L-Bricks by Steven Reid goldfinger69@geocities.com
@(#)pov-ray l_bricks.zip v1.1 07/02/98
---------------------------------------

Sorry, I don't have much for documentation yet, just this quick
readme file.  If you received this from a source other than my
website, here is the url which (hopefully) I will have my
tutorial up soon.  At least a few blurbs about this library can
be found there:
	http://www.geocities.com/CapeCanaveral/Hangar/1969

Installation:
-------------

Unzip this file into your POV-Ray (version 3 or higher) include
directory.  I've created a seperate directory and added it to the
library include path.  You can do the same if you wish.  The files
must be able to find each other, so it is best to keep them
together (including the pictures).

Usage:
------

If you don't have it, download the 602 Fire Chief sample POV-Ray
scene from my web site.  It is a good starting place!  Since I
started ray tracing using Stefan Maes' LEGO library (which in turn
was based on Paul Gyugyi's original LEGO library for Rayshade (now
known as L3G0), my library shares the unusual (for POV-Ray anyway)
axis definition of  as your look down the Y axis:


		^ +Z
		|  /^ +Y
		| /
		|/
	+X <----+-----> -X

To make adding the bricks to more traditional POV-Ray scenes (and
to be able to use the sky spheres and grounds more easily), I
create a union of all the bricks and do a rotate -90*x.  Note that
you will have to position the camera on the opposite site of the
Z axis (pointing towards -Z instead of towards Z) to see the
front of your scene.  Or, you could just rotate the whole thing
again 180*y.  My scene does the first to make things easier.

The bricks are simple object defines, so the easiest way to
use them is as follows:

union { // a scene
  object {l_br4x2 texture{l_red}}
  object {l_rd1   translate  texture{l_blue}}

  rotate -90*x
}

Of course, it is easier to build up parts and then piece them all
together!

Note the use of W and H.  To simplify positioning, I've declared
size constants.  W is the width of a standard brick.  H is the
standard height.  Other definitions can be found in L_Standard.inc
which is used by all the library files.

As I find time, I'll create a catalog of all the different bricks
currently defined.  For now, browse the files and see what's there.
The S_Minifig.inc is probably the hardest.  Take a look at the
602 Fire Chief for a quick look at how the good old fire chief is
positioned and put together!

If you find any bugs or issues, please drop me a line at:
	goldfinger69@geocities.com or slreid@micron.net

Enjoy!
	Steven Reid

    Source: geocities.com/slreid69/lego

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