def paint(hierarchy, trace, width):
"""
take a point trace, and paint it onto a brush
"""
complex = hierarchy[-1]
#refine the trace
positions, weights = generate_trace(trace)
brush = Mapping(hierarchy, positions).inject(weights)
brush = multigrid.diffuse(hierarchy, brush, width**2)
return complex.P0D2 * brush
def smooth(x):
width = 0.005
return multigrid.diffuse(hierarchy, x, width**2)
