topic Re: Problems creating user mesh property (masterclass tutorial) in Bifrost Forum

Problems creating user mesh property (masterclass tutorial)

Anonymous — Tue, 11 Aug 2020 19:52:44 GMT

Hey All-

Having problems creating a mesh user property while following the masterclass tutorial video. I have attached an image displaying my network. You can see I add a property to the mesh called "relative_point_pos" and a watchpoint shows that there is data entering the set_geo_property but when I try to get the property immediately after another watchpoint shows there is no data. I have tried setting a variety of data types but no luck. Any thoughts?

Thanks,

Rick

Re: Problems creating user mesh property (masterclass tutorial)

Anonymous — Tue, 11 Aug 2020 21:46:33 GMT

Following up on this. The type wants to be array<Math::double3> when getting and setting values in get_geo_property and set_geo_property for my data. There is no way to set that type through the node UI. The only way I was able to solve this was to pipe the data into the "type" port and let the node figure it out.

Re: Problems creating user mesh property (masterclass tutorial)

Anonymous — Tue, 11 Aug 2020 22:01:31 GMT

Sorry,not quite correct (and this is driving me crazy). See attached images. I was able to set the data type as array<Math::float3> earlier in my tree which is selectable as a type in get/set nodes. Notice that in both instances Bifrost sees the data as float3 but only the version with the connected array to "type" passes any values.

Re: Problems creating user mesh property (masterclass tutorial)

morten.bojsen-hansen — Wed, 12 Aug 2020 07:45:14 GMT

Can you share your scene? Then I can have a look. You need to be sure that both types are set to array<Math::float3>. You can see the type by middle-clicking on the port.

Re: Problems creating user mesh property (masterclass tutorial)

Anonymous — Wed, 12 Aug 2020 16:47:41 GMT

The type is set to array<math::Float3>but for some reason wants a connection to determine the type. I have shared my workfile. In the Bifrost graph editor under the tab for "drive_meshes_with_face_points" there is a node called "get geo relative point pos" that has an input into its type plug and a watchpoint after the node. Notice that when disconnecting the plug there is no longer any data in the watchpoint even though the type is still correct. Thanks.

Having troubles attaching a scene file. Any hints? Getting this error-

Correct the highlighted errors and try again.

The attachment's bifrost_tut.mb content type (application/octet-stream) does not match its file extension and has been removed.

Re: Problems creating user mesh property (masterclass tutorial)

Anonymous — Wed, 12 Aug 2020 16:53:13 GMT

Looks like I need to zip the scene file first....

Re: Problems creating user mesh property (masterclass tutorial)

syracoj — Wed, 12 Aug 2020 20:25:43 GMT

I recreated new set and get geo_prop nodes and it seems to be working now.

When I turned on the display of the node type (pressing t on the keyboard) it revealed the set and get nodes as type compound. They should have revealed that they were of type set_geo_property and get_geo_property compound nodes.

Re: Problems creating user mesh property (masterclass tutorial)

Anonymous — Thu, 13 Aug 2020 16:56:23 GMT

I had probably set the get/set nodes to editable to see if I could debug so they were showing up as compound. Unfortunately replacing those nodes does not fix my problem. I have a feeling it might be might a Maya 2019 thing. IT owns the install on my machine and will get them to version up to 2020 to see if that fixes it.

Re: Problems creating user mesh property (masterclass tutorial)

syracoj — Thu, 13 Aug 2020 17:29:14 GMT

which version of bifrost and RPOA are you using again? Is this the latest?

Re: Problems creating user mesh property (masterclass tutorial)

jonah.friedman — Thu, 13 Aug 2020 18:13:41 GMT

This graph looks correct to me. I think maybe the issue is that without a connection to the output, watchpoints don't actually work. Your data connection there is going to the out port of a compound called "make disjoint mesh", which is not necessarily being pulled.

Here's a workaround - assuming the object connection there is being pulled. The set property is a temp node just to ensure the data is pulled. Another workaround is to use dump_object to put it into a text file.

Re: Problems creating user mesh property (masterclass tutorial)

Anonymous — Thu, 13 Aug 2020 19:01:19 GMT

This worked for me. Looking further downstream the data was getting propagated. That watchpoint was not being updated. Thanks