Hi human-patient,
This is typically done with UV mapping.
Each polygon has a representation in this UV mesh. Each UV polygon can be seen as a frame of a certain area of the texture. The texture is placed on a normalized space, so if you exchange the image's resolution (higher or lower), the result will look the same, besides more sharp or blurry based on the resolution.
https://help.maxon.net/c4d/2023/en-us/Default.htm#html/11659.html?TocPath=BodyPaint%25C2%25A03D%257CUV%2520Edit%2520Menu%257CUV%2520Manager%257C_____4
Example
https://www.dropbox.com/s/y8iuxsy6yz0xz5q/CV4_2023_drs_23_TXuv_01.zip?dl=0
Cheers
Screen Shot 2023-02-22 at 11.17.12 AM.jpg