Mitsuba doesn't like ScalarPoint3d being passed into ScalarTransform4d

[AnsonSavage]

Hello!

Whenever I try to create a scalar transform like this:

point = mi.ScalarPoint3d([6.187859, 5.546123, 5.089371])
print(type(point))
translation = mi.ScalarTransform4d.translate(point)
print(type(translation))

I get an error telling me that it only supports mitsuba.ScalarPoint3d inputs.

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
Cell In[9], line 26
     24 point = mi.ScalarPoint3d([6.187859, 5.546123, 5.089371])
     25 print(type(point))
---> 26 translation = mi.ScalarTransform4d.translate(point)
     27 print(type(translation))
     28 import sys; sys.exit()

TypeError: translate(): incompatible function arguments. The following argument types are supported:
    1. translate(self, v: mitsuba.ScalarPoint3d) -> mitsuba.ScalarTransform4d

Invoked with types: mitsuba.ScalarPoint3d

I've verified that the types are correct. I'm also experiencing this issue with mi.ScalarPoint3f and mi.ScalarTransform4f. I'm experiencing this with both cuda_ad_rgb and llvm_ad_rgb variants. Any thoughts?

Thanks!

[AnsonSavage]

Huh, oddly enough, o3-mini helped me fix it. This is weird because I certainly wasn't having this issue before.

This is basically what it said:

You're calling an instance method as if it were static. Instead of:

translation = mi.ScalarTransform4d.translate(point)

do:

translation = mi.ScalarTransform4d().translate(point)

This ensures that the method’s first argument (self) is a valid transform.

[njroussel]

For future reference:

We try our best to keep track of such changes in our release notes. For this change specifically, it actually is part of a longer list of breaking changes that we've documented here: https://mitsuba.readthedocs.io/en/stable/porting_3_6.html#removal-of-static-mi-transform-functions.