Per face color select

Rhino Rhino for Windows
1

Hi all,
I’ve got many surfaces, imported from STP.
they are all on same layer and have same custom color (white)
BUT
some of them are displaying with a different per face color (green here)
How do I select the green ones?
If I try _SelColor I get all of them selcted as they are all “officially” white.
where is “per face color” info shown?

Thanks!

per face color select.3dm (167.1 KB)

image
image1920×683 107 KB

2

Here is a small script that will select objects that have per-face colors:

SelObjsWPerFaceColors.py (998 Bytes)

The native Rhino command RemovePerFaceColors will remove the per-face color property of objects and return them to by layer or by object.

1 Like
3

you may need to change the Display Colour in the Properties panel

Display Colour
Display Colour942×1098 107 KB

4

Thank you @Helvetosaur,
Your scripts, together with Pascals, adds a lot to Rhino!

Is it possible select objects by per-face color as well??

5

You are looking to select objects with one or more specific per-face colors? Should be doable with a variation of the above script, I unfortunately have to go out now, I will look at it over the weekend.

6

Hi,
I do not need it now,
this file had only one per-face color so I am OK.
Thanks anyway!

I was just wondering (just in case) if it is possible to have a _SelColor behavior:
select a per-face color object , select all the others with the same per-face color.

7

You can try this one… Select one object with a per-face color you want to find, run the script. All the others having at least one face with the same per-face color will be selected. I did it this way because it’s easier to select an object with a color on it rather than trying to figure out what the color is from the color table.

Note that objets can have more than one per-face color applied. If the initial object selected has multiple per-face colors assigned, any other object that has at least one face with one of the colors will be selected.

SelObjsWSpecificPerFaceColors.py (1.4 KB)

1 Like
8

Thank you @Helvetosaur
looks working fine!

actually tweaking the file to test the script
I did found out that there is a problem with the step file or the import process:
a per-face color was assigned to individual surfaces rather than a custom color.

The surface has assigned a custom color (white) but a per-face color (green) as well.
I joined surfaces then exploded: per-face color has been assigned correctly as a custom color.
Now I can select objects by color as usual with _SelColor

Thank you for the scripts anyway!
Will be useful for sure in the future…