Reusable entities / primitives.
<a-grid/>: Flat grid, with subdivisions at regular intervals.<a-ocean/>: Ocean with animated waves.<a-tube/>: Tube following a custom path.
Basic:
<a-grid></a-grid>
<a-ocean></a-ocean>
<a-tube path="5 0 5, 5 0 -5, -5 0 -5" radius="0.5" material="color: red"></a-tube>Custom:
<a-grid src="custom-image.png"></a-grid><a-ocean color="#92E2E2" width="25" depth="25" density="15" speed="2"></a-ocean>