asy-pattern.asy

import patterns;

size(10cm, 0);

add("tile", tile());
add("checker", checker());
add("brick", brick());

filldraw(circle((0,0), 2), pattern("tile"), black + 1);
filldraw(circle((5,0), 2), pattern("checker"), black + 1);
filldraw(circle((0,-5), 2), pattern("brick"), black + 1);

picture test;
real d = 5;
pen p = defaultpen + 1;
draw(test, (0,0)--(d,d), p);
draw(test, (d,0)--(0,d), p);

// add("test", test);
// add("test", test, (1,1), (1,1));
add("test", test, (-0.3, -0.3), (-0.3, -0.3));
filldraw(circle((5,-5), 2), pattern("test"), black + 1);