Add one 80 m block on Robinson Road in Mid-Levels

This is a small tool I built with an AI agent, HK Wind Sketch (香港風環境草圖). Today I took it out for a wind test:

・Type "Robinson Road" and the page pulls the Lands Department's 5 m terrain and the real height of every building, then builds a 600 m square site.
・Wind directions come from the Planning Department's site wind data, and you choose which one to try.
・Draw a block in plan, corner by corner, switch to 3D, and the wind is computed live on your own graphics card, about 1.1 million cells.
・Streamlines climb the slope and bend around the towers. Same camera, east wind to south wind, and the whole field changes.

For me the useful part is not a pretty picture. It is asking the right questions early: where does the tower sit on the podium, which way does it face, should a gap stay open to the prevailing wind? The formal study usually comes once there is a scheme, but those choices are made long before.