topic Re: question re solid element operations in Project data & BIM

question re solid element operations

Anonymous — Tue, 30 May 2023 10:52:28 GMT

I am a new user and I am having a little trouble with solid element operations, particularly subtraction.

after performing a subtraction the operater element remains visible and although it has been subtracted from the target, the target will return to its original shape if the operator is deleted.

I have worked around this by placing the operator element on a different layer and hiding it to display only the shape that is created by the subtraction, I imagine/hope there is a better way...can anyone tell what it is?

Thanks

Re: question re solid element operations

Karl Ottenstein — Mon, 25 Aug 2008 02:05:02 GMT

Hi Rohan,

You're doing things correctly. Solid Element Ops ('booleans') are dynamic, so if an operator is moved, the result is moved. Thus, the only way to see the result of a pure subtraction is by having the cutting element be on a special layer reserved for such things.

When roofs are subtracted from walls with upwards extrusion, for example, the operators (roofs) don't have to be hidden since it is the trimming that is desired. But, with a pure subtraction, you're right: you won't see anything unless you hide the operator. Deleting the operator, deletes the operation as you've seen.

If you make the layer for 'hidden cutting objects' display as wireframe (the wireframe column in the Layer Settings dialog, then you can see the result even as you still see the shape of the cutter and move it about if necessary.

Cheers,
Karl

Re: question re solid element operations

Anonymous — Mon, 25 Aug 2008 09:04:18 GMT

Thanks Karl, the wire frame tip was very useful!

Rohan