# Can i draw precise sphere in perspective using illustrator?

### Question

I really need to draw ellipses and spheres in perspective so I wonder if Illustrator is set to do this kind of tasks, I tried and came up with this result:

But as you can see It's not precise and it takes a lot of time to draw ellipses in perspective, So I wonder if anyone came across a better way or maybe a better appllication for perspectiv drawing??

### Accepted Answer

Try using Illustrator's **3D Rotate** feature.

- Draw your ellipse
- Select your ellipse
- Click
`Effect > 3D > Rotate`

- Adjust the various axis and click
`OK`

The result will be your original shape with the live effect applied to it, which you can go back into and adjust. When you're happy, click `Object > Expand Appearance`

to convert your 3D shape to a path.

http://wallpapersite.com/en/knowledge-base/70647/can-i-draw-precise-sphere-in-perspective-using-illustrator-#answer-0

1

5/3/2016 4:08:00 AM

### Popular Answer

Yes its possible. But remember that the perspective projection of a sphere is actually an ellipse (see this explanation.

**Image 1**: A isometric spheres (left) projection is a circle. In a perspective that projection is actually an ellipsoid.

First find the approximate center draw a approximate sphere (tip holding space lets you move center) then rotate the sphere to cardinal direction and scale it up a bit. Takes about 2 minutes to be almost accurate once you've practiced. This is by far more accurate than trying to eyeball the settings for 3D Rotate or 3D revolve.

### Finding the projected ellipses major axis

The major axis of the ellipse is oriented towards the center of your perspective or simply the one point perspective vanishing point.

**Image 2**: The major axis of the projected ellipse

... How do i draw this? ... sorry must go again

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