Function sinewaveXYpolar

sinewaveXYpolar(
    start: Point,
    direction_polar: number,
    amplitude: number,
    period_length: number,
    periods: number,
    segments_per_period?: number,
    extra_half_period?: boolean,
    phase_shift?: number,
): Point[]
Generates an array of Points forming a 2D sinusoidal wave pattern.
Parameters
- start: Point
  The starting point of the wave sequence.
- direction_polar: number
  The overall direction angle (radians) the wave travels along.
- amplitude: number
  The peak amplitude of the sine wave.
- period_length: number
  The spatial length of one full cycle along the travel axis.
- periods: number
  The number of full wave cycles to generate.
- segments_per_period: number = 16
  The resolution (number of points) generated per cycle.
- extra_half_period: boolean = false
  Set to true to add an extra half-cycle at the end.
- phase_shift: number = 0
  The starting phase shift of the sine wave in radians.
Returns Point[]
Array of Points defining a smooth sine wave.
- Defined in geometry/waves.ts:73