Compute isosurface.

• Push the ``Compute IsoSurface'' button , a window appears (see figure 1.48). Each components of this window are described below.

  Figure 1.48: Fenêtre de saisie de l'isovaleur.

  

• Choose a variable (figure 1.48) by clicking on the toggle button (example: Energie) then move the cursor scale to choose a value. Press ``ok'', then the isosurface is being computed.
  The ``cancel'' button stops the choice and return to the previous menu.
• When the ``Compute Isosurface'' widget disappears, the isosurface has been computed, so you can visualize it by setting on the toggles ``Isowire'' or ``IsoSolid'' toggle buttons.
• The ``IsoWire'' representation visualizes all the facets composing the isosurfaces.
  The ``IsoSolid'' represents the facets composing the 3D isosurface with the technique of masking faces.
• The label (above the button ``Compute Isosurface'' in the working window) gives information about the variable and the value of the isosurface.
  You can choose another isosurface by pushing again on the ``Compute Isosurface'' button.

Note: With the isosurface representation, you can make 3D interaction as described in the section 1.4.4.