[Plugin] Quadrilateralizer v1.1 20110215

TIG

TIG (c) 2011
All Rights Reserved.
THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES,INCLUDING,WITHOUT LIMITATION,THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

Script: Quadrilateralizer.rb

Usage:
Select faces. Note that other entity-types in the selection are ignored.
Run 'Quadrilateralizer' from the 'Plugins' menu.
If there are no faces in the selection there is an error-message, it exits.
If all selected faces are already quads then you are asked if you want to
split them further: 'Yes' to redivide selected quad faces or No' to abort.
If the selected faces are not equivalent to 'all connected faces' then you
are warned: 'Yes' to continue, 'No' to abort. It is recommended that all
connected faces are processed together [treble-click a face to select all]
to ensure that all connected faces become quadrilaterals; otherwise later
processing of these non-quad faces could result in the connected quads
being made into non-quads, or if all connected faces were selected the
non-quads would split but the previously made quads will be split again -
it could get messy - this might be what is required... but usually
processing all connected at once is the best method.
All selected faces are now split into quadrilaterals ['quads'].
Note that any preexisting quads in the selection will also be split
because splitting any adjacent non-quads will force these existing quads
into non-quads anyway.
UV texture mapping etc is kept.
It is one step undo-able.
The vertices of these quad faces can be adjusted with the Move tool...

Donations: By PayPal.com to info @ revitrev.org

Version:
1.0 20110214 First Release.
1.1 20110215 More info and percentage progress reported in Status Bar.

Put into the Plugins folder and restart Sketchup...

Gaieus

OK, first to download so first to thank. I know why Pete asked for it...

Will it move vertices slightly to create quads from non co-planar tris for instance (or does it only subdivide)?

solo

Sweet!! cannot wait to give it a run.

Thanks a bunch.

Gaieus

Some quads are created from tris in a way that they have co-linear edges. This may not be an issue in many apps but SDS2's smooth tool cannot handle these, Pete.

TIG: still great tool, thanks!

TIG

@gaieus said:

Some quads are created from tris in a way that they have co-linear edges. This may not be an issue in many apps but SDS2's smooth tool cannot handle these, Pete.
TIG: still great tool, thanks!

Most quads will not have co-linear sides [although thin slivers of triangles do approach co-linearity] - but those that do you can manually Move a vertex as desired.
The subdivision can produce unoptimized quads anyway that would benefit from some adjustments to some vertex locations...

This is only v1.0, I only starting thinking about writing it a couple of hours ago

Any feedback or suggestions on improvements welcomed...

chloesdad

Thank you very much TIG.

TIG

I can envisage another tool to optimize selected coplanar quads...
It tests a faces for their vertices' 'concave-ness'/co-linearity and adjusts the concave/linear vertex location until it is just convex... I suspect this might involve a lot of tail-chasing as one faces concave vertex could be its neighbor's convex vertex

Alternatively if any of the Quadrilateralized faces have co-linear or concave vertices select all and Quadrilateralize them a second time - that should fix them - although the mesh will then be much finer BUT there's no such thing as as a free lunch...

CAntonis

Thanks so much TIG!
One question though: Is this gonna help exporting a model to other modelers with greater detail, is it just because quad faced geometry is better or both?
Downloaded already and I ll be checking for updates!!!!
Again THANKS A BOUNCH!

Didier Bur

Hi TIG,

When translating into french, I came across this (line 82):

return nil if UI.messagebox("Quadrilateralizer;\n\nThe Selected Faces are NOT\nALL of the Connected Faces.\nDo you want to Continue ?",MB_YESNO)==7

Isn't this message confusing or wrong ?

TIG

@didier bur said:

Hi TIG,

When translating into french, I came across this (line 82):

return nil if UI.messagebox("Quadrilateralizer;\n\nThe Selected Faces are NOT\nALL of the Connected Faces.\nDo you want to Continue ?",MB_YESNO)==7

Isn't this message confusing or wrong ?

The selected-faces are not ALL of the connected-faces.
Do you want to continue?

Les choisir-faces ne sont pas tous les relier-faces.
Voulez-vous continuer ?

Didier Bur

Les faces choisies ne font PAS TOUTES partie des faces connectées

TIG

@didier bur said:

Les faces choisies ne font PAS TOUTES partie des faces connectées

I couldn't have put it better myself!
Je n'aurais pas pu mieux dire moi-même!

Krisidious

you Rock Tig...

Ben Ritter

TIG, thank you.

EarthMover

Thanks bro!

Rich O Brien

Thanks TIG....any chance of a progress bar?

TIG

Here's v1.1 http://forums.sketchucation.com/viewtopic.php?p=309120#p309120
More info and percentage progress now reported in the Status Bar.

Rich O Brien

That was quick

TIG

Sorry it took so long I was at the corner-shop buying some milk when you posted

Rich O Brien

Now that you're around and idle, how about this