// Simulate the tracing of a path with the accumulator
void simulate(Accumulator &accum, const char **events, int testno)
{
accum.begin();
accum.pushState();
// for each ray stop in the path (see test cases) ...
while (*events) {
const char *e = *events;
// for each label in this hit
while (*e) {
ustring sym(e, 1);
// advance our state with the label
accum.move(sym);
e++;
}
// always finish the hit with a stop label
accum.move(Labels::STOP);
events++;
}
// Here is were we have reached a light, accumulate color
accum.accum(Color3(1, 1, 1));
// Restore state and flush
accum.popState();
accum.end((void *)(long int)testno);
}
