- click a particle to select it
- drag an object to change its position
- shift-drag an object to change its initial velocity
- click the canvas to remove the current particle selection
- press the gear icon with a particle (the canvas) selected to edit the particle properties (background fields)
- the background field editor can use three parameters:
$x$ ,$y$ ,$v_x$ * (v_x),$v_y$ * (v_y), and$t$ in the field calculation -
$x$ and$y$ are the positions of the particle -
$v_x$ and$v_y$ are the velocities of the particle -
$t$ is the time since simulation has begun
- the background field editor can use three parameters:
- press the play/stop button to play/stop the simulation
- levels can be loaded and saved after being created using the buttons in the header of the simulator
(*it is technically unphysical for a gravitational or electric field to be velocity-dependent, but it is a neat feature)
a critically dampened harmonic oscillator (top) and a non-isotropic harmonic oscillator in two dimensions (bottom)
many small-mass bodies (e.g., planets) orbiting a central highly massive body (e.g., the sun)
