Method sampleByNumber

src/main/java/field/graphics/FLine.java:568–576

returns a list of `Vec3` (i.e. positions) by repeatedly moving along the line in `steps`; the beginning and end of the line will be in this list.

(int steps)

			r.add(c.position());
		}
		return r;
	}


	/**
	 * calls function 'fun' with a parameter that goes from 0 -> 1 (inclusive) in 'samples' steps. Then hands the results to `data('t*', ...)`
	 */
	public FLine fromSampling(Function<Double, Object> fun, int samples) {
		List<Object> rr = new ArrayList<Object>();
		for (int i = 0; i < samples; i++) {
			double alpha = i / (samples - 1f);
			Object o = fun.apply(alpha);