UV Tangent, Pos etc

UV Tangent

uv tangent can be used for some force for POP or DOP

Set uv

• the basic case of starting from primitive, add UVTexture and set Texture Type Rows & Columns(object type should be Mesh or NURBS)

convert the object to Polygon by Convert unless it is polygon.

Add PolyFrame

• set Style = Texture Coordinate
• check Bitangent Name to set tangentv also.
• This Node creates tangentu and tangentv attribute at vertex level.

Add AttribPromote to convert the uvtangent to Points

• just set tangentu and tangentv and convert them from Vertex to Point as Average as you know!

Getting Closest UV position

you need at least 3 attribute

U parameter from prim pointdist( opinputpath(".",0) , $PT , "../null1" , -1 , 1 )

V parameter from prim pointdist( opinputpath(".",0) , $PT , "../null1" , -1 , 2 )

Primitive Number pointdist( opinputpath(".",0) , $PT , "../null1" , -1 , 3 )

add Primitive Attribute inside VOP to get Position(able to get other attr) info

• And then, connect attributes you make to Prim, u, v.
• Geometry might be op:`opinputpath("..",1) as usual.
• set Attribute("P" if you want position data) you want which will be output.