Modeling and Modifying a 3D Arrow

[Jeff]

For the bending and twisting of the model you would need to create a Cal3D model with various morph targets that you could animate between. See the following article for some information on this:

http://kb.worldviz.com/articles/1233

Scaling could be done either within the morph targets of the Cal3D model or using the <vizact>.sizeTo command.