the question about pc open (solved)

[akaliln]

Hi everyone, I have a little confuse about pc open.

Normally we create a pc open need a current element "P" to be the query position. and then search the target file by radius.

but what if i create pc open in cvex shader builder to work with vex volume procedural in Shop. where is the current P comes from? we still need a "P" to be the query position to do searching. (plz let me know if I'm wrong thx)

if I connect pc open query pos to geo vop global parameter "P" then do the rest of part. although it still work but no idea how. and I don't know how to export the parameters to check on the spread sheet. 

 

 

Edited December 13, 2019 by akaliln

[anim]

if you bind P in cvex shader belonging to Volume Procedural it will be populated with voxel positions in the object space of the object the shader is applied to

Edited December 12, 2019 by anim

[jimeng20]

Also volume is not like points or prims, you can not just directly use spreadsheet to check the information in spread sheet. If you really need to check the P information, I would suggest create a vector field name it Position, then store the P into Position and I would scatter the points to sample the Position field by using volumesamplev.

[akaliln]

12 hours ago, anim said:

if you bind P in cvex shader belonging to Volume Procedural it will be populated with voxel positions in the object space of the object the shader is applied to

thx for your reply. now I understand how it works. problem solved! thank you.

[akaliln]

11 hours ago, jimeng20 said:

Also volume is not like points or prims, you can not just directly use spreadsheet to check the information in spread sheet. If you really need to check the P information, I would suggest create a vector field name it Position, then store the P into Position and I would scatter the points to sample the Position field by using volumesamplev.

cool! thank you. I think it could be bind out the parameter directly then check from the sop level.