On the Reference Geometry toolbar, click Point, or go to Insert > Reference Geometry > Point.
Select the type of reference point to create in the PropertyManager.
Select the entities to utilise to establish the reference point in the graphics area. Make a click.
Splines join curves together to create smooth, uneven curves. Each click with this tool added a new area to the line, or a line segment. Each click also creates a control point, or a set of points that govern the curve's shape. That is the essence of a spline.
Spline modelling is typically used to create hard objects such as automobiles, buildings, and furniture. When building these things, which can be a mix of angular and curved shapes, splines come in handy. Spline modelling should be your first choice when building a 3D scene that involves curved shapes.
The shape or form of a surface or solid is defined by reference geometry. Planes, axes, coordinate systems, and points are all examples of reference geometry. You can use reference geometry to make a variety of different features. Consider the following scenario: In lofts and sweeps, planes are employed.
There was such a thing as a Construction Line in AutoCAD. A sketch object (the most popular ones are lines and circles) with a centerline linetype is always considered construction geometry in a SolidWorks part file.