New mapping overrides channel 1

Rhino
,
1

When enable multiple mapping channels, initially, everything works well. Selecting the “Apply planar mapping” button asks you for a rectangle, then UV/UVW, and then asks for channel number.

Coming back to add yet another channel later (like after closing Rhino) becomes an issue. Selecting the “Apply planar mapping” button asks you for a rectangle, then UV/UVW, and then overrides channel 1. I have to manually renumber the other channels to protect them.

This has been bugging me for a while.

2

Hi Thomas - thanks, I’ll investigate.

hmm- I am not seeing this - I am asked for the mapping channel every time. Can you please run SystemInfo in Rhino and copy/paste the results here?

-Pascal

3

Did you try saving, closing Rhino, and loading the file again. For me it works if the mapping is created and edited in the same session, but fails later.

4

Hi Thomas - yes, saved, closed, closed Rhino, reopened and added new mapping.

Are you rendering in the Rhino renderer?

-Pascal

5

Here is a simplified file. Can you apply a third planar mapping to this cylinder ?
(When I do it, it always replaces channel 1)

Sysinfo.txt (2.5 KB)
Mapping.3dm (32.7 KB)

6

Yep…
image

Ahhh. V7, sorry, I missed that detail - let me check 7

In 7 I see what you report…

-Pascal

1 Like
7

This is indeed fixed in Rhino 8.

In Rhino 7 you should be able to create past 2 mappings by clicking first in the mappings list box to make sure you have no mapping selected.

1 Like
8

That would be great, but my V7 doesn’t do that either.
(Good to hear V8 is fixed on this)

9

I don’t kno what it is with this particular object but a way to get around it and still be able to redo the same mapping:

  1. for each channel show mapping widget and add a rectangle using the mapping widget ends, then hide the mapping widget
  2. delete both mappings
  3. redo the mappings

Here recording I made of the above steps using your Mapping.3dm file

10

It was a new file. No baggage.

Doesn’t solve. It works only within that session. Once you save and reopen it goes back to overriding channel 1. What I do is change the mapping from channel to a temp number. Let Rhino create a mapping at 1 and then I swap the numbers.

11

Ah, the saving and reopening indeed has it fall apart in Rhino 7.

Well, it is fixed in Rhino 8.