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This article mainly introduces Python how to quickly create GIF dynamic pictures, the article is very detailed, has a certain reference value, interested friends must read it!

What is a GIF diagram?

GIF (Graphics Interchange format) is a bitmap image format developed in 1987.

A GIF is basically a series of images with different settings, such as:

Loop playback

Duration of each frame (picture)

Other...

GIF can also be a still image.

Pillow

Pillow, a branch of the Python graphics processing library PIL, introduces a number of changes and enhancements to make API easy to use or to handle more image formats and requirements. Support to open, process and save picture files in many different formats.

Using Python to generate GIF and install Pillow

As a first step, we need to install Pillow:

Pip install Pillow generates GIF

We generate a GIF dynamic picture of a red ball falling down as an example of the article.

First, write a function that uses Pillow to draw a red ball on a picture.

From PIL import Image, ImageDrawdef create_image_with_ball (width, height, ball_x, ball_y, ball_size): img = Image.new ('RGB', (width, height), (255,255,255)) draw = ImageDraw.Draw (img) # draw.ellipse takes a 4-tuple (x0, y0, x1, y1) where (x0, y0) is the top-left bound of the box # and (x1) Y1) is the lower-right bound of the box.draw.ellipse ((ball_x, ball_y, ball_x + ball_size, ball_y + ball_size), fill='red') return img

In the above code, we use Image.new to create a RGB image, set the background to white, and specify the size of the image.

Then, a red circle is drawn through the specified parameter position of ImageDraw in the picture. So, all we have to do is create multiple pictures and keep letting the red ball fall.

# Create the framesframes = [] x, y = 0, 0for i in range (10): new_frame = create_image_with_ball (400,400, x, y, 40) frames.append (new_frame) x + = 40y + = 4 hours Save into a GIF file that loops foreverframes [0] .save ('moving_ball.gif', format='GIF', append_images=frames [1:], save_all=True, duration=100, loop=0)

Explain the above code:

Initialize an empty list frames with zero-point coordinates x and y

Use a for loop that runs ten times, each time to create a 400x400-sized picture with a different position of the red ball

Change the coordinates of the red ball so that it falls diagonally

Set the parameter format='GIF', append_images=frames [1:] to save the GIF picture

100ms per frame of picture playback (duration=100)

The GIF picture loops all the time (loop=0, if set to 1, loop once, set to 2, cycle twice, and so on)

The above is all the content of the article "how to create GIF dynamic Pictures quickly by Python". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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