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Updated Scale (markdown)

bi0qaw 2017-11-25 16:42:46 +01:00
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Scale.md

@ -15,5 +15,23 @@ Scales a list of locations or vectors by a number.
***
## Effect of direction vector on scaling
With scaling factor = 1
Scaling|Direction Vector
---|---
all points move to the center|0, 0, 0
no scaling|1, 1, 1
scaling by a factor of 2|2, 2, 2
scaling by a factor of 2 in the x-direction|2, 1, 1
scaling by a factor of 2 in the y-direction|1, 2, 1
scaling by a factor of 2 in the z-direction|1, 1, 2
shrinking by a factor of 2|1/2, 1/2, 1/2
shrinking by a factor of 3|1/3, 1/3, 1/3
scaling by a factor of a, b, c in the x-, y- and z-direction|a, b, c
Note that the scaling factor just multiplies all the scalings applied by the direction vector. Using a scaling factor of 2 and a direction vector of 1, 2, 3 is the same as using a scaling factor of 1 and a direction vector 2, 4, 8.
***