How to draw a circle in scratch-How to draw a circle in scratch

Scratch is a graphical programming tool developed by the Massachusetts Institute of Technology in the United States. It is specially designed for teenagers aged 8-16 years old. It uses a unique "building block" programming interface that allows users to create animations, games and interactive stories by dragging and dropping code modules without having to memorize complex syntax. This tool not only stimulates creativity, but also develops logical thinking and problem-solving skills. It is one of the most popular programming enlightenment platforms in the world. Learners can also share their works in online communities to inspire and communicate with each other. Next, let the editor of Huajun explain to you how to draw a circle in scratch and how to draw a circle in scratch!

first step

Open Scratch and click the "Extend" button in the lower left corner. Select the "Brush" module and add it to the toolbar.

Step 2

Click the Code tab → Make My Brick.

Name the building block "Draw a Circle" and add parameters:

Input: radius (default 50)

Input: color (default red)

Step 3

Click the Variables tab → New Variable.

Create two variables:

Radius (used to control the size of the ring)

Angle (used to calculate coordinates in a loop)

Step 4

Add the following blocks before the code starts:

scratch

When the green flag is clicked

Erase all // Clear the stage

Move the brush to (0, 0) // center position of the circle

Set angle to [0] //Initialize angle

Step 5

Implemented using a loop and variable increment:

scratch

Repeat (5) times

Draw a circle (radius) [color] // Call custom building blocks to increase the radius (20) // Increment the radius of each ring and increase the color effects by (30) // Color gradient (optional)

Step 6

Number of rings: 5 concentric rings.

Color change: realize gradient through "color effects" (optional replacement with fixed color).

Increasing radius: Each ring is 20 pixels larger than the previous one.

The above is how to draw a circle in scratch and the method of drawing a circle in scratch compiled by Huajun editor for you. I hope it can help you!