geom3d[randpoint] - generate a random point in a given range, on a line, a plane, or a sphere
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Calling Sequence
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randpoint(w, x, y, z)
randpoint(w, obj, ...)
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Parameters
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w
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the name of a random point
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x
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-
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range
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y
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-
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range
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z
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-
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range
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obj
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line, plane, or sphere
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Description
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The routine geom3d[randpoint](w, x, y, z) returns a point with the x-coordinate, y-coordinate, and z-coordinate in the interval specified by x, y, and z respectively.
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When the second argument is a line, a plane, or a sphere, geom3d[randpoint] returns a point on that geometric object.
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If the object obj is a line, and the third optional argument which is a range is given, w is a point of the line segment such that the parameter in the parametric equation of the line lies in that range.
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If the object obj is a sphere, and the optional third, fourth arguments which are ranges are given, w is in general the point with the x-coordinate and y-coordinate restricted inside these ranges.
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Examples
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