code: function(axis1, axis2, depth) {
              return this.extrudeInOrthonormalBasis(CSG.OrthoNormalBasis.GetCartesian(axis1, axis2), depth);
          }
docs: Extrude in a standard cartesian plane, specified by two axis identifiers. Each identifier can be one of ["X","Y","Z","-X","-Y","-Z"] The 2d x axis will map to the first given 3D axis, the 2d y axis will map to the second. See CSG.OrthoNormalBasis.GetCartesian for details.