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chapter 3
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| class Gear { | |
| constructor( | |
| readonly chainring: number, | |
| readonly cog: number, | |
| readonly rim: number, | |
| readonly tire: number | |
| ) {} | |
| get ratio() { | |
| return this.chainring / this.cog; | |
| } | |
| get gearInches() { | |
| return this.ratio * new Wheel(this.rim, this.tire).diameter; | |
| } | |
| } | |
| class Wheel { | |
| constructor(readonly rim: number, readonly tire: number) {} | |
| get diameter() { | |
| return this.rim * (this.tire * 2); | |
| } | |
| } |
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