Wavy vases

A more complex vase generator that uses twisted extrusion.

We can have a look at the rendered shape.

And here is what the code looks like.

const { drawCircle, drawPolysides, polysideInnerRadius } = replicad;

const defaultParams = {
  height: 150,
  radius: 40,
  sidesCount: 12,
  sideRadius: -2,
  sideTwist: 6,
  endFactor: 1.5,
  topFillet: 0,
  bottomFillet: 5,

  holeMode: 1,
  wallThickness: 2,
};

const main = (
  r,
  {
    height,
    radius,
    sidesCount,
    sideRadius,
    sideTwist,
    endFactor,
    topFillet,
    bottomFillet,
    holeMode,
    wallThickness,
  }
) => {
  const extrusionProfile = endFactor
    ? { profile: "s-curve", endFactor }
    : undefined;
  const twistAngle = (360 / sidesCount) * sideTwist;

  let shape = drawPolysides(radius, sidesCount, -sideRadius)
    .sketchOnPlane()
    .extrude(height, {
      twistAngle,
      extrusionProfile,
    });

  if (bottomFillet) {
    shape = shape.fillet(bottomFillet, (e) => e.inPlane("XY"));
  }

  if (holeMode === 1 || holeMode === 2) {
    const holeHeight = height - wallThickness;

    let hole;
    if (holeMode === 1) {
      const insideRadius =
        polysideInnerRadius(radius, sidesCount, sideRadius) - wallThickness;

      hole = drawCircle(insideRadius).sketchOnPlane().extrude(holeHeight, {
        extrusionProfile,
      });

      shape = shape.cut(
        hole
          .fillet(
            Math.max(wallThickness / 3, bottomFillet - wallThickness),
            (e) => e.inPlane("XY")
          )
          .translate([0, 0, wallThickness])
      );
    } else if (holeMode === 2) {
      shape = shape.shell(wallThickness, (f) => f.inPlane("XY", height));
    }
  }

  if (topFillet) {
    shape = shape.fillet(topFillet, (e) => e.inPlane("XY", height));
  }
  return shape;
};