A simple vase

This is a simple vase that shows off the smoothSpline API.

We can have a look at the rendered shape.

And here is what the code looks like.

const defaultParams = {
  height: 100,
  baseWidth: 20,
  wallThickness: 5,
  lowerCircleRadius: 1.5,
  lowerCirclPosition: 0.25,
  higherCircleRadius: 0.75,
  higherCirclePosition: 0.75,
  topRadius: 0.9,
  topFillet: true,
  bottomHeavy: true,
};

/** @typedef { typeof import("replicad") } replicadLib */
/** @type {function(replicadLib, typeof defaultParams): any} */
const main = (
  { Sketcher },
  {
    height,
    baseWidth,
    wallThickness,
    lowerCirclPosition,
    lowerCircleRadius,
    higherCircleRadius,
    higherCirclePosition,
    topRadius,
    topFillet,
    bottomHeavy,
  }
) => {
  const splinesConfig = [
    { position: lowerCirclPosition, radius: lowerCircleRadius },
    {
      position: higherCirclePosition,
      radius: higherCircleRadius,
      startFactor: bottomHeavy ? 3 : 1,
    },
    { position: 1, radius: topRadius, startFactor: bottomHeavy ? 3 : 1 },
  ];

  const sketchVaseProfile = new Sketcher("XZ").hLine(baseWidth);

  splinesConfig.forEach(({ position, radius, startFactor, endFactor }) => {
    sketchVaseProfile.smoothSplineTo([baseWidth * radius, height * position], {
      endTangent: [0, 1],
      startFactor,
      endFactor,
    });
  });

  let vase = sketchVaseProfile.lineTo([0, height]).close().revolve();

  if (wallThickness) {
    vase = vase.shell(wallThickness, (f) => f.containsPoint([0, 0, height]));
  }

  if (topFillet) {
    vase = vase.fillet(wallThickness / 3, (e) => e.inPlane("XY", height));
  }

  return vase;
};