Propose Op contrib ArraySetValuesByIndexArray

[TobyKLight]

Description

The reverse of ArrayGetValuesByIndexArray

It allows you to set values of an existing array using a list of indexes and values.
Supports a stride (vector size) of 1 to 4.

Demo

https://cables.gl/op/Ops.Patch.PWYoCSM.ArraySetValuesByIndexArray

Licence

Public domain dedication

Code

const inArr = op.inArray("Array");
const inStride = op.inSwitch("Array Stride", ["1", "2", "3", "4"], "1");
const inIdx = op.inArray("Indices");
const inValues = op.inArray("Values");


const outArr = op.outArray("Results");
const outStride = op.outNumber("Stride");

op.toWorkPortsNeedToBeLinked(inArr);

inArr.onChange = inStride.onChange = inIdx.onChange = inValues.onChange = () =>
{
    const arr = inArr.get();
    if (!arr)
    {
        outArr.set(null);
        return;
    }



    //Fill result array with original array values
    const res = [];
     for (let i = 0; i < arr.length; i++)
    {
     res.push(arr[i]);
    }

    //For each item in Idx array set the approriate slices in result array
    const stride = parseInt(inStride.get());
    const idx = inIdx.get();
    const values = inValues.get();

    //Only assemble if idx and values arrays have some data in them
    if(idx&&values)
    {
        for (let i = 0; i < idx.length; i++)
        {

            const k = idx[i] * stride;
            const l = i * stride;

            res[k] = values[l];

            if (stride >= 2)
            {
                res[k+1] = values[l+1];
            }

            if (stride >= 3)
            {
                res[k+2] = values[l+2];
            }

            if (stride >= 4)
            {
                res[k+3] = values[l+3];
            }
        }
    }
    outStride.set(stride);
    outArr.setRef(res);
};