Uniform sphere

[Julian]

Last year, I posted in this thread about making a sphere with a uniform CP density. I've been able to improve upon the "volleyball" sphere by using beveled edges to eliminate the dead-end splines at the corners. Here's a more or less uniform sphere with 1,352 patches (i.e., 60 CPs around the equator):

 

[attachmentid=20008]

 

[attachmentid=20009]

This primitive can be used in applications such as cloth simulation, or it can be used in conjunction with Marcel's Conform plugin (US$15.00) to simplify the geometry of an irregularly-shaped polygon model such as an asteroid or small moon.

UniformSphere_1352patch.zip

[MMZ_TimeLord]

Wow... nicely done Julian... did you write a program to generate that?

 

That would be a great addition to the 'primitives' plugin in A:M if it was.

 

Then just have it so you can specify the density of patches.

 

Really good job either way!

[Julian]

Wow... nicely done Julian... did you write a program to generate that?

No, as I mentioned in the old thread, I'm still using the Spherize plugin from Emilio Le Roux.

 

Oh, I thought of something else this can be used for: optics -- minimizing distortion in the image when the model is used as a spherical lens or mirror. I haven't tried this myself, though. Conceivably, this type of sphere can also be used as the cornea of an eyeball, but the "basketball" topology would probably be simpler.

[DanCBradbury]

wouldnt there be problems with the 3 point patches? When ever i work with them, the usually love doing their own thing, instead of forming with the patches around them.

[Gorf]

I would have thought a three-pointer surrounded by six four-pointers would be OK...?

[martin]

I would have thought a three-pointer surrounded by six four-pointers would be OK...?

People use 3-point patches all the time without problems. Just try them in your situation.

[Julian]

I've just created three variations of this model with lower patch counts: 152, 296 and 488 patches. It looks as though Porcelain helps make the meshes smoother at these resolutions, so all of the spheres included here have Porcelain embedded.

 

[attachmentid=21336]

 

[attachmentid=21337]

UniformSpheres_152_296_488.zip

[Kamikaze]

Man! I almost fogot to send a Big THANK YOU after downloading your models, They are very handy and well thought out..............

 

Mike

[Rodney]

Bump.

 

Needed to locate this.