Sketch options

 

 

Links / Videos:

 

This command allows to modify the sketch behavior by sewing or not profiles together, by verifying or cleaning automatically the sketch, by managing the splines extension of the editing sketch.

 

Creation stages / Use:

 

Select the 2D sketch > Options... command from the drop-down menu.

 

  • The Large radius value is a step at which a circle will be deformed differently during its resolution by the solver.

Below this threshold, for a rather short radius, it will not be able to change the sign of curvature and will always remain on the same side of the chord. This curvature sign change can be seen using the deformation command.

Otherwise, if the radius becomes to large, it could cross its chord and reverse its curvature.

  • Solving with profiles: this option allows to make a parallel of an ellipse, an ellipse arc, or a spline in a sketch thanks to the 2D Sketch > Other modifications > Offset command. Without this option, these offsets must be done from a sketch operation.

  • Riemannian solving: this option allows to activate the Riemannian solving mode. Riemannian geometry allows the study of geometric and curvature varieties. These are surfaces or objects of higher dimension on which exist of angle and length, generalizing the traditional geometry which was limited to the Euclidean space. The main goal of Riemannian geometry is the study of curvatures of space and the geodesics allowing to solve the problems of shortest path. It allows, among other things, the inversion of curvature.

This command is only interresting for a few users, it is only available with TopSolid started as advanced mode.

To activate this advanced mode, add the argument -a in the TopSolid shortcut properties.

 

 

 

  • The large radius option has only to be use for uncommon cases like a radius of several kilometers for railway rails.

  • The default threshold is set to R = 1m which correspond to a diameter of 2m. We highly recommend that you do not change this numerical threshold.