Calculator

Factorio Quality Calculator

Discussion

You can use an iterative approach to simulate production.

import QualityCalculator

var yield = Yield.common
while !(0..<4).allSatisfy({ quality[$0] < 1e-12 }) {
    yield = quality.produce(productivity: Module.productivity(count: 8)) // Cryogenic plant
    yield = quality.produce(quality: Module.quality(count: 4), productivity: 0.25) // recycler
}
print(yield) // (0%, 0%, 0%, 0%, 4.835199%)

After the iteration, yield contains the results of a production process that loops between Cryogenic plant and recycler to obtain legendary items. The last value (4.8%) indicates the efficiency of legendary production.

Parameters

You can set the quality augment to indicate the quality of the production process (defaults to 0).

Yield.common.produce(quality: Module.quality(count: 4))
// (75.2%, 22.32%, 2.232%, 0.2232%, 0.0248%)

The resulting vector is a combination of all qualities, as indicated by contents

You can also set the productivity augment to set the productivity bonus (defaults to 1).

Yield.common.produce(quality: 0, productivity: Module.productivity(count: 2))
// (150%, 0%, 0%, 0%, 0%)