In our project, every entity is placed on a terrain. This updating is performed by using an intersectvisitor. I have a few questions about the most optimal way to perform the elevation tests etc. Should I create a new intersect visitor each and every time I test the elevation of the terrain? If I am not mistaken, I have to add a new line segment to the intersect visitor at every place I am interested in finding the elevation and normal. Can I then remove these line segments? The problem that I am having with the current way it is implemented is that sometimes, the hitlist is coming back as empty.
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