Скачать или смотреть How to animate a rotating earth in vpython

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to animate a rotating earth in vpython, you can use the `sphere` object to represent the earth and the `rate` function to control the animation speed. here's a step-by-step tutorial along with a code example:

step 1: install vpython
make sure you have vpython installed on your system. you can install it using pip:


step 2: create a vpython program
open your favorite code editor and create a new python script. here's an example code that animates a rotating earth:



step 3: understanding the code
we first import the necessary modules from vpython.
we create a `sphere` object called `earth` at the center of the scene with a radius of 1 and apply a texture of the earth to it.
we set the initial rotation angle to 0 and define the rotation speed.
inside the animation loop, we use the `rate` function to limit the frame rate to 30 frames per second.
we then update the earth's rotation by rotating it around the y-axis and increment the rotation angle.

step 4: run the program
save the script with a `.py` extension and run it using a python interpreter. you should see a window pop up with a rotating earth animation.

that's it! you've successfully created an animated rotating earth in vpython. feel free to customize the code to add more features or make it more interactive.

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