View Full Version : How do I build a D10?

Brian Dumas
07-14-2006, 10:35 AM
I've tried searching the database but didn't find any references to this so I hope this isn't redundant idiocy:

I'm running LW 8.0 on a Mac G5 with OS 10.3, attempts to load LW 8.5 were met with much resistance and vulgarity so I'm stuck with 8.0 for now.

I'm trying to build a ten-sided die. Seems simple enough but the Platonic Solid Tool doesn't have this shape in its menu. The SuperQuadratic Tool is stymied by the assymetrical shape, and I can't seem to find any viable workarounds to resolve this.

The standard d10 consist of two pentagon shaped wedges with the bases pressed together, easier done than said. The trouble begins when I need to rotate one wedge 36 degrees so the spline along two polys from one side falls in the center of the base of one poly on the opposite side then try to fuse these two together. I end up with extra polys that I don't need and can't delete without leaving a hole. this is further exacerbated by needing to deboss each facet on the finished die without knocking a hole in the shape.

Here are some images:
This is a top-down view of a d10

This is an oblique view of the SuperQuadratic Tool's impression of the object

This is a top-down view of the two wedges stacked and aligned

This is oblique view of the two wedges

To give everyone an idea of what I'm trying to accomplish, here is a finished d12:

I've tried using the Boolean Union command to join wedges, tried the Subtract command using cubes overlapping other solid objects, and probably hundreds of other tricks I can't recall. My last resort is laying it out as a flat object and folding it into the required shape, but that leaves me with harder edges than I would like, debossing that needs to be faked in a Photoshop skin (where the shading may not match the lighting) and several other headaches that I'd really rather avoid.

If anyone has any suggestions I would greatly appreciate it.

07-14-2006, 12:03 PM
If it doesn't need to be precisely accurate it would be very easy to build by eye. Just crete a 5 sided disk, use the make pole tool to split it into 5 triangles, translate the centre vert a suitable amount and mirror.

07-14-2006, 12:51 PM
Create a Ball with 5 Sides and 2 Segments :).
Has exact the dimensions of a D10.

cut / past one half of the ball.
rotate the pasted half 36.
Subdivide ("D") the object (both halfs). Now you have additional points in the middle.
Weld the new points from the middle to the outer points.
Now select 4 triangles from one side and merge the polygons (^z). Proceed with the other 9 Sides.
Copy your dice to a new layer, set the first layer as background (for guiding) and move the outer points int perspective view in wireframe mode so they align to a flat plane but keep their shape (you will see as you there).
On the nearlyx finished dice use the "Rounder" (Multiply) so you get the desired result.

07-14-2006, 01:01 PM
I'm not sure is this what you need, but it has 10 sides and it looks like a dice.

Dave Jerrard
07-17-2006, 10:00 AM
Make a square in the front view, rotate 90 degrees so it's a diamond. Delete a point on one side of the X axis so you're left with a triangle. Lathe this with five sides. Now, cut the top five polygons off, paste them into another layer, and rotate them on the Y axis 36 degrees. Now, move them down until they completely pass through the polygons in the first layer. Once they do, Boolean - Add them together. Select the band of polygons in the middle & delete them. There's your die. Here's an object file using layers to show each step.

Make the box
Rotate the box
Delete a point
Lathe with five sides
Cut the top off
Paste it in another layer
Rotate it 36 degrees
Move it down so it completely intersects the bottom half & Boolean-Add
Select geometry in the middle and delete.

In layer ten I did a couple edge bevels and a small regular bevel with no shift to control the smoothing. You could boolean or drill some numbers into the die before this if you want to.

He Who Misses His Old Dice Now.

Marvin Miller
07-19-2006, 03:07 PM
This post makes me want to dig up my old dice and write a tutorial on how to recreate them in LightWave. (And I might just do that! The one I have for 6-sided dice needs an update anyways.)