Maya what is uv

UVs pronounced U-VEEZ are two-dimensional texture coordinates that reside with the vertex component information for polygonal and subdivision surface meshes. UVs exist to define a two-dimensional texture coordinate system, called UV texture space. UV texture space uses the letters U and V to indicate the axes in 2D. UV texture space facilitates the placement of image texture maps on a 3D surface.

UVs are essential in that they provide the connection between the surface mesh and how the image texture gets mapped onto the surface mesh. That is, UVs act as marker points that control which points pixels on the texture map correspond to which points vertices on the mesh. A basic need for every graphic designer who wants to picturise his 3D imagination.

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UVs are essential in that they provide the connection between the surface mesh and how the image texture gets mapped onto the surface mesh.

That is, UVs act as marker points that control which points pixels on the texture map correspond to which points vertices on the mesh. Textures applied to polygon or subdivision surfaces that do not possess UV texture coordinates will not render.

In addition, the location of the UV texture coordinates do not automatically update when you edit a surface mesh. In most cases, you map and arrange UVs after you have completed your modeling and before you assign textures to the model. Otherwise, changing the model will create a mismatch between the model and the UVs, and affect how any textures appear on the model. Understanding the concept of UVs and how to map them to a surface, and subsequently lay them out accurately is essential for producing textures on polygonal and subdivision surfaces when working in Maya.

Understanding how UVs work is also important when you need to paint textures, fur, or hair onto a 3D model. For NURBS surface types, each surface mesh is defined as a four-sided square or rectangular patch that has specific U and V directions.

For NURBS surface types the texture coordinates UVs that control the placement of a texture exist by default and are implicitly connected to the control vertices.