Solar Rooms
Zhuhai · UTC+8 · continuous solar geometry

Four windows,one year of sunlight

Four independent single-window rooms correspond to the top, right, bottom and left sides of the floor plan. Date and time are continuous sliders; sunlight is judged by the 3D solar vector and each window’s outward normal, not by eyeballing azimuth jumps.

22.3588°NGoogle/WGS84 latitude
113.5359°EGoogle/WGS84 longitude
330°true direction of plan top
1 mincontinuous controls; heatmap 10 min

Continuous date and time axes

Drag date and time; all room data recalculates by minute. The annual heatmap samples every 10 minutes for performance.

1/1SpringSummerAutumn12/31
00:0006:0012:0018:0024:00

Annual direct-sun heatmap

Each column is a day of 2026, each row is a 10-minute sample. Brighter cells mean the selected window receives direct sun.

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Coordinate assumptions

The model uses local solar time correction, equation of time and a 3D sun vector. Room windows use outward horizontal normals.

Plan top330° true azimuth
Right side60° true azimuth
Bottom side150° true azimuth
Left side240° true azimuth

Direct-sun rule

Sun above horizonSolar altitude must be greater than 0°.
Window faces sunDot product between sun horizontal vector and window normal must be positive.
3D continuityIncidence is computed continuously, so noon/zenith edge cases do not flip manually.
SamplingInteractive controls use one minute; annual map uses ten-minute samples.
Build by Muse AI