Last update:00-04-30
Examples
The model is a window with a simple overhang positioned 1.52 meters above it, with a length of 1.89 meters (as the program calculates for the above input values). Here is an isometric view of the window and overhang:
(You're looking down at the window from above it and to the right.)
In the winter time,
For the critical day in winter when the sun is highest in the sky, which is December 21, five times of day from 10:00am through 2:00pm was modelled. The model rendering is looking straight at the window, with the overhang jutting out from the building above
the window. You can't see much of the overhang since it isn't very thick, but it casts a pretty substantial shadow.
The movement of the overhang shadings-
From 10:00am , 11:00am , 12:00pm (noon), 1:00pm , 2:00pm
As you can see, the overhang admits sun all day on that date, with the shadow reaching its lowest height at noon, just at the top of the window.
In the summer time,
For summer shading, the critical date is June 21, the date when the sun is lowest in the sky. Here are renderings of the model at the same times of day:
The movement of the overhang shadings-
From 10:00am , 11:00am , 12:00pm (noon), 1:00pm , 2:00pm
As you can see, the overhang shades the window from the sun all day on that date, with the bottom of the shadow reaching its highest height at noon, just at the bottom of the window.
