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Ellipse and circle
An ellipse, or a circle when width equals height: balls, wheels, pulleys, discs.
How to add
Use the Ellipse tool (key O) and drag on the canvas. Hold Shift for a circle.
Properties
- Size and position
- Equal width and height make a circle.
- Fill and stroke
- Same as for a rectangle: colour, gradient, image, outline width.
- Physics
- A round body rolls, which suits balls and wheels. Mass, friction and bounce live on the Physics tab.
- Trajectory trail
- The "Draw trajectory trail" checkbox leaves the path of the body during simulation.
Tips
- For a wheel, place a joint at the centre and enable its motor: the disc will spin.
- A plain colour hides rotation, so the editor adds spoke and stripe markers to spinning discs automatically.