Stuff I should run.

Make Equilateral triangles?

Points within each square.

Oops!

Something weird, something wonderful...

Push out the border of some shape from a triangle fan?

Resolution of 10 px

Points within each square.

Oops!

I have a double sided 2D grid of squares with four corner vertices and four edges. I find the points within the radius and build up two hemispheres with polygons within the radius, XY and an assumed Z coordinate.

This is all well and good, but I should probably go back to dividing a sinusoid into diamonds and triangle pairs and then group them into subdivided quad/triangle pair corners. What I was doing with my comparable area rows of quads within a sinusoid is also not a bad idea, for that survey setting I was working on all those years ago...

Within radius

Points within each square.

Oops!

 So I found my midpoints between high and low points.

Find Midpoints

Points within each square.

Oops!

Draw polygons

Points within each square.

Oops!

Draw some polygons inside a grid. The square has four corners and then we also want to select some midpoints.

Red and black dots

Pick three points to make a triangle

Oops!

So, what was I planning to do, again?

So I worked on the procedural grid thing and it starts with galactic XYZ, or I did, and I gave it a seed to get me lost in the void; random gx, gy and gz. You then get a PR# from position, and check to see if there's a star or something there to locate up to half a ly plus or minus XYZ.

When I get to my planet, I'm looking to see how far the point in my grid is from the surface of the planet and looking at all of the edges to the three points next in the grid. We connect all these edge points to build triangles.

Seed is 73153

Pick three points to make a triangle

Oops!

 Do a 3D grid  based on PR#s from a seed; 73153, for example. A grid of points in interstellar space where I derive a PR# from the current point as we move through the grid, where we first ask if there's a star, then where it is up to half a cell in or out, up or down, etc. Then we find out mass, age, luminosity, metals, and everything else. 

I can use the seed to generate a location in some Galaxy, plus or minus a thousand light years Z in the galactic disk, then a radius and angle to get an X and Y. The Galaxy is like ours, about a hundred thousand light years across. Get the square root of the PR# times 50K light years for radius, the a random angle and the depth within the disk. The remainder of three square root of 73153 is .468112723, the square root times 50K is 34209.38186 ly, remainder of square root of 468.112723 is .634912807 times 2 pi is 1.997779003, X is cos(1.997779003) times radius of 34209.38186 ly is something I'll have to plug into some JavaScript in a page. Y is sin(1.997779003) times radius, also in the page. A Z depth of -565 ly from .217311654. Use the XYZ to build a sector 52 ly across, from -26 to 26 around that XYZ.