Second Silly Question: Attachments

[Shrivenzale]

Sorry about this. I'm trying to load one of Greg Burch's space station building blocks onto a space shuttle (Discovery from the 'Shuttle Fleet' addon).

If I add the module as it's defined by default, it ends up sitting in the bay across-ways - the BM201 module's hatches are sticking out the sides of the shuttle while on the pad.

Now, I know that to change this I have to modify the attachment points in the BM201.cfg file. By default, they look like this:

; === Attachment specs ===
;BEGIN_ATTACHMENT
;P 0 2 0 0 1 0 1 0 0 X1
;P 0 -2 0 0 -1 0 -1 0 0 X2
;END_ATTACHMENT

I have tried tweaking each number in turn to no avail - the module: moves but doesn't rotate; vanishes entirely; gets squashed; shrinks; or renders module, shuttle and planet invisible and all I can see is stars (as in "my God, it's full of"). If someone could tell me which numbers I need to tweak to rotate the module so that it lies along the shuttle's fore-aft axis (Z?) I'd be very grateful.

Also: if this isn't the right section of the forum to be posting this sort of thing, please correct me!

 

[MJR]

I think there is a manual that talks about this. That is all I know though.

 

[Donamy]

which attatchment are you trying to rotate ? Can you show a pic ?

 

[Shrivenzale]

Yep. This is how it looks with the default config for BM201:

 

[Imagineer]

Sorry about this. I'm trying to load one of Greg Burch's space station building blocks onto a space shuttle (Discovery from the 'Shuttle Fleet' addon).

If I add the module as it's defined by default, it ends up sitting in the bay across-ways - the BM201 module's hatches are sticking out the sides of the shuttle while on the pad.

Now, I know that to change this I have to modify the attachment points in the BM201.cfg file. By default, they look like this:

; === Attachment specs ===
;BEGIN_ATTACHMENT
;P 0 2 0 0 1 0 1 0 0 X1
;P 0 -2 0 0 -1 0 -1 0 0 X2
;END_ATTACHMENT

I have tried tweaking each number in turn to no avail - the module: moves but doesn't rotate; vanishes entirely; gets squashed; shrinks; or renders module, shuttle and planet invisible and all I can see is stars (as in "my God, it's full of"). If someone could tell me which numbers I need to tweak to rotate the module so that it lies along the shuttle's fore-aft axis (Z?) I'd be very grateful.

Also: if this isn't the right section of the forum to be posting this sort of thing, please correct me!

The first thing to do is read the manual about the format of attachment point definitions. The numbers come in triples.
The first three numbers are the attachment location: X Y Z.
The second three numbers are a direction vector (unit length) which points outward from the module, also X Y Z.
The final three numbers are an orientation vector (unit length). They point to what you might call the 12 o'clock position of the attachment point.

So, to re-orient the module you need to adjust the last three numbers. In the case of BM201 the orientation vectors point along the X axis of the module. The need to point along the Z axis. So, change them to:

 ; === Attachment specs ===
;BEGIN_ATTACHMENT
;P 0 2 0    0  1 0 [B]0 0 1[/B]   X1 
;P 0 -2 0   0 -1 0 [B]0 0 -1  [/B] X2 
;END_ATTACHMENT

The remaining modules are left as an exercise.

:edit: Rotating it to the correct orientation will not guarantee that it will actually fit. From your screen shot it looks like it might be a bit too big.

 

[Shrivenzale]

So, to re-orient the module you need to adjust the last three numbers. In the case of BM201 the orientation vectors point along the X axis of the module. The need to point along the Z axis.

Thanks very much for the advice. I managed to get the module aligned properly, and with a tiny tweak on the position numbers I managed to make it sit neat in the payload bay, too - it wasn't too big, but it did sit a little bit high to begin with.

Thanks again!

 

[Opie]

I have a similar question regarding rotating attachment points

I have these parameters for an attachment of a robot arm onto a module.

DIR=(0.984,-0.275,0)
ROT=(0,0,1)

How would I rotate this attachment point 90 degrees counter-clockwise? I tried changing the ROT vectors but i cant for the life of me figure out what vector it needs to rotate to the left. Any help will be most appreciated.