Some objects ( Profiles, Revolutons, Tubes, Arrays ) can be drawn with the Axis or Section in Free mode.
Drawing curves combines freehand and control points.
- Freehand is the default drawing mode - press and move the pen to draw a freehand curve. You can lift the pen and continue drawing somewhere else.
- Arc - hold Alt, press and move the pen to position an arc control point.
- Sharp - hold Shift, press and move the pen to position a sharp point.
- Bézier - hold Ctrl, press and move the pen to position a Bézier control point.
- Backspace - removes the previous point.
- End - closes or opens the current curve.
- Enter - finishes the current shape.
- Esc - cancels the current shape.
If you want to draw complex 3D curves or simply get a different view on the current shape, you can change the view while drawing by holding the right mouse button and continue the shape afterwards.