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| Original file line number | Diff line number | Diff line change |
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| pragma solidity ^0.6.0; | ||
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| interface ICurve { | ||
| function minSupply() external view returns (uint256); | ||
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| function maxSupply() external view returns (uint256); | ||
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| function minCeiling() external view returns (uint256); | ||
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| function maxCeiling() external view returns (uint256); | ||
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| function calcCeiling(uint256 _supply) external view returns (uint256); | ||
| } | ||
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| abstract contract Curve is ICurve { | ||
| /* ========== EVENTS ========== */ | ||
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| event MinSupplyChanged( | ||
| address indexed operator, | ||
| uint256 _old, | ||
| uint256 _new | ||
| ); | ||
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| event MaxSupplyChanged( | ||
| address indexed operator, | ||
| uint256 _old, | ||
| uint256 _new | ||
| ); | ||
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| event MinCeilingChanged( | ||
| address indexed operator, | ||
| uint256 _old, | ||
| uint256 _new | ||
| ); | ||
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| event MaxCeilingChanged( | ||
| address indexed operator, | ||
| uint256 _old, | ||
| uint256 _new | ||
| ); | ||
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| /* ========== STATE VARIABLES ========== */ | ||
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| uint256 public override minSupply; | ||
| uint256 public override maxSupply; | ||
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| uint256 public override minCeiling; | ||
| uint256 public override maxCeiling; | ||
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| /* ========== GOVERNANCE ========== */ | ||
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| function setMinSupply(uint256 _newMinSupply) public virtual { | ||
| uint256 oldMinSupply = minSupply; | ||
| minSupply = _newMinSupply; | ||
| emit MinSupplyChanged(msg.sender, oldMinSupply, _newMinSupply); | ||
| } | ||
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| function setMaxSupply(uint256 _newMaxSupply) public virtual { | ||
| uint256 oldMaxSupply = maxSupply; | ||
| maxSupply = _newMaxSupply; | ||
| emit MaxSupplyChanged(msg.sender, oldMaxSupply, _newMaxSupply); | ||
| } | ||
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| function setMinCeiling(uint256 _newMinCeiling) public virtual { | ||
| uint256 oldMinCeiling = _newMinCeiling; | ||
| minCeiling = _newMinCeiling; | ||
| emit MinCeilingChanged(msg.sender, oldMinCeiling, _newMinCeiling); | ||
| } | ||
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| function setMaxCeiling(uint256 _newMaxCeiling) public virtual { | ||
| uint256 oldMaxCeiling = _newMaxCeiling; | ||
| maxCeiling = _newMaxCeiling; | ||
| emit MaxCeilingChanged(msg.sender, oldMaxCeiling, _newMaxCeiling); | ||
| } | ||
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| function calcCeiling(uint256 _supply) | ||
| external | ||
| view | ||
| virtual | ||
| override | ||
| returns (uint256); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,73 @@ | ||
| pragma solidity ^0.6.0; | ||
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| import {SafeMath} from '@openzeppelin/contracts/math/SafeMath.sol'; | ||
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| import {Operator} from '../owner/Operator.sol'; | ||
| import {Curve} from './Curve.sol'; | ||
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| contract LinearThreshold is Operator, Curve { | ||
| using SafeMath for uint256; | ||
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| /* ========== CONSTRUCTOR ========== */ | ||
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| constructor( | ||
| uint256 _minSupply, | ||
| uint256 _maxSupply, | ||
| uint256 _minCeiling, | ||
| uint256 _maxCeiling | ||
| ) public { | ||
| minSupply = _minSupply; | ||
| maxSupply = _maxSupply; | ||
| minCeiling = _minCeiling; | ||
| maxCeiling = _maxCeiling; | ||
| } | ||
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| /* ========== GOVERNANCE ========== */ | ||
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| function setMinSupply(uint256 _newMinSupply) public override onlyOperator { | ||
| super.setMinSupply(_newMinSupply); | ||
| } | ||
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| function setMaxSupply(uint256 _newMaxSupply) public override onlyOperator { | ||
| super.setMaxSupply(_newMaxSupply); | ||
| } | ||
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| function setMinCeiling(uint256 _newMinCeiling) | ||
| public | ||
| override | ||
| onlyOperator | ||
| { | ||
| super.setMinCeiling(_newMinCeiling); | ||
| } | ||
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| function setMaxCeiling(uint256 _newMaxCeiling) | ||
| public | ||
| override | ||
