INT_RULE.m

%--------------------------------------------------------------------------
% INT_RULE
%--------------------------------------------------------------------------
% Creation of a INT_RULE object.

%--------------------------------------------------------------------------
% Syntax
%--------------------------------------------------------------------------
IR = INT_RULE(idx)

%--------------------------------------------------------------------------
% Description
%--------------------------------------------------------------------------
% INT_RULE creates a INT_RULE object. This type of object can be used to
% describe an integration rule. It has the following properties: 
%    - weight    : sacalar, vector : weights associated with the integration
%                  points - n x 1 vector in case of n integration points
%    - int_point : n x m vector - in case of n integration points with m
%                  coordinates
%    - nb_point  : number of integration points

%--------------------------------------------------------------------------
% Input arguments
%--------------------------------------------------------------------------
% idx    : scalar - index to select the appropriate integration rule
     
%--------------------------------------------------------------------------
% Output arguments
%--------------------------------------------------------------------------
% IR     : INT_RULE object

%--------------------------------------------------------------------------
% Example
%--------------------------------------------------------------------------
IR = INT_RULE(5)

IR = 

  INT_RULE with properties:

       weight: [0.0417 0.0417 0.0417 0.0417]
    int_point: [4x3 double]
     nb_point: 4

IR = INT_RULE(15)

IR = 

  INT_RULE with properties:

       weight: [8x1 double]
    int_point: [8x3 double]
     nb_point: 8