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boolean Q

jyarddog

jyarddog

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Take a 20x20x20 box. Create tool (a tube). Punch a hole through the box all the way.

Now repeat this but at right angles to the hole you just created. I swear I did this a while back. Now I can't get the second hole. Warmingham tried and couldn't. Is there something we are missing?

Pizza and all the beer you can drink if you can solve this one. :) Bob
 
Why specifically a tube? If you wanted just a hole, then wouldn't a cylinder work?
EDIT: Oops, that's the trouble with always clicking on 'new posts', I didn't realise this was in the FSDS forum -- I'm thinking in GMAX...
 
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jyarddog said:
I guess Gmax calls it a cylinder where FSDS calls it a tube. Same puppy.
Click to expand...

Nope. A 'cylinder' in Max/Gmax is topographically distinguished because it acts like a "solid," meaning there is no "interior." It is a closed vessel.

A "tube" is topographically distinguished because it is "hollow," meaning that there is an inner radius of vertices.

Even a "tube" with 1m outer radius and 0m inner radius will have vertices in the geometric center of the axis.
 
Interesting difference. Nevertheless I do not see any primitive called cylinder. FSDS only has 'tube'. My original question remains. Bob
 
We luddites use "tubes" ...... (which are cylinders in the Dark Side)

I repeated the experiment and had no problem.

Another thing you can do, if you just want to "punch holes" is to create your first tube (partname: tool) of a three sections. delete the middle polygons. Copy./paste and rotate/move the new part (tool.1) to where you want the second set of "holes" to be. Now, select BOTH tool parts, (tool and tool.1), JOIN the parts together, and make sure the now part is named "tool",

Seect the tool and box, CTRL-B, and Hopefully you should have all your holes drilled.

As long as the tool part does not intersect itself, you can actually create several "tool" parts, join all the separate parts (gmaxspeak: attach multiple), and create one boolean operation. I've used it to create, say a row of windows.

Unfortunately, the side effect is that you have a lot of point cleanup to do.
 
Excellent idea. Will try it. I can clean up points with 'clean orphaned points'? Ludites rules! :) Bob
 
jyarddog said:
Excellent idea. Will try it. I can clean up points with 'clean orphaned points'? Ludites rules! :) Bob
Click to expand...

Alas, no. "Clean orphaned points" is for when you delete polygons and leave little points all over the place, by themselves, attached to nothing.

Boolean operations in FSDS are really 'dirty' affairs, attempted usually by only the hardiest souls, who take masochistic pride in spotting groups of unnecessary points close together, deleting them, and creating fresh polygons ... Some have been known to port the part over to gmax, perform shape merge or other operations on them and return them to FSDS. The creativeness of the FSDS modeller is shown in the many ways we toil to avoid booleans... :)
 
FelixFFDS said:
The creativeness of the FSDS modeller is shown in the many ways we toil to avoid booleans... :)
Click to expand...

...all of which could be avoided entirely by embracing the Dark Side, Luke...

Resistance is futile...

Oops! Wrong movie... :yikes:
 
n4gix said:
...all of which could be avoided entirely by embracing the Dark Side, Luke...

Resistance is futile...

Oops! Wrong movie... :yikes:
Click to expand...

Even when dabbling in the Dark Arts I scrupulously avoid booleans! (Shape Merge is more convenient most of the time)
 
Bill Leaming.... I wonder if I've ever used any of your libraries?.... If they have been uploaded. Anyway... souds familiar.

Felix- I have no idea what shape model is. I need more time to study this stuff. But then, my hummie-do list is too long. I finsh 3 items, 4 are added! But then no one else has this problem, right? :) Bob
 
Dark Side indeed! But I do like dark chocolate!
Here is a pic Bob, of a box with 4 holes all booleaned in FSDS of course. I should really have put your bell in but I put a blue sphere instead.
Made with a box and booleaned once.
Then copy and paste and rotate.
I had to flip some of the polygons and haven't quite finished it yet as you can see but that is a minor problem.
I sent you the fsc file in an email.

John aka warmingham
 
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