BSplineSurface

BSplineSurface[array] is a graphics primitive that represents a nonuniform rational B-spline surface defined by an array of x,y,z control points.

Examples

Create a B-spline surface:

pts = Table[{i, j, Sin[i + j]}, {i, 0, 3}, {j, 0, 3}];
Graphics3D[BSplineSurface[pts]]

Please visit the official Wolfram Language Reference for more details.