15-462 Lecture 13: Texture Mapping

03/14/2002

15-462 Graphics I

Basic Concept

•We need to find a way to relate a 2D image to a 3D model

•That’s where texture coordinates come in

–A texture coordinate is a 2D coordinate (s,t) which maps to a location on a texture map

–Generally the texture coordinates are over the interval [0,1]

•Assign a texture coordinate to each vertex

–The texture coordinate is applied using some function which relates a spot on the texture with a vertex on the 3D model