These are custom signs created for this map. All materials in the HMW_signs
directory are custom made, the ones in "HMW_signage" are materials that re-use
the textures supplied with Portal with different parameters.

The svg files are created with the free Inkscape drawing application
(www.inkscape.org)

The TGA files area created by overlaying the drawings on a copy of one of
Valve's signage textures. The easiest way to get an empty sign frame is to
extract the texture materials/signage/signage_overlay_dots1 and replace the
quadrant containing the dot with one of the empty quadrants.

As most of these textures are of size 256 * 256, the empty frame needs to be
scaled up by a factor of 2.


The images "hint_final_step5.png" and "hint_final_step6.png" are rendered with
Blender (www.blender.org) and included into hint_final.svg by reference. The
source file is hint_final.blend, which contains an animation with two frames,
one with the tiles in their initial position and another with the tiles lowered
to create a contiguous, portal-enabled surface.

The images are output at a resulution of 512 * 512 pixels, to get the correct
wire frame line thickness. They are then scaled up to 1024 * 1024 and have a
posterise effect applied, which reduces the image to black and white only. (This
is necessary for the distance-alpha effect to work properly. See valve's
documentation on this feature for details.)

