scratch programming-画螺旋线draw spi

2020-09-13
the spiral is a very beautiful shape in our natural world.

draw a spiral in Scratch is not so difficult.

• the first one is a simplified version.

  
  one spiral

image.png

the core statements are in the loop, and the most important statements are:

image.png

• the second one is work from other people who shared it.
  This project uses the pen to draw spirals. Click your mouse to draw a spiral.

  
  image.png
  

  these statements are to clear the screen.

  
  image.png
  draw a spiral function will be called in the loop.
  image.png
  you will find that this function is just like the first case.
  image.png

ok, let's test the cases:
https://scratch.mit.edu/projects/399996288
https://scratch.mit.edu/projects/424965239