Category: Linear Algebra

Where in the curve is the point?

Assuming there are two closed curves, one of them is created by points on a counter-clockwise direction, while the other one is created on a clockwise direction. Let this clockwise curve be a hole inside the counter-clockwise curve. Suppose we have a point place elsewhere in the graph along...
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Arccosine versus Arctangent for Vectors

In my previous programming years, when determining the angle given three right sides of a right triangle, I always use arctangent (Math.Atan or Math.Atan2 in .NET). Arctangent is always available for me especially when the length of the hypotenuse of a right triangle is not given. Until I came...
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