More about Creating Conic Curves

The Sketch tools toolbar displays options for defining the conic. If you want to trim the conic you can isolate it from the rest of the feature.

The following topics are discussed:

Related Topics
Creating Conic Curves

Conic Options

The Sketch tools toolbar displays options for defining the conic.



Creation Type Options

Conic creation type options are:

Icon Tooltip Description
Two Points Type allows you to create a conic from two points (the start and end points), two tangencies at these points and either a parameter or a passing point. This type is activated by default. See the Use Two Points and Start and End Tangent section and Using Two Points and Tangent Intersection Point in Creating Conic Curves.
Four Points Type allows you to create a conic from four points (the start and end points, and two intermediate passing points) and one tangency at one of these points. Intermediates passing points have to be selected in logical order.

See the Use Four Points with a Tangency at Passing Point section in Creating Conic Curves.
Five Points Type allows you to create a conic from five passing points (the start and end points, and three intermediate passing points). You cannot define a tangency at any of these point. Intermediates passing points have to be selected in logical order.

See the Use Five Points section in Creating Conic Curves.

Creation Mode Option

Conic creation mode options are:

Icon Tooltip Description
Nearest End Point allows you to create a conic based on existing curved. If the selected points belong to a curve the tangent direction is directly read on the curve. This mode is activated by default. See the Use Two Points with the Nearest End Point section in Creating Conic Curves.
Start and End Tangent allows you to define:


  • The tangencies at start and end points for Two Points type. For Two Points type, this mode is activated by default, see the Use Two Points and Start and End Tangent section in Creating Conic Curves

  • The tangency at one point only for Four Points type, if you deactivate this mode for the three first created points, a tangency must be automatically defined for the last point.

    Each time you redefine a tangency at one point, the previous defined tangency is removed, see the Use Four Points with a Tangency at Passing Point section in Creating Conic Curves.

    For Four Points type, this mode is activated by default.

This mode is available with Two Points and Four Points types only, and for these types activated by default.

Tangent Intersection Point available with Two Points type only, allows you to define the intersection point of the start and end tangents.

The start and end tangents are defined from this point and the start and end points respectively. This mode deactivates the Start and End Tangent mode.

See the Use Two Points and Tangent Intersection Point section in Creating Conic Curves.

More about the Conic Command

The conic is variational and associative with the geometrical inputs. You cannot trim nor break conic curves.

Keep in mind the following when using Conic :


  • The conic is variational and associative with the geometrical inputs, which means that it will be updated after every modification of a geometry input.
  • You cannot trim nor break conic curves. To work around this restriction, you can project the conic curve of interest onto another sketch, then trim the projected elements.

The Isolate Option

If you want to trim the conic you can isolate it from the rest of the feature.

If you want to isolate the conic from the rest of the feature to trim it, you can right-click on the connecting curve then go to xxx.object and then isolate.