rescribe a displacement Dirichlet boundary condition at a point</span>
        <span class="keyword">function</span> setDisplacementDirichletBCAtPoint(this, X, value)
            this.setDirichletBCAtPoint(X, [1,2], value);
        <span class="keyword">end</span>

        <span class="comment">% -----------------------------------------------------------------</span>
        <span class="comment">% Prescribe a displacement Dirichlet boundary condition at a border</span>
        <span class="keyword">functi