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CHAPTER 4. DESIGN AND IMPLEMENTATION
(a) Graph of Body Shape
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(b) Hawk Fish
Figure 4.1: Body Shape for the Hawk fish
(a) Angel Fish
Figure 4.2: Body Shape for the Angel fish
which implements a sine curve. We elected to use this function as it approximates the body
shape of a large number of fish.
There are many different types of fish body shapes and we want to allow the VRFish to be easily
extended to incorporate more of them. For example one can see the body shape for the Hawk
and Angel fish. The graph in Figure 4.1 could be used in order to get the shape for the Hawk
fish, similarly the graph in Figure 4.2 to achieve the top half of the body for the Angel fish.
One could use a cubic spline interpolation [2] to approximate the curve of the shape of the
body and to create additional subclasses of FishShapeFunction class. This would allow a wider
variety of different body shapes to be created using VRFish, within the same environment. We
feel that by implementing one, it is sufficient for proof of concept.
The user specifies two values which control the level of detail of the fish. The two values, which
we will called BodySections and CircleSections, control how many points are used in the cre-