Building a voxel sphere?

sixteenbits

I'm trying to find an easy way to make a voxel sphere. Basically it needs to look like this, ideally solid rather than hollow: http://www.plotz.co.uk/_gfx/voxel_sphere_1.png

I'm using Maya? Any ideas?

adam213

I'm looking for a simple way to create a solid voxel sphere in Maya—something that looks like this: https://minecraftcirclesgenerator.com/ . Any suggestions?

Klunk

isn't it just compute a grid of points (center of the voxel) if the point is inside the sphere (it's distance from the center is less than the radius) create the voxel else don't .

poopipe

Yes

Pretty simple for a sphere.  I imagine a robot could probably generate some Maya python for it 

It gets more complex if you need it to align with a world grid.

Can MASH do it?

Noren

Not a Maya user, but some particle systems can do this pretty much out of the box, so Bifrost, perhaps?

Klunk

some maxscript may help you do the same in maya

fn voxel_sphere radius segs =
(
	size = 2 * radius/segs;
	for h = 1 to segs do -- height (z)
		for w = 1 to segs do -- width (x)
			for l = 1 to segs do -- length (y)
			(	
-- compute the grid point
				
				pos = [-radius + ((w - 1) * size), -radius + ((l - 1) * size), -radius + ((h - 1) * size)];
				
-- in sphere test (also a culling spherical test to stop max chugging like puffing billy) 				
				
				if (length pos) < radius and (length pos) >= radius - size then
				(
					box width:size length:size height:size pos:(pos + [0,0,-size * 0.5]) wirecolor:blue;
				)
			)	
 
)	
 
delete geometry
voxel_sphere 10.0 30

result