I have a question about a texture expression in Houdini that I don't understand.

The image is of a similar object created in 3dsmax and Houdini.
The image is of a circle shape that is created by assigning a noise texture to a flat surface, bending it, and moving it toward the center.
However, the number of polygons is quite different between the two, and Houdini uses Point Color, which results in a huge polygon count.

Therefore, I wanted to express this in Houdini with textures,
I tried to do this in Houdini, but it didn't work.
The second image is a Houdini setting, but the UV should be expanded to be a circle in relation to the bent circle. However, I could not figure out the cause of the parallel projection.
I was wondering if it is possible to use material settings instead of Point Color to express this in the same way as in 3dsmax?

Thanks for taking a look.