The churning foam pool at the foot of a waterfall — drawn over the receiving
channel by buildWaterfallFoamGeometry's elliptical fan, fading to
nothing at the rim so it blends into the river rather than stamping a disc
on it. Honours the same descriptor appearance fields as the other liquid
layers, so foamIntensity: 0 turns it off and lava's slow flowSpeed
makes its pool churn as sluggishly as its surface.
The churning foam pool at the foot of a waterfall — drawn over the receiving channel by buildWaterfallFoamGeometry's elliptical fan, fading to nothing at the rim so it blends into the river rather than stamping a disc on it. Honours the same descriptor appearance fields as the other liquid layers, so
foamIntensity: 0turns it off and lava's slowflowSpeedmakes its pool churn as sluggishly as its surface.