Segmented Circle

[billbogan052]

Hello,

Is there a good workflow for creating a circle that is divided into multiple colors? (Not a pie, but a doughnut)
Using cartesian coordinates, think in these terms...
0-89 degrees = BLUE
90-179 degrees = YELLOW
180-269 degrees = GREEN
260-359 degrees = RED

I have a workflow now, but it is cumbersome and involves other software to generate the circles. If there is a way to do this, then I can also look at varying the circle size and creating a stepped, segmented circle.

Thanks,
Bill

[LeviFiction]

You mean something like this?

My process was not fast. But it's kind of simple.

1) Create a new gradient

2) Setup the stops as follows:
Stop 1: Blue Position 0
Stop 2: Blue Position 25
Stop 3: Yellow Position 25
Stop 4: Yellow Position 50
Stop 5: Green Position 50
Stop 6: Green Position 75
Stop 7: Red Position 75
Stop 8: Red Position 100

3) Save Gradient

4) Use Radial Style gradient, center point 50h 50v

5) Set gradient as background/fill color

6) Drag out Ellipse

7) Convert Ellipse to Path

8 ) Using the pen tool select all 4 nodes of the ellipse, then use the "Duplicate & Offset" function with the offset at 0X and 0Y. This makes sure that the new contour is in the same place.

9) Use the "Contraction" option, with the X and Y at equal amounts. And shrink it to the size of the hole you want.

10) With the inner circle still selected go to Object -> Edit -> Reverse contour This will cut a hole in the ellipse

[Cassel]

I would have gone with a different flow:
- on a square image, select a custom selection that will be the top left quarter of the image, flood fill with red
- Selection - Edit selection, Mirror horizontally, Selection - Edit selection, Flood fill with Blue
- Selection - Edit selection, Mirror vertically, Selection - Edit selection, Flood fill with Yellow
- Selection - Edit selection, Mirror horizontally, Selection - Edit selection, Flood fill with Green
- deselect
Place guides, vertically and horizontally, and have the Snap to guide checked.
Select a circle as large as the outer edge of your donut.
With the right-click, move the selection toward the center where it will snap
Invert selection (Ctrl-Shift-i) and delete.
Invert again
Contract selection by the amount you want the thickness of the donut and delete

You should have a donut left with the four colors

[hartpaul]

Then convert it to a picture tube and you can get "varying the circle size and creating a stepped, segmented circle."