COMSOL Multiphysics™

loft
Purpose
loft
Loft 2D geometry sections to 3D geometry.
Syntax
Description
g3 = loft(gl,...)
g3 = loft(gl,...) lofts the 2D geometry sections in gl to a 3D geometry object
g3.
gl is a cell array of size 1-by-ng of 2D geometry objects that belongs to one of the
subclasses solid2 or curve2. That is, gl{i} contains the geometry object of
section number i.
The function loft accepts the following property/value pairs:
TABLE 1-71: VALID PROPERTY/VALUE PAIRS
PROPERTY VALUE DESCRIPTION
LoftEdge
LoftSgnEdge
LoftVtxPair
1-by-ng cell array of
integer vectors
1-by-ng cell array of
integer vectors
1-by-ng cell array of
integer matrices with two
rows
Permutation vectors for edges
Signed permutation vector for
edges
Permutation vector for vertex
pairs
LoftSecPos 1-by-3 cell array Positioning for 2D geometry
sections
Wrkpln
1-by-ng cell array of 3-by-3
matrices
Work planes for 2D geometry
sections
LoftWeights Matrix of size 2-by-(ng-1) Cubic lofting weights
LoftMethod linear | cubic Lofting method
The properties LoftEdge, LoftSgnEdge or LoftVtxPair are needed to make the
connection between edges and vertices in different sections unique.
The property LoftEdge with the value {e1,e2,...} means that the edge with
number e1(1) in gl{1} should be lofted to match the edge with number e2(1) in
gl{2} and so on for all elements in e1 and e2.
Likewise, the property LoftSgnEdge with the value {e1,e2,...} means the same
thing, except that edges with different directions is indicated by using negative
signs. This is often more reliable than LoftEdge above.
The property LoftVtxPair is used in the same way, but uses pairs of vertices
instead. Thus, LoftVtxPair with the value {v1,v2,...} means that the vertex
with number v1(1,1) in gl{1} is to be matched with vertex number v2(1,1) in
244 | CHAPTER 1: COMMAND REFERENCE