The Constraint... command creates dimensional constraints (driving dimensions) or relations between the elements of the document.

Creation Stages / Use:

Click the icon or select the 3D sketch > Constraint... command from the drop-down menu.

This command does not have a dialog panel, TopSolid will propose different types of possible dimensioning (linear, angular, radial or diametral) depending on the element(s) selected.

Modifications / Additional information:

The value of a dimension is modified by double-clicking on the text of the dimension when no command has been launched (neutral mode) or when the command Constraint is launched.

The type of extremity of a dimension depends on the selected element: the selection of an extremity of an element creates a dimension with a point type extremity and the selecting of an element creates a dimension with an arrow type extremity.

As the dimensions and constraints are created, TopSolid changes the color of the sketch elements in order to indicate whether they are fully constrained. An under constrained element is displayed in magenta, a completely constrained element is displayed in blue.

The same is true for the dimensions. When an over-constrained dimension is detected, TopSolid automatically disables the dimension being created and displays it in gray. The commands Enable and Disable in the popup menu of a dimension allow the types of dimensions to be modified. In case of over-constraint, the dimensions or relations in question are displayed in red.

Ask dimension value mode allows you to modify the dimension value just after having created it.