Dropped lines in perspective

Hello . I am modeling kitchens and one thing is that when one solid enters another and not unioned (wow a new word ) then autocad does not plot the line where they intersect . Someone was looking at my drawing and commented that I didn`t have collision on but wouldn`t elaborate so I went home and searched the help for a collision command in 2006 however nothing found . Is there such a command in 2006 that prevents one solid from entering another .

Any help would be greatly appreciated .

To my knowledge there is no "collison" command in plain AutoCAD. I know what you are referring to though (where solids would meet up with each other) and I believe there is a way to force this to be represented but at the moment the way to do it has somehow left my brain. I'll think on it though and if by chance some dead brain cells revive themselves (after another cup of coffee) I'll return with a solution.

I use the following lines to check the collision of Solid1 and Solid2 for motion control.

Perhaps this idea can help you

>>

...

(command "_line" p0 p1 )

(command "")

;Kollisionstest

(command "_interfere" solid1 solid2 "" "" "_y")

(setq test (entget (entlast)))

(if (/= "LINE" (cdr (assoc 0 test)))

(progn

(setq cflag 1)

(princ "\nKollision!!")

(getstring)

)

)

...

>>

Regards

Jochen

Johnnybean, (great name)

In reality a solid object cannot "enter" another. The other object needs a void (or cavity, whatever) for the first object to "enter".

So the solution really is simple. Create a second copy of the object that is entering and subtract it from the entered object.

Ya this is what I`ve been doing . ocasionaly a filled or end panel ends up a mm into the wall and when I sey up the perspective in the viewport then I can see it and go back to model and copy wall and panel , move and do subtract , then move panel back but someone said "oh guess you didn`t have collision turned on" but I don`t know him and he didn`t elaborate.

There is no "collision" to be enabled in AutoCAD 2006. The best you could do, if you suspect overlapping solids, is run the Intersect command and see what it turns up. That's one command that is in AutoCAD 2006.

Ok thanks ReMark I`ll try that , will save me from searching for them atleast.