Method at

src/shape/custom_shapes.js:858–873

(contoursIndex, primitivesIndex, verticesIndex)

  // TEST
  at(contoursIndex, primitivesIndex, verticesIndex) {
    let contour;
    let primitive;

    contour = this.contours.at(contoursIndex);

    switch(arguments.length) {
      case 1:
        return contour;
      case 2:
        return contour.primitives.at(primitivesIndex);
      case 3:
        primitive = contour.primitives.at(primitivesIndex);
        return primitive.vertices.at(verticesIndex);
    }
  }

  // maybe call this clear() for consistency with PrimitiveShapeCreators.clear()?
  // note: p5.Geometry has a reset() method, but also clearColors()