| onlyOperator | ||
| { | ||
| super.setMaxCeiling(_newMaxCeiling); | ||
| } | ||
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| /* ========== VIEW FUNCTIONS ========== */ | ||
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| function calcCeiling(uint256 _supply) | ||
| public | ||
| view | ||
| override | ||
| returns (uint256) | ||
| { | ||
| if (_supply <= minSupply) { | ||
| return maxCeiling; | ||
| } | ||
| if (_supply >= maxSupply) { | ||
| return minCeiling; | ||
| } | ||
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| uint256 slope = | ||
| maxCeiling.sub(minCeiling).mul(1e18).div(maxSupply.sub(minSupply)); | ||
| uint256 ceiling = | ||
| maxCeiling.sub(slope.mul(_supply.sub(minSupply)).div(1e18)); | ||
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| return ceiling; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| pragma solidity ^0.6.0; | ||
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| import {Math} from '@openzeppelin/contracts/math/Math.sol'; | ||
| import {SafeMath} from '@openzeppelin/contracts/math/SafeMath.sol'; | ||
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| import {Operator} from '../owner/Operator.sol'; | ||
| import {Curve} from './Curve.sol'; | ||
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| contract SigmoidThreshold is Operator, Curve { | ||
| using SafeMath for uint256; | ||
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| /* ========== STATE VARIABLES ========== */ | ||
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| uint256[23] private slots; | ||
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| /* ========== CONSTRUCTOR ========== */ | ||
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| constructor( | ||
| uint256 _minSupply, | ||
| uint256 _maxSupply, | ||
| uint256 _minCeiling, | ||
| uint256 _maxCeiling | ||
| ) public { | ||
| minSupply = _minSupply; | ||
| maxSupply = _maxSupply; | ||
| minCeiling = _minCeiling; | ||
| maxCeiling = _maxCeiling; | ||
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| slots[0] = 1000000000000000000; | ||
| slots[1] = 994907149075715143; | ||
| slots[2] = 988513057369406817; | ||
| slots[3] = 982013790037908452; | ||
| slots[4] = 970687769248643639; | ||
| slots[5] = 952574126822433143; | ||
| slots[6] = 924141819978756551; | ||
| slots[7] = 880797077977882314; | ||
| slots[8] = 817574476193643651; | ||
| slots[9] = 731058578630004896; | ||
| slots[10] = 622459331201854593; | ||
| slots[11] = 500000000000000000; | ||
| slots[12] = 377540668798145407; | ||
| slots[13] = 268941421369995104; | ||
| slots[14] = 182425523806356349; | ||
| slots[15] = 119202922022117574; | ||
| slots[16] = 75858180021243560; | ||
| slots[17] = 47425873177566788; | ||
| slots[18] = 29312230751356326; | ||
| slots[19] = 17986209962091562; | ||
| slots[20] = 11486942630593183; | ||
| slots[21] = 5092850924284857; | ||
| slots[22] = 0; | ||
| } | ||
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| /* ========== GOVERNANCE ========== */ | ||
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| function setMinSupply(uint256 _newMinSupply) public override onlyOperator { | ||
| super.setMinSupply(_newMinSupply); | ||
| } | ||
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| function setMaxSupply(uint256 _newMaxSupply) public override onlyOperator { | ||
| super.setMaxSupply(_newMaxSupply); | ||
| } | ||
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| function setMinCeiling(uint256 _newMinCeiling) | ||
| public | ||
| override | ||
| onlyOperator | ||
| { | ||
| super.setMinCeiling(_newMinCeiling); | ||
| } | ||
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| function setMaxCeiling(uint256 _newMaxCeiling) | ||
| public | ||
| override | ||
| onlyOperator | ||
| { | ||
| super.setMaxCeiling(_newMaxCeiling); | ||
| } | ||
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| /* ========== VIEW FUNCTIONS ========== */ | ||
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| function calcCeiling(uint256 _supply) | ||
| public | ||
| view | ||
| override | ||
| returns (uint256) | ||
| { | ||
| if (_supply <= minSupply) { | ||
| return maxCeiling; | ||
| } | ||
| if (_supply >= maxSupply) { | ||
| return minCeiling; | ||
| } | ||
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| uint256 slotWidth = maxSupply.sub(minSupply).div(slots.length); | ||
| uint256 xa = _supply.sub(minSupply).div(slotWidth); | ||
| uint256 xb = Math.min(xa.add(1), slots.length.sub(1)); | ||
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| uint256 slope = slots[xa].sub(slots[xb]).mul(1e18).div(slotWidth); | ||
| uint256 wy = slots[xa].add(slope.mul(slotWidth.mul(xa)).div(1e18)); | ||
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| uint256 percentage = 0; | ||
| if (wy > slope.mul(_supply).div(1e18)) { | ||
| percentage = wy.sub(slope.mul(_supply).div(1e18)); | ||
| } else { | ||
| percentage = slope.mul(_supply).div(1e18).sub(wy); | ||
| } | ||
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| return | ||
| minCeiling.add( | ||
| maxCeiling.sub(minCeiling).mul(percentage).div(1e18) | ||
| ); | ||
| } | ||
| } |
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