Epitrochoid to Epicycloid is similar to Hypotrochoid to Hypocycloid. Epitrochoid is a generalization of Epicycloid where the tracking point can lie inside or outside the rolling circle. Animate the drawing
Continuing from previous Accelerating and Rotating Spaceship project, make the spaceship fire the bullets. Each bullet have limited range and there should be some time gap between the firings so
AnĀ ellipse is a curve surrounding two focal points such that the sum of the distances to the two focal points is constant for every point on the curve. You drew