svg-gear-generator

This library allows you to generate an SVG of a simple gear. This does NOT generate a technically accurate gear, with things like correct curved involutes and undercuts, etc. Useful for custom settings icons, (and generating stars!).

Installation

yarn add svg-gear-generator

or

npm install svg-gear-generator --save

Usage

There are three possible uses:

1. generateGear(args): This generates a d attribute for use with <path>. Used internally by the following components.
2. <Gear> component: For use with React. Returns a <path> element.
3. <GearWithAxle> component: For use with React, same as <Gear> but also includes a circle for the axle.

Arguments for the generateGear function and custom props for <Gear> and <GearWithAxle> are the same:

• radii: { outer: number; inner: number }: Specify the outer and inner radiuses of the gear (addendum and dedendum circle radiuses)
• numTeeth: number: Number of gear teeth.
• toothThicknessPercent: number: For each tooth, how much of it is the flat part (see examples). Optional, defaults to 0.5

The <Gear> component additionally takes any props that <path> does. The <GearWithAxle> takes additionally:

• axleRadius: number: Radius of the axle.
• axleProps: React.SVGAttributes<SVGPathElement>: Any additional props to be passed to the <circle> element. If undefined, will copy any props specified on the <GearWithAxle> component onto the <circle> element.

Examples

Gear with 9 teeth and axle.

<svg xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 4 4">
    <GearWithAxle
        axleRadius={0.6}
        numTeeth={9}
        radii={{inner: 1.0, outer: 0.8}}
        toothThicknessPercent={0.5}
        fill="none"
        stroke="black"
        strokeWidth={0.05}
        strokeLinejoin="round"
    />
</svg>

Gear with 13 teeth.

<svg xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 4 4">
    <Gear
        numTeeth={13}
        radii={{inner: 1.0, outer: 0.85}}
        toothThicknessPercent={0.5}
        fill="none"
        stroke="black"
        strokeWidth={0.05}
        strokeLinejoin="round"
    />
</svg>

Starbust

<svg xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 4 4">
    <Gear
        numTeeth={13}
        radii={{inner: 1.0, outer: 0.7}}
        toothThicknessPercent={1.0}
        fill="none"
        stroke="black"
        strokeWidth={0.05}
        strokeLinejoin="round"
    />
</svg>

Star

<svg xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 4 4">
    <Gear
        numTeeth={5}
        radii={{inner: 1.0, outer: 0.4}}
        toothThicknessPercent={0.0}
        fill="none"
        stroke="black"
        strokeWidth={0.05}
        strokeLinejoin="miter"
    />
</svg>

License

MIT

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