Start new demo to explore the effect of phase differences
between point light sources.
Add an arrow showing the propagation direction.
The code to draw the plane wave's wavefronts was changed
to make sure one of the wavefronts crosses 0,0
which is wherte the arrow starts.
Make the y axis grow upwards
allow object waves to cover the whole canvas
code cleanup/organization
make the phase of object waves depend on the reference wave
code cleanup / beautifying
draw the actual (one-dimensional) hologram
first prototype for a better way to display the planar wave direction arrow
improved arrow box
code cleanup
use strict js
move javascript to a separate file