Import Debian changes 3a1-4.2debian/3a1-4.2

slib (3a1-4.2) unstable; urgency=low

  * Non-maintainer upload.
  * Add guile.init.local for use within the build dir, since otherwise we
    have an (earlier unnoticed) circular build-dep due to a difference
    between scm and guile.

slib (3a1-4.1) unstable; urgency=low

  * Non-maintainer upload.
  * Build-depend on guile-1.6 instead of scm, since the new version of
    scm is wedged in unstable (closes: #281809).

slib (3a1-4) unstable; urgency=low

  * Also check for expected creation on slibcat. (Closes: #240096)

slib (3a1-3) unstable; urgency=low

  * Also check for /usr/share/guile/1.6/slib before installing for guile
    1.6. (Closes: #239267)

slib (3a1-2) unstable; urgency=low

  * Add format.scm back into slib until gnucash stops using it.
  * Call guile-1.6 new-catalog (Closes: #238231)

slib (3a1-1) unstable; urgency=low

  * New upstream release
  * Remove Info section from doc-base file (Closes: #186950)
  * Remove period from end of description (linda, lintian)
  * html gen fixed upstream (Closes: #111778)

slib (2d4-2) unstable; urgency=low

  * Fix url for upstream source (Closes: #144981)
  * Fix typo in slib.texi (enquque->enqueue) (Closes: #147475)
  * Add build depends.

slib (2d4-1) unstable; urgency=low

  * New upstream.

slib (2d3-1) unstable; urgency=low

  * New upstream.
  * Remove texi2html call in debian/rules.  Now done upstream.  Add make
    html instead.
  * Changes to rules and doc-base to conform to upstream html gen
  * Clean up upstream makefile to make sure it cleans up after itself.

1 files changed, 117 insertions, 0 deletions

diff --git a/daylight.txi b/daylight.txi
new file mode 100644
index 0000000..fa24afc
--- /dev/null
+++ b/daylight.txi
@@ -0,0 +1,117 @@
+@code{(require 'daylight)}
+@ftindex daylight
+@ftindex sunlight
+@ftindex sun
+@ftindex sky
+
+@noindent
+This package calculates the colors of sky as detailed in:@*
+@uref{http://www.cs.utah.edu/vissim/papers/sunsky/sunsky.pdf}@*
+@cite{A Practical Analytic Model for Daylight}@*
+A. J. Preetham, Peter Shirley, Brian Smits
+
+
+@defun solar-hour julian-day hour
+
+
+Returns the solar-time in hours given the integer @var{julian-day} in the range 1 to
+366, and the local time in hours.
+
+To be meticulous, subtract 4 minutes for each degree of longitude west
+of the standard meridian of your time zone.
+@end defun
+
+@defun solar-declination julian-day
+
+@end defun
+
+@defun solar-polar declination latitude solar-hour
+Returns a list of @var{theta_s}, the solar angle from the
+zenith, and @var{phi_s}, the solar azimuth.  0 <= @var{theta_s}
+measured in degrees.  @var{phi_s} is measured in degrees from due
+south; west of south being positive.
+@end defun
+@noindent
+In the following procedures, the number 0 <= @var{theta_s} <= 90 is
+the solar angle from the zenith in degrees.
+
+@cindex turbidity
+@noindent
+Turbidity is a measure of the fraction of scattering due to haze as
+opposed to molecules.  This is a convenient quantity because it can be
+estimated based on visibility of distant objects.  This model fails
+for turbidity values less than 1.3.
+
+@example
+@group
+    _______________________________________________________________
+512|-:                                                             |
+   | * pure-air                                                    |
+256|-:**                                                           |
+   | : ** exceptionally-clear                                      |
+128|-:   *                                                         |
+   | :    **                                                       |
+ 64|-:      *                                                      |
+   | :       ** very-clear                                         |
+ 32|-:         **                                                  |
+   | :           **                                                |
+ 16|-:             *** clear                                       |
+   | :               ****                                          |
+  8|-:                  ****                                       |
+   | :                     **** light-haze                         |
+  4|-:                         ****                                |
+   | :                             ******                          |
+  2|-:                                  ******** haze         thin-|
+   | :                                          ***********    fog |
+  1|-:----------------------------------------------------*******--|
+   |_:____.____:____.____:____.____:____.____:____.____:____.____:_|
+     1         2         4         8        16        32        64
+              Meterorological range (km) versus Turbidity
+@end group
+@end example
+
+
+@defun sunlight-spectrum turbidity theta_s
+Returns a vector of 41 values, the spectrum of sunlight from
+380.nm to 790.nm for a given @var{turbidity} and @var{theta_s}.
+@end defun
+
+@defun sunlight-xyz turbidity theta_s
+Returns (unnormalized) XYZ values for color of sunlight for a
+given @var{turbidity} and @var{theta_s}.
+@end defun
+
+@defun sunlight-ciexyz turbidity theta_s
+Given @var{turbidity} and @var{theta_s}, @code{sunlight-ciexyz} returns the CIEXYZ triple for color of
+sunlight scaled to be just inside the RGB709 gamut.
+@end defun
+
+@defun zenith-xyy turbidity theta_s
+Returns the xyY (chromaticity and luminance) at the zenith.  The
+Luminance has units kcd/m^2.
+@end defun
+
+@defun overcast-sky-color-xyy turbidity theta_s
+@var{turbidity} is a positive real number expressing the amount of light
+scattering.  The real number @var{theta_s} is the solar angle from the zenith in
+degrees.
+
+@code{overcast-sky-color-xyy} returns a function of one angle @var{theta}, the angle from the
+zenith of the viewing direction (in degrees); and returning the xyY
+value for light coming from that elevation of the sky.
+@end defun
+
+@defun clear-sky-color-xyy turbidity theta_s phi_s
+@defunx sky-color-xyy turbidity theta_s phi_s
+@var{turbidity} is a positive real number expressing the amount of light
+scattering.  The real number @var{theta_s} is the solar angle from the zenith in
+degrees.  The real number @var{phi_s} is the solar angle from south.
+
+@code{clear-sky-color-xyy} returns a function of two angles, @var{theta} and @var{phi} which
+specify the angles from the zenith and south meridian of the viewing
+direction (in degrees); returning the xyY value for light coming from
+that direction of the sky.
+
+@code{sky-color-xyY} calls @code{overcast-sky-color-xyY} for
+@var{turbidity} <= 20; otherwise the @code{clear-sky-color-xyy} function.
+@end defun