Dimensions are created automatically when you enter values in the input boxes as you create geometry or manually using the General Dimension command. Parametric dimensions, a type of sketch constraint, control the size and position of geometry. Varying inference and persistence settings can affect the results of sketch operations. If constraint persistence is turned off, constraints are not created automatically. As a constraint is inferred, the constraint symbol is shown, as well as dotted alignment lines, if applicable.Ĭonstraint persistence determines if inferred constraints are maintained after the geometry is created. This process of inference decides which constraints are available to the geometry as the shape and orientation are varied. For example, dragging the endpoint of a line that’s constrained to be perpendicular to another line does not change the perpendicularity.Ĭonstraints are inferred when sketching new or modifying existing geometry. These geometric constraints allow the sketch to be edited with predictable results. Constraints can also be manually applied after the sketch geometry exists to stabilize sketch shape or position. Geometric constraints are created automatically between lines, arcs, and other geometry as you sketch.
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