Cylindrical constructor

Cylindrical([
  1. num? radius,
  2. num? theta,
  3. num? y
])

Implementation

Cylindrical([num? radius, num? theta, num? y]) {
  this.radius = (radius != null)
      ? radius
      : 1.0; // distance from the origin to a point in the x-z plane
  this.theta = (theta != null)
      ? theta
      : 0; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
  this.y = (y != null) ? y : 0; // height above the x-z plane
}