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