# Factory

## Factory

### Code <a href="#code" id="code"></a>

[`AlgebraFactory.sol`](https://polygonscan.com/address/0x411b0fAcC3489691f28ad58c47006AF5E3Ab3A28)

### Address <a href="#address" id="address"></a>

`AlgebraFactory` is deployed at `0x411b0fAcC3489691f28ad58c47006AF5E3Ab3A28` on the Polygon [mainnet](https://polygonscan.com/address/0x411b0fAcC3489691f28ad58c47006AF5E3Ab3A28).

## Events <a href="#events" id="events"></a>

### Owner[#](https://docs.quickswap.exchange/reference/smart-contracts/v3/01-factory#owner) <a href="#owner" id="owner"></a>

`event Owner(address indexed newOwner);`

Emitted when the owner of the factory is changed

* `newOwner` The owner after the owner was changed

### VaultAddress <a href="#vaultaddress" id="vaultaddress"></a>

`event VaultAddress(address indexed newVaultAddress);`

Emitted when the vault address is changed

* `newVaultAddress` The vault address after the address was changed

### Pool <a href="#pool" id="pool"></a>

`event Pool(address indexed token0, address indexed token1, address pool);`

Emitted when a pool is created

* `token0` The first token of the pool by address sort order
* `token1` The second token of the pool by address sort order
* `pool` The address of the created pool

### FarmingAddress <a href="#farmingaddress" id="farmingaddress"></a>

`event FarmingAddress(address indexed newFarmingAddress);`

Emitted when the farming address is changed

* `newFarmingAddress` The farming address after the address was changed

### FeeConfiguration <a href="#feeconfiguration" id="feeconfiguration"></a>

`event FeeConfiguration(uint16 alpha1, uint16 alpha2, uint32 beta1, uint32 beta2, uint16 gamma1, uint16 gamma2, uint32 volumeBeta, uint16 volumeGamma, uint16 baseFee);`

Emitted when the farming address is changed

* `newFarmingAddress` The farming address after the address was changed

## Read-Only Functions[#](https://docs.quickswap.exchange/reference/smart-contracts/v3/01-factory#read-only-functions) <a href="#read-only-functions" id="read-only-functions"></a>

### owner[#](https://docs.quickswap.exchange/reference/smart-contracts/v3/01-factory#owner-1) <a href="#owner-1" id="owner-1"></a>

`function owner() external view returns (address);`

Returns the address of the current factory owner. Can be changed by the current owner via setOwner

### poolDeployer <a href="#pooldeployer" id="pooldeployer"></a>

`function poolDeployer() external view returns (address);`

Returns the address of the poolDeployer

### farmingAddress <a href="#farmingaddress-1" id="farmingaddress-1"></a>

`function farmingAddress() external view returns (address);`

Is retrieved from the pools to restrict calling certain functions not by a tokenomics contract Returns the tokenomics contract address

### vaultAddress <a href="#vaultaddress-1" id="vaultaddress-1"></a>

`function vaultAddress() external view returns (address);`

### poolByPair <a href="#poolbypair" id="poolbypair"></a>

`function poolByPair(address tokenA, address tokenB) external view returns (address pool);`

Returns the pool address for a given pair of tokens and a fee, or address 0 if it does not exist. tokenA and tokenB may be passed in either token0/token1 or token1/token0 order

Params

* `tokenA` The contract address of either token0 or token1
* `tokenB` The contract address of the other token

Returns

* `pool` The pool address

## State-Changing Functions <a href="#state-changing-functions" id="state-changing-functions"></a>

### createPool <a href="#createpool" id="createpool"></a>

`function createPool(address tokenA, address tokenB) external returns (address pool);`

Creates a pool for the given two tokens and fee. tokenA and tokenB may be passed in either order: token0/token1 or token1/token0. tickSpacing is retrieved from the fee. The call will revert if the pool already exists, the fee is invalid, or the token arguments are invalid.

Params

* `tokenA` One of the two tokens in the desired pool
* `tokenB` The other of the two tokens in the desired pool

Returns

* `pool` The address of the newly created pool

### setOwner <a href="#setowner" id="setowner"></a>

`function setOwner(address _owner) external;`

Updates the owner of the factory. Must be called by the current owner

Params

* `_owner` The new owner of the factory

### setFarmingAddress <a href="#setfarmingaddress" id="setfarmingaddress"></a>

f`unction setFarmingAddress(address _farmingAddress) external;`

Updates tokenomics address on the factory

Params

* `_farmingAddress` The new tokenomics contract address

### setVaultAddress <a href="#setvaultaddress" id="setvaultaddress"></a>

`function setVaultAddress(address _vaultAddress) external;`

Updates vault address on the factory

Params

* `_vaultAddress` The new vault contract address

### setBaseFeeConfiguration <a href="#setbasefeeconfiguration" id="setbasefeeconfiguration"></a>

`function setBaseFeeConfiguration(uint16 alpha1, uint16 alpha2, uint32 beta1, uint32 beta2, uint16 gamma1, uint16 gamma2, uint32 volumeBeta, uint16 volumeGamma, uint16 baseFee) external;`

Changes initial fee configuration for new pools. Changes coefficients for sigmoids: α / (1 + e^( (β-x) / γ)) alpha1 + alpha2 + baseFee (max possible fee) must be <= type(uint16).max, gammas must be > 0

Params

* `alpha1` max value of the first sigmoid
* `alpha2` max value of the second sigmoid
* `beta1` shift along the x-axis for the first sigmoid
* `beta2` shift along the x-axis for the second sigmoid
* `gamma1` horizontal stretch factor for the first sigmoid
* `gamma2` horizontal stretch factor for the second sigmoid
* `volumeBeta` shift along the x-axis for the outer volume-sigmoid
* `volumeGamma` horizontal stretch factor the outer volume-sigmoid
* `baseFee` minimum possible fee


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