Making Of: Line Drawing Tutorial (2017)

This article provides a detailed tutorial on creating interactive line drawing diagrams using D3.js and SVG. It outlines the process of building a web page that includes a grid and allows users to draw lines by dragging points. The tutorial emphasizes the importance of understanding JavaScript, SVG, and HTML for effective implementation. It begins with setting up a basic web page template and progresses through creating a grid, implementing the line drawing algorithm, and adding interactivity through draggable points. The author explains how to encapsulate functionality within a diagram object, allowing for better organization and reuse of code. Key concepts include linear interpolation for both numbers and points, as well as the use of D3's enter-exit pattern for managing dynamic elements. The tutorial aims to guide readers in recreating the diagrams while learning about the underlying algorithms and interactions involved in creating interactive visualizations.

- The tutorial focuses on creating interactive line drawing diagrams using D3.js and SVG.

- It requires knowledge of JavaScript, SVG, and HTML for effective implementation.

- Key concepts include linear interpolation and D3's enter-exit pattern for dynamic elements.

- The tutorial encourages readers to recreate diagrams to enhance their understanding of the algorithms.

- The final implementation allows users to drag points to dynamically update the drawn line.