Symmetrical objects

ppModeler allows creating symmetrical objects. The user works on one half of the object, the other part is automatically updated. The picture on the left shows a symmetrical object. The user can work on the vertices, edges or faces of the white part. The blue part is uneditable but follows the changes made to the white part.
To create a symmetrical object, select an object and open the mirror tool(), in the object modifier () toolbox.
To define the mirror plane, the user must select three points (in green). Each time the user click on a point, the oldest selected point is deselected, and the clicked one is selected. The other points that are close to the plane defined by these three points (the distance can be change) are drawn in red. The mirror thickness can be change in the parameter panel.
When the user click on the 'Ok' button, ppModeler asks if the user wants to mirror the object or wants to create a symmetrical object. The mirror tool just produces a normal mesh, where the user can work on the two parts independently. On a symmetrical object, the user can only work on one half, the other part will follow the changes.
If a symmetrical object need to be converted to a mesh (standard object), then select it and use the 'No more symmetrical' item of the 'effects' menu.