1 MINUTE VEX X

Weighted Integer Sampling

In this example, we use the sample_discrete function to make a weighted selection from an array. Because sample_discrete only works with values in a 0-1 range,  we begin by finding the position of our point relative to the input bounding box, using relbbox and @P.

However, because these values are uniformly sampled, we can introduce a filtered/dithered effect on positions by interpolating our relative position with a random 0-1 float. Using lerp and rand, we can introduce and adjust this effect.

Once we have built an array with the desired weight values (in this case a series of parameters), we can use sample_discrete to return an integer between 0 (the first item in the list) and 2 (the last item in the list) at the selected u value.

Using this value, we can use it to drive a variety of different useful functions, such as choosing a colour from another, equally sized array; Or assigning the name of a new point group by converting the value to a string (with the itoa function).