Tracing multiple shapes on the same screen with Spyrograph

Introduction

In this tutorial, we’ll demonstrate how to chain screens for multiple traces, allowing us to create captivating artwork by layering different spirograph shapes on the same canvas with Spyrograph!

Follow along as we use a custom code snippet to showcase this technique in action

Creating our first spirograph

To begin, let’s create our first spirograph shape using the Hypotrochoid class. Import the necessary libraries and define the required parameters for the shape

from spyrograph import Hypotrochoid
import numpy as np

first_shape = Hypotrochoid(
    R=233,
    r=200,
    d=233,
    thetas=np.arange(0, 100*np.pi, .5)
)

Tracing the first shape

Next, trace the first shape and keep the screen open by calling the trace method. By default, the exit_on_click option is set to False, which ensures that the screen remains active after tracing the first shape

screen, turtles = first_shape.trace()

Creating a second shape

Now, let’s create a second shape by using the scale method to adjust the size of the first shape into a slightly smaller copy

second_shape = first_shape.scale(.85)

Trace the second shape on the same screen

Trace the second shape on the same screen by passing the existing screen to the trace function. Additionally, set the exit_on_click option to True and choose a different color for the second shape

second_shape.trace(
    exit_on_click=True,
    color="red",
    screen=screen
)

Experiment with different shapes and colors

Feel free to experiment with different shapes, sizes, and colors to create your unique spirograph artwork. You can create and layer multiple shapes on the same screen by following the steps outlined above

Conclusion

Chaining screens for multiple traces is a powerful technique to create visually stunning spirograph designs

By layering different shapes and colors on the same canvas, you can produce eye-catching and intricate artwork

Don’t be afraid to explore various patterns and unleash your creativity with Spyrograph!