Undoing all transformations

[Frankn]

I'm pretty sure I've seen this before but I can't find the answer... so sorry in advanced if this is a repeat question.

I'd like to remove all transformation for a given instance... so basically reverse what ever moves and rotations were done.

I can get the transformation array,

e.transformation.to_a

and i tried setting everything back to 0 bu that didn't work...

Thanks

[sdmitch]

Maybe this?

mod = Sketchup.active_model
ent = mod.entities
sel = mod.selection

cmp=sel.first
t=cmp.transformation.to_a
t[0]=1;t[1]=0;t[2]=0;#t[3]=nil
t[4]=0;t[5]=1;t[6]=0;#t[7]=nil
t[8]=0;t[9]=0;t[10]=1;#t[11]=nil
t[12]=0;t[13]=0;t[14]=0;#t[15]=nil
cmp.transformation=cmp.transformation.set! t

[Frankn]

sdmitch, just had a chance to try it out and it does work...

Thanks!

[fredo6]

Also, to reset all transformations and puts the instance g at the origin, just use

g.transformation = Geom::Transformation.new

If you have a state before some transformations are made to the instance, you can save the state with ( clone is important)
tr0 = g.transformation.clone

Then, later, you can resume this state with
g.transformation = tr0

Note that the transformation of an instance corresponding to g.transformation is always in the context of its parent.

[Frankn]

Thanks for all that info fredo... It'll certainly come in handy