Development：Kato Atelier LLC
Description:
The "Solar Shadow Calculator" is a gadget for providing several kinds of solar data required in architectural design, including the solar shadow direction, and solar altitude, among others.
The "Solar Shadow Calculator" is a product inspired by architect's desires for getting required data anytime anywhere.
By turning on/off its compass feature, you can choose the best operation according to your circumstances, whether on-site or off-site.
Functions:
- The direction of the sun is represented by a shadow of a tree.
- You can get:
- the azimuth and altitude of the sun at a current position and time;
- the times of sunrise, sunset, and culmination; and
- the azimuth and altitude of the sun at an arbitrary date and time.
- You can specify:
- an arbitrary location using a map;
- a location using the latitude/longitude; and
- a precision in time calculating ranging from one to fifteen minutes. A reduced precision will result in a shorter calculation time.
On Site: With the compass feature ON
It can also tell you the direction of the winter morning sun in the summer or of the summer evening sun in the winter.
Input a date and time in the "Preferences" page, and the main page will graphically show the direction of a shadow cast by the sun, as well as numerically show data such as the azimuth, altitude, etc.
On Your Sketchbook: With the compass feature OFF
For this purpose, we implement a function of turning off the compass feature.
By aligning the north in your design on a sketch with the north in the "Solar Shadow Calculator," you can instantaneously make a check when and in what direction the sunlight penetrates through a window in a house under design throughout a year, from sunrise to sunset, and at a desired date and time.
Attention＊The accuracy of compass headings can be affected by environmental interference.
http://support.apple.com/kb/TS2767?viewlocale=en_US
Bibliography : 「日の出・日の入りの計算」 著:長沢工/地人書館