So basically, it's an issue about converting 4x4 Matrix to Separate TRS. In solaris, the default transformation generated by houdini was in the form of the 4x4 Matrix. Whichi looks like this
matrix4d xformOp:transform:xform = ( (1, 0, 0, 0), (0, 1, 0, 0), (0, 0, 1, 0), (0, 0, 0, 1) )
uniform token[] xformOpOrder = ["xformOp:transform:xform"]
quatf xformOp:orient = (1, 0, 0, 0) float3
xformOp:scale = (1, 1, 1)
double3 xformOp:translate = (0, 0, 0)
uniform token[] xformOpOrder = ["xformOp:translate", "xformOp:orient", "xformOp:scale"]
We have to convert them inside houdini. After trying some python scripts, i cannot get a decent result. And here are two issues that I met
1 . Not all Xform will generate a default transform
2 . After converting to separate TRS, the original 4x4 matrix still there, though it won't affect the transform
i have also attached a hip file. So you could replicate it.
For issue 1,
If you inspect node configurelayer3, check out the layer and you will notice that prim /World/body has no default transformation. /Wolrd has transformation seems to be the SOP create did some magic there, and /World/part_00 has transformation because i manually added a transform node. So, does it mean for every Xfrom i have to manually add a transform node to give them a default transformation?
For issue 2, the python script do convert the matrix to separate TRS, but the original still there
Any suggestion or help would be appreciate. I think there should be a more elegant way to achieve this.