# Drawing Objects

Drawing commands are found in the Drawing Toolbar.

The geometry produced by these commands can include points, lines, or curves.

## Points

Point objects are the simplest entities, marking a single point in 3D space. They can be positioned anywhere in space and are most often used as as placeholders.

**Point:**Draw a single point object at a specified location.**Points:**Draw multiple point objects.**Point Cloud:**Create a set of vertices from point objects.

## Lines and polylines

A **line** is formed by a succession of points that create a continuous stroke. Line objects are degree 1 curves with no bends.

A **polyline** is a series of line or arc segments joined together; it can be open or closed.

**Polyline:**Draw a series of joined line segments.**Rectangle:**Draw a rectangular closed polyline with options for starting.**Polygon:**Draw a closed polyline with a specified number of sides.

## Curves

#### Free-form curves

**Free-form curves** in RhinoLands are NURBS curves. A NURBS curve is defined by its order, a set of weighted control points, and a knot vector.

RhinoLands offers a variety of methods for creating free-form curves.

**Curve:**Draw a curve from control point locations.**InterpCrv :**Fit a curve through picked locations.**Sketch :**Drag the mouse to draw a curve.

See: Wikipedia: Non-uniform rational B-spline (NURBS).

#### Conic-section curves

**Conic section curves** are formed by the different intersections between a cone and a plane, as long as the plane does not pass through the vertex.

RhinoLands commands allow drawing specific conics, which are degree 2 curves. An arc is a segment of a circle.

Conic-section curve examples (left) Circle, (right) Ellipse.