Summary: How to generate random numbers that fall within a specified range.
The following code sample demonstrates how to generate random integers that fall within a specified range.
First, the standard VBScript method:
Sub Test1() nLow = 1 nHigh = 100 Randomize Rhino.Print Int((nHigh - nLow + 1) * Rnd + nLow) End Sub
Note, since the Int function always rounds down, we add one to the difference between the limits.
Now, a little help from the .NET Framework:
Sub Test2() nLow = 1 nHigh = 100 Set objRandom = CreateObject("System.Random") Rhino.Print objRandom.Next_2(nLow, nHigh) End Sub
If you want a random floating point number that falls within a specified range, you can use the technique below.
Sub Test3() dblLow = 10.0 dblHigh = 50.0 Randomize Rhino.Print Rnd * (dblHigh - dblLow) + dblLow End Sub