen are sections
In the above set of Atoms, there are two fields for connecting Atoms together.
Look at the diagram above. When an atom points to another with NextLikeMe, they have the same level of indentation. When an atom points to another with FirstBelowMe, the atom is indented one more level.
The first SegmentTrunk points way down to the second SegmentTrunk with NextLikeMe.
The Joints point to the next with NextLikeMe. However, the AnimalClaw points to SegmentTrunk using FirstBelowMe. Note that the three atoms that make up an Animal are split. AnimalJoint is pointed to with FirstBelowMe even though it is part of the animal description. I had to do this so that AnimalTrunk could use its NextLikeMe to point at the next animal. Likewise with Segments.
All atoms are stored in a big Array called the BoneYard. You find an atom by knowing its index (the integer that is its place in the array). The two "pointers" NextLikeMe and FirstBelowMe are not pointers at all, but simply integers.
An individual Animal can have its atoms spread out all over the BoneYard, but each atom in it holds the index of the next atom in it. Thus we can walk down the parts of an animal very easily. Atoms that are not being used are labelled Free.
| Constructor and Description |
|---|
Arthromorph() |
addPropertyChangeListener, firePropertyChange, genomeChange, genomicallyEquals, getEmbryology, getGenome, getImage, getMorphAndChildren, getName, getPedigree, getPhenotype, getPhenotypeDrawer, kill, removePropertyChangeListener, setEmbryology, setGenome, setImage, setName, setPhenotype, setPhenotypeDrawer, toString