Question: Animation of train/hiker/tramper on a mountain. Colors, overlapping concerns?


The attached program is of a point moving along a conical path of a cone, then doing a descent back to the start.   For values R=60, r=20, h=10 the animation seems to work reasonably well.  However when r=19 - only a small change - the development plot of the cone is only partially shown?   Also, I have some variables nameP1, nameP2 which I would like to alter the color of.  Howdo I do this?

  Any comments or help most appreciated. 

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