//make a field and fill it
var f=Stackie.makeField(256,256);
f.generate(Stackie.program("x8*y8*p1+2/x2*y2*p+x28**y28**p4/+112/x-d*-112/y-d*-*d*d*d*d**"));
var smoke = f.getImageData();
//shorthand approach. Just give me the ImageData.
var flame=Stackie.generate("x1x-*5*dx4**y3*p+y!-","xy!1+*");
canvas_ctx.putImageData(image,0,0);