WebGL that
hands the context back

Rays that arrive where a sampled sheet folds end-on, so no line of code decides where a ray belongs.

Line width divided by the height gradient per pixel, so the lines crowd on steep ground without ever changing thickness.

Slabs composited back to front, each dimming what is behind it, so the bank has an inside rather than a surface.

Edges recomputed from distance every frame with nothing created or destroyed, so the mesh thickens where nodes gather.

A four-number room sampled through a bent view direction, so every highlight is a reflection rather than a painted one.

A Fibonacci lattice for the placement and a screen-space axis for the drag, so there is no ring to close and no orientation the gesture behaves differently in.

Three fields multiplied rather than added, so light appears only where all three agree and most of the frame stays dark.

Brightness taken from thread direction rather than position, so the highlight moves because the cloth turned.

Size, brightness and colour all read off one depth, so the field reads as distance rather than as assorted dots.

Points moved in circles rather than up and down, so crests peak and troughs flatten without either being shaped.

Colour computed from film thickness at three wavelengths, so the sequence is interference and not a hue ramp.

The deflection is a tent rather than a bell, because a string under constant tension has nowhere to put the load and meets itself in a corner.