Life & fun · February 26, 2023
Visualization of Catmull-ROM Spline Generation
Visualization of Catmull-ROM Spline Generation launched on February 26, 2023 with 6 votes, #1,670 of 3,829 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 3 years on.
What it does
When learning about Catmull-Rom splines, I was looking for visualizations to get an an intuition behind how they get constructed. While there are many explanations and demos around the internet, I couldn't find any that graphically shows the role and behavior of the various intermediate/helper points at work. The following is a plotting of the build-up based on the Wikipedia page 's definition. C follows the final line, and is derived linearly from B points, which in turn are derived linearly from A points, and those from the control points P. You can move around the four blue control points to change the curve. Manually move the black slider to jump to any point along the parametrization…from billhillapps.com
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