Download this project!
Download the 18 sprites and 74 scripts of "Circle Works" and open it in Scratch Project Notes
Draw:
Press Draw to draw a circle of the specified radius.
Stop:
Press Stop to stop drawing.
Clear:
Press Clear to clear. You do not have to press Stop first.
Extras:
Press Extras to drop down extra features. Grey features cannot be used at that time. Following are explanations of the features.
Type Radius Value:
Allows you to use the ask bar to type a radius. Can be used anytime.
Fill Circle:
This can only be used once a circle is drawn. It fills the circle using a very simple method that can be used even by very young Scratchers. Download and go to Sprite1 for the method. Click again to un-fill.
Axis:
Can be used at any time. It draws or erases an axis.
Free Trace:
This can only be used when a circle is drawn. Move around the mouse and the Starfish will follow it around the circle and tell you the coordinates.
Angle Trace:
Can only be used with a drawn circle. It is the same as Free Trace but instead of using the mouse, you change the angle(in degrees).
Designs:
Can be used any time. This is what is shown on the display. Press Design to start. Move the origin to the mouse pointer at any time by pressing space. Change the speed.
Go ahead and use any method in this project. It would be nice if you gave me credit and told me about it.
Please comment!
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THIS IS BEAST!!!!!! = )
Thank you very much. :)
A splendid formula for filling circles! Did you come up with it yourself?
Thank you! Yes, I came up with it myself. I was thinking about what pen size actually means, and with a little experimentation I found out that it is the diameter.
Excellent project! Circles are hard!
They are. Thank you.
Astonishing! This is just incredible! I'm recommending it to be featured!
Wow! Thanks so much!
(view all replies)chat?
Huh?
(view all replies)dont go to so many decimal places it just confuses
Hi scmb1. Great work. Is there a way to vary the center of the circle? I'd like to set the center to x=73 and y=0 for a project.
Thank you. Yes, there is a way. Just add 73 to all x positions. Do you get what I mean?
(view all replies)Heh if your going to think copying is involved see my one
Once again, the only thing in common is that they both draw circles. I did not copy anyone.
copycat I made circle factory first it's way better
hey compying is alowed on scratch!
That is a nice project but I did not copy it. The features on our projects are quite different. Pretty much the only thing that is the same is that we both use sine and cosine to draw our circles. I, however, have used this method prior to this project. (link to project) Plus, I did not see your project until today. Please do not accuse people of copying haphazardly.
(view all replies)There are lots of interesting thing to learn from this project. Last year I tried having some 6th grade students think about how to draw circles based on a radius instead of stepping and turning. We didn't get very far, so thank you for this example. Your directions are particularly clear!
Thanks!
Very nice project and very creative too.
Thank you.
Cool project...the circle fill really took me by surprise too, nice technique! I like the other features as well, particularly the Design feature :)
Thank you! I came up with the fill method when I was thinking about what pen size means. I wondered if it could be the radius or the diameter. Turns out it's the diameter. I am glad you like it.
Excellent method to fill a circle!
Thank you!
Wow what a beautiful interface dropdown etc. I love this I got to look at your code and use it. I added it to the Graphing Calculator as well as quick math.
It is? OK. Thanks for letting me add stuff to the math gallery. Did you try Designs mode? I'm not sure if my instructions make sense for that. Can you let me know? Thanks for everything.
(view all replies)Thanks so much! I'm glad you like it. I think you added it to Quick Science instead of Quick Math on accident.
(view all replies)cool, but you can change the radius while it moves and it makes bumps. You /could/ change it so you type the radius in with the answer block.
I made it so you can type the radius as well. Thanks for the suggestion.
Thanks. Do you mean you can change it during designs? I did that on purpose to add to the possibilities.