Solids

beginner

Hi TIG,
It was just a comment...
Your map location is close to Palmer Lake mentioned by kallen - nothing else.

PS. kallen there is a SketchUp Basecamp 15-17/10/2012 in Boulder.
http://sketchupbasecamp2012.eventbrite.com/

TIG

We'll ALL meet up in Boulder...

Gaieus

This: http://forums.sketchucation.com/viewforum.php?f=366

And a whole lot of other folks from here will be there.

(Too many beers)

kallen

If I make a rectangle and extrude it into a cube then that should be a valid solid right?

pbacot

Yes, but in SU you need to make it a group or component for it to be recognized as a solid.

TIG

@kallen said:

If I make a rectangle and extrude it into a cube then that should be a valid solid right?
ONLY IF you them make that geometry into a group or a component == then you are correct. Pushpulling almost any form should result in a 'solid' - if it's already a lone face or the object is already a solid: unless you hold down Ctrl to leave a potential internal face in an existing form, or you work on a lone face which is facing in the direction of the pull in which case the 'bottom' face will be omitted in the new form...

To test if a 3d group/component-instance is a 'solid' you just need to select it and get 'Entity Info' [context-menu or Edit menu], the top bar of that dialog includes the word 'Solid' IF it is a solid.
To see the difference make a lone rectangle into a group too; the one says it is a 'Group' the other 'box' form says it is a 'Solid Group' !

As has been said before... a manifold 'solid' is simply a group or component-instance that contains just faces and edges, and every one of those edges must have exactly two faces - so that means - no faceless edges, no holes or flaps that would leave an edge with only one face, no 'internal partition faces' which would mean that some edges will have three or more faces, no shapes 'touching' along an edge which would mean that the edge has four faces... and also no nested groups/instances [even if they are themselves solids!] and so on...

kallen

Ahhhhhh, I forgot about the make a component thing. Left Sketchup for a month and forget everything!