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2023-06-20 Sine Waves

Description​

Series of sine waves plotted with increasing amplitude

Images​

example of plotted code

Plotter Preview​

preview screenshot

Code​

import math
from gcode2dplotterart import Plotter2D

magic_mark_eraser = "magic_marker_eraser"
color1 = "color1"
color2 = "color2"

plotter = Plotter2D(
    title="Sine Waves",
    x_min=0,
    x_max=220,
    y_min=0,
    y_max=150,
    feed_rate=10000,
    output_directory="./output",
    handle_out_of_bounds="Warning",
)

plotter.add_layer(magic_mark_eraser, color="red")
plotter.add_layer(color1, color="green")
plotter.add_layer(color2, color="blue")


def plot_sine_wave(y_offset, amplitude, wavelength):
    path = []
    scale_up = 10
    scale_down = 1 / scale_up

    for step in range(plotter.x_min * scale_up, plotter.x_max * scale_up):
        x = step * scale_down
        y = amplitude * math.sin((2 * math.pi * x) / wavelength)
        y += y_offset
        path.append((x, y))

    return path


OFFSETS = [i for i in range(10, 110, 5)]

for index, i in enumerate(OFFSETS):
    path = plot_sine_wave(y_offset=i, amplitude=index / 2, wavelength=40)
    plotter.layers[color1].add_path(path)

for index, i in enumerate(reversed(OFFSETS)):
    path = plot_sine_wave(y_offset=i, amplitude=index / 2, wavelength=40)
    plotter.layers[color2].add_path(path)

for index, i in enumerate(OFFSETS):
    path = plot_sine_wave(y_offset=i, amplitude=5, wavelength=80)
    plotter.layers[magic_mark_eraser].add_path(path)


plotter.preview()
plotter.save()