def update(self, params, values):
<EOL>params = listify(params)<EOL>values = listify(values)<EOL>for i, p in enumerate(params):<EOL><INDENT>if (p[-<NUM_LIT:2>:] == '<STR_LIT>') and (values[i] < <NUM_LIT:0>):<EOL><INDENT>values[i] = <NUM_LIT:0.0><EOL><DEDENT><DEDENT>super(PlatonicSpheresCollection, self).update(params, values)<EOL>
Calls an update, but clips radii to be > 0