Const
Placeholder point: {x: NaN, y:NaN, z:NaN } Use isPlaceholder to check if a point is a placeholder. Use Placeholder to get a point without z property.
{x: NaN, y:NaN, z:NaN }
isPlaceholder
Placeholder
z
Placeholder point:
{x: NaN, y:NaN, z:NaN }UseisPlaceholderto check if a point is a placeholder. UsePlaceholderto get a point withoutzproperty.