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This notification window says we named the
file “POV_Tutorial,” and
it was already open in POV, in which case
we would select “Yes”
to have the new version of the file loaded.
If the file was not already loaded in POV, you won't see that
notification window.
Before rendering, tell POV what size
the rendering bitmap should be.
For this example,
we'll select 640 x 480 with anti-aliasing:
After selecting the bitmap size,
we're ready to render the scene.
Click on the Run button
to begin rendering:
Allow rendering to take a few seconds, if necessary.
After rendering is completed, the rendering will look like this:
This rendering is for March/Sept. 21, 1:00 pm.
It shows the shadow of the tree striking
a corner of the eave fascia,
and the wall where a window would be.
Shade is not striking the roof top.
Now we'll look at shading for a different day and time.
You change the position of the Sun by changing the light_source vector.
You can select a vector for any hour of the 21st day of any month. The default,
shown in the example rendering above is March/Sept. 21, 1:00 pm.
That line is uncommented in the light_source command:
To see shading for a different time and/or day,
comment out that vector (by putting two slashes at the beginning
of the line), and uncomment the vector for the desired time and day.
Let's try viewing the scene for December 21 at 3:00 pm.
First comment out the March line.
Then uncomment the Dec. 21, 3:00 pm line:
Rendering the scene again shows shading for December 21, 3:00 pm:
Shade is striking the roof top in this rendering.
You may try other days and times.
Remember to leave only one date/time uncommented.
This concludes the POV Ray tutorial. Happy ray tracing!
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