Introduction to dot geometry

Dot geometry is a set of three JavaScript libraries that make it easy for developers to create and manipulate 2D geometric shapes on the web. These libraries include:

1. dot: A library for creating and manipulating points, lines, and curves.
2. path: A library for creating and manipulating paths and shapes.
3. polygon: A library for creating and manipulating polygons.

Together, these libraries provide a comprehensive set of tools for building interactive graphics, data visualizations, and more.

Getting Started

To get started with dot geometry, you can download the libraries from the official repository on GitHub. Once you have the libraries, you can include them in your project using a script tag or ES6 import statement. Here is an example of how to include the dot library using a script tag:

<script src="path/to/dot.js"></script>

Alternatively, you can use an ES6 import statement to include the library:

import {dot} from 'path/to/dot.js';

Once you have included the library, you can begin using its functionality to create and manipulate geometric shapes.

Using dot

The dot library provides a simple API for creating and manipulating points, lines, and curves. Here is an example of how to create a point:

const p = dot.point(10, 10);

This code creates a point at (10, 10). You can also create points using polar coordinates:

const p = dot.polar(10, Math.PI/2);

This creates a point with a distance of 10 from the origin and an angle of pi/2.

The dot library also provides a number of functions for manipulating points, such as translate, rotate, and scale.

Using path

The path library provides a set of functions for working with paths and shapes. Here is an example of how to create a path:

const p = path().moveTo(0, 0)
                .lineTo(100, 0)
                .lineTo(100, 100)
                .lineTo(0, 100)
                .closePath();

This creates a path that outlines a square. You can also create paths using curves:

const p = path().moveTo(0, 0)
                .quadraticBezierTo(100, 0, 100, 100)
                .quadraticBezierTo(100, 200, 0, 200)
                .quadraticBezierTo(-100, 200, -100, 100)
                .closePath();

This creates a path that outlines a rounded rectangle.

The path library also provides functions for manipulating paths, such as translate, rotate, and scale.

Using polygon

The polygon library provides functions for working with polygons. Here is an example of how to create a polygon:

const p = polygon([0, 0], [100, 0], [100, 100], [0, 100]);

This creates a polygon that represents a square. You can also create polygons using curved edges:

const p = polygon([0, 0], [100, 0], [100, 100], [0, 100]).curveEdges(10);

This creates a polygon with curved edges of radius 10.

The polygon library also provides functions for manipulating polygons, such as translate, rotate, and scale.

Conclusion

Dot geometry provides a powerful set of tools for working with 2D geometric shapes on the web. By using the dot, path, and polygon libraries, developers can create interactive graphics and data visualizations with ease. So, why not give it a try and see what you can create?