3D Sphere in Perspective
4mo
Dippede Doodle
Hey folks!
I am recently trying to learn how to draw a sphere in 3D and perspective.
So I tried to draw a 3D Sphere using all 3 Axis (hope it will be shown in the image). Are the contour lines correct?
If so where does this point to (I have added an arrow where I guess it is pointing to and why does my brain think this is wrong - it should be left down tilted to left).
The next thing I don't understand is perspective. So this is a front view representation of sphere. But when a sphere is out of sight than distortion comes into play and a circle becomes an oval is this also correct?
And final question there is basically no two or three point perspective representation of a sphere since you can't see around edges is this also correct (I think this is where 3D is used).
Sorry for these many questions but I am confused hope you could follow and help me out solving this puzzle.
Thank you for your time and have a good one!
👉 This points out what confused me:
You need to understand how the ellipse on each axis is wrapping around the foreshortening of the sphere.
👉 This is the answer I was looking for:
You also need to understand that each ellipse is really a circle.
With a sphere, all points on its surface are equidistant from its center.
👉 My final thoughts:
I was technically correct with the assumption when a sphere is out of sight (view point) it will be disorted. However this effect is not realy noticable so we can ignore it. The ellipses of a sphere are circles even with
disortion.
👉 A little side hustle I had was to use the correct terms for 3D objects. Something like:
square = cube
rectangle = quader
triangle = pyramid
circle = sphere (well messed up with that one - it's a cylinder)
sphere = sphere
and so on. I mean you did that in primary school like me but now I have to do it in two languages I am not a pro in (english & drawing - my english is way better than my drawing). And I also was sleeping on geometry, so just for clarification.
🤌🫵🙏
I think you're confusing a sphere with a circle.With a sphere, all points on its surface are equidistant from its center. The contour you drew are correct, but they mainly show the 3-dimensional quality if the sphere. The only perspective quality of a sphere is that it looks smaller as the distance increases. A silhouette will always be a circle regardless of its orientation or position. It will never be an oval. If the object you are trying to draw is a circle or disk (say a coin or an old-time record), its orientation is important. If you move around a disk, you can get a silhouette correctly represented by your middle drawing. I hope this helps alleviate your confussion.