Public Domain OpenScad Bezier Function

thingiverse

Experimenting with fillets on this object (http://www.thingiverse.com/thing:8416) inspired me to develop a versatile Bezier function for OpenScad. The public domain code creates 2D Bezier curves using four control points, which are commonly employed in handcrafted graphics within OpenScad. With this tool, users can create more curvaceous objects in OpenScad, and extending it to 3D is straightforward. Adding more images showcases various ways of utilizing the function, including changing color over an object's surface using a Bezier curve. To use the BezQuadCurve module, follow these steps: 1) Set control points, 2) Choose a focal point, and 3) Invoke the BezQuadCurve() module. Enjoy the curvaceous outcomes! If using the function, remember to comment out printing control points. The 'focalPoint' determines origin points for triangle fans; choose it based on your desired solid. Utilize the 'PointAlongBez4' function to find any point along a bezier curve defined by control points and 'u' factor. This standard graphics feature offers immense utility in OpenScad.