This would be very usefull for using in conjunction with a matrixctrl, when feeding the input of a grid controller (especially in m4l). I’m using the js now to cut down data flow, but I’m thinking it would work better if it were built as a C (or Java) external and could operate at high priority. Perhaps its unimportant (because matrixctrl is always defered? I can’t tell and I’ve been looking around)…if so, someone please set me straight.

It merely filters data from the cells of a matrixctrl from being sent when the matrixctrl receives a bang and the data hasn’t changed since the last bang. Its basically a [change] object, but for a matrixctrl.

autowatch=1

var matrix=[];

init();

function init()
{
    for(d=0;d<16;d++)
    {
        matrix[d]=[];
        for(dd=0;dd<16;dd++)
        {
            matrix[d][dd]=0;
        }
    }
}

function list(x, y, v)
{
    if(matrix[x][y]!=v)
    {
        outlet(0, x, y, v);
        matrix[x][y]=v;
    }
}

Any help greatly appreciated. It would be easy (I suppose) to have two arguments specifying the dimensions of the matrixctrl.