Function addL

docs/app/js/sanddance-app.js:122074–122074

(x15, y14)

let bounds, lx, ly, rot, ma, mb, mc, md;
const add = (x14, y13)=>bounds.add(x14, y13);
const addL = (x15, y14)=>add(lx = x15, ly = y14);
const addX = (x16)=>add(x16, bounds.y1);
const addY = (y15)=>add(bounds.x1, y15);
const px = (x17, y16)=>ma * x17 + mc * y16;