[javascript-dev] How to get matrixoutput from jit.gl.gridshape

Hi list,

I'm currently trying to get the hang of javascript with jitter, but  
I've hit a bit of a snag.  I'm trying to recreate Andrew's Jitter  
Recipe 12: Texture Distortion in js.  I need to be able to grab the  
output matrix of a jit.gl.gridshape object in matrixoutput mode.  1)  
How do I do this? and 2) Is it necessary to declare a render  
destination if the gridshape is only used in matrixoutput mode?

Here's the relevant code:

var  myShape = new JitterObject("jit.gl.gridshape");  //Render  
destination necessary?
	myShape.shape = "plane";
	myShape.dim = [2, 2];
	myShape.matrixoutput = 1;
var shapeMatrix = new JitterMatrix(3, "float32", 2, 2);

function bang() {
	myShape.matrixcalc(shapeMatrix, shapeMatrix) //What's the right  
method call?
	outlet(0, "jit_matrix", shapeMatrix.name);
}

Thanks for any insights.