I was able to make something similar using blends and a bit of trial and error.
For the innermost circle, I made a blend between two identical dots, with 5 steps, then replaced the spine with a circle that had one cut. (the cut makes the two end dots land on top of each other).
Copy this, and paste it in front. Then select just the spine and enlarge it from the center, playing with the size until it looks right. (select the spine, and not the whole blend, or the dots will enlarge also).
Then select this blend and change the steps to 11. Continue in this manner until you have the pattern the size you want it.
There may be a way to script this, or a shortcut to do it faster, but maybe this will get you started.
Here's another way.
- Make the cirlce in the center. With the Ellipse tool (L) create a perfect circle by holding Shift while dragging.
- Make copies of it on a straight horizontal line spaced with the desired distance between each circle of circles. Use the Selection tool (V) to drag the circle horizontally while holding Shift to constrain and Alt to copy. Press Ctrl + D to make additional copies as many times as the number of circles you want.
- Select all circles and in the transform panel enter 30° for Rotation. If you want the first circle to stay in place before rotation select the bottom left corner of the reference symbol in the Transform panel
- Select only the second circle from the center, pick the Rotate tool (R), enable the Smart Guides (Ctrl/Cmd + U), find the center of the center circle and click it while holding Alt. This will show the Rotate dialog. For angle type 360/6 and press the Copy button. Press Ctrl + D four more times to complete the first circle of circles.
Repeat the same for each of the following circles by dividing in the Rotate dialog 360° by 6 times more for each circle of circles, for example 360/12, 360/18, 360/24, and etc.
when repeating the last transformation Ctrl + D to create additional copies, you you can just hold the Ctrl + D buttons down (as a oppose to pressing it many times) until the copies appear to be approaching the desired number and then press Ctr + D or undo a few more times to get the desired number of copies.
When you have decided the size W (= H) of the innermost circle (presuming 6 dots on it), another way is to:
1) Create the central dot with the size w,
2) With it selected, in the Brushes palette flyout tick New Brush, then tick New Scatter Brush, and set the Spacing to 52.36 * W/w,
3) Create the innermost circle (with the size W), cut it at the top, and apply the Scatter Brush,
4) Create copies of the innermost circle with increasing sizes (2*W, 3*W, 4*W, etc) until you have them all..
You may also create all the circles first, select them all, and apply the brush.
For the innermost circle shown in the link, W is about 4*w (four times the size of the dot).
I use the Polar Grid to make my coincentric circles evenly spaced
I stroked the ircle paths do it all with one click
I then gave it a dash line Round Caps a dash of and a gap 11.5 in this case with a stroke of 7
The center dot has to be put in you can make a straight path stroked and dashedas wihthe circles and flatten the trannsparency to get your center dot and easily align it to the center.
You do have to fool witht he gap dimension till it all works.
With the dash solution suggested by Wade (where the dash is set to 0), the gap should be set to 0.5236 * W, where W is the width of the innermost circle.
As it appears, it is closely related to the Scatter Brush Spacing value in post #5.
Listen i cant thank you guys enough, i have been looking at this for a couple of weeks now - but not having any prior knowledge i didnt really know what i was looking for. My background is photoshop so i've had to move across to Illustator just to complete this task.
I have a few different options now, but i think i will go with Wade_Zimmerman's advice. I'm a complete newbie with Ilustrator so i dont actually understand what much of what you guys are sayin, its completely different toolsets to what im used to, but now i have something to work with i will look up all the things you have mentioned and learn some about Illustrator at the same time. I might be back asking.........erm what does that mean, but ill have a go.
Thanks again everyone!
Hi Wade, the first image (complete circle) is exactly what im trying to create, maybe with the dots slightly bigger and gaps ever so slighlty smaller - but thanks again for your advice and tips, im going to give this a go this evening.
Thank you very much!
With the dash way, the gaps are completely independent of the dot size (because the dash size is zero).
To get 6 dots in the innermost circle, the gap should be set to 0.5236 * W, where W is the width of the innermost circle, as mentioned in (the edited) post #9, no need to adjust or try and fail.
The 0.5236 (or more accurately 0.523598776) is simply PI/6.
To get the right gap for another number of dots in the first circle, just divide PI by that number.
PI = 3.14159 265 etc.
Remeber the dot in the center is creaated manuall and posuition manully as well.
I'll post a video.
Thge problem that jacob refers to is no longer an issue with CS 5 and later as there is an option to space the dashes to a even out along the path.
here is a video:
Ahh mr wade, a video tutorial would be very helpful, I do find it easier to watch and learn rather than read. I'll still have a go though, unfortunately this evening has been taken over by a wide awake baby and photo editing.
Sorry, i was reading your last post on my phone and missed the link to the video. I have just found a 10 minute window, followed your tutorial and hey presto i have exactly what i need! I changed the segments to 13 and messed around with the spacing etc, and i have exactly what i want, the circles eventually fell in line perfectly.
I cant thank you enough, this has seriouly been on my mind for a while and you have made it so easy to do - i dont know why i never thought to look on an Adobe forum? But now i know!
All i need to do now is convert this to a Vector so i can blow the image up to 30x30 inch. Is that possible? I havent worked with Vectors before but im under the impression you can use a vector at any size and still have sharp edges?
I also need to colour in some of the dots, would i import it into Photoshop or stick in Illustrator?
All i need to do now is convert this to a Vector
It is vector artwork.
I also need to colour in some of the dots,
You may try to select the path(s) in question and Object>Expand. Depending on version, you may get what you need.
If you go the Scatter Brush way, or one of the other ways suggested, it is pretty straightforward. With the Scatter Brush, you may select the path(s) in question and Object>Expand Appearance and get independent paths, one for each dot.
What you want to do is expand the art and turn it into a live paintt group the you can jus use the live paint bucket to pour the color over as many dots as you wish. then change the color and pour the next color over as many that have to be that color.
The live Paint group way is probably better than the scatter brush approach.
Here is another video
also if you do not wish to live paint then simply take the lasso tool select a group of dots and the select a color and they will fill in.
Thanks kind people.
By the time i had read this i had already exported as an eps file into photpshop and used the paint bucket to paint them individually (yes this took a long time) I wanted each circle to be a different colour. But i have more of these to do and will look at using one of the above methods to speed up the process in Illustrator.
And thanks Zimmerman for the videos! I found them extremely helpful and made the learning process very easy.
Thanks again to those that helped!