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COMSOL Multiphysics™

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BezierMfd<br />

BezierMfd<br />

Supported Versions 0<br />

Subtype of<br />

Fields<br />

Manifold<br />

The class is defined by the following fields<br />

ENTITY/OBJECT VARIABLE DESCRIPTION<br />

integer<br />

Version<br />

integer d Space dimension<br />

Transform<br />

Transformation class<br />

integer m Degree in first parameter<br />

integer n Degree in second parameter<br />

integer k Number of control points<br />

double[k][d+1] P Matrix of control points with the weights in the last<br />

column<br />

Description<br />

The BezierMfd type is the abstract base class for the different type of Bézier surfaces<br />

and curves that are supported. These can all be represented in using the generalized<br />

equation<br />

S( st , )<br />

=<br />

m<br />

∑<br />

n<br />

∑<br />

b i, j<br />

w i, j<br />

Bst ( , )<br />

i = 0 j = 0<br />

---------------------------------------------------------<br />

m n<br />

∑ ∑<br />

w i j<br />

i = 0 j = 0<br />

,<br />

Bst ( , )<br />

where B are functions as described in the respective entry, and b are the control<br />

point coordinates in P and w are the weights stored in the last column of P.<br />

See also<br />

BSplineMfd<br />

433

